RU2465388C1 - HAMMER TAMPER BY KOLESNIKOV "MoltraK" - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: hammer tamper is designed to compact soil foundations by the impact method with a falling hammer for construction of buildings and structures. The tamper comprises a rotary lifting and lowering mechanism of a tamping hammer, a wheel chassis to install the specified mechanism, a tamping weight is arranged in the form of a hammer head. The hammer handle with its beginning is hingedly fixed to the specified mechanism. In process of tamping cycle the system centre of gravity does not reach beyond the support area contour.

EFFECT: reduction of cycle time, a weight will not swing, reduced weight of a mechanism, reduced overall height of a tamper at the same height of weight lifting, improved aiming of weight discharge.

2 dwg

Description

The invention relates to the construction, to the device of soil bases, and in particular to the device of artificial bases by compaction of natural or bulk soils by ramming with a falling hammer.

When arranging the bases with artificial sealing, there is a range of thicknesses of the sealing layer (1 ÷ 3 m, 3 ÷ 6 m with 2-layer sealing), which are advisable to seal with heavy rammers, dumped from a height.

With a smaller thickness of the sealing layer, vibratory rollers or rammers are applicable, and with a larger thickness it is applicable: either shock-rope drilling machines, or an explosive method.

When compaction heavy. rammers to raise the ramming height (and subsequent dumping) are widely used re-equipped dragline excavators. A ramming machine based on a caterpillar tractor was also developed (see: BSE. 1977, t.28, p.143, st.416), which can be mistaken for a prototype. In practice, this machine was useless (I have experience) and the tampering equipment was removed from the C-100 tractors. I do not dare to take dragline as a prototype (due to too much difference in mass-weight, and in its design, and in its dimensions, and in the uncontrolled and unobtrusive fall of ramming cargo). Other prototypes are not known to me.

The technical problem in compaction of soil from a surface is as follows: in the process of compaction from a surface, a compacted soil layer of a certain thickness is created on this surface, which prevents the thickness of the compaction from increasing. The thickness of the compacted layer corresponds to the energy of a single impact of tamper - to increase this thickness it is necessary to increase the energy of impacts. The increase in the number of strokes over 10-15 in one place does not lead to an increase in the thickness of the seal.

The aim of the invention are:

- technological efficiency;

- reduction of the mass-weight of the mechanism at times;

- reduction of the dimensions of the mechanism;

- transportability (including on a tow truck);

- increase productivity (and the machine, and the mechanism);

- as a result, a reduction in the timing and cost of compaction of the base.

The device consists of 2 blocks:

- block a) ram-swing rotary block of the tamper hammer;

- block b) 3- or 4-wheel chassis for placement of block "a)" on it.

Schematically, the hammer ramming is shown in figure 1, separately in figure 2 shows a ramming hammer.

Block a) consists of:

1. vertical mast with the ability to tilt to a transport position close to horizontal;

2. ramming hammer, pivotally on the horizontal axis fixed with the possibility of rotation near the mast 1 through the earrings;

3. the earring, in turn, is worn with its hole on the mast 1 and has a step-by-step turning mechanism at a given angle (not shown);

4. A cargo winch for lifting to the upper position (by a rope through the block at the top of the mast) of the hammer head (not shown conditionally).

Block b) consists of:

5. chassis frames with wheels;

6. forkopf for bucking or self-propelled mechanism (not shown conv.).

The implementation of the invention:

- a cargo winch with a cargo rope or chain (through the block at the top of the mast) the hammer head is brought to the upper position, gaining potential energy;

- the auto-lock of the freight cable is triggered - frees the head of the tamping hammer;

- under the influence of gravity, the head of the hammer moves downward along an arc of a circle, acquiring kinetic energy and vert. speed;

- the head of the hammer falls on the compacted soil, compacts the soil, completely loses speed and kin. energy

- with a freight winch, the auto-lock descends along the inclined slide to the place of the hook near the head of the hammer and a hook occurs;

- the head of the ramming hammer rises with a cargo winch, and the hammer's step-by-step rotation mechanism makes a turn-up by a given angular step.

Claims (1)

Hammer hammer ramming, consisting of a rotary lifting and dumping mechanism of the ram hammer and a wheeled chassis to accommodate the named mechanism, characterized in that the ramming load is made in the form of a hammer head, and the hammer handle is pivotally attached to the named mechanism at the same time during the cycle tampering the center of gravity of the system does not extend beyond the contour of the bearing area.

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