SE421201B - LINEN GOVERNMENT PREFERRED FOR LINOR CLEANING - Google Patents

Description

17901514-5 10 15 20 25 30 2. 91 and 92, each end of which is supported in suitable layers. 94, 95 and 96 mounted thereon, so that it will rotate with associated roller, the sprocket pairs 93 and 95, 94 and 96 each being joined to an endless, non-Each shaft has a sprocket 93, shown chain. The shafts are supported in plates 97, 98 (see Fig. 3), which are slidably mounted inside the housing and attached to a transverse plate 99, which is attached to the outer end of a piston rod 100 of a hydraulic piston and cylinder assembly 101, which protrudes from the bottom of the house. The plate 99 is provided at each end with blocks 102 and 103. The block 102 is slidably mounted in a guide recess 104 in a partition wall 105 inside the housing, while the block los slides in a groove los in an outer wall of the housing. The ends of the shafts 89 and 90 are provided with worm wheels 107, 108, each of which engages a section of a rack 109, which is rotatably mounted on one side of the housing and is driven by a hydraulic motor 110. One section 109a of the rack is longer than its other section 109b, so that regardless of the position of the shaft 90, the worm wheel 107 will remain engaged with the rack. The thread of section 109b is opposite to the thread of section 109a so that the grooved line engaging portions 85 and 87 rotate in opposite directions relative to the grooved line engaging portions 86 and 88. During operation, the hydraulic piston and the cylinder assembly 101 for moving the line engaging portions 86 and 88 away from the portions 85 and 87 and the device positioned by inserting the rope through the opening 82. The piston and cylinder assembly 101 is then inverted so that the rope is clamped between the portions 85 and 86 and 87 and 88, respectively, are then moved to move the device along the line.

In another embodiment, not shown in the drawings, the hydraulic motor maneuvering is a worm gear centrally mounted for rotation about a substantially horizontal axis in a box-like housing, which is preferably formed in two halves, which are 10 15 25 30 7901514-5 3 adapted to be screwed together or fastened together in another way. relative to the thread at the other end of the worm gear. One end of the worm gear is directly connected to a hydraulic motor with variable speed, which motor is located. Four shafts are located in the housing. The thread at one end of the worm gear is directed opposite at one end of the housing. so that they are substantially vertical and pass through the openings in the upper surface of the housing. Each shaft is supported in suitable, displaceable bearings and is provided with a gear, which engages the worm gear. The upper end of each of the four axles passes through a curved slot in a pressure plate, which is rotatably mounted on the upper surface of the housing for rotation about a substantially vertical axis and is provided with a grooved wheel, which is adapted to engage a rope which passes between each of the pair of shafts substantially perpendicular to the shaft of the worm gear.

The pressure plate is connected to a hydraulic cylinder, so that it can be rotated in opposite directions, so that the wheels are moved towards and away from the line. Preferably, the pressure side of the cylinder piston is provided with a non-return valve to keep the piston in the line engaging position.

To remove the line, hydraulic fluid is supplied to the opposite side of the piston until the pressure acting on it is sufficient to overcome the action of the non-return valve. This allows the traction unit to be lowered slowly from a raised position if desired.

The terms "horizontal" and "vertical" have been used above only to describe the relative positions of the various components, and it will be appreciated that in use the positions of such components will vary with respect to the working position of the traction unit.

Claims (6)

A "79o1s14-5 10 15 20 825 30 1. A patent unit, characterized in that at least a pair of line engaging parts (85, 86, 87, 88) and a hydraulic motor (110), which are drivably coupled to said parts for rotating one part in a direction and the other part in the opposite direction, and a means (101) for bringing the parts into and out of engagement with a rope (83). IN An assembly according to claim 1, wherein one of the line engaging members (85, 87) is fixedly indicated, arranged that the other line engaging member (86, 88) is mounted on a carriage (99), and that the means for bringing the parts into and out of engagement with the rope (83) comprises a screw or a hydraulic piston and cylinder assembly (101), which is connected to the carriage. 3. An assembly according to claim 1 or 2, characterized in that each of the line engaging members (85, 86, 87, 88) is supported in a groove from a set of curved grooves in a pressure plate, so rotating the plate for the parts in and out of engagement with the rope (83). 4. A unit according to claim 3, characterized in that the plate is rotatable by means of a hydraulic cylinder. A unit according to claim 4, wherein the pressure side of the piston of the cylinder is provided with a non-return valve for holding the piston in the line of the line (83) obtained characterized engaging position and removal by supplying hydraulic fluid to the opposite side of the piston until the pressure acting on it is sufficient to overcome the action of the non-return valve. Unit according to one of the preceding claims, characterized in that the line engaging parts (85, 86, 87, 88) are driven by means of snow wheels connected thereto in a worm gear which is driven by a hydraulic motor. MENTIONED PUBLICATIONS: