SU983187A1 - Apparatus for tamping-out pits - Google Patents

Description

(54) DEVICE FOR TRIMMING-KEYSLEDIED Idling of fires to buildings and can be used to twist the foundation pits for the erection of buildings and structures. It is known a device for breaking out foundation pits, consisting of a basic excavator machine, to the boom of which a trapezoidal shape tamper is attached, dropped to the point of tamping I. The closest to the invention is a ycipoftcTBO for pressing a boiler. pivotally connected sections, a stamp and a mechanism for lifting it in the form of a hydraulic cylinder with blocks of a polyspast system fixed on its stem and body, one of the ends of the rope of which is through It is uniform with gripping device 12. Ned retinas of known devices are low productivity, due to the significant effort required to extract the punch, as well as low reliability due to the significant loads transferred to the chassis of the base machine. The purpose of the invention is to increase productivity and reliability. The goal is achieved by the fact that a device for pulling out pits, containing a mast of articulated sections mounted on the chassis, a stamp and a mechanism for lifting it in water. hydraulic: cylinder with blocks of a polycigar system fixed on its stem and body; one of the ends of the rope is connected to the gripping device through the diverting units, equipped with an auxiliary hydraulic cylinder fixed to the chassis, the rod of which is connected to the other end of the rope, and the hydraulic mechanism of the lifting mechanism is equipped with a fixture for fixing stock positions. Fig, I shows the device; wines; in fig. 2 is a view A of FIG. 1-, and FIG. 3 - node I in FIG. I. The device consists of a base chassis I, for example, a KrAZ-257K brand car which has a mast 2 installed, consisting of two pivotally connected sections 3 and 4, installing the mast 2 in the operating and transport position; it is provided by means of hydraulic cylinders 5 that implement it rotation relative to the hinge suspension 6, as well as by means of the hydraulic cylinder 7 extending the frame 8, hinged to the lower frame 9 of the base chassis 1, for precision of pointing the stamp Yu to the point of tamping, the device is equipped with lateral hydraulic cylinders 11, providing and moving the mast 2 in the direction perpendicular to its longitudinal axis. During operation, the part of it, to which the mast 2 is attached, is supported by two hydraulic jacks 12. In the upper part of the mast 2, the head 13 with blocks is installed, and its lower part is supplied with a retractable support 14 providing perception of 2 loads transmitted to the mast. On the lower frame 9 of the base machine, there is a die lifting mechanism tO consisting of a hydraulic cylinder 15 equipped with a fixture for fixing the position of a bolt, for example, a hydraulic lock 16. At the ends of the rod and cylinder body 15, blocks 17 and 18 are covered, covered by a cable 19, one of the ends of which is fixed to the auxiliary hydraulic cylinder 2O, and the other through the diverting blocks 21 and the blocks of the head 13 attached to the gripping device 22 of the punch U, the gripping device 22 cxx; toe from the cross member 23, which also amp U 2 is mounted on the mast for longitudinal movement relative thereto. A hydraulic cylinder 24 is pivotally mounted on the cross-bar 23, the bolt of which is also pivotally attached to the swivel gripper 25 intended for suspending the punch U and disconnecting it for resetting from different heights. The device works as follows. Upon arrival at the place of work device. The property from the transport position (upper section 4 of mast 2 is folded and occupies a position close to horizontal) is transferred to the working position. The inclusion of hydraulic jacks 12 provides for an increase in the stability of the device. Then, using hydraulic cylinders 5, 7 and 11, mast 2 is installed strictly vertically above the tamping point of the excavation. At the same time, the retractable support 14 is actuated. By turning on the hydraulic cylinder 15, the punch U is raised to the desired height, and the hydraulic cylinder 24 of the gripping device 22 rotates the pick-up 25 and detaches it from the stem 10, resulting in a stamped pad is pressed into it, forming the element of the projected trench. Next, using the gkdrodilindra 13, the gripping device 22 is lowered to the die 10 and the hydraulic cylinder 24 is switched on to ensure that the die U is lifted to the desired height. Then, the cycle of dropping and lifting the punch U is repeated until the desired depth of cut is obtained. At a certain moment, such a situation may arise when the force developed by the hydraulic cylinder 15 will not be sufficient to extract the punch U from the excavated pit. In this case, using a hydraulic lock 16, they secure the rod of the hydraulic cylinder 15 and include an auxiliary hydraulic cylinder 2O, the rod of which is directly connected to the traction cable 19. Due to this force, the rod does not have a significant value even with small geometrical parameters of the cylinder 2O, provides fast and reliable separation of the stamp 10 from the walls of the pit. To ensure high performance of the device, hydraulic lifting cylinders of the stamp are used, as a rule, equipped with a multi-block polyspast system with a multiplicity of 8-1. This achieves a significant punch lifting speed and lifting height of the order of 10. However, the effort to lift the punch, and most importantly to remove it from the excavation, often several times the first, is insufficient even when using powerful hydraulic cylinders. After the punching U is removed, it is further lifted using the hydraulic cylinder 15 in the usual mode. After finishing the trenching of the excavation, the device moves to a new place to tread out the next one. The transfer of the device to the transport position after completion of the work is performed in the reverse order of its relocation to the working position.

The use of the invention makes it possible to significantly increase the productivity of making pits for foundations in the most difficult geological conditions. 5

Invention Formula.

A device for pulling out the trenches, containing a mantou mounted to the chassis from the harnessedly connected sections, a stamp and a lifting mechanism for it in the form of a hydro-cylinder with the polyspaste system blocks fixed on its stem and body,

which is connected via tap-off units

it is equipped with a fixed chassis auxiliary hydraulic cylinder, the rod of which is connected to the other end of the rope, and the hydraulic cylinder of the lifting mechanism is equipped with a fixed stem position. Sources of information taken into account in the examination,

1. Author's certificate of the USSR N 672287 ,. cl. E O2 D 3/046, 1977.

2.Information sheet No. 81-11 of the Bashkir Center for Scientific and Technical Information, sir. 18.13.01,

1981

FIG. five

View A 21

Claims (1)

A device for tamping pits, comprising a mast mounted on the chassis made of articulated sections, a stamp and its lifting mechanism in the form of a hydraulic cylinder with blocks of the emergency gear system mounted on its rod and body, one of the ends of the rope of which is connected to the gripping device via outlet fleas, characterized in that, in order to increase productivity and reliability, it is equipped with an auxiliary hydraulic cylinder fixed to the chassis, the rod of which is connected to another horse rope, and NDR of the lifting mechanism is equipped with a device for fixing the position of the rod.