Product Manual for 360° Stationary Rotating Swivel Boom and Foldable Engine Crane

I. Product Specifications (Including Two Core Product Types)

(I) 360° Stationary Rotating Swivel Boom

(II) Foldable Engine Crane

II. Product Details

(I) 360° Stationary Rotating Swivel Boom

1. Balance Between Flexibility and Load Capacity: The 450kg model supports 230kg light load (e.g., small agricultural machinery parts, outdoor tools) and 450kg heavy load (e.g., gearboxes, small engines); the 900kg model can handle heavy needs such as construction steel pipes and large feed mixers. The 360° rotation allows operation without moving the pickup, and the maximum radius of 1295mm covers the surrounding operation area, improving work efficiency by 40% in narrow spaces (farmland, rural roads).
2. Balance Between Stability and Portability: The 270mm×270mm square base is fixed to the truck bed via 4 sets of high-strength bolts, with no displacement under a 500kg load. The total weight is ≤50kg, allowing installation by two people. The component packaging is small (maximum 113×32×18cm), which does not affect the daily cargo transportation of the pickup.
3. Durability and Universal Compatibility: The boom is welded with Q345 high-strength steel, and its surface undergoes phosphating + anti-rust spray treatment, with a salt spray test of 48 hours, adapting to outdoor rain and dust. Multiple sets of adjustment holes are reserved in the base, compatible with mainstream pickups such as Ford, Toyota, and Great Wall, without the need for customized brackets.

(II) Foldable Engine Crane

1. Labor-Saving and Efficient Hydraulic Model: The operating force of the single-piston hydraulic pump is only 1/3 of that of the standard model. The 4 load gears (250-1000kg) are accurately compatible with lifting needs from small motors to 1-ton engines. The 1500mm frame height can easily lift components to the maintenance platform, avoiding injuries caused by manual handling.
2. Stable and Reliable Standard Model: With a 1470mm high frame + 978mm wide base, it can operate stably on both workshop concrete floors and outdoor dirt roads. Its weight of 76kg makes it suitable for fixed workstations, and the plywood case packaging facilitates long-distance transportation.
3. Space-Saving Folding Design: The volume of the hydraulic model is reduced by 60% after folding, and the standard model can further compress storage space by disassembling components, making it particularly suitable for scenarios with limited space such as repair shops and agricultural machinery stations.

III. Application Scenarios

(I) Application of 360° Stationary Rotating Swivel Boom

1. Outdoor Maintenance Scenario for Agricultural Machinery: In farmland, a pickup equipped with a 450kg boom lifts tractor plows (approximately 200kg) in the 230kg gear, or disassembles harvester gearboxes (approximately 350kg) in the 450kg gear. The 360° rotation allows alignment with maintenance points without moving the vehicle, and the minimum radius of 930mm enables close-range operations, avoiding strains caused by manual handling. It is particularly useful in remote areas without fixed equipment.
2. Small-Scale Cargo Transportation Scenario at Construction Sites: At construction and decoration sites, the 900kg boom transfers steel pipe bundles (approximately 800kg) and cement boards (approximately 600kg). The maximum radius of 1295mm lifts cargo from the ground to the pickup truck bed or unloads it to the second-floor construction platform, eliminating the need for large cranes and reducing costs. The folded height of 1355mm does not occupy much space in the truck bed, allowing simultaneous loading of tools.
3. Equipment Handling Scenario in Livestock Farms: In large-scale livestock farms, the 900kg boom lifts 700kg feed mixers and 500kg water troughs. The maximum lifting height of 1800mm lifts equipment to the second-floor platform, and the 270mm×270mm stable base does not shake on uneven ground, avoiding equipment dumping and pollution of the breeding environment.

(II) Application of Foldable Engine Crane

1. Engine Disassembly and Assembly Scenario in Auto Repair Shops: Repair shops use hydraulic cranes to disassemble car engines (approximately 400kg) in the 500kg gear and install light truck engines (approximately 800kg) in the 1000kg gear. Hydraulic drive enables smooth lifting and lowering, avoiding component collisions; the 4 load gears accurately match the weight, preventing damage due to overloading.
2. Heavy-Duty Maintenance Scenario in Agricultural Machinery Stations: Agricultural machinery stations use standard cranes to handle 800kg tractor engines and 600kg harvester gearboxes. The 1470mm frame height is compatible with the tall body of agricultural machinery, and the 978mm width stably supports components. It is folded for storage when not in use, saving workshop space.
3. Equipment Relocation Scenario in Factories: Factories use hydraulic cranes to move 300kg motors and 750kg small machine tools. The wheel set design is compatible with workshop floors, allowing operation by one person. The component packaging facilitates transfer between different production lines, improving equipment deployment efficiency.

IV. Frequently Asked Questions (FAQs)

(I) FAQs About 360° Stationary Rotating Swivel Boom

1. What to Do If the Boom Gets Stuck During Rotation and Cannot Turn Smoothly?
   • Clean and Lubricate: Use a high-pressure air gun to blow off dust from the rotating joint, wipe oil stains with a rag dipped in diesel, then apply Grade 3 lithium-based grease (covering the bearing balls) and rotate the boom repeatedly 5-10 times.
   • Check the Bearing: If jamming persists, remove the joint end cover and check for rust or chips on the bearing. If damaged, replace it with a double-row radial ball bearing (specification: inner diameter 20mm, outer diameter 47mm, thickness 14mm).
   • Inspect for Deformation: If overloaded or collided, visually check if the boom is symmetrical. Slight deformation can be corrected by lifting a 300kg load and fine-tuning; severe deformation requires manufacturer replacement.
2. The Base Shakes During Lifting, and There Is a Gap Between the Base and the Truck Bed. How to Handle It?
   • Diagonal Tightening: Loosen bolts and retighten them in a "top-left → bottom-right → top-right → bottom-left" order in 2-3 increments, with a torque of 40-45N·m to ensure the base fits the truck bed.
   • Add Washers: For uneven truck bed beams, place 3mm thick rubber anti-slip washers (270mm×270mm with bolt holes) between the base and the bed to fill gaps and enhance friction.
   • Adjust Hole Positions: If the base holes deviate from the truck bed holes by more than 5mm, slightly enlarge the holes with a 10mm drill to ensure bolts pass vertically, avoiding base warping.

(II) FAQs About Foldable Engine Crane

1. The Boom of the Hydraulic Crane Cannot Lift or Lower, and the Hydraulic Pump Has No Pressure Output. What to Do?
   • Check Oil Level: Open the oil tank cover; if the oil level is below the scale line, add 46# anti-wear hydraulic oil to the normal level.
   • Inspect for Leaks: Check hydraulic pipe joints for oil stains; if leaking, replace the gasket and tighten (torque: 15-20N·m).
   • Reset the Valve: If the pressure relief valve is open, tighten it clockwise and test the lifting function again.
2. The Wheel Set Gets Stuck During Movement, and the Crane Deviates from the Route. What Is the Reason?
   • Clean the Axle: Remove dust and debris from the wheel axle with a brush, apply lithium-based grease, and test wheel rotation.
   • Check Tires: If rubber tires are worn (tread depth <1mm) or deflated, replace them with tires of the same specification (recommended: diameter 150mm, width 50mm).
   • Adjust Wheelbase: For the hydraulic model, tighten the wheel axle bolts (torque: 30-35N·m) to ensure the wheel set is parallel if loose.
3. The Crane Still Occupies a Large Space After Folding. How to Optimize Storage?
   • Disassemble the Hydraulic Model: Separate the boom from the main frame; store 16kg small components in a tool cabinet and place the 55kg main frame against the wall to use vertical space.
   • Compress the Standard Model: Remove the wheel set and auxiliary brackets, fold the frame, and secure it with straps. Store it under a shelf or in a workshop corner to reduce the floor area by 60%.

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