1.components of the belt bucket elevator department:belt bucket elevator department by the driving device (motor, reducer and base), coupling, on the belt wheel and bracket composition.
2.The belt bucket elevator part of the installation process
A) After the equipment is opened and accepted, the equipment shall be transported from the equipment storage yard to the ground near the building where the equipment is located by a forklift or car. If the location of the equipment is on the first floor, the equipment shall be transported directly to the base of the equipment by a forklift or car.If the base position of the equipment is high, the crane shall be used for hoisting. The crane model selection shall refer to the height of the equipment, the rotary radius of the hoisting position and the weight of the equipment.If the equipment is overweight and the position is too high, the hoisting scheme will be made separately.
B) After the equipment basic review is qualified, the driving device (motor, reducer and base), coupling, upper belt pulley and bracket of the belt bucket elevator shall be translated to the side of the equipment foundation, and then hoisted into place.
C) on the drive and belt wheel bracket in place is: find respectively according to cross the center line on the basis of the driving gear and the upper belt wheel bracket alignment, drive to find the punctual for: drive the base surface, coupling between motor and speed reducer (or the output shaft of the motor head) and reducer output shaft head; The aligning point of the upper belt pulley bracket is: the upper surface of the base of the upper belt pulley bracket and the end face of the bearing pedestal of the two belt pulley bracket. The alignment method is measured by the frame level and adjusted by the inclined cushion. The placement of the cushion conforms to the requirements as shown in Figure 1-1. The spacing L between the two groups of cushions shall be less than 500mm, and the placement of the cushion shall be symmetrical. The specifications and sizes of the gaskets shall meet the requirements specified in Appendix 5 of GB50231 General Specifications for Construction and Acceptance of Mechanical Equipment Installation Engineering.
D) Grouting of the driving device and the belt pulley bracket: after the first alignment is qualified, the fine stone concrete is used for the first grouting, and the secondary grouting can be carried out when the strength of the concrete reaches 75%. Note the following: 1) The size of anchor bolt hole meets the requirements;
2) The anchor bolt hole shall be clean and free from sundries;
3) The anchor bolts shall be vertical, and the anchor bolts shall extend the nut 2-3 pitch.
3.Lower installation of belt bucket elevator
(1) the lower part of the belt bucket elevator: the lower part of the belt bucket elevator by the belt pulley and the lower base composition.
The lower part of the bucket lift installation process: the installation process refers to article Installation of intermediate guide wheel
(1) Install the intermediate guide wheel according to the installation drawing of the belt bucket elevator, and measure the deviation of the central axis of the intermediate guide wheel with the hoisting line method.
(2) The installation of an intermediate guide wheel should pay attention to the following:
A) The central axes of all intermediate guide wheels shall be parallel to each other and in the same vertical plane with the central axis of the lower rubber wheel on the bucket loader, with an allowable deviation of ±2mm.
B) The outer contour of all intermediate guide wheels shall be on the same lead vertical plane, with an allowable deviation of ±2mm.
4.Shell installation of belt bucket elevator
(1) structure composition: the belt bucket elevator shell is composed of many sections of the cuboid bolted with flange, the middle with sealing gasket.
2 Installation procedure
A) After the lower belt pulley of the bucket loader is installed, the shell of the bucket loader shall be piecewise assembled according to the specific characteristics of the bucket loader belt. In order to facilitate the installation of the belt and hopper, a section of the shell of the bucket loader close to the belt pulley at the lower part of the bucket loader, a section of the shell at the middle part of the bucket loader and the top cover of the unloading port of the bucket loader are generally reserved. The straightness of the casing of the belt bucket elevator is measured by the method of hoisting wire.
B) Installation of the intermediate support device of the bucket loader shell: Since the bucket loader shell is long and has a certain weight, some intermediate support devices must be installed to support the bucket loader shell. Install according to the installation drawing and installation requirements of the intermediate support device.
C) Casing of belt bucket elevator:
Gasket should be used to seal the connection between the shell section and the section of the belt bucket elevator. The casing straightness of belt bucket elevator should be ≤H/1000 and ≤6mm.
5.Installation of tape and hopper
(1) Adhesive tape connection: the connection method of the adhesive tape has the bolt connection method and the glue method; the connection should meet the following requirements:
A) The two ends of the rubber cloth belt shall be cut into a step shape according to the corresponding cord cloth layer, and the length of the joint shall be 1-2 times of the width;
B) The material of the cement shall have the same elasticity as that of the tape;
C) The joint shall be firm and the added thickness of the joint shall not exceed 5% of the thickness of the adhesive tape;
D) Curing temperature, curing time and normal temperature bonding of adhesive tapes shall meet the requirements of equipment technical documents and adhesives;
E) When the rubber belt adopts bolt or glued joint, it shall lap along the running direction of the belt;
F) The adhesive tape needs pre-pulling, the pre-pulling force should be 1.5-2 times of the working force, and the pre-pulling duration should be 24 hours’) Please refer to the appendix of GB50270 Code for Construction and Acceptance of Continuous Conveying 6.Equipment Installation
The installation of the hopper: according to the belt bucket elevator manufacturer installation drawing and its instructions for installation of the hopper. The following matters should be noted when installing the hopper:
A) Installation shall be carried out in strict accordance with the manufacturer's installation drawing and instructions, and the location and quantity of the hopper shall not be changed at will;
B) Joint installation: the lap length shall span 3 hoppers, and the distance between the connecting bolt axis and the end of the belt shall not be less than 50mm. 7.Installation of accessories
(1) Accessories: adhesive tape belt bucket elevator accessories have tensioning device, belt type backstop device and the external shell adjustment device, tensioning device is to control the distance between the belt pulley on the belt belt bucket elevator, to prevent the belt relaxation; The belt type backstop is to prevent the belt from reversing; The adjustment device of the outer shell is to adjust the straightness of the outer shell to prevent the outer shell from grinding the hopper and affecting the normal operation of the bucket loader.
(2) Install according to the installation drawing and installation instructions of each accessory device.
The installation of bucket lift units shall meet the following requirements:
The installation horizontal deviation of the spindle shall not be greater than 0.3/1000.
(2) The allowable deviation of the lower shaft installation on the tape bucket elevator shall be in accordance with the national installation requirements:
(3) Allowable deviation of the lower shaft installation on the belt conveyor
(4) Upper section, middle section, lower section and inspection door should be well sealed.
(5) The center line of the hopper and the center line of the traction tape should coincide; the deviation should not be more than 5mm; The connecting bolt between the hopper and the traction belt should be properly locked.
8.The adjustment of tensioning device should be flexible; After the traction parts are installed and adjusted, the unused stroke should not be less than 50% of the full stroke.
(1) Upper and middle parts of the extractor shall be provided with firm supports; The casing shall not be deflected, but shall not restrict the free expansion and expansion of the casing in the vertical direction.