What Is A Walk Behind Roller

Walk behind road roller is a road roller that uses both hands to carry out compaction operations. It is driven by a transmitter but has no cockpit. Carry out compaction operations when driving in.


walk behind vibratory roller


In the construction and construction of road airports, ports, dams, and housing foundations, small road rollers are indispensable and important construction machines.

Walking rollers can be broadly divided into vibratory rollers and static rollers.

Vibratory rollers can be divided into 2-amplitude, 6-amplitude, and 8-amplitude, etc., and further refinement is to distinguish models according to their own weight, amplitude, and exciting force.


In addition, it is distinguished according to the driving mode, transmission mode, operation mode, etc., such as full drive or rear drive, hydraulic or mechanical, and so on.


There are single-steel wheels and double-steel wheels used for vibratory rolling, but these two types can also be used for static rolling when the vibration is not turned on. The rubber wheel roller is dedicated to static rolling.


Conventional use is: single steel wheel is used on the roadbed, double steel wheel and rubber wheel are used on oil surface. However, depending on the construction process and materials, double steel wheels and rubber wheels will also be used on the roadbed.


What is a walk-behind roller used for?


  1. Garden landscape, residential landscape, golf course application.


The construction of the landscape pays more attention to the design of the style. Not all places need to be compacted, and the construction of the golf course is the same, so walking rollers will be used.


  1. Compaction of sidewalks and maintenance of road surfaces.


It is obviously inappropriate to drive a walk-behind road roller for road maintenance, but for paving sidewalks, compacting the edge of the ditch, and compacting asphalt at the corner of the road, a walk-behind road roller is required.


  1. Narrow construction sites or occasions sensitive to weight.


The walk-behind road roller can fulfill the operational requirements in this scene with high efficiency and high quality, and its role is irreplaceable.


  1. Highway pipeline or abutment backfill


When backfilling road pipelines or abutments, road rollers and walk-behind rollers can be used to work together at this time, because the road roller has a large water tank, which can avoid water transportation back and forth, wasting work time, and the handle of the road roller is all It is foldable for easy operation and storage.


walk behind roller


Features of walk-behind vibratory rollers


The walk-behind road roller has the characteristics of small size, reasonable structure, etc., easy to transport, large working force, and high efficiency. It can also be used in conjunction with large road rollers. The drums of the walk-behind roller prevent dirt and asphalt from accumulating, making compaction smoother. The adjustable and foldable operating handle brings a comfortable operating environment to the operator, and it is convenient for transportation or storage after being folded. The walk-behind road roller is easy to maintain and has a wide range of applications, suitable for high curb clearance and small side clearance. Especially suitable for compacting against walls and road rocks.


1) LWB series small vibratory roller adopts hydraulic two-wheel drive, independent mechanical vibration, hydraulic service brake, hydraulic steering, advanced performance, and technology priority;


2) Using the control joystick, this small vibratory roller can realize forward and backward, step-less speed change, and service braking; electronic buttons are integrated into the handle to control the start and stop of vibration, and the operation is light and convenient ;


3) The front and rear frames of the small vibratory roller are hinged with four-point contact bearings, and the hydraulic steering is controlled by electronic buttons, which is flexible and labor-saving;


4) It adopts an imported travel pump and travels motor, with advanced performance;


5) The appearance of the whole machine adopts a streamlined design, compact structure, simple and beautiful.



  1. Performance:


The mechanical properties of the roller include strength, plasticity, hardness, impact toughness, multiple impact resistance, fatigue limit, etc.


1) Strength, strength refers to the ability of the metal material of the walk-behind roller to resist permanent deformation and fracture under the action of external force. Because the load acts in the form of stretching, compression, bending, shearing, etc., the strength is also divided into tensile strength Strength, compressive strength, flexural strength, shear strength, etc., there is often a certain relationship between various strengths, and tensile strength is generally used as a relatively basic strength index in use.


2) Plasticity, plasticity refers to the ability of metal materials to produce plastic deformation without destruction under load.


Walk behind roller specifications


Model YSW080H YSW030HE
Quality of work /kg 800 290
Amplitude /mm 0.5 0.5
Vibration frequency /Hz 55 75
Exciting force /kN 18 12
Maximum walking speed km/h 4 1.8
Gradeability /% 30 20
Turning radius /mm 3100
Vibration wheel width × diameter /mm 635×350 560×400
Wheelbase /mm 690
Minimum ground clearance /mm 180
Diesel model 186F GX160
Diesel engine power /kW 5.68 4
Dimensions /mm 2400x760x1135 1430x710x950


Analysis of Pavement Compaction with walk behind Small Road Roller


At present, when the walk-behind small road rollers are performing compaction operations, they all use high-frequency and low-amplitude working methods. The amplitude has a great impact on the foundation. The purpose of road compaction with walk-behind small road rollers is to increase the compactness of the asphalt surface layer without affecting the over-compaction of the base layer and causing damage. Therefore, only high-frequency and low-amplitude compaction can be performed, (the base layer must have low-frequency high-amplitude compaction).


High-frequency vibration means that the frequency of vibration is more than that of ordinary walk-behind small road rollers at the same time. The advantage of high-frequency vibration is that at the same time and in the same rolling area, the ground is subjected to more pressure times. To put it simply, the soil and rocks under your feet are soft. If you step on it with one foot, you must not step on it twice to make the footprints deeper, that is, to achieve a higher compaction coefficient of the road surface.


The advantage of low-amplitude vibration is that the vibration noise of the walk-behind small road roller is small, which can reduce the disturbance caused by construction and other problems.


Therefore, the advantage of high-frequency and low-amplitude is that they can reduce construction noise under the compaction coefficient that high-amplitude vibration can achieve. Of course, high-frequency vibration has greater requirements for mechanical horsepower.


What’s the matter if the walking roller doesn’t vibrate?


The vibration system of the walking roller is very important. If there is a problem with the vibration system of the walking roller, it will seriously affect the construction effect.


First of all, we analyze the reason why the walking roller does not vibrate. The road roller mainly adopts the mode of vibration, and the vibration mode includes two mechanical modes of electromagnetic clutch and block vibration. These two modes mainly cause the vibration caused by the eccentric driving of the gasoline engine by the block on the road roller. Therefore, once there is a failure that the vibratory roller does not vibrate, it is likely that there is a problem with the shaft supporting the throwing block. This kind of problem is mainly caused by careless welding, so simple repairs will do. . In addition, there may be a failure of the electromagnetic clutch or a problem with the oil line of the roller, which leads to the failure of the roller.


Next, let’s talk about how to solve it. First of all, you should check the circuit of the roller. During the inspection, use a wire to connect one end to the power supply, and the other end to the live wire end of the solenoid valve drive coil. If the solenoid valve vibrates, it indicates that the power circuit is faulty, and the circuit should be checked. Check and deal with any faults found. If the vibratory roller still cannot vibrate after connection, the solenoid valve should be removed, and the valve core should be manually pushed. After the vibrating wheel vibrates, it indicates that the solenoid control coil is damaged; you can also use the wire to scrape the fire with the terminal post of the live wire of the solenoid valve. If there is a spark, the solenoid coil is disconnected. If sparks appear, it means that the electromagnetic coil is working normally, but it still cannot vibrate, which means that the slide valve is stuck, and the valve body needs to be checked.


Attention to the use of walk-behind road rollers

When the walk-behind road roller is running, if you find that the reversing clutch or the vibrating clutch is slipping, you should stop immediately, walk the road roller, and disengage the main clutch; you must check, adjust and troubleshoot the reversing clutch or vibrating clutch. Don’t increase the accelerator and try to drive with high speed and high power, otherwise, the clutch plate will be burned;

When the walk-behind road roller changes the driving direction, the reversing handle must first be pulled from the forward (reverse) position to the neutral position, and then the handle should be pulled to the backward (forward) position after the road roller stops. Do not pull it in place at one time, so as not to damage the machine parts due to a sudden change of driving direction;

When multiple rollers work together, the distance between them should be greater than 2.5m to avoid collisions or steering difficulties;

It is strictly forbidden to vibrate on a hard road surface, so as not to damage the vibration-damping device or other parts;


Walk behind roller maintenance


After the construction machinery leaves the factory, it is generally stipulated that there is a running-in period of about 60 hours (some are called run-in periods), which is stipulated by the manufacturing factory based on the technical characteristics of the construction machinery at the initial stage of use.

The running-in period is the main link to ensure the normal operation of construction machinery, reduce the failure rate, and extend its service life. But at present, some users ignore the special technical requirements of the running-in period of the new machine due to a lack of common knowledge on the use of construction machinery or because of tight construction schedules or want to get benefits as soon as possible.

Some users even think that, anyway, the manufacturer has a warranty period, and the manufacturer is responsible for repairing the machine if it breaks down, so the machine will be overloaded for a long time during the running-in period, resulting in frequent early failures of the machine, which not only affects the normal use of the machine, The service life of the machine is shortened, and the progress of the project is affected due to the damage of the machine.

Therefore, sufficient attention should be paid to the use and maintenance of the break-in period of construction machinery.


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