DE2316032A1 - HOLDER FOR A ROCK CUTTER, IN PARTICULAR FOR CUTTING DISCS FOR ROCK MINING - Google Patents

Description

Holder for a rock cutter, in particular for cutting disks for mining rock

The invention relates to cutting disks for rock and in particular a holder for such cutting discs.

Various devices for holding cutting disks are known, which are used for rock mining. One of these devices uses an axially removable economy bolt, which spans the distance between the opposite end parts of a mounting saddle. Embodiments of this bracket are described and illustrated in U.S. Patents 3,389,760 and 3,449,024.

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Other known brackets are provided with clamps and bolts, which serve to attach a support bolt or a support shaft to end bearings. Examples of embodiments of this construction are described in U.S. Patents 3,216,513 and 3,612,196 and explained. In the last-mentioned US patent, a fastening or bracket for a tailor is shown at the same time, which a mounting base in a radially outer end bearing or. End bracket is assigned. Such a base takes an end portion of the Cutting support shaft or the support bolt. The opposite end of the load bearing capacity is attached to the other repository with the help of clamps.

Based on this, the object of the invention is to provide a novel To create bracket for a rock cutting disc. The bracket should be designed so that the assembly and disassembly The work required for the cutting disks on their mounting saddle or block can be reduced to a minimum.

According to the invention are a fastening pin and a corresponding one the tenon receiving sockets are provided at each end of the cutting assembly. The mounting pins or bearing pins can be made from the Ehdteile of the support shaft for the cutting disc exist. The pedestal for these pins are arranged in the repository. The pedestals can can also be formed in the end parts of the load-bearing capacity, the fastening pins are borne by the repository. According to the invention, one of the repositories is relatively fixed, while the other is readily available is removable. Removal of a cutter requires loosening and removing the releasable end bearing from its holder, after which the cutting disk removed from the second end bearing in the final direction will. The second end bearing preferably has a threaded base,

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which is coaxially assigned to the cutting disk and the support shaft axis is. An elongated bolt extends axially through the support shaft (and possibly through one in each of the bearings therefor provided opening) and is screwed into the threaded base. Inclined or tapered mounting pins and corresponding. Mounting sockets can be used. It can be an elongated connecting bolt are used to move the two connecting bolts relative to each other and to move the so-called fastening pins to be firmly attached to the base.

The invention is described below using exemplary embodiments Explained with reference to the accompanying drawing.

Fig. 1 is a view of a first embodiment of the cutting device showing the mounting base, the Ehdlager and the upper half of the cutting disk assembly in axial section, while the lower half of the cutting disk assembly is shown in side view;

FIG. 2 is an exploded view of that shown in FIG. 1 Cutting disk arrangement showing some parts in sectional viewj

3 is a view of the cutting disk assembly illustrated in FIGS in the assembled state;

FIG. 4 is a view comparable to FIG. 1 of a further embodiment of the cutting assembly;

FIG. 5 is a view comparable to FIG. 2 and shows the modified arrangement shown in FIG. 4;

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FIG. 6 is a view comparable to FIG. 3 and shows the modified cutting arrangement according to FIGS. 4 and 5;

7 is a view similar to FIGS. 1 and 4 further embodiment of a cutting arrangement; .

FIG. 8 is a view comparable to FIGS. 2 and 5 of that in FIG. 7 illustrated embodiment; and

9 is a view of the cutting assembly similar to FIGS. 3 and 6 8 in the assembled state.

The separating or cutting device shown in FIGS. 1-3 comprises a Base 10, a first end bearing attached to one end of the base 10 12 and a second at the opposite end of the base 10 releasably attached End bearing 14. The base 10 is attached to a cutter support 16 by welding or in some other way (for example on the cutting head of a tunnel boring machine).

The two end bearings 12 and 14 are essentially perpendicular to the surface of the cutting support 16 aligned. The bracket further comprises an elongated support shaft 18 which, after attachment, perpendicular to the through the Line "x" shown in Fig. 1 axis of rotation of the carrier 16 and radially with respect to the same. '

In each embodiment of the invention, the detachable part of the The cutter (i.e., the cutting disk subassembly) includes a spreader 18, a cutting disk 20, a pair of combination bearings 22, and a pair of seals 24. The bearings 22 are used for holding of the cutting disk 20 so that it revolves around the support shaft 18

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can turn. The support shaft 18 is according to one embodiment on a End with an enlarged diameter part 26, with a smaller diameter central part 28 and with a threaded part 30 trained. The bearings 22 are guided on the central part 28, while the threaded part 30 serves to receive a retaining nut 32. As can be seen are the bearing 22 located on the right according to FIG. 1 and a central spacer ring 34 from the small-diameter end the support shaft 18 pulled up. The cutting disk 20 is also installed from the smaller diameter end of the support shaft 18 and is displaced in the end direction until its inner spacer flange 36 rests in the form of a shoulder on the bearing 22 that has already been installed. Afterward the second bearing 22 is brought into position, after which the retaining nut 32 can be screwed on.

As can be seen, the cutting disk 20 has an annular edge 38, a cutting ring 40 and a retaining ring 42.

The exact design or composition of the bearings, the seals and the cutting disc as well as the way they are attached Elements on the support shaft are not an integral part of the present invention, but various Äusführungsfor men accessible.

According to Fig. 1-3, the end bearing 12 in the form of a stand, occasionally also named as the first end bearing, an inwardly widening base 44 for receiving the shaft. The corresponding The end part of the support shaft 18 is an outwardly tapering pin 46 corresponding bevel and size. At the base of the Base 44 is a base 48 having an internal thread and having a smaller diameter.

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The wall opening is the base used to hold the pin associated with the support shaft 18 and an elongated bolt 50 coaxially. The bolt 50 extends through a center of the support shaft 18 running bore.

The repository 14, also of stand or bracket form and as The second end bearing, called the second end bearing, carries a cylindrical base 52 for receiving a cylindrical journal 54 of the support shaft 18. In the present case In this case, the pin 46 is also referred to as the first end part of the support shaft or as the first fastening pin. The pin 54, on the other hand, is referred to as the second end part of the support shaft or as a second fastening pin. The base 54 is sometimes used as the first mounting base while the base 52 may be referred to as a second pin mounting base.

The second end bearing 14 is detachably attached to the end of the base 10. It can have a downwardly extending shoulder 56 which fits exactly into a corresponding recess in the base 10 is. Such a bearing 14 can be attached to the base 10 by means of machine screws 16. To this end, extend the machine screws or bolts through aligned openings in side members 62, 64 and in base 10 and are means of nuts 66 fixed (Fig. 1).

The lower part of the repository 14 is divided along a plane "y", which axially penetrates the base 52.

Assuming that the support plate or base 10 is firmly attached to a cutter support (such as a cutter head a tunnel boring machine, as shown in Fig. 1 of the aforementioned

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U.S. Patent 3,612,196) and that the end bearing 12 is attached to this base 10, then the cutting disc subassembly (Support shaft 18, cutting disk 20, bearing 22, seals 24 etc.) moved in the end direction until the fastening pin 46 rests inside the base 44. This movement does not have to run along a straight path, but can also run along it run along a curved path. The repository will then be 14 moved relative to the cutting disk subunit until the pin or end portion 54 of the support shaft is received within the base 52. The recess 58 is open at its end, so that the shoulder 56 during the movement of the bearing 14 described above can slide into this recess.

The elongated bolt 50 is then initially through an opening a cover 68 and then inserted through the elongated central bore of the support shaft 18. The bolt 50 will tightened to tightly tighten the cutting disc assembly against the end bearing 12 and the pin 46 tightly within the base 44. The machine screws or bolts 60 are then installed, after which the nuts 66 can be tightened. When the machine screws 60 are clamped downwards, the two parts of the end bearing 14 move closer to one another in the area of the slot, so that the walls of the base 52 frictionally fit the periphery of the mounting pin 54 grasp or clamp. The cover 68 is only provided to protect the bolt head 70. How out 1-3, the bolt head 70 is within a counterbore provided in the cover or cap 68

The embodiment according to FIGS. 4-6 is described below. The cutting disk 20 and most of the elements that are used for turning

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serve to support the disk with respect to the support shaft 18 ^s are identical to the components explained with reference to the embodiment according to FIGS. 1-3. As a result, these individual elements will not be described again.

In the embodiment shown in FIGS. 4-6, sockets 96, 82 with a bevel are provided in each of the end bearings 12 ³¹ J ₁ 14 ^J. _{A complementary fastening pin 74 S} 76 tapering outwards as shown is arranged at each end of the support shaft 18 *. In this embodiment, the mounting pin 76 and the retaining nut for the bearings, etc. are combined in a single body. Such a body 76 is screwed onto the smaller diameter part of the support shaft 18 ^s.

The beginning of the assembly of the embodiment described corresponds essentially to the sequence _s as it was explained with reference to the embodiment of FIGS. 1-3. In the present case, however, a trapezoidal downwardly opening recess 78 in a repository 14 ^s "provided The groove or recess 78 accepts a ₀ complementary wedge 30 ,, which extends outwardly from the base 10 by *. The recess 78 is aligned with the wedge 80. As a result, the end bearing 14 ^{s is moved} in the direction of the partially already attached cutting disk subunit until the wedge 80 is loosely enclosed by the recess and the pin 76 is loosely seated within the base 82. A connecting bolt 50 is then inserted through an opening 84 of the end bearing 14 ^? and inserted from there through the central bore 86 of the support shaft 18 ^s . The bolt 50 is rotated so that its threaded end portion 48 screws into the threaded socket 90. When tightening the bolt 60 may be head 70 occurs in a counter bore 94 which the off a _s

tion 84 in the repository 14 * surrounds. So the head 82 of the bolt rests the base of the counterbore or counterbore 94. When the bolt 50 is tightened further, it presses the end bearing 14 'closer to the end bearing 12 *. In doing so, the pins 74 and 76 are pressed tightly against their respective sockets 96 and 82. Finally a cross bolt 98 is tightened, in order to draw the lower side parts 100 and 102 of the end bearing 14 together so that they encompass the wedge 80. In this embodiment of the invention, the end bearing 14 * is above with a gap 104 of the wedge 80 or the recess receiving the wedge. The bolt 98 extends through one above the wedge 80 the Gap 104 intersecting channel. The one located inside the end part 100 Part of the bolt bore is provided with an internal thread and receives the thread of the bolt 98. A counter or counterbore 106 is designed for the head 108 of the bolt 98.

An advantage of the embodiment shown in FIGS. 4-6 can be seen in the fact that no bolt heads are exposed and consequently cannot be knocked off etc. while the cutting or cutting device is in use. There are also no bolt heads in the area of the two repositories 12 * and 14 *, which are closest to the rock face to be cut.

The embodiment of a holder shown in FIGS. 7-9 corresponds essentially to that with reference to FIGS. 4-6 described arrangement. As a result, only the existing differences are explained. Also in this embodiment will be the cutting or cutting disk 20, the bearings 22, the seals 24 etc. not explained.

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The support shaft 18 ^H is of tubular shape and has an inwardly tapering sockets 110, 112 at each end. The base 110 serves to receive a complementarily designed, inwardly tapering pin 112, which is part of each end bearing 112 ". A second inwardly tapering fastening pin 116 is formed by the second end bearing 14". carried. In this embodiment of the invention, a transverse bore 118 penetrates the wedge 80 *. The channel or the bore 118 may be brought into alignment with a bolt-receiving channel 120, which the bottom side portions 122, 124 of the end bearing 14 "durchsei; zt _s when the wedge * 80 is within the recess 78 * of the channel. 118 is wider than the diameter of the cross bolt ~ 98 "As a result, the position of the end bearing 14" can be changed axially with respect to the support shaft 18 ", while the cross bolt 98 is held in the channel 118 as well as in the channel or in the bore 120.

Assembly begins when the cutting disc subassembly is moved relative to the end bearing 12 "to insert the pin 114 into its base 110, then the end bearing 14" is moved into position with the wedge 80 ^J entering the recess 78 and the mounting pin 116 is received by the associated base 112. The connecting bolt 50 is first inserted through its opening in the bearing 14 "and from there through the open center of the support shaft 18". The bolt is screwed into the threaded socket or the threaded hole 126 within the end bearing 12 ″, which lies coaxially with respect to the pin 114. The bolt 50 is tightened in order to place the fastening pins 114 and 116 tightly against the sockets 110 and 112 Tightened transverse bolts 98 in order to clamp the two clamping parts 122 and 124 both against one another and with respect to the wedge 80 *.

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In the embodiment shown in FIGS. 7-9, only two bolt heads are provided. Both of them are in the camp 14 "let in so that they are always protected against wear and tear.

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Claims (16)

PATENT CLAIM It 1. Holder for a rock cutter, in particular for a cutting and cutting disc for rock mining, characterized in that the holder is provided with an elongated support shaft (18) through which a bore extends in the center in the axial direction, furthermore a first end bearing (12) , a first retaining pin (46) which is located either on the first end part of the support shaft or on the first Ehdlager and is assigned to a complementary first base (44) on the other part, so that the retaining pin (46) and the base receiving the pin are assigned to each other in their position «that they are in engagement with one another when the support shaft moves in the direction of the first end bearing, that a second end bearing (14) of the holder has means (60), which the bearing at a distance from the" first Fasten the end bearing on its base so that a second retaining pin (54) is either on the second end part of the support shaft or on the second end bearing (14) and is assigned to a complementary base (52) on the other part, a threaded base (48) being located in the first end bearing (12) and being alignable with the bore running in the center of the support shaft so that an elongated bolt (50) passes through the Central bore of the support shaft can be introduced, and that a threaded end part of the bolt can be screwed into the threaded base (48) so that the bolt can be used to fix the support shaft at least on the first end bearing. - 12 - 3018427 240 034 JC 2. Holder according to claim 1, characterized in that the first end bearing (12) is attached to a base (10), and that the second end bearing releasably securing means consist of machine screws (60) through which the second end bearing is releasably attached to the Base is attached. 3. Holder according to claim 2, characterized in that the first and second end parts of the support shaft (18) have the first and second sockets for receiving the retaining pins, and that the first and second retaining pins are located on the first and second bearings. 4. Holder according to claim 2, characterized in that the first and second end parts of the support shaft have the first and second retaining pins and that the sockets are formed on the first and second bearings. 5. Holder according to claim 4, characterized in that the first end bearing is divided into two parts (62, 64), and that the separation runs between the two parts along a plane (y) which axially penetrates the base of the end bearing. 6. Holder for a rock cutter, characterized in that an elongated support shaft of the holder at each of its ends is equipped with an outwardly tapering retaining collar, furthermore with a base, with a first end bearing, which is attached to the base and has a complementary first base for receiving the first retaining collar, the base and the retaining collar interlock when the support shaft is in the final direction that a second repository is pushed onto the first repository - 13 - 309842/0437 Means is provided, which releasably fasten the bearing ah the base at a distance from the first end bearing, and that a complementary second base receives a second retaining collar when the second end bearing is moved axially with respect to the range. 7. Holder according to claim 6, characterized in that the Support base with one extending outward at the second end bearing Wedge is equipped, and that the second repository is a has the wedge receiving recess. 8. Holder according to claim 7, characterized in that the second end part after them has pushable side parts which the Form a recess, and that means the side panels in a fixed position press on the wedge. 9. Holder according to claim 6, characterized in that the first end bearing has a threaded oekel which is coaxial with respect to each other of the second base for receiving the retaining collar extends that a central bore extends in the axial direction of the support shaft, and that an elongated bolt through the central bore of the support shaft is insertable and has a threaded end portion which is in the threaded base can be screwed in so that the bolt can be used, to attach the support shaft to at least the first end bearing. 10. Holder for a rock cutter disc, characterized in that that the holder has an elongated support shaft which at each of their ends with an obliquely inwardly directed base is provided for receiving a retaining collar, furthermore a mounting base, a first end bearing which is attached to the base and a - 14 - 309ÖU / (H37 complementary first retaining collar for insertion into the first base carries when the support shaft moves in the final direction on the first end bearing is that a second end bearing is provided with means to releasably attach it to the base at a distance from the first end bearing and a has second complementary retaining collar which can be introduced into the second base when the second end bearing is axially relative to the Support shaft is shifted. 11. Holder according to claim 10, characterized in that the Bracket base has a wedge projecting outward at the end of the second end bearing, and that the second end bearing has a wedge receiving recess carries. 12. Holder according to claim 11, characterized in that the second end part inwardly directed compressible side parts which form the recess, as well as means to press the side parts tightly against the wedge. 13. Holder according to claim 10, characterized in that the first end bearing is coaxial with respect to the second retaining collar extending threaded base has that the elongated support shaft penetrates through a channel running in the center in the axial direction is, and that an elongated bolt through the channel running in the middle of the support shaft is insertable and one can be screwed into the threaded base End part, so that the bolt can be used to attach the support shaft to at least the first end bearing * 14. Holder for a rock cutter disc, characterized in that that the bracket with an elongated ^ first and second Is provided with end parts having support shaft, furthermore with a bracket - 15 - 309842/04 3 7 base, to which a first end bearing is attached, that a first The retaining collar is arranged on the first end part or on the first end bearing, while a complementary socket is provided on the other part that the retaining collar and the socket are aligned so that they go through Movement of the support shaft in the direction of the first end bearing in engagement get that a wedge from the bracket base on the first repository opposite end outwards. that a second end bearing has means which releasably fasten it to the base at a distance from the first end bearing, the means being compressible Have side parts which form a groove for receiving the wedge, as well as means which the side parts for For the purpose of jamming in contact with the wedge, compress a second retaining collar on the second end portion of the shaft or on the second End storage is provided, while there is a complementary second base for receiving the collar on the other part, and that the second retaining collar and the second base for receiving the retaining collar engage with movement of the second end bearing when the key is pushed into the groove. 15. Holder according to claim 14, characterized in that the elongated support shaft has a shaft body fin in the axial direction in the center penetrating bore has that a threaded base on the first End bearing is formed and can be aligned on the central channel of the support shaft that an elongated bolt through the central channel of the support shaft is insertable, and that a threaded end portion of the bolt can be screwed into the threaded socket so that the bolt can be used to to fix the support shaft to at least the first end bearing. 16. Holder according to claim 15, characterized in that the second end bearing has an opening receiving a bolt, wel- - 16 - 309842/04 37 before with the channel running in the middle of the elongated range aligns when the retaining collars are within the associated socket and that the elongated bolt with a larger dimension is designed as the head having the bolt opening, so that the head of the bolt rests against the second end bearing when it is tightened and pushes it in the direction of the first repository. 309842/0437 Blank page