Komatsu PC220 Sitting Cabinator Cabin

Detailed product information

Classification by structure and functions

Ordinary seats: usually use a strong metal frame with spongy pillows and backs, and the surface is covered with wear -resistant skin or fabric. It has the main functions for sitting and standing and can provide the driver with certain support and comfort.

Amortizing seat: equipped with mechanical or hydraulic shock -absorbing devices that can effectively reduce the vibration that occurs during the operation of the excavator, for example, a hydraulic shock -absorbing seat, which regulates the height and shock -absorbing effect of the seat using a hydraulic system. Some models also have a suspension function that allows the seat to move freely in a certain range, which additionally improves amortization characteristics.

Multifunctional seats: in addition to the amortization function, they also have many adjustment functions, for example, the seat can be adjusted forward and backward and down, the angle of inclination of the back, the height of the armrests, etc. Some of them even have built -in heating and ventilation functions To adapt to various working conditions and the needs of the driver.

According to the material

Fabric: usually used materials include the skin, which is soft, wear -resistant and easily cleaned, as well as breathing and relatively inexpensive fabrics.

Rama: It is mainly made of high -strength steel, which provides the strength of the structure and stability of the seat, and also allows you to withstand the weight of the driver, as well as the vibration and blows of the excavator during operation.

Filler: Basically, a sponge that provides varying degrees of softness and support depending on density and hardness. A high -quality sponge also has good elasticity and can maintain its shape for a long time.

Stages of installation

Preparation: Prepare the necessary tools, such as wrenches, screwdrivers, etc., as well as a new seat that will be installed, and possible installations, such as bolts, nuts, washers, etc. At the same time, make sure, make sure that that the excavator is parked in a safe place, turn off the engine and disconnect the power.

Removing the old seat: use the appropriate tools to weaken and remove the bolts or nuts that attach the old seat, remove the old seat from the installation site and be careful to save the removed details.

Clean the installation site: clean the seat installation site of dust, garbage and rust, check if the installation surface is even and if there are any problems, eliminate them in a timely manner.

Install a new seat: install a new seat in the installation site, combine the mounting holes, install the bolts and gaskets, and then with the help of a wrench or screwdriver pre -tighten the nut, but do not tighten them completely to ensure the possibility of subsequent adjustment.

Advise the position of the seat: adjust the front and back of the seat, height, inclination angle, etc., as necessary, to install it in a convenient position, providing the driver convenience of control, good overview and comfortable driving.

Tighten the fasteners: after adjusting the seat position, tighten the fasteners or nuts in accordance with the indicated puffing moment to ensure a reliable installation of the seat.

Inspection and testing: run the excavator and check if the seat is reliably installed, whether there is a backlash or abnormal shaking. At the same time, use various functions of adjusting the seat, such as moving forward and backward, adjusting the back, etc., to ensure its normal functioning.

Common malfunctions

Malfunction of the adjustment function: a seat with electrical adjustment may not move forward and backward, the height adjustment may not work, the angle of inclination of the back may not be adjusted, etc. The reasons may be a malfunction of the control engine, damage to the control switch, a line break or short circuit, burning out fuse, etc.

Reducing the efficiency of depreciation: the effectiveness of depreciation of the shock -absorbing seat worsens, which can be caused by a leakage of hydraulic oil inside the shock absorber, weakening or damage to the elasticity of the shock absorber, wear of the components of the shock absorber, etc.

The problem with unusual noise: if the seat makes unusual noises, such as a creak or clicks during use, this can be caused by weakened joints on the seat frame, dirt or wear of the guide seats or weakened joints between the back and the seat pillow.

Damage to the surface of the seat: the skin or fabric of the seat can be worn, torn, faded, etc., which affects appearance and comfort. This is mainly caused by prolonged use, friction from the driver and the influence of sunlight.

Electric system malfunction: seats with heat and ventilation functions can have problems such as heating or poor ventilation. Usually this is caused by a cliff of the heating wire, the fan failure, the refusal of the temperature sensor or the problem with the corresponding control scheme.

After -sales service

Warranty service: Usually the warranty period for excavators seats is 1 year. During the warranty period, if there is a malfunction or damage due to problems with product quality, the manufacturer or supplier will provide free repair or replacement.

Supply of accessories: the possibility of timely supply of original and authentic accessories for seats, such as adjusting engines, shock absorbers, fabrics, bolts, etc., to ensure the quality and compatibility of accessories and meet the needs of users in maintenance.

Technical support: Manufacturers or dealers will provide users with professional technical support, answer users' questions for installing, using, maintenance, etc. By phone, online, etc., as well as organize an on -site technical personnel to provide services if necessary .

Maintenance: We have a professional maintenance team and a network of after -sales maintenance, which can provide maintenance services from the door to the door, or users can send equipment to assigned places of service for service. Some common malfunctions can be quickly diagnosed and eliminated.

To evaluate how good the depreciation characteristics of the excavator seat can be proceeded from the following aspects:

Subjective sensations:

Vibration intensity: when the excavator works as usual, especially when moving or performing operations such as soil excavation and crushing, which create strong vibration, sit in the seat and feel the intensity of the vibration that you experience. If you clearly feel strong vibrations transmitted to your body, even causing physical discomfort and difficulties with sitting, this means that the amortization characteristics of the seat are bad; A good shock -absorbing seat should be able to effectively extinguish vibrations so that vibrations felt by the body are relatively weak.

Comfort: After prolonged work at the excavator, pay attention to the degree of physical fatigue. If the effectiveness of depreciation is good, the seat can reduce the effect of vibration on the body, and the body will not experience excessive fatigue due to vibration; On the contrary, if the effectiveness of depreciation is poor, the body will quickly experience fatigue, such as soreness and numbness, especially in parts that are in contact with the seat, such as waist, buttocks and back.

Sustainability of work: Follow the stability of the seat during work. If the seat has good depreciation characteristics, then even if the excavator is in working condition with high vibration, the seat can remain relatively stable without significant shaking or displacements, which helps the driver more accurately control the control device; If the seat shakes significantly during vibration, affecting the accuracy and comfort of the work, this indicates the availability of problems with the characteristics of depreciation.

Pay attention to the components of the seat:

The appearance of the shock absorber: Check the seats shock absorber (if it is a hydraulic or mechanical shock absorber seat) to make sure that there are no oil leaks, deformations, damage, etc. The leakage of oil from hydraulic shock absorbers will lead to a decrease in the fluid level in shock absorbers, thereby reducing the efficiency of amortization ; Deformation or damage to the mechanical components of the shock absorber will also affect its normal depreciation function.

Connecting details: Check if the connecting parts are weakened between the seat and the base, as well as between the shock absorber and the seat and the base, for example, bolts and nuts. Weakened compounds can lead to excessive shaking of the seat during vibration, which will loosen the shock -absorbing effect and can lead to damage to other components.

The state of the spring: For seats with a spring depreciation, check if the spring is deformed, whether it is broken and whether it has lost its elasticity. Deformation or breakdown of the spring directly affects its ability to amortize vibrations, and the spring that has lost elasticity cannot effectively absorb vibration energy.

Comparative test:

Compare with good seats of the same model: if you have several excavators of the same model and one of them has good depreciation, you can sit on different seats to feel vibration. By comparison, it is possible to more clearly determine whether the depreciation of the target seat corresponds to the norm.

Testing without load and under load: feel the effect of seats depreciation when the excavator is in a state without load and under load. Excavator vibration is usually more under load. If the effect of the seats is acceptable when it is not loaded, but the vibration clearly increases at load, this means that its depreciation characteristics are bad when it is under a large load and may not meet real working needs.

Professional testing:

Devices for measuring vibration: use professional devices for measuring vibration, such as accelerometers, to measure the vibration parameters of the seats in various working conditions, such as vibration, frequency, etc. Comparison of measurement results with design standards or a normal seature range allows you to accurately determine, it allows you to accurately determine, Are depreciation characteristics good.

Ask a professional to evaluate: invite professional technicians involved in the repair and maintenance of excavators to assess the effectiveness of the seats depreciation. Due to their rich experience and knowledge, they can more and more accurately determine whether there is a problem with the system of depreciation of the seat, and give appropriate sentences and solutions.

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