DE1207204B - Continuous grinder - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

Number:
File number:
Registration date:
Display day:

D21b

German class: 55 a - 1/10

M 54890 VH b / 55 a
November 21, 1962
December 16, 1965

The invention relates to a continuous grinder for wooden billets in a vertical shaft down between driver chains and pressed against a grindstone, the Driver chains and their drives are mounted adjustable in height.

In known continuous grinders there are disadvantages that extensive and expensive gear mechanisms are required, both to drive the press chains and for the adjusting device for raising and lowering the chain frames as they wear out and when changing the grindstone. Because of the common Chain drive with known types of construction, the chain frames must be rigidly connected to each other, is no change in the shaft width and no - in relation to the vertical central axis - asymmetrical loading of the grindstone possible. The latter, however, is used to manufacture one A good grinding product is desirable because of the angle between the horizontal and the grindstone tangent should be as small as possible at the point of contact, reducing the risk that the grindstone will be left with billets pushes through under the lower edge of the shaft wall, is significantly reduced.

The known devices for raising and lowering the chain frames consist of at least four vertical spindles, from the associated spindle nuts designed as worm gears and from a drive that ensures their synchronization. The disadvantage here besides the complexity is and the accessibility disruptive arrangement especially the fact that the weight of the filled Conveying shaft must constantly be carried by threads.

A continuous grinder which overcomes the disadvantages mentioned is characterized according to the invention by means of two scaffolds, each of which accommodates two chains and their drive, which are connected via hydraulic Support the presses on two U-shaped frames, which are placed on one of the grindstones And are adjustable against each other.

The hydraulically operated parallel presses enable quick and precise vertical adjustment of the two chain structures, also independently of each other. In addition, spindles secure the Pressing scaffolding brought to a certain height. Each chain frame has two pillars that of pipe anchors parallel to the shaft of the grindstone are penetrated and are connected to one another, with cross-continuous grinder on the outside of the pipe anchors

Applicant:

MIAG mill construction and industry G. m. B. H.,

Braunschweig, Ernst-Amme-Str. 19th

Named as inventor:

Curt Meinecke, Braunschweig

attack binders, which brace the set scaffolding against each other and to change the Manhole width are solvable. Each frame is guided vertically in at least three places, two of which lie on the inside of the U-frame and the third by the one firmly anchored to the frame hydraulic press or by on a part of the building, for example in the breakthrough of a Floor ceiling arranged angle profiles is given, however, taking into account the transverse adjustability the chain framework.

If hydraulically operated ratchet mechanisms are used to drive the press chains, this is sufficient for them Adjusting devices and a central pressure medium unit for the chain drive.

All frame and scaffolding parts can be built in self-supporting, welded box construction. This design with two-sided adjustability of each chain frame results in a simple, easy to easy to use and very adaptable device. The invention is based on an embodiment that is shown in the drawing, in the following explained in more detail, thereby shows

F i g. 1 a continuous grinder with broken chain frames, the left half of the drawing a vertical section according to the designation I-I of FIG. 3 and the right side of the figure is a side view showed according to arrow Z of Fig. 3,

F i g. 2 shows a view according to arrow Y in FIG. 1; Fig. 3 shows a horizontal cross-section according to arrows II-II of Figs. 1 and _;

F i g. 4 shows a diagrammatic representation of half of a chain frame broken off at the top.

The continuous grinder consists of the main parts platform 1 with grindstone 2, two frames 3 with hydraulic ones Presses 4 and two identical stands 5 each with two press chains 6..

The pedestal 1 is a top and bottom with flanges provided ribbed box, in which, in the graphic representation, the device for Replacing the grindstone of the clear;, keit wegeff, is not shown. The grindstone 2 is

■ 509 758/15

Claims (5)

mounted on a shaft 21 which runs in the two bearings 22 set up separately next to the pedestal 1. The U-shaped frames 3 are fastened to the pedestal on both sides of the grindstone 2 by means of screws 31 in such a way that their distance from the vertical center plane 8 passing through the shaft axis 21 can be adjusted. Since both frames 3 can be adjusted independently of one another; For a given shaft width, the distance between the right frame 3 and the mortar plane 8 can be greater than the distance between the left frame 3, with the result that the angle 9 between the horizontal and the tangent to the grindstone 2 at the point of contact is as small as possible which - for technological reasons - can be desirable. The frame 3 can be guided on the pedestal and moved against it by known means, but this is not shown for reasons of clarity. Each of the frames 3 carries a .hydraulische press 4, which is attached to the crossbeam of the frame, while a stand spindle 32 is used on each of the two end beams. .. "" .., - '.. · The chain frame 5 (cf. also' F i g. 4) "consists essentially of the U-shaped base part 51, on the legs 51 'of which the pillars 52 adjoin upwards, while the bar 53 is arranged at the top on the cross piece of the base part 51. At the bottom, the U-shaped base part 51 is closed by the trough 51 ″. The two pillars 52 of a frame are provided with bores 52 'through which pipe anchors 54 lying parallel to the axis of the shaft 21 are drawn. T-shaped profiled rails 54 'are attached to the pipe anchors 54 between the pillars and parallel to them. The rollers of the press chains 6 run on their flanges. Anchors (cross connectors) 54 ″ are provided for easily adjustable tensioning of the two chain frames 5 against each other At the bottom of the legs 51 'of the base part 51 are the bearings 55' for the lower chain shafts 67, on which bushings 68 with chain wheels 55 "sit; on the ends of the sockets 68 facing the bearings 55 'are seated flanges 66 with teeth for the ratchet drive for the press chains actuated by the hydraulic presses 7, T. This drive is not described in detail here. Two press chains 6 of a frame 5 are operated by a ratchet mechanism which contains two associated presses 7, 7 '. For the purpose of lateral covering of the shaft, the two scaffolds 5 can be braced together on each side by cover plates 57, the effect of diagonal bracing being achieved when the side edges of the cover sheet 57 touch the pipes 54 protruding from the scaffolding pillars 52, as is the case is shown in FIG. The arrangement of a spray nozzle 58 above the lower sprocket 55 ″ near the returning chain strand is essential for proper operation the upper guidance of the scaffolding 5 against the frame 3 is achieved by the fact that under the boxes 53 of the base part 51 guide rings are seen into which the pistons of the hydraulic presses 4 protrude Load the guiding task, separate guiding means can be provided on the frame 3 or, as mentioned earlier, additional guiding means which can be arranged outside the machine on the building; In this case, the frame 3 must be able to be adjusted in accordance with the displaceability. It is advantageous to connect both hydraulic presses 4 to the same hydraulic system in order to obtain the same force and load conditions. The frameworks are also supported on the spindles 32 of the frame 3 by flanges 59, which are "welded to the plate parts 51 'of the base part 51 and are screwed tight between two nuts of each spindle 32. These additional support means are used to fix the hydraulic presses 4 set height and thus relieve the presses of this task. Support means of this type are known. 1. Continuous grinder for wooden sticks that go down in a vertical shaft between the driver chains guided and pressed against a grindstone, the driver chains and their drives are adjustable in height by means of two frames (5) which take up the bearings of two chains and their drive and which are seen via hydraulic presses (4) on two U-shaped frames (3), which surround the grindstone (2) on one Pedestal (1) are and are adjustable against each other. 2. Continuous grinder according to claim 1, characterized characterized in that each chain frame (5) has two pillars (52) which are supported by pipe anchors (54) parallel to the shaft (21) of the grindstone (2) are penetrated and connected to each other are, with the pipe anchors (54) engaging cross connectors (54 "), which the two scaffolds (5) brace against each other. 3. Continuous grinder according to claim 1 and 2, characterized in that the frames (5) over their lower guide point in the frame (3) either through parts fixed on this, for example the hydraulic presses (4), or through angle profiles attached to a part of the building are led. 4. Continuous grinder according to claim 1 to 3, characterized through spray nozzles (58) in the space above the lower sprockets (55 "). 5. Continuous grinder according to claim 1 to 4 optionally, characterized in that the drive two press chains (6) of a frame (5) from one of two hydraulic presses (7, 7 ') operated latch mechanism exists. Considered publications:
German utility model No. 1747 685;
British Patent No. 234190;
U.S. Patent No. 1499,547. 1 sheet of drawings 509 758/15 12.65 © Bundesdruckerei Berlin