Excavators, Special vehicles and Equipments

Here we have explained the most relevant topics as per your syllabus, previous year questions papers and our personal experiences. Every topic is defined in the easiest and most affordable way that can be made accessible to everyone.

* Excavators:
Excavator is a machine that can excavate the soil of various types forcefully and then using the hydraulic system, a hydraulic force is generated and utilizing this force bucket is pulled back towards the machine. The bucket of excavator is of replaceable type. If front bucket is exchanged with any other attachment then excavator can be used for multi-purpose. Such as: pile diver, hydraulic jack hammer etc.

Pic 1: Excavators

Excavator comes in various sizes depending on bucket size, length of boom, length of arm, and operation speed. Performance of an excavator can be measured from its production cycle. Production cycle is the time that an excavator takes to load the bucket from source, swing, dump, return back and then dig again. Therefore, the faster the operation speed, the faster will be the one complete cycle and hence will result in increase in production cycle.


* Scrapers:

Scraper, in engineering is the machine used for moving earth over short distances (up to about two miles) for relatively smooth areas. Either self-propelled or towed, it consists of a wagon with gates having a bladed bottom. The blade scrapes up the earth as soon as the wagon pushes forward and forces the excavated material into the wagon. Now when the wagon is filled up, the gate is closed, and the material is carried upto the place of disposal. The scraper is one of the dominant tool in highway construction.

Pic 2: Scraper

* Crane:

Pic 3: Crane

A crane is a type of construction machine that is used to move the loads horizontally. Equipped with a hoist rope, wire ropes and sheaves, it can be used to lift heavy loads or transport them to other places. The mechanical advantages created by its components on the crane can produce powerful strengths.

The cranes contains truck crane, all-terrain crane, rough-terrain crane, tower crane and crawler crane which are used to assemble, disassemble and transport the construction materials in the industrial and civil construction, suitable for the transportation, farmlands, oil fields and war industry projects.

* Ripper:

Excavator rippers can cut quickly through rocks, shale or ice. It makes digging in hard soil easier and productive. The Rock Ripper is one of the perfect attachment to cut through any hard terrain that encountered in your work environment.

Pic 4. Ripper

* Semi Trailer

Here is a ‘semi-trailer’. A semi-trailer is a trailer without the front axle. Semi-trailers usually have legs to support them when they are not in use. A semi-trailer is meant to be towed by a ‘road tractor unit’. The front of the semi-trailer usually sits on a coupling on top of the tractor’s tail. This assembly (tractor + semi-trailer) is known as a ‘semi-trailer truck’.

Pic 5: Semi Trailer

* Low bed Trailer:

A lowbed trailer is a typical semi-trailer with two drops in deck height: one right after the gooseneck and one just before the wheels. This permits the deck to be extremely low when compared with other trailers. It offers the ability to carry most of the legal loads upto 12 ft (3.66 m) tall, to which other trailers cannot. Lowbed trailers are used to haul heavy equipments such as bulldozers, industrial equipment etc..

Pic 6: Low Bed Trailer

Note : For any queries or questions you can directly mail me. Or just dm me on instagram @chakitg. 

Regards:  
Er. Chakit Gupta