RU2363817C2 - Trench rotor-type excavator - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: invention relates to mechanical engineering field and provided for trenching in melted soil of the I-IV category, and also in frozen grounds for engineering services, oil- and gas pipelines, drainage and can be used at contouring of foundation pis, taking out and at other works. Excavator trench rotor-type includes drive, rotor, control assembly 2 and moving mechanism. Rotor is implemented in the form of drum with tooth 14. Additionally in rotor drum it is fixed disk 6 for rotation to it transmission by means of steering circle 7, connected to rotation drive of rotor. Moving mechanism is implemented in the form of propulsive agent 8, including connected to steering circle 7 platform and three single-type double-sided hydraulic actuators, each of which contains fixed on platform casing 9 and piston 11 with rod 10, at both butts of which there are fixed hydraulic rams 12 with bearing thorned platforms 13. And drive includes pump-adjusting gear, connected by pipelines with tank 5 for working fluid and mentioned above hydraulic units. Additionally control assembly is located on platform or flooring 4 and allows manhole for entry into control assembly.

EFFECT: downsizing and productivity improvement.

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Description

The invention relates to the field of engineering and is intended for digging trenches in thawed and frozen soils under utilities, pipelines, drainage, and can also be used for contouring pits, excavations and other works.

The prototype of the claimed device is a "Trench Rotary Excavator" ETR - 307, developed by SCR "Gazstroymashina" in 1999, which is a self-propelled continuous diesel-electric earthmoving machine. It consists of a tractor and a working body. The tractor consists of two independent carts interconnected by a frame on which a power station is installed, which feeds the electric drives of the working body. Three independent rotors with a diameter of more than 5 meters are installed on the frame. The developed soil removal conveyor consists of two parts, horizontal and inclined oval. The total installed capacity of the excavator is 1200 hp. Travel speed from 0 to 200 m / h. Transport speed from 0 to 6 km / h. Dimensions: length 29 m, width 5.3 m, height 6.5 m. Weight 150 t.

The disadvantage of the prototype are gigantic: cost; energy intensity; dimensions; weight and low productivity.

The purpose of the invention is to eliminate the noted disadvantages. This is achieved by changing the installation design: dimensions and location of the rotor; ways of movement and rotation of the rotor; drive design, as well as a method of removing excavated soil from a trench by an excavator. (On one drive, the boom of which can be placed on a rotary excavator, at the same time, fix the excavator stand in the center of the unit with support on disk 6). Increased productivity will be ensured by a high rotor speed, a method of milling frozen soil instead of digging by reducing the width of the teeth and increasing their number, as well as a simple hydraulic running device containing the same type of unit, hydraulic motor modules, each of which contains a double-sided hydraulic cylinder, the body of which 9 is connected with a platform 8, at the ends of its rods 10 are mounted hydraulic lifts 12 with supporting platforms 13.

The trench rotary excavator contains a drive 1, a rotor 6 *, a control unit for a control valve 2, characterized in that it contains a hatch for entering the control unit 3 (Figs. 1 and 3), a platform for entering the control unit 4 (Figs. 1 and 2), the support frame of the control unit 5, drive 1 (Fig.1 3), containing a diesel engine, on the power take-off shaft of which a hydraulic pump is installed, connected by a pipeline to the working fluid capacity 1 *, a hydraulic distributor for seven spools connected to a rotary circle hydraulic motor 6 ** , three pairs of hydraulic lifts 12 hydraulic motors (Figs. 1 and 2) and three mechanisms for moving the hydraulic motor 9, 10, 11 (Fig. 2), on the upper plane of the turntable 7 (Figs. 1 and 2), a disk 6 (Figs. 1 and 2) is fixed (transmitting the rotation of the rotary circle 7 to the rotor 6 *), connected to the casing of the horizontal rotor 6 * (Fig. 1, 2, 3), armed with a cutting tool 14 (Fig. 1, 2, 3), the platform 8 (Fig. 1, 2) is connected to the bodies 9 double-sided hydraulic cylinders containing a piston 11 and rods 10 (FIGS. 1, 2), at the ends of the rods 10 hydraulic hoists 12 are fixed, the rods of which are connected by a supporting platform 13 (FIGS. 1, 2).

The invention is illustrated by drawings. Figure 1 is a front view of the installation, figure 2 is a side view, figure 3 is a top view.

An example of practical application. ETR is delivered to the place of work by trailer or by helicopter. Bringing the drive 1 into position and directing the working fluid to the hydraulic motor of the turntable 7 and the mechanisms of movement 9, 10, 11, the inventive device is ready for operation. Having directed the working fluid into the piston cavities of the rear (along the way) hydraulic lifts 12 to failure, the ETR will take an inclined position and begin to develop soil along an inclined plane to the depth of the design elevation, while the movement of the hydraulic motors takes place in two cycles, working and preparatory. Duty cycle - the movement of the installation occurs in the contact position of the support pads of the middle or extreme block modules of the hydraulic motor to the ground. At the moment of the beginning of the movement when relying on the middle support platform, the extreme block of the hydraulic engine modules with the raised support platforms 13, moving forward, perform a preparatory work cycle, which is completed before the end of the working cycle (movement) of the middle block of the hydraulic motor. The alternation of the operating cycles of the block modules is the essence of the operation of the hydraulic motor. When deepening to the design level, the rotation of the rotor and the operation of the hydraulic motor stops. Hydraulic hoists rise and under the action of the lower plane of the turntable, turning 90 °, lowering the middle support platform, begin to develop soil in the design direction. The excavator cleans the trench from the developed soil.

When arranging trenches in frozen ground for laying a pipe ⌀ 1420 mm, in order to increase the productivity of soil development, instead of a three-meter prototype rotor, it is advisable to reduce the rotor diameter of the proposed installation to 2 m.The device of pockets for mounting weights according to the described labor technology will not be. For the installation of trenches in thawed soils, it is possible to use a rotor in the form of an inverted truncated cone. For the construction of channels, it is possible to increase the height and width of the horizontal rotor! In rock formations, it is possible to build tunnels paired with a mine rock picker! The inventive device will find application in agriculture in the construction of silos, catchments and ponds for fish farming ...

Literature

Materials of the invention ETR-307, Design Bureau "Gazstroymashina" 99 g.

Claims (1)

A rotary trench excavator, including a drive, a rotor, a control unit, a moving mechanism, characterized in that the rotor is made in the form of a drum with teeth, while a disk is mounted in the rotor drum to transmit rotation to it by means of a turntable associated with the rotor rotation drive, and the mechanism The displacement is made in the form of a propulsion unit, including a platform connected to the turntable and three similar double-sided hydraulic cylinders, each of which contains a housing fixed to the platform and a piston with a rod, at both ends hydraulic rams which are fixed to the support spiny pads, and the actuator includes pump-regulating mechanism connected with conduits for the working fluid container and the above-mentioned hydraulic components, wherein the control unit is placed on a platform or deck and has a hatch to access the control unit.

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