**Foreword**
Shandong Xianluo Conveying Machinery Co., Ltd. is a leading manufacturer specializing in advanced material conveying systems, including the FU Chain Conveyor (Patent No. 208144), NE and NSE Plate Chain Bucket Elevators (Patent No. 64720), and DS (SDB) Continuous Bucket Conveyors. The company is dedicated to designing, producing, and innovating next-generation energy-efficient conveying equipment. As one of the earliest, most powerful, and largest enterprises in the industry, it has consistently delivered high-quality solutions that meet the highest standards.
The performance and longevity of the NE-type chain hoist depend not only on its design and manufacturing quality but also on proper installation, operation, and maintenance. In case of sudden failures during operation, identifying the root cause quickly and taking immediate action can significantly reduce downtime and losses.
**Pre-Installation Preparation**
Once the equipment arrives, users should carefully inventory, classify, and inspect all components of the elevator. Store them in a safe, dry location to prevent rust or damage. If any parts are missing or damaged, they must be repaired or replaced before proceeding with installation.
Before installation, verify the dimensions of the building, foundation, or floor hole against the hoist’s specifications. Pay close attention to the position of the drive unit (left or right) as per the design drawings. If discrepancies are found, measure and adjust accordingly to ensure accurate installation.
Prepare all necessary tools and materials before starting the installation process. Ensure that qualified professionals, such as fitters, crane operators, electricians, and welders, are involved in the installation.
**Installation Process**
Begin by leveling the base using a leveler. If uneven, use steel plates to adjust. Then, check the foundation bolts according to the hoist's blueprint.
Lift the head unit and middle casing to their designated positions. During installation, the middle casing may be lifted from top to bottom, connecting each section as needed.
For the hoist installation, temporarily secure the tail device to the foundation. Connect the middle chassis flanges in sequence, using asbestos rope or other suitable seals between the flanges. If non-standard sections are present, install them after the standard ones. Adjust as needed based on actual conditions.
After installing the middle casing, reconnect the head unit and open the upper cover. The first middle section typically includes an inspection opening, located at the lower platform for easy hopper replacement. Every three standard sections (approximately 7.5 meters), install a rail-equipped central housing. When installing the rail section, ensure the inside width of the casing matches the direction of movement: the narrow side is the lifting (tight) side, and the wide side is the return (loose) side.
Maintaining the flange level is critical. Use a level gauge to ensure the casing is properly aligned. The centerline of the casing must be perpendicular to the plumb line. Installation must strictly adhere to the allowable verticality and curvature tolerances listed in Table 1.
**Table 1**
| Overall Height (m) | ≤10 | 10–20 | 30 |
|--------------------|-------|-------|-------|
| Allowable Deviation (mm) | ±4 | ±5 | ±7–8 |
After adjustment, secure the tail assembly to the foundation and install a positioning device in the middle of the hoist to prevent tilting or shifting. The spacing between positioning devices (fixed support frames) should not exceed 8 meters. Place the topmost support frame on the middle section connected to the upper casing. Secure the support frame to the building, but avoid restricting vertical movement.
Due to potential deformation during transport, check the level of the head shaft after the hoist is fixed. Ensure the head and tail wheels are centered once leveling is complete.
When installing the drive unit, bolt the platform to the upper housing. For three-sided platforms, connect all three platforms first, then attach them to the upper housing. Secure the supporting channel steel to the drive platform and middle chassis. Weld the platform and maintenance racks if necessary. Install the drive unit, ensuring the motor and reducer output shafts are parallel to the head wheel shaft. The sprocket size should be centered, with a deviation of less than 2 mm. After adjusting the drive chain, secure the base and install protective covers (sprocket and pulley covers).
Before installing the open chain drive, start the motor to check the rotation direction of the small sprocket. It should match the direction of the traction chain (from the feeding port to the discharge port). If the direction is incorrect, rewire the power lines before installing the drive chain. Once installed, the chain sag should be between 10–30 mm. Fix the lower half of the sprocket cover and add lubricating oil with a kinematic viscosity of 30–40 mm²/s. The drive chain should be immersed in the oil pool up to 6–12 mm.
**Traction Chain and Hopper Installation**
Before installation, check the flexibility of the traction chain joints. If rotation is difficult, clean the rust using gasoline or kerosene and sand until smooth. Do not apply oil.
At the factory, about 4 meters of traction chain is pre-connected for easier handling. After installation, open the tail and middle inspection ports and connect the chain correctly relative to the four-hole plate. Lift two chain hoisting chains from the hoist casing using a chain hoist, drag the chain around the head wheel, and connect it. Use another hoist to lift the tail sprocket assembly to its adjustable range, allowing the traction chain to pass around the tail wheel and connect. Lower the tail wheel assembly, ensuring the unused stroke is at least 50% of the full stroke. Adjust if necessary.
Remove the two traction chains and re-adjust them. Once the traction chain is installed, proceed with hopper installation.
After the traction chain and hoppers are in place, install the lever and heavy box, along with the counterweights. At the same time, connect the inlet and outlet ports to the supporting equipment to ensure smooth material flow. The angle between the non-standard connection section and the horizontal plane should be greater than 50°.
Ensure that the installed hoist can rotate the sprocket smoothly without any collision between moving and fixed parts. If all requirements are met, cover the hoist using asbestos or other gaskets. Tighten all bolts, remove any debris inside, and perform a two-hour no-load test while lubricating the system.
Stud,Blind Standoff,Self Clinching Standoff,Thru-Hole Threaded Standoffs,Nut Standoff
Dongguan Tiloo Industrial Co., Ltd , https://www.sales-fastener.com