Power Take-Off (PTO) Shaft Features
A tractor's PTO is typically located at the rear and delivers torque at a specific speed (usually 540 rpm or 1000 rpm, though some larger tractors support both). Its speed and power are matched to the tractor's engine power (usually between 20 and over 100 horsepower).
Transmission Path
The tractor's power take-off (PTO) is connected to the backhoe's transmission via a universal joint (with a safety guard). The transmission adjusts the speed by using gear reduction (or speed-up) to transmit power to the auger's main shaft, which drives the drill bit.
Some models also feature a hydraulic system (powered by the tractor's hydraulic pump) to control the drill bit's elevation and tilt, enabling precise adjustment of the backhoe's depth and position.
Cooperative Operation
The tractor's travel function allows the backhoe to move, eliminating the need for additional human labor. The tractor's counterweight and tire grip offset the reaction torque generated by the rotating drill bit, ensuring operational stability.
Gardening Tools Ground Drilling
The tractor's power take-off (PTO) is a highly efficient power source for driving external diggers and augers. Leveraging the tractor's powerful power and stability, it enables efficient excavation of medium to large holes.
Connection Methods
Three-point hitch: The most common connection method, the excavator is connected to the three-point hitch mechanism on the rear of the tractor via upper and lower tie rods. This allows for quick raising and lowering, and securing the equipment to suit the working height requirements of various terrains.
Towing: Large excavators (such as those with drill heads over 1 meter in diameter) may be connected to the tractor via a towbar, with hydraulic outriggers for enhanced stability. This is suitable for working in extremely deep or hard ground.
Drill bit: The component that directly contacts the soil for excavation. Different types are available depending on the job requirements:
bit: The most common type, consisting of a central shaft and spiral blades that transport soil upward and out of the pit. Diameters typically range from 10-60 cm.
Alloy bit: An auger bit with an alloy blade embedded in its rim is suitable for difficult terrain, such as hard soil and gravel, and offers enhanced wear resistance.
Reamer bit: Expands the diameter of an existing hole for specialized planting or installation needs.
Key Features of Drilling Machine
- Auger sizes range from 4" to 20" (100mm to 508mm), suitable for a variety of digging sizes and soil types.
- Backhoe, three-point linkage, Class I
- Required power: 30-60 hp
- Driven by a PTO universal shaft, mounted on a four-wheel tractor
- PTO shaft and auger are CE-compliant
- Depth control: By controlling the time the drill bit enters the soil or setting depth marks on the drill rod, the digging depth can be precisely controlled to meet different operation requirements.
01
Universal joint drive shaft
Select a drive shaft with a length and cross-shaft specifications that match the PTO speed and torque to avoid vibration or damage caused by excessive drive angles (generally recommended to be ≤15°).
02
Gearbox
Adjust the output speed (typically 50-300 rpm) based on soil hardness and drill bit diameter. Hard soil and gravel require low speed and high torque, while soft soil can increase speed for improved efficiency.
03
Auger bit
Drill bits that match the tractor's power typically range in diameter from 30-150 cm. They are typically made of high-strength alloy steel and feature an optimized blade helical angle to ensure efficient soil removal. For rocky strata, alloy drill bits with insert teeth can be used.
04
Transmission system
Transmits the power from the power source to the drill bit, usually composed of a clutch, drive shaft, reduction gears, etc., to achieve efficient power transmission and speed regulation.
| Ground Drilling Machine MODEL | PD-18 | PD-20 | PD-30 |
| Operation diameter mm | 180 | 200 | 300 |
| Matching HP | 18--35 | ||
| Operation depth mm | 1200 | ||
| Operation efficiency(one/ min.) | 1~3 | ||
| Weight kg | 180 | 190 | 210 |
| Whole size mm | 2300*800*600 | ||
| PTO(r/min) | 540/720 | ||
|
Model
|
PD- 6
|
PD-9
|
PD- 12
|
PD-14
|
PD-18
|
PD-20
|
PD-24
|
|
Auger Diameter(mm)
|
150
|
200
|
300
|
350
|
450
|
500
|
500
|
|
Power Match(hp)
|
35
|
40
|
40
|
40
|
50
|
50
|
50
|
|
Input Rotate Speed(rpm)
|
540
|
540
|
540
|
540
|
540
|
540
|
540
|
|
Dig Depth(mm)
|
800
|
800
|
800
|
800
|
800
|
800
|
800
|
|
Packing size (m)
|
2X0.85X0.4
|
2X0.85X 0.4
|
2X0.85X 0.6
|
2X0.85X0.6
|
2X0.85 X0.7
|
2X0.85 X0.8
|
2X0.85 X0.8
|
|
Weight(Kg)
|
126
|
144
|
149
|
152
|
174
|
186
|
195
|
Drive Path for Drilling
The tractor's PTO is connected to the backhoe's gearbox via a universal joint (with a safety shield).
The gearbox adjusts the speed through gear reduction (or acceleration), transmitting power to the auger's main shaft, which drives the drill bit.
Some models also feature a hydraulic system (powered by the tractor's hydraulic pump) to control the drill bit's elevation and tilt, enabling precise adjustment of the backhoe's depth and position.
Cooperative Operation: The tractor's travel function drives the backhoe, eliminating the need for additional manpower. The tractor's counterweight and tire grip offset the counter-torque generated by the rotating drill bit, ensuring operational stability.
Features and Advantages of Hole-Drilling Machines
Compared to handheld or small earth augers, tractor-driven hole-drilling machines/augers offer the following advantages:
- Powerful Power: Leveraging the tractor's high horsepower, they can dig deeper holes (2-5 meters, with some models reaching over 10 meters) and larger diameters, adapting to hard soil, clay layers, gravelly soil, and even light rock formations.
- High Efficiency: For example, a hole-drilling machine equipped with a 50-horsepower tractor can dig a hole 50 cm in diameter and 2 meters deep in just 1-3 minutes, significantly faster than manual labor or smaller equipment.
- Stable Operation: The tractor's own weight (1-10 tons) offsets the drill bit's reaction force, preventing the machine from "jumping" or drifting, and ensuring the hole's verticality and regularity.
- Versatile Adaptability: By replacing drill bits of different specifications, they can meet diverse needs, such as laying utility poles, planting fruit trees, digging foundation piles, and geological exploration. Combined with the tractor's off-road capabilities, they can operate in complex terrain, including mountainous areas, slopes, and fields.
Typical Applications of Excavation Auger Drills
- Power and Telecommunications Engineering: Excavation of foundation pits for utility poles and communication towers (50-120 cm diameter, 2-3 m depth).
- Agriculture and Forestry: Planting pits for large fruit trees (such as walnuts and chestnuts) (40-80 cm diameter, 1-2 m depth), and installation of shelterbelt posts.
- Municipal and Infrastructure Engineering: Excavation of streetlight poles, traffic signal poles, and fence posts, and small foundation pile holes.
- Geology and Exploration: Preliminary excavation of shallow geological sampling pits and environmental monitoring wells.
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