An engineering demolition vehicle, or simply IMR, is a technique that was created on the basis of a medium tank. The basis was the T-55. The main purpose of this unit is to lay roads on rough terrain. In addition, it can be used to equip the column road after the use of nuclear weapons, for example.
general description
The demolition engineering machine has bulldozer-type equipment, which is distinguished by great power. In addition, a telescopic boom with manipulator is also available. In addition, it is worth noting that the machine has a sealed structure and has anti-atomic protection. Another distinctive feature of the engineering clearing machine, which strongly distinguishes it from the background of other equipment, is the ability to move under water. IMR is able to be at a depth of 5 meters.
In addition to these advantages, this unit has several more. These include the radio station model R-113 or R-123, a fire extinguishing system, and also a chemical reconnaissance device. It is worth adding to the description that the IMR has a filter-ventilation unit. It allows you to operate the equipment in those places where contamination with radioactive substances is observed. In addition, this protective mechanism is considered quite reliable and high-quality, and therefore the entire crew inside can do without personal protective equipment if no one plans to leave the cabin.
The main differences between IMR and T-55
As mentioned earlier, the engineering clearing vehicle was constructed on the basis of the T-55 medium tank. To do this, I had to change the design in a certain way. The following changes have been made:
- special reinforcement sheets were welded to the bottom of the IMR, and the design of the turret formation was also changed;
- a tower was welded to the top sheet of the hull of the former tank, in which the driver is now located;
- some changes also appeared in the transmission - the “Guitar” from BTS-2 was installed;
- all observation devices with which the tank was equipped were replaced with small viewing windows;
- the night-vision device , from TVN-2 to PNV-57, was also replaced.
As for the working parts of the engineering demolition machine, they include bulldozer and boom equipment, as well as a scraper-baking powder, a power take-off and hydraulic drive mechanism.
Description of the device
As for the boom equipment, its main purpose is as follows.
- Transportation of beams, plates, debris and other bulky items.
- Great for arranging walkways among forest or mountain blockages.
- Well suited for digging out entrances to littered shelters.
In addition to the listed types of work, an engineering IMR fencing machine using boom equipment can successfully perform loading and unloading and other types of work.
If we talk about the design, the boom equipment is a rotary telescopic boom with an invader-manipulator. If we discuss its characteristics, then they are as follows:
- At the maximum reach of the boom, its carrying capacity is 2 tons.
- The maximum height at which the WID is capable of lifting the load is 11 meters, and the boom reach is limited to 8.835 meters.
Structural elements
A rotary platform is installed on the roof of this machine. There is a turret place to which the inner ring of the turntable is attached, and the bolts are the main fasteners. The outer ring is also connected to the platform using bolted connections. To ensure free rotation of the tower around the vertical axis on the rotary rings, a gearbox of the platform rotation mechanism is installed.
As for the design of the operator’s tower itself, it relates to welded elements and is attached to the turntable. The IMR-1 fencing engineering machine has two brackets. One of them is welded to the front wall of the tower, the other to the back. A hydraulic cylinder for raising and lowering the boom is attached to the front bracket. For fastening use a swivel type of connection. The rear bracket is used to secure the boom in the same way.
The operator’s tower itself is equipped with devices such as a meeting room, a sunroof, remote controls, a searchlight, as well as a seat. To create the maximum possible overview for the driver, the cabin has 6 windows.
Bulldozer equipment
In addition to the boom, the engineering barrage machine, the photo of which is presented in the article, also has a bulldozer part. In this case, the main purpose is the same as that of conventional equipment. In other words, it is used for loosening and transporting soil, clearing the terrain, felling trees, etc.
This equipment is divided into smaller parts. One of these elements is the central blade. This is a fully welded structure that attaches to the frame holder. In addition, the blade is able to rotate on the pivot pin left and right, but rather weakly, only 10 degrees to either side. The design of the wings is built on a similar principle.
It is worth noting that the IMR bulldozer equipment can operate in three positions. The first is called a double dump and when activated, the width is 3,560 mm. The second position is a bulldozer with a width of 4,150 mm. The latter is a grader position whose width is 3,395 mm.
Scraper and machine drive
Another important part of an engineering machine is the baking powder scraper. Everything is quite simple here and, except for two main elements, a scraper and a baking powder, this includes only the central part, represented by two beams. The mechanical part responsible for issuing the scraper is also important. It includes such small parts as the frame, rocker, crank, hydraulic cylinder and brackets. There is a special tip at the end of the frame. It is on him that the scraper-baking powder is put on. In this case, it is considered that he is in a transport position.
One of the most important parts is the hydraulic drive. It is used to transfer both turnout and bulldozer IMR equipment from transport to working position. In addition, the hydraulic actuator provides control of these elements during operation, ensures the normal operation of the mechanism responsible for the rotation of the tower. In other words, the hydraulic drive provides almost all possible movements of the heavy mechanical parts of an engineering machine.
The difference between IMR and IMR-2
It is worth mentioning that the IMR hydraulic drive has significant differences from the engineering IMR-2 barrage machine. This difference is as follows:
- 5 gear pumps of the NSh-46d type were installed at the IMR. Such a design in total reduces the total capacity of hydropower sources.
- WRI consumes less hydropower due to the fact that its design lacks five additional hydraulic cylinders.
- The performance of hydraulic filters is also reduced, since their number is equal to only two parts.
- In the hydraulic tank, the IMR does not have a temperature sensor, and there is no limiter for the working fluid.
- Safety valves of type BG-52-14 are usually installed on the machine, but at the same time they do not have a complete structural development.
It is worth noting that the amount of oil in the lubrication system of the engine of an engine of a firing engine of any type is always maintained at a very high level.
Machine Specifications
This machine has a number of specific specifications.
- An important parameter is the speed of arrangement of the passage in the forest and stone blockages. In this case, the speed is 300-400 m / h and 200-300 m / h, respectively.
- The speed when laying column tracks, for example, is much higher and amounts to 6-10 km / h.
- The operational performance of the machine during transportation of soil is 200-250 m 3 .
- Normal transport speed is 50 km / h.
- On dirt roads, the speed decreases by about half and ranges from 22 to 27 km / h.
- The mass of the barrage machine is 37.5 tons.
In addition to operational characteristics, it is worth noting that the usual calculation for such a technique consists of only two people.
The third model of IMR
In addition to IMR-1 and IMR-2, another model was created - the engineering IMR-3M barrage machine. The main difference from the previous two models is that in this case, the base of the T-90 tank, and not the T-55, was used as a base.
In addition to the strong differences in design, the tasks that are set in front of the machine are significantly different. IMR-3M is designed to ensure the advancement of military columns, and not for civilian use. She copes with clearing anti-tank minefields, and is also able to pave the way through them.
The weight of this machine is much more and is 50.8 tons, and the maximum speed at the same time is 60 km / h, but only on the highway. As for the engine, four-stroke multi-fuel V-84MS diesel engines are installed on it, the power of which is 840 liters. from.
A slight similarity with civilian models is that the IMR-3M has a bulldozer and a switch unit. However, the second type of equipment is additionally equipped with such a device as a URO - a universal working body or manipulator. The maximum boom reach and carrying capacity are also similar and are 8 meters and 2 tons, respectively.
Conclusion
To summarize the above, we can say the following. Firstly, the technical data of the machine is very different from the usual ones in that they are made on the basis of tanks. Secondly, the peculiarity lies in the fact that the IMR has both bulldozer and switch equipment. In addition, the engineering machine is distinguished from the general mass by an integrated mechanism of protection against radioactive substances, which greatly expands the possibilities of its operation.
It can be added that the tariff category of the driver-mechanic of the engineering truck is the third.