RU2393417C1 - Ploughshare-bulldozer of track-type armoured repair-evacuation machine - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: ploughshare-bulldozer of track-type armoured repair-evacuation machine (AREM) may be used as bulldozer for earthworks, as ploughshare when working with hoist to withdraw stuck military equipment and as outrigger in operation of weight-lifting crane. Ploughshare-bulldozer comprises earthboard with cutting knife in its lower part and rigid beam fixed on its back side, levers that hingedly connected earthboard to machine frame, and power hydraulic cylinders for lifting and lowering of earthboard. Rotary supports are arranged on sides of earthboard under rigid beam. Each rotary support includes support plate equipped with vertical stands and lugs. Rotary supports are fixed on rigid beam in transport position and are arranged with the possibility of rotation into a working position until support surfaces interact with ground. Rotary supports are equipped with fixation device in transport position and stopping device in working position.

EFFECT: invention provides for stability of track-type AREM when working on soft ground with weight-lifting crane and elimination of earthboard knife damage when working on stone ground.

4 cl, 4 dwg

Description

The invention relates to the field of military tracked vehicles, and in particular to a coulter-dozer of a tracked armored recovery and recovery vehicle (BREM), made, for example, on a tank chassis, and can be used as a bulldozer for excavation, as a coulter during operation a winch for pulling stuck military equipment and as an outrigger when operating a crane.

Known non-rotating dozer blade (see the book by D. I. Pleshkov and others. “Bulldozers, scrapers, graders.” - M .: Higher school, 1980, p. 136, Fig. 74), including a curved frontal sheet, fortified behind the top box and the bottom box, consisting of the back wall, bottom and diaphragm. The lower part of the blade is reinforced with ribs and equipped with knives. Such dumps can be used, for example, on universal hydraulic excavators used for earthworks of small volumes in weak and medium soils (see I. Gomozov’s book “Track, road and construction machines.” - M.: Literature on construction, 1970, p. 214). The excavator is made on the base tractor, on the frame of which a bulldozer blade is installed in the front part, and a bucket excavator is mounted in the aft part. A bulldozer blade is used when planning the surface of the soil, and when working with an excavator bucket - as a front outrigger (outrigger hereinafter).

A disadvantage of the known dozer blade is its low carrying capacity when used as an outrigger.

Known opener-bulldozer armored repair and recovery vehicle (BREM) (see Operating Instructions 608 IE-2E. "Armored repair and recovery vehicle BREM-1", insert 9, Fig. 52, the extraction of which is attached to the materials of this application. The publication is a replicated documentation of the BREM-1 state unitary enterprise "Ural Design Bureau of Transport Engineering", Nizhny Tagil, attached to the BREM-1 product for delivery to the consumer). BREM is made on the base chassis of the tank, equipped with a hydraulic crane with a remote boom and two hydraulic winches - the main and auxiliary. The coulter-dozer is mounted on the nose of the body and contains a blade, on the back side of which a stiffening beam is fixed in the form of a hollow prism with ribs, a knife is installed in the lower part of the blade, two levers pivotally connecting the blade to the machine body, and power hydraulic cylinders for lifting, lowering and fixing the blade in the required position. The coulter-bulldozer can be used when performing earthworks, for example, for self-digging. When using the main winch to pull out stuck equipment, the coulter-bulldozer is buried in the ground to lock the machine. A crane is used to lift loads, for example to remove a tank tower or propulsion system. In this case, the coulter-bulldozer rests on the ground and performs the function of an outrigger.

However, the known coulter-bulldozer has a significant drawback, which is predetermined by the following.

In connection with the constant increase in the mass and dimensions of new armored vehicles and, accordingly, structural elements that are removed and replaced during repair, for example a tower, it is necessary to increase the crane's lifting capacity and the outreach of its boom. At the same time, the construction of the coulter-bulldozer, the supporting surface of the blade of which, when used as an outrigger, is insignificant, leads to its burying when working on soft soils, which does not provide the necessary stability of the BREM, requires laying base plates under the blade and constant monitoring of the housing position. When working on rocky soils, a knife may break or bend.

The present invention solves the problem of creating a coulter-dozer tracked ARV with increased operational capabilities.

The technical result achieved by the invention is to ensure the stability of the tracked AREM when working on soft soils with a crane and to prevent damage to the blade knife when working on rocky soils.

This problem is solved by the fact that in the coulter-bulldozer of a tracked armored repair and recovery vehicle containing a blade with a cutting knife in the lower part and a stiffening beam fixed on its rear side, levers pivotally linking the blade from the machine body, and power hydraulic cylinders for raising and lowering of the blade according to the invention, on the sides of the blade under the stiffening beam, rotary supports are installed, including each base plate equipped with vertical posts and eyes, mounted on the stiffness beam in the transport floor It is possible to turn it into the working position until the supporting surfaces of the plates interact with the soil, while the rotary supports are equipped with a locking device in the transport position and a locking device in the working position.

The most complete technical result is achieved if:

- the device for securing the rotary support in the transport position includes upper stops made on the rear wall of the stiffener beam with the possibility of interaction with the upper ends of the vertical struts, and mounting bolts that fix the base plate and vertical racks on the stiffener;

- to lock the rotary support in the working position, the coulter-bulldozer is equipped with lower stops rigidly fixed on the inner side of the blade blade to allow interaction with the front edge of the base plate, and supporting brackets rigidly fixed on the lower wall of the stiffener, and the locking device is made in the form screw ties pivotally connected to the eyes of the base plates with the lower side and with the eyes of the brackets the upper side, while the vertical pillars of the support in its working position are pressed against the schadkam on the support brackets and fixed to the support bracket mounting bolts;

- the thread of the screw elements of the couplers is unloaded from the vertical forces arising from soil deformations under the base plates from work loads, due to the holes made under the mounting axis in the form of longitudinal grooves, providing free running of the couplers on the axes.

Analysis of the distinctive features of the construction of the coulter-bulldozer tracked ARVS showed that:

- installation on the sides of the blade under the stiffness beam of rotary supports, including each base plate, equipped with vertical struts and eyes, mounted on the stiffness beam in the transport position and made with the possibility of turning into the working position before the interaction of the supporting surfaces of the plates with the ground, supplying the rotary supports with a locking device in the working position they allow to increase the area of contact of the coulter-bulldozer with soil by the value of the area of the base plates when using it as an outre EPA at a crane operation and thereby eliminate the burying coulter bulldozer into the ground and thus provide the required stability ARV, and eliminate breakage and bending of the knife during operation on stony ground;

- the inclusion in the device for securing the rotary support in the transport position of the upper stops made on the rear wall of the stiffener with the possibility of interaction with the upper ends of the vertical struts, and mounting bolts that fix the base plate and vertical racks on the stiffener, provides reliable fastening of the rotary supports and allows place them in such a way that they do not interfere with the work of the blade during excavation work and the use of the blade as an opener;

- supplying the locking device of the rotary support of the coulter-bulldozer in the working position with the lower stops rigidly fixed on the inner side of the blade knife with the possibility of interaction with the front edge of the base plate, and supporting brackets rigidly fixed on the lower wall of the stiffener beam, the locking device in the form of a screw screeds pivotally connected to the eyes of the base plates with the lower side and with the eyes of the brackets with the upper side, preloading the vertical struts of the support in its working position to sites on the support brackets and fixing on the support brackets with fixing bolts ensure simplicity of design and reliable locking;

- making holes in the forks of the couplers under the axis of attachment in the form of longitudinal grooves provides free movement of the forks on the axes during soil deformation under the base plates from working loads and thereby eliminates the destruction of the couplers, and also allows the installation of rotary supports in the transport position without changing the length of the couplers .

The invention is illustrated by drawings, which show:

figure 1 is a General view of the BREM with the coulter-bulldozer in working position and a hydraulic crane;

figure 2 is a side view of the coulter-bulldozer;

figure 3 is an enlarged side view of the blade and locking device (the transport position of the pivot bearing is shown by the dot-dash line), element A in figure 2;

- figure 4 is a rear view of the coulter-bulldozer, view B in figure 2.

The coulter-bulldozer of the tracked BREM (see Figs. 1-3), which is shown made on the tank chassis, contains a blade 1, levers 2, pivotally linking the blade 1 to the body 3 of the machine, power hydraulic cylinders 4, designed to raise, lower and hold the opener - a bulldozer in the required position and rotary bearings 5 mounted on the left and right sides of the blade 1.

On the rear side of the blade 1, a stiffener 6 is fixed in the form of a hollow prism with internal stiffening ribs (not shown) and a knife 7 is installed in the lower part of the blade 1. On the rear wall of the stiffener 6, levers 2 are rigidly fixed.

Each pivot bearing 5, mounted under the stiffener 6, includes a base plate 8 made of a rectangular shape, reinforced with ribs 9 for rigidity, equipped with vertical posts 10 and eyelets 11, mounted at the rear edge of the base plate 8. The pivot bearings 5 can occupy two positions: transport and work.

In the transport position, the swivel bearings 5 are deployed in the upper position so as not to impede the operation of the blade 1 during excavation work (as a bulldozer) and during operation of the main winch (as a coulter).

The device for securing the rotary support in the transport position includes upper stops 12 made on the rear wall of the stiffener 6 with the possibility of interaction with the upper ends of the vertical struts 10, and mounting bolts 13 and 14, fixing the base plate 8 and vertical racks 10 on the stiffener 6.

To lock the rotary support 5 in the working position, the coulter-bulldozer is equipped with lower stops 15, rigidly fixed on the inner side of the blade 7 of the blade 1 with the possibility of interaction with the front edge of the base plate 8, and supporting brackets 16 (see figure 4), rigidly fixed on the lower wall of the stiffener 6. The locking device is made in the form of screw ties 17, pivotally connected to the eyes 11 of the base plates with the lower side and with the eyes of the brackets 16 on the upper side. The vertical struts 10 of the support 5 in its working position are pressed to the platforms "a" on the support brackets 16 and are fixed on the support brackets 16 by fixing bolts 13.

To ensure the pivot of the supports from the working position to the transport position without changing the length of the screeds 17, as well as to eliminate their breakdowns when the soil is deformed under the base plates 8 from the working load, the holes in their forks under the mounting axis 18 and 19 are made in the form of longitudinal grooves “b” to enable longitudinal movement of the forks on the specified axes and unloading the threads of the screw elements of the couplers from vertical forces.

When working with a crane, the coulter-bulldozer is used as an outrigger to ensure the stability of the BREM. Before starting work, the rotary supports 5 are transferred from the transport position to the working one. To do this, the mounting bolts 13 and 14 are turned out, the base plates 8 on the screeds 17 are turned until the front edge of the base plate 8 contacts the lower stop 15 and the upper ends of the vertical posts 10 come in contact with the supporting surface “a” of the brackets 16, after which the locking bolts are fixed 13 and the tightening of the base plates 8 by means of ties 17. After that, using the power hydraulic cylinders 4, the coulter-bulldozer is lowered down, the base plates 8 abut against the ground and, as outriggers, provide the required position of the housing 3 and the stability of the BREM.

After the work is completed with a crane, the coulter-bulldozer is lifted using power hydraulic cylinders 4, the rotary bearings 5 on the couplers 17 are turned until the base plates 8 come in contact with the upper stops 12, after which the bolts 13 and 14 are turned on.

Thus, the present invention solved the problem of creating a coulter-dozer BREM with increased operational capabilities.

Claims (4)

1. The coulter-bulldozer of a tracked armored recovery and recovery vehicle, comprising a blade with a cutting knife in the lower part and a stiffening beam fixed to its rear side, levers pivotally connecting the blade to the machine body, and power hydraulic cylinders for raising and lowering the blade, characterized in that that swivel bearings are installed on the sides of the blade under the stiffening beam, each of which includes a base plate equipped with vertical struts and eyes, fixed to the stiffness beam in the transport position and made with by turning to the working position before the interaction of the supporting surfaces of the plates with the soil, while the rotary supports are equipped with a locking device in the transport position and a locking device in the working position. 2. The coulter-bulldozer according to claim 1, characterized in that the device for securing the rotary support in the transport position includes upper stops made on the rear wall of the stiffening beam with the possibility of interaction with the upper ends of the vertical struts, and mounting bolts that fix the base plate and vertical racks on a stiffness beam. 3. The coulter-bulldozer according to claim 1, characterized in that for locking the rotary support in the working position, the coulter-bulldozer is equipped with lower stops rigidly fixed on the inner side of the blade blade, allowing interaction with the front edge of the base plate, and supporting brackets, rigidly fixed on the lower wall of the stiffener beam, and the locking device is made in the form of screw ties, pivotally connected to the eyes of the base plates with the lower side and with the bracket eyes of the upper side, while vertical Menus support in its operative position pressed against pads on the support brackets and fixed to the support bracket mounting bolts. 4. The coulter-bulldozer according to claim 3, characterized in that the thread of the screw elements of the screeds is unloaded from the vertical forces arising from soil deformations under the base plates from work loads by making holes under the mounting axis in the form of longitudinal grooves that allow the screeds to move freely on axes.

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