Device for turning work equipment excavator

 

(57) Abstract:

The invention relates to actuators of the working equipment hydraulic shovel excavators. Device for turning work equipment excavator contains mounted on a frame of the rotary column is rigidly connected with a coaxially mounted inside splined shaft, a bearing support which is fastened to the frame and the steering column. The steering column is made in the form of a high-torque rotary-planetary hydraulic motor, slotted hole of the rotor which is associated directly with the splined shaft. The housing of the hydraulic drive motor connected to the frame by means of a lever rigidly mounted on the housing, and a leash, pivotally connected with the lever and to the frame. Simplified design, improved reliability of the device. 3 Il.

The invention relates to actuators of the working equipment hydraulic shovel excavators and focus on improving the efficiency and reliability of the device and reducing its metal.

A device for rotation of the working body of the excavator-analoogiliselt, containing situated on the frame of the excavator povorotny is 2, 1986)

A disadvantage of the known device is the design complexity of a hydromechanical actuator, which leads to lower efficiency and reliability of the device.

The closest set of features to the claimed is a device for turning work equipment excavator, containing mounted on a frame of the rotary column is rigidly connected with a coaxially mounted inside splined shaft, a bearing support which is fastened to the frame and the steering column (see Berkman, I. L., Renew A. C., Reis, A. K. Universal shovel construction excavators. - M.: Higher school, 1981, S. 149, Fig. 148).

This unit is adopted for the prototype.

The disadvantage of the prototype is a hydro-mechanical drive turning, multilink character which leads to the inevitable loss of power in kinematic pairs, which leads to lower efficiency and reliability of the device and increasing its metal.

The essence of the invention lies in the fact that the device for rotation of the working equipment of the excavator, containing mounted on a frame of the rotary column is rigidly connected with a coaxially mounted inside the shaft, bearing rotary-planetary hydraulic motor, slotted hole of the rotor which is associated directly with the splined shaft and the housing of the hydraulic drive motor connected to the frame by means of a lever rigidly mounted on the housing, and a leash, pivotally connected with the lever and to the frame.

Declare a set of essential features allows to obtain the following technical result.

The implementation of the mechanism of rotation of the column in the form of a high-torque rotary-planetary hydraulic motor, slotted hole of the rotor which is associated directly with the splined shaft, provides a stepless transmission of torque from the hydraulic motor to the splined shaft, which reduces the power losses in the steering column and increases its efficiency. Achieved a significant simplification of the structure increases the reliability of the device as a whole and provides the reduction of metal.

The connection of the housing of the hydraulic drive motor to the frame of the excavator via a lever rigidly mounted on the housing, and a leash, pivotally connected with the lever and to the frame, provides a perception of the reactive torque arising during the operation of the hydraulic motor, compensates for the plane-parallel motion of the body of the latter, and provides unloading ora, General view of Fig.2 - section a-a in Fig.1; Fig.3 - view of B in Fig.1.

Device for rotation of the working body 1 excavator 2 contains fixed on the frame 3 of the rotary column 4, on which is hung the working equipment 1. Column 4 is rigidly connected with a coaxially mounted inside the splined shaft 5, bearings 6 which are fastened to the frame 3.

The steering column 4 is made in the form of a high-torque part-turn actuator rotary-planetary hydraulic motor 7, the slotted hole of the rotor 8 which mates directly with the splines of the shaft 5. The housing 9 of the hydraulic motor 7 is connected to the frame 3 by means of the lever 10, one end of which is rigidly connected with the housing 9, and a second hinge with a lever 11, pivoted on the frame 3.

The device operates as follows.

When the flow of working fluid into the cavity of the hydraulic drive motor 7 of the rotor 8 causes the rotation of the spline shaft 5 from column 4, moving the working equipment 1. The limitation of the angle of rotation and the reverse operating equipment 1 is carried out by the design of the hydraulic motor 7. Arising during the operation of the hydraulic motor 7 reactive torque is perceived kinematic chain case 9 - R is s excavators for driving the rotation of boom with working equipment and provides increased efficiency and reliability, as well as reducing the metal excavator.

Device for turning work equipment excavator, containing mounted on a frame of the rotary column is rigidly connected with a coaxially mounted inside splined shaft, a bearing support which is fastened to the frame and steering column, wherein the steering column is made in the form of a high-torque rotary-planetary hydraulic motor, slotted hole of the rotor which is associated directly with the splined shaft and the housing of the hydraulic drive motor connected to the frame by means of a lever rigidly mounted on the housing, and a leash, pivotally connected with the lever and to the frame.

 

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