7.8m Hydraulic Grapple Forest Crane and Loader
Introduction of 7.8m crane
The main function of the log grabber is to carry out the loading and unloading and handling of wood, timber, reeds, straw and various strip materials. Compared with ordinary excavators, the front end of the log grabber is different, and the front end of the ordinary excavator is a bucket, which is mainly used for excavation and loading operations; The front end of the wood grabber is the wood grabber, which is mainly used for the loading, unloading and handling of strip materials such as wood and wood
Deatails of 7.8m log crane
| Model | TC780L |
| Arm length (m) | 7.8 |
| Rotary torque (kn.m) | 18 |
| Rotation angle | 380° (left190°,right190°) |
| Number of rotating cylinders(piece) | 4 |
| Lifting force at 4 m (kg) | 1880 |
| Lifting force at full length (kg) | 720 |
| Grab swing brake from side to side | yes |
| Grab swing brake back and forth | yes |
| Telescopic boom structure | yes (two telescopic boom, telescopic stroke 2.5 meters) |
| Boom 360° rotary valve | 1pcs |
| One-way throttle valve for 360° rotation of boom | 2pcs |
| balance valve | 1pcs |
| Recommended hydraulic oil flow (l/min) | 45-70 |
| Working pressure (mpa) | 22 |
| Standard rotary motor | GR-30F (3T flange type) |
| The standard grab | TG26 (Maximum Opening1470mm) |
| Total weight (no leg, valve block) | 1210kgs |
- telescopic arms：At timber harvesting sites, telescopic boom log loaders can be utilized to grasp felled logs, consolidate them into piles, and transfer them onto transport vehicles. Whether in coniferous or broadleaf forests, these machines adapt flexibly to various stacking positions and vehicle heights with their versatile operation. In addition, When the sugarcane is ripe for harvesting, the sugarcane grabber (a telescopic boom grabber equipped with specific claws) can work along the ridges of the sugarcane field, grabbing one or more ridges of sugarcane and stacking them neatly onto the transport vehicle, reducing the intensity and workload of manual handling. For sugarcane fields with irregular terrain, the sugarcane grabber can also work flexibly by adjusting the angle and length of the telescopic boom.
Before sugarcane planting, it can also be used to grab and carry sugarcane seeds, and assist in the sowing layout
- Heavy-duty base: the loading weight is more than small one. Also the pipe is more bolded and length is more largeger than standard type, more stable and strong when it works. About length of pipe, heavy tyeps is 1800mm, standard type is 1400mm. In addtion, it’s hard to break since the method of processing is Integral molding cast parts, more strong with large bearing and Heavy-Duty Construction Built to withstand the harsh conditions of logging environments, the crane is constructed from durable materials that ensure longevity and reliability. Its heavy-duty design can handle substantial weights, making it suitable for lifting large timber logs with ease
- Vertical column is An important structural component that supports the entire robotic arm and gripping device. this heavy type designed with Thickening material,
- Enhance structural strength: Bending and torsional resistance as well as Stress dispersion
- Improved stability and accuracy: Vibration suppression， The stout column can effectively absorb the vibration generated by the movement of the robotic arm (especially the impact force at the moment of grabbing), reduce the shaking of the operation, and ensure the accuracy of grasping positioning
- Anti-lateral deflection: When working in complex terrain (such as slopes and muddy ground), the thickened column can resist the fuselage deflection caused by lateral force and reduce the risk of overturning
- Extended service life:
Abrasion and corrosion resistance: By increasing the wall thickness (usually from 10mm to 15-20mm), the anti-wear and anti-rust period of the column under harsh environments (e.g., high humidity in the rainforest, lumber dust) can be extended.
Fatigue Life Improvement: The bold design increases the fatigue strength of critical welded joints, such as the column and chassis joints, by more than 30%, extending the equipment overhaul interval to more than 10,000 hours
7.8m Crane With Telescopic Boom Cylinder With Hydraulic Valve Control, The Hydraulic Piping System Is More Convenient To Operate And More Powerful, Two Sections Telescopic Boom With 2.5m Extension Stroke. And Thickened Manganese Steel Plate To Make Sure The Trailer Log Crane Long Lifetime And Working Well.
Control valve group
The multi-way valve controls the flow direction of the hydraulic oil, enabling independent or combined operations such as opening and closing the gripper, rotation, and lifting
The joystick control system of forest logging grapple crane provides intuitive handling, enabling precise movements of the crane for effective log loading and positioning. This user-friendly interface reduces operator fatigue and enhances overall productivity by allowing for quick adjustments and responsive control.
Application Scenarios
1. Forestry Operations: The Common Use Of Log Grabber In Forestry Is To Transport Wood, Which Can Quickly And Accurately Grab Wood And Move It To The Designated Location, Which Greatly Improves The Efficiency Of Wood Processing. In Addition, The Wood Grabber Can Also Be Used For Tree Pruning And Felling
2. Agriculture: In The Agricultural Field, The Wood Grabber Can Be Used To Process Crops, Such As Straw, Pasture, Etc., Grabbing Them From The Field And Stacking Them For Subsequent Processing And Utilization. In Addition, The Log Grabber Can Also Be Used For Farmland Transformation Work, Such As Digging Ditches, Leveling Land, Etc
4. Industrial & Manufacturing: In The Field Of Industrial And Manufacturing Industry, Log Grabbers Are Widely Used In The Handling Of Various Materials, Including Wood, Sand, Coal, Steel And Other Heavy Materials. It Can Also Be Used As Auxiliary Equipment On The Production Line To Grab And Place Products, Improving Production Efficiency
Brief drawing of 7.8m forestry crane
Tow Behind Design: The tow-behind feature allows for easy attachment to various vehicles, facilitating transport from one job site to another. This flexibility makes it ideal for contractors who need to move equipment frequently between different logging locations.
Technical parameters
| Model | TR120 |
| Air brake | yes( four wheel with 1061 type brake disc) |
| Telescopic beam | yes |
| Warning light | yes (more safe at working environment with poor sight) |
| Loading capacity (kgs) | 12,000 |
| Matched power | 80-100hp |
| Loading area (m3) | 2.8 |
| Total length(mm) | 6,300 |
| Trailer loading length(mm) | 4,300 |
| Total width(mm) | 2,300 |
| Tyre type | 500/60-22.5 |
| Quantity of tyre | 4 |
| Sewing angel | 70 |
| Net weight (kgs) | 2,000 |
Air brake system of trailer: Due to their strong braking power and fast reaction time, air brake systems are commonly used in large trucks, buses and heavy machinery. These vehicles require more braking power and faster reaction times to ensure safety. As for the oil brake, Oil brake : Due to its simple structure and soft response, the oil brake system is more suitable for small cars and SUVs. Due to their small size and light weight, these vehicles do not require much braking force, so the oil brake system is more suitable
