SU313449A1 - ROPE MECHANISM OF THE EXCAVATOR - Google Patents

Description

Known rope working mechanism of the excavator, which includes a winch, ropes and hydraulic damping device.

The purpose of the invention is to obtain attainable regulated working forces. For this, on the rotary platform of the excavator, a hydraulic demounting device connected to the winch is installed by means of a rope and a lever. The latter is made in the form of a rod with a piston, placed in the cylinder, having safety, check and air valves. In addition, in the proposed mechanism, the piston rod may be made hollow, partially filled with compressed air or gas. The inner cavity of the rod is connected to one of the cavities of the cylinder on which adjustable throttles are installed. In this case, a tension device can be installed between the lever and one of the ropes.

FIG. I shows the rope working mechanism, a general view; in fig. 2 - the same, the rope hauling scheme; in fig. 3 - the same, longitudinal section but hydraulic damping, to it a device; in fig. 4 - sections along A-A and BB.

The excavator rope working mechanism includes a pressure winch 1, pressure ropes 2, return ropes 3, a lever 4, a hydraulic damping device 5 mounted on an excavator platform 6 of the excavator and connected to the winch by means of ropes and a lever.

Hydraulic damping device

Completed in a single stem 7 with a floating piston 8 placed in the cylinder 9, and mesyushom valves 10, 11 and 12, respectively, anti-safety, reverse and air. On the rod 7 is fixed piston 13. The device is equipped with a pressure gauge 14.

The working device of the device 5 (oil) completely fills the volume of the cylinder above the norse, 14 nods, as well as. part of the volume of the hollow rod under the piston 8.

Compensation for the difference in cylinder volumes above the piston 13 and below as it moves up and down is due to the internal cavity of the rod, the upper part of which is filled with air or gas. This part

rod serves as a pneumatic chamber. The internal cavity of the stem communicates with the upper cavity of the cylinder, a low pressure cavity.

Adjustable on the cylinder

throttles 15 p 16. There is a tension device 17 between the lever and the cable 3.

The rope working mechanism may include a bucket 18 for lifting the bucket 19 and hoisting ropes 20 passing through the blocks 21 and

Yopa can be performed according to the SCS Kciiiopnoro device with a perimeter inside the saddle for 1 h; part to

/: cino; i tiiajinnpiiG C, 1 Oala: si} y. Nanorios device ;; acl; o csm

at 24); (by an arm 25) or a leg of a strut, depending on the driver: otlol :: :( the general scheme of the working equipment; OCi :; ;; t

i: -:; - i. C-relz: may b: ..: 1 whole or sha)) iioii. Blocks 26 may deflect

io-ss; lgiey on the arm or on the arm of a koleichato-growl / chiogo equipment.

Kaiati; П1 ра6оч} 1Й excavator mechanics works in the following way.

11ag) about r; gadgets. The resulting Iri kosg 1 through the ropes on the bucket and i is connected to the damping net with the pressure under the 13 Iranian military clan closed. The pressure above the norshi; -m 13 is equal to the pressure in the Nnemash: chamber. Safety Clap is pulled off-; at a given pressure, and the oil (high pressure high pressure polos; ;; to the low pressure;) low / pressure. Porschen 13 is lowered. The air in the pneumatic chamber is compressed as the vein flows into the lower part of the hollow rod. The piston 8 rises. The pressure in the pneumatic chamber and the low pressure air increases.

Short-term external load corresponds to a short / period, during which it is safety; clan is open. The characteristic of the clap подб is selected so that its response time is less than a quarter of the period of fluctuation of the load. In this case, the limiting load demand in the mechanism will be limited to a given value.

The choke 15 is tuned so that the precautionary valve can work reliably and the demilitarized capacity of the device would be sufficient (acceptable dynamic system parameters). When the active loads in the ropes are reduced and become;; a blind to zero, and the rare1) Now the valve is closed, the pressure above the piston 13 folds does not exceed the pressure under this pressure. The non-return valve opens, the pressure code increases by this norse and, due to the number of times the active area of the piston areas is above and drops, it moves upwards. The oil is poured down into the high pressure cavity. At the end of the stroke, the pressure above and iodine is equal and staviovs rabbi

Air pressure is pneumatic chamber. If the damping device is used for a papristan mechanism, then the winch 1 and the return rope 3 participate in the shifting distance 13 upwards. This is eliminated

leveling of the ropes aspiring to the winch in the work of the excavator. The return of irrigation 13 to the upper position is carried out when the excavator is rotated and unloaded into the face, as well as when the bucket is primed

before copan: by whom.

Further, you know the next koiani cycle: the pressure under the piston 13 increases, the return clan-up closes, and, above all, it is repeated above.

P re d m ate and g

Claims (3)

1, Kapatny working mechanism of the excavator, including winch, ropes and hydraulic demagnetizing its device, characterized in that, in order to obtain optimal adjustable working forces, the rotary platform of the excavator was installed with a winch via a winch The lever is a hydraulic damping device, which is shaped as a rod with a porsche located in a cylinder, having fuse, return and air valves. 2. Mechanism but also. 1, from the heading HJ, and because the stem of the shaft is made hollow, partially filled with compressed air or gas, the inner cavity of the stem is connected with one of the cylinder cavities, and the adjustable droesles are installed. 3. Me: apiz: l under item 1, about tl and h and y and with iCM, that between the lever and one of the ropes there is a tensioning tension. . Pnebmati Esk numbers Cavity cavity / J High pressure cavity ig. 3 - -j-frijxvf PuZ - /