RU2322046C1 - Rotator of manipulator logger - Google Patents

Abstract

FIELD: timber industry.

SUBSTANCE: rotator includes housing hinge-mounted on manipulator and consisting of two spaces. Upper space is made in form of reciprocating hydraulic cylinder. Rod of hydraulic cylinder is made in middle part length wise in form of threaded screw engaging with nut. Guides for rod are made in lower cover of lower space. Means for fastening of working member and fastening to hydraulic manipulator are mounted on upper cover of housing and of rod of hydraulic cylinder lower than lower cover. Rod of hydraulic cylinder consists of two parts interconnected by rotary-axial joint located higher than threaded part. Nut is rigidly secured in partition rigidly fitted in lower space. Seal for rod is installed in partition between upper and lower spaces. Inlet-outlet of hydraulic liquid into upper space are made, one over piston, and the other, under piston. Housing of rotator is split.

EFFECT: increased reliability of rotator, facilitated mounting and demounting.

2 cl, 2 dwg

Description

The invention relates to technological equipment of forestry machines, namely, to the communication node of the working body with the manipulator of the forestry machine, and can be used in the forest industry and forestry.

Known rotator manipulator logging machine, comprising a housing on which a single-blade torque hydraulic cylinder is mounted, the shaft of which is connected to the manipulator (Alexandrov V.A., Shol NR Design and calculation of machines and equipment for logging operations and lower warehouses. Textbook. - Ukhta : USTU, 2003. - 244 p., See p. 133, 13 ... 16 lines from the top, and Fig. 51 on p. 133).

Known rotator manipulator logging machine has a relatively complex design and the angle of rotation around the vertical axis of the working body is less than 360 ° (2 P).

Also known is the rotator of a manipulator logging machine, comprising a housing pivotally mounted on a manipulator and consisting of two cavities, the upper of which is made in the form of a reciprocating hydraulic cylinder, the rod of which is made in its middle part, in length, in the form of a threaded screw, entering into engagement with a nut rigidly fixed in the partition between the upper and lower cavities, guides for the rod are made in the lower cover of the lower cavity, the inlet-outlet of the hydraulic fluid is made one in an extra cavity, and the other in the lower one, the working body is fixed on the rod below the lower cover (Z. Emtyl. Improving the kinematics, dynamics and design of timber industrial hydraulic manipulators. Abstract of the dissertation ... Dr. of Technical Sciences: 05.21.01. / Z .K. Emtyl. - Voronezh, VGLTA, 2002. - 36 p. See Fig. 2 on page 10).

However, the known rotator of the manipulator logging machine has a rigid connection of the piston with the rod and the threaded screw, which causes a complex movement of the piston (reciprocating and rotational) and its increased wear, it is difficult for the working fluid to enter the piston cavity and drain from it.

To eliminate the noted drawbacks in the proposed design of the rotator of a manipulator logging machine, including a housing pivotally mounted on the manipulator and consisting of two cavities, the upper of which is made in the form of a reciprocating hydraulic cylinder, the rod of which is made in its middle part, in length, in in the form of a threaded screw engaged with the nut, and guides for the rod are made in the lower cover of the lower cavity, while the hydraulic cylinder on the upper housing cover and on the rod , below the lower cover, means for fastening the working body and fastening to the hydraulic manipulator are mounted, according to the invention, the stem is made of two parts interconnected by a rotary-axial connection located above the threaded part, the nut is rigidly fixed in the partition mounted rigidly in the lower cavity, and a seal for the rod is installed in the partition between the upper and lower cavities, and the inlet-outlet of the hydraulic fluid is made in the upper cavity: one above the piston and the other under the piston. In addition, the housing is detachable.

This design of the rotator of the manipulator logging machine eliminates the rotation of the piston in the housing, facilitates the supply and removal of hydraulic fluid, facilitates mounting and dismounting of the rotator and increases the reliability of its operation.

Figure 1 shows the rotator manipulator logging machine, a General view, a schematic section; figure 2 - the same rotational-axial connection of the rod.

The rotator of the logger manipulator includes a housing 1, which inside consists of two cavities A and B.

Cavity A is a reciprocating hydraulic cylinder, the piston 2 of which is connected to the stem 3 and provided with a seal 4, for sealing the piston 2 in the housing 5 of the cavity A. In the bottom cover 6 of the cavity A (housing 5), a stuffing box 7 is installed for sealing the stem 3, and on the top cover 8, a bracket 9 is rigidly fixed for connecting the housing 1 to the hydraulic manipulator of the machine (not shown).

Cavity A is equipped with an inlet-outlet 10 and 11 of the hydraulic fluid in the over-piston and rod spaces. The housing of the cavity 5, consisting of two halves 12 and 13, between which a partition 14 with a nut 15 is rigidly fixed in it, is rigidly removably attached to the bottom cover 6.

The rod 3 inside the half 12 is connected to its screw part 16 by a rotary-axial connection (figure 2) using a spring ring 17 of a rectangular profile. Below the screw part 16, the rod 3 has a cylindrical section and passes through the guides 18 through the cover 19, outside of which is equipped with a device 20 for connecting it to the working body of the machine (not shown).

The rotator can be connected to the manipulator device 20, and with the working body through the bracket 9.

The screw part 16 of the rod 3 and the nut 15 are made with a persistent thread of a rectangular profile.

Parts 5, 12, 13, 14 and 19 of the housing 1 are rigidly connected to each other, but have an easily disassembled structure, for example a bolt (flange) connection or threaded with internal and external threads.

The rotator manipulator harvesting machine operates as follows.

The operator, controlling the rotator, delivers the hydraulic fluid through the inlet 10, the piston 2 under the pressure of the liquid lowers with the rod 3 down and pushes its screw part 16, which, being in mesh with the nut 15, starts to rotate around its longitudinal axis and rotate the working body (not shown). The rotation will be carried out clockwise or counterclockwise, depending on the thread (right or left). From under the piston 2, the hydraulic fluid will be discharged through the outlet 11. Turning the working body to the desired angle, the operator puts the piston 2 in the "locked" position and the load is held on the piston 2 and the threaded nut 15 and the screw part 16 of the rod 3. When applying hydraulic fluid to the inlet 11 and the outlet through the outlet 10, the piston 2 will move up, and turn the working body in the other direction. When the working body is turned away from the object of labor, the piston 2 is put by the operator in the "floating" position. The maximum angle of rotation of the working body depends on the thread pitch, the length of the screw part 16 of the rod 3 and the magnitude of the piston stroke 2.

The proposed design of the rotator of the manipulator forestry machine allows its upper part (cavity A to use a standard hydraulic cylinder, excludes piston rotation, facilitates assembly-disassembly, maintenance of the rotator and inlet-outlet of hydraulic fluid).

Claims (2)

1. The rotator of the manipulator logging machine, comprising a housing pivotally mounted on the manipulator and consisting of two cavities, the upper of which is made in the form of a reciprocating hydraulic cylinder, the rod of which is made in its middle part, in length, in the form of a threaded screw engaged with the nut, and in the lower cover of the lower cavity, guides for the rod are made, while on the upper cover of the housing and on the hydraulic cylinder rod, below the lower cover, means are mounted for fastening the worker organ and attachment to the hydraulic manipulator, characterized in that the stem is made of two parts interconnected by a rotational-axial connection located above the threaded part, the nut is rigidly fixed in the partition installed rigidly in the lower cavity, and installed in the partition between the upper and lower cavities a seal for the rod, and the inlet-outlet of the hydraulic fluid is made in the upper cavity: one is above the piston, and the other is under the piston. 2. The rotator according to claim 1, characterized in that the housing is detachable.

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