SU1434043A1 - Excavator walking gear equipment - Google Patents

Description

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The invention relates to excavator undercarriage, namely to walking undercarriage equipment.

The purpose of the invention is to simplify the design and reduce the metal consumption.

Fig, 1 shows walking walking equipment, side view; FIG. 2 is a section A-A in FIG. 1; Figures 3 to 5 show the operation of the equipment when moving an excavator; Fig. 6 is a diagram of the hydraulic drive of the walking running equipment,

Walking skid equipment of the skavator includes hydraulic cylinders 1 lifting 5 auxiliary hydraulic cylinders / 5-35 additional hydraulic cylinders 4, placed in the rods 5 hydraulic cylinders 1 lifting and having rods 6, closed in the bottoms of 7 hydraulic cylinders 1 lifting; pump unit 8, check valve 9, unloading valve 10, valves 11-16; controls connecting the pump unit 8 to hydraulic cylinders 1 for lifting with additional hydraulic cylinders 4, auxiliary hydraulic cylinders, high pressure hydraulic accumulator 17 connected to the piston cavity II. hydraulic cylinders 1 for lifting low pressure accumulator 18 connected through distributors 15, 16 of control to piston and rod cavities of auxiliary hydraulic cylinders 2, 3j hydraulic locks 19-21, automatic

disconnector 22, connecting high pressure pump accumulators 17 of the right and left side equipment, valve 23, connecting pump installations 8 of the running equipment side, pipelines 24, support shoes 25, 26 with sliders 27, 28,

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the stem is displaced by the pressure of the liquid flow coming from the pump unit 8 to the additional hydraulic cylinder 4, the low pressure accumulator 18 through the control valves 15 (nos.f), 16 (no3.q) of control is connected to the piston and rod cavity of the auxiliary hydraulic cylinder 3, providing a floating position of the slider 28, while the auxiliary hydraulic arms levers 29,30, pivotally connected to the ends with the sliders 27 and 28 and fixed with the help of the hinge 31 on the excavator platform j the free end of the two shoulders 30 with the help of the hinge 32 connecting nen with draft type 33, the free end of a two-armed lever 29 with

using a hinge 34 connected to. The casing 50 of the rotsildr 2 is locked with a hydraulic lock 20. of the hydraulic cylinder 1 of the lift, thereby ensuring free axes 35, 36 placed on the housing of the hydraulic cylinder 1 of the lift. , 40 55 on the outer surface of the housing of the hydraulic cylinder 1 of the lift, is connected with the help of the ар hinge 41 to the rod 5, the hydraulic movement of the slide 28 along the support shoe 26 in the direction of movement of the excavator. During the lifting time of the excavator, it moves by an amount equal to one half of the pitch (Fig. 4), while the edge of the base 42 drags along the ground. Move for the rest of the

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lindra 1 lifting, base 42 of the excavator.

Walking equipment excavator works as follows.

When lowering the support shoes to the ground, the working fluid is supplied from the pumping unit 8 through the control valve 11 (pos., B), the hydraulic lock 19 to the additional hydraulic cylinder 4, the piston chamber P of the hydraulic cylinder 1 of the lift is filled at this time with liquid coming from the low pressure accumulator 18 via control valve 15 (no3, d). From the rod end of the W of the hydraulic cylinder 1 of the lifting fluid through the pipeline through the hydraulic lock 19, the distributors 11 (poses, b), 12 (poses, p), 13 (poses, p), 14 (poses, s) of the control goes to the drain. The rod 5 of the hydraulic cylinder 1 of the lift moves and moves the rod 33, which with its beams 37 and. 38 slides along the axles 39, 40 of the hydraulic cylinder 1 of the lift. The distance between the hinges 32 and 34 is reduced. The two shoulders levers 29, 30 pivot about the hinge 31, with the result that the support shoes 25 and 26 are lowered to the ground.

After touching the ground boots 25, the excavator begins to lift and move, while from the high-pressure accumulator 17, the fluid through the control valve 14 (poses a) through the pipeline pushes 5 into the cavity of the hydraulic lift 1, resulting from the weight of the excavator acting on rod 5 are balanced by forces from pressure

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fluids in cavity P, Further discharge of current 5

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the stem is displaced by the pressure of the liquid flow coming from the pump unit 8 to the additional hydraulic cylinder 4, the low pressure accumulator 18 through the control valves 15 (nos.f), 16 (no3.q) of control is connected to the piston and rod cavity of the auxiliary hydraulic cylinder 3, providing a floating position of the slider 28, while the auxiliary guide 50 Rocilddr 2 is locked with a hydraulic lock 20. This ensures a free 55

moving the slider 28 over the support shoe 26 in the direction of movement of the excavator. During the lifting time of the excavator, it moves by an amount equal to one half of the pitch (Fig. 4), while the edge of the base 42 drags along the ground. The movement for the remaining half of the step is performed by lowering the excavator.

The working fluid from the pump unit 8 through the distributor 11 (pos. A), the hydraulic lock 19 enters the rod cavity Ш of the hydraulic cylinder 1 of the lift. From the piston cavity II through the pipeline, through the control valve 14 (pos. A), the liquid enters the high-pressure accumulator 17; avenues. The low pressure battery 18 is connected via distributors 15 (pos.), 16 (pos. P) to the piston and rod section of the auxiliary hydraulic cylinder 2, ensuring the floating position of the slider 27, the auxiliary hydraulic cylinder 3 is locked with a hydraulic lock 21. Piston 5 of the hydraulic cylinder 1, the lift is pulled in, the distance between the hinges 32 and 34 increases, the levers 29, 30 rotate around the hinge 31, the slider 27 moves in the direction of movement of the excavator, and the excavator moves another half a step (Figure 4),

Then, the support shoes 25 and 26 are lifted due to the continued supply of fluid from the pumping unit 8 to the rod end W of the hydraulic cylinder 1 of the lift. From the piston cavity II, the fluid flows through the control valve 15 (pos, g) into the low pressure hydroaccumulator 18.

After lifting the support shoes 25 and 26 to a predetermined height above the ground, it occurs, they move to their original position. The working fluid from the pump-: installation 8 through the valves 11 (pos, s), 12 (pos, t) controls, the hydraulic lock 20 enters the rod cavity of the auxiliary hydraulic cylinder 2. From the piston cavity of this hydraulic cylinder, the liquid through the hydraulic lock 20, valves 12 (pos .sh), 13 (pos. p.), 14 (poses, s) controls go to the drain. Hydraulic cylinder 1 lift locked hydro

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lock 19, holding the disputed shoes 25, 26 above the ground surface. Then the support shoe 26 moves to the initial position. The working fluid from the pumping unit 8 through the check valve 9, the valves 11 (pos, s), 12 (pos. P.), 13 (pos, t) controls, the hydraulic lock 21 enters the rod cavity of the auxiliary the hydraulic cylinders 3, moving the support shoe 26 to the initial position, from the piston cavity of this hydraulic cylinder through the hydraulic lock 21, the distributors 13 (pos. t.), 14 (pos. s) of the control goes to the drain.

Fastening the undercarriage to the rotary platform of the excavator using one hinge and fastening the lift cylinder directly on the double-arm levers simplifies the metalwork of the turntable and the undercarriage equipment, reduces its intensity and cost.

Claims (1)

Invention Formula Stepping the escape equipment excavator comprising disposed on the sides of double-arm levers platform pivotally connected to the levers slides E plecha- support shoes connecting the slides and shoes auxiliary cylinder ,, lift cylinders, hydraulic cylinders control valves, pressure reservoir tori and pump units, wherein that, in order to simplify the design and reduce the metal consumption, each lifting hydraulic cylinder is designed with oppositely arranged guides and has a mounted In this case, the two arms of each side are pivotally connected to each other and the platform, and their free shoulders are connected to the body of the lifting hydraulic cylinder and the hinge linkage. 37 Sv // 7 / / Y //// ///////// Y / // // /// ////// / t3 fcg2 / ///////// 7/7 / U // /////// U ///// L Y // ////// // Jf 9U.Z.5 PU.S.S