SU1640303A1 - Working implement for excavating pits - Google Patents

Abstract

The invention relates to earthmoving machinery and is intended for extracts of ditches of variable width, mainly in frozen soils. The purpose of the invention is to increase productivity in the development of frozen soil. Working equipment includes a frame (P) 1 with a thrower 2. P 1 is made with a centrally located protrusion 4 in the upper part and a bottom plate. In the protrusion 4 and the foot plate, a finger milling cutter is installed - the central tool body with the drive 9. The side work bodies are made in the form of cutting chains 11 with horizontal asterisks and vertical support rollers and are placed on P 1. The cutting chains are rotated by P 1 and the corresponding lateral working body. Cleaning brushes are installed on P 1 with the ability to interact with the cutting chains 11. During operation, the working sides of the cutting chains 11 move and move the ground cut by them in the direction of the ground-receiving window of the thrower 2 The raw space between the cutting chains is blocked by the leading finger cutter. 1 hp f-ly, 6 sludge (L S

Description

Fm.1

The invention relates to earthmoving machinery and is intended for extracts of ditches of variable width, mainly in frozen soils.

The aim of the invention is to increase productivity in the development of frozen soil.

Figure 1 shows the working equipment with the installation of one chain organ with its maximum approaching to the frame {left while the machine is moving) and, conversely, with maximum withdrawal from the frame of another similar body (right), top view; figure 2 - section aa in figure 1; Fig. 3 is a view B in Fig. 1 (a chain working body showing all its kinematics); Fig. 4 shows a case arm of a chain working body from its rear side (relative to the direction of movement of the machine); figure 5 - section bb In Fig, 1; figure 6 - the bottom plate, top view.

The equipment includes a frame 1 suspended in front of the base machine (not shown). It is also possible variant of the rear suspension of this frame. On frame 1 there is a thrower (rotor) 2 with its drive 3. In addition, frame 1 carries a protrusion 4 centrally located in its upper part, and a bottom plate 5, in bearings of which drive shafts 6 of cutting chains with their driving mechanisms 7 are installed, and a finger mill 8 with its drive 9. On drive shafts 6 horizontally fixed sprockets 10, covered by cutting chains 11, simultaneously contacted and driven asterisks 12, fixed on vertical axes 13, set in (shifted by center distance to well no chains) bearing housing arrows

14, movably connected with leading shafts 6. In its lower part, the body booms 14 are equipped with cutting blades

15. In addition, the arrows 14 carry vertical rollers supporting the rear sides of the cutting chains 11. The rollers of a larger diameter (commensurate with the diameters of sprockets 10

and 12) in its function also supporting, mounted on the drive shafts 6 and axle x 13.

The configurations of the protrusion 4 and the bottom plate 5 are different from each other. The protrusion 4, on which the upper bearings of the shafts of the b and finger milling cutter 8 are placed, is a solid plate convenient for installation on some of all the specified drive mechanisms. The base plate 5 does not pass through all three centers of rotation of the drive shafts 6 and the finger milling cutter 8, but consists of three separate elements, each of which has its own lower support of the shafts 6 and the finger milling cutter 8. This is due to the need to rotate the chain operating elements in terms of and displacement in connection with this, their cutting knives 15 in a zone free from a fixed base plate 5. The front side of the rotary thrower fastened to the frame 1 is its ground receiving window, the side walls of which are the elements of the footplate 5 and the cleaning brushes 17 fixed to the frame 1 and interacting with the cutting part of the chains on their pile. The body booms 14 are connected to the lateral parts of the frame 1 by means of hydraulic cylinders 18.

Before working for fragments of a pit of a given width in the raised position of the frame 1, hydraulic cylinders 18 are diluted -14 in plan. However, the drivers do not move with sprockets 10 and their actuators 7 relative to frame 1. Their cleaning brushes 17, which interact with the cutting chain 11, do not move either. The three-element design of the lower foot plate 5 must ensure that the cutting knives 15 of both case arrows 14 pass between these elements. Then, when the base machine moves forward, it is provided (using not shown hydraulic cylinders) the lowering of the frame 1 and the penetration of the working bodies into the ground, which is combined with the simultaneous activation of all their driving mechanisms. In this case, the working sides of the cutting chains 11 must move and move the cut off of them in the direction of the ground-receiving window of the throwers 2.

The placement of the incisors on the cutting chains 11 is assumed to be the same as on the known chain bars from the conditions of preferential destruction of the soil by free and semi-free cutting. Since between the drive shafts b, and more precisely between their asterisks 10, the space uncultivated by the cutting chains 11 remains, it is opened by the work of the advance finger Mill 8.

In order to create a uniform flow of cut soil to the ground receiving window through the passages between the finger cutter 8 and each cutting chain, it is advisable to drive 9 with the inclusion of a torsional vibration puller transmitting angular displacements to one and then to the other side. It is also possible here to have a pair-wise representation of finger mills synchronously rotating and simultaneously diverting the ground cut off by them to the working parts of chains 11. In this case, the usual drive of their uniform rotation is quite suitable for finger mills. After the development of the soil by cutting chains 11 and a finger cutter 8, the crushed soil goes to the ground-receiving window of the throwers 2, after which it is thrown to the side.

Claims (2)

Claim 1. The working equipment for fragments of pits, including a frame with a thrower, an underfoot plate placed on the frame, central and lateral working bodies, and mechanisms of rotation of the lateral working bodies in the plan, associated with the frame and with the corresponding working body. h a0 five So that, in order to increase productivity in the development of frozen ground, the lateral working bodies are made in the form of cutting chains with horizontal asterisks and vertical support rollers, and the central working body is made in the form of a finger cutter, while the working equipment is provided with cleaning brushes mounted on the frame with the ability to interact with cutting chains. 2. Equipment pop.1, characterized in that the frame is made with a centrally located protrusion in the upper part, with the drive shafts of horizontal asterisks and a finger cutter installed in the foot plate and the protrusion. -Hix 14 C eleven Fke.5 Fig Fm.b