DD149396A1 - DEVICE FOR SETTING MOUNTAIN ANCHORS - Google Patents

Abstract

The invention relates to mining machines for the introduction of rock anchors. The invention aims to reduce the manufacturing costs. The invention relates to a device for setting rock anchors in mining, with the help of rock anchors can be introduced mechanized for securing aufgefahrener cavities. The aim of the invention is to provide a feed-Rueckzug-system for drilling and anchor cat, which affects the cost, the mass, the Aboerfaelligkeit and the ease of repair of a anchor mesh mount crucial. According to the invention, the object is achieved in that the feed device located in the carriage consists of an endless feed chain, which is driven by a drive motor via a drive pinion, and on which a chain driver is located, which run depending on the direction of rotation of the drive motor in the Mitnehmeraufnahme the drill cat can and thus ensures the typical working movements of drill cat and anchor cat. The invention is preferably used in underground mining.

Description

a) Title of the invention

Device for setting rock anchors in mining

b) Field of application of the invention

The invention relates to mining machines, mainly in underground mining, with the help of which rock anchors can be introduced in a mechanized manner to secure raised cavities.

c) Characteristic of the known technical solutions

In a known technical solution, an apparatus for setting rock anchors is shown, in which the feed-retracting movement of the drill cat and anchor cat is realized by a working cylinder «Bohrkatze, anchor cat and cylinder are connected by a complicated system of chain guide. The attachment points of chains or ropes on drill and anchor cat as well as the variety of chain or Seilumlenkrollen are in rough mining conditions often cause interference and failure.

The piston rod of the working cylinder for feed retreat of the cats have a production-consuming special piston rod head, which takes on the function of a loose roller when the working cylinder is extended.

The operation of the anchor mesh mount works as follows;

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Drilling off the drill string

Swiveling the mount around an axis, so that anchor rod with anchor cat under the borehole axis comes to a standstill.

Insert the anchor rod with subsequent tightening of the anchor nut

Retreat of the anchor cat

In order to be able to realize this order, the anchor cat must be locked in drilling operation and when setting the anchor, the boom cat · For this purpose, one uses according to the prior art, a bolt which is rigidly connected by a cut flat iron with the Laffcttenhalter. Latches, flat bars and the associated fasteners are labor intensive and cause downtime in rough mining operations.

A major disadvantage of the known anchor mesh mount are complex work during assembly and disassembly of the drill and anchor cat, 'v'ird cat, e.g. dismantled, the operations must:

Loosening the chain tensioning device Loosen the chain on the front of the cat. Release the chain on the back of the cat. Release at least one slide rail

(which keeps the cat on the lafettenträger) to be executed. These operations are often hampered by corrosion of the fasteners and adherent caked cuttings.

Another disadvantage of the known anchor mesh mount is the required. Minimum web height of the cross-piece carrier profiles.

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If low clearance fields are to be secured with rock bolts, it is necessary to work with shortened anchor bolt carriages. By reducing the length of the carriage and, consequently, the Bohrankatzenhubes a shortened working cylinder for the Bohrkatzen- anchor cat movement must be used in the known Ankersetzlafette · If a standard working cylinder is used with shorter stroke length, then the Diszanz the stroke length reduction S due to the feed principle "Loose roll" on the drill cat trolley stroke with the stroke shortening Z S off. Consequently, with a shortened anchor mesh mount only shortened anchors could be introduced into the mountains, which affects the safety of the mine under certain circumstances.

d) Object of the invention

The aim of the invention is to provide a feed system for Ankersetzlafetten, in which by reducing the components

- The cost of the anchorage armature be reduced

- The Lafettenmasse is reduced

- The susceptibility is reduced

- The maintenance and care compared to known Ankersetzlafetten be lower.

The invention is based, without relaxation and solution of the feed chain and without solution of the cat slide, drill and anchor cat in the shortest term on the Lafettenträger to assemble or disassemble the task "

Likewise, there are possibilities to optimally adapt the carriage length to the rock bolt length.

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e) Presentation of the essence of the invention

According to the invention, the technical object is achieved in that the advancing movement generating working cylinder conventional Ankersetzlafetten is replaced by a reversible in its direction, electric pneumatic or hydraulic engine · The drive motor is flanged directly to the same in the upper third of the carriage and generated without intermediate gear on a Drive pinion, an endless feed chain and a chain follower on it, feed and retraction movements of the drill or anchor cat.

A chain tensioner, which is preferably located on the opposite side of the drive pinion, generates the necessary for the drilling and anchor operation chain deflection and chain prestressing.

When drilling position of the carriage and drilling feed the Kettenmitnehmer moves on the circular path of an attached in the chain tensioner Uralenkrolle in a driver receiving the drill cat, upon further rotation of the drive pinion, the drill cat is caused to move with the drill string in the firing direction. As the drill string of the drill cat rotates, a wellbore is placed at the intended location in the mountains. After drilling has taken place, the drill trolley and the chain driver return to their original position. Subsequently, the carriage is pivoted from the drilling position to the anchor position. If the feed chain is now moved in the direction of movement "retraction drill cat", the Kettenmitnehmer leaves the Mitnehmeraufnahme the drill cat and passes after passing through the chain tensioner in the Mitnehmeraufnahme the anchor cat, after which the anchor cat including rock anchor is moved in the firing direction.

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The rock anchor is pushed into the prepared hole and subsequently braced in the usual way. The anchor cat retraction is analogous to the drill cat retraction, after reversing the direction of rotation of the drive motor ·

If the chain driver is not located in the catch receptacle of the drill cat or anchor cat, the drill and / or anchor can be moved freely on the carriage. They are held only by easily removable stops in the rest position at the lower carriage end. If one removes a stop pair, then the respective cat can be taken by the carrier without relaxing or releasing the feed chain and removing it without slide rails of the cat.

By using the new feeding principle according to the invention, it is possible to use Lafettenträgerprofile low web height and belt width, which corresponds to a saving of material and ultimately affects the overall mass of the carriage crucial.

By lengthening or shortening the Lafettenträgerprofile .und the endless feed chain, the length of the Lafett mount the rock anchor length can be optimally adapted.

The invention will be explained in more detail in the following exemplary embodiment and in the attached drawings FIG. 1 to FIG. 6.

f) embodiment

On a boom 1 (FIG. 1), a carriage holder 2 with the working cylinder 3 is tiltably arranged. The pivot axis 4 and the bearing block 5 of the working cylinder 6 are rigidly connected to the carriage holder 2. The carriage 7 is by pivot bearing 8 with the pivot axis

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connected. By the lever 9 »attached to him, pressurized working cylinder 6 and the pivot rod 1o, the carriage 7 can be moved about the pivot axis 4. A working cylinder 11, which is located in the pivot axis 4, and is connected via a bearing block 12 with the carriage 7, additionally guarantees an axial displaceability of the carriage 7 ·

FIG. 2 shows the anchor setter in the drilling position, with the extended working cylinder 6 bringing the drilling cat 13 and the drill string 14 into a defined position. After drilling out of the drill string 14 and the withdrawal of the drill cat 13, the working cylinder 6 can be retracted.

FIG. 3 shows the anchor position, whereby now the anchor cat 15 with the rock bolt 16 is below the borehole.

FIG. 4 shows the principle of the feed chain drive. The drive motor 17 "on which the drive pinion 18 is mounted generates, via the feed chain 19 and the Kettenmitnehraer 2o the feed and retraction movements of the drill trolley 13 ^{un <} i anchor cat 15 ·

The chain driver 2o moves during the feed of the chain tensioner 21 via the guide roller 22 in the catch receptacle 23 of the drill cat 13 · The following Eranslatorische movement of Kettenmitnehmers 2o in firing direction corresponds to the feed of the drilling cat 13 · The transmission of the feed forces via the positive connection, the Chain driver 2o with the hook 24 of the cam receiver 23 received. Upon retraction of the drill trolley 13, the chain driver 2o lies against the nose 25 of the catch receptacle 23 and leaves it in the lower position of the drill trolley 13. These operations are carried out in the drilling position of the bolt set apparatus (FIG. 2). After swirling in the anchor position (Fig. 3), the rock anchor

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The advancing and retreating of the anchor cat 15 takes place analogously to the drilling cat 13 by the chain driver 2o, which, however, now becomes effective in the catch receptacle 29 of the anchor cat 15.

The drive motor 17 with drive pinion 18 can be effective on the carriage 7 as a direct drive or as a drive with pulleys 26. Figure 4 shows the variant drive via pulleys and Fig. 5 variant direct drive ·

The embodiment according to FIG. 4 has the advantages that the drive motor 17 does not get into the ridge area when the carriage is pressed against the ridges and that the eccentric rollers 26 permit a larger boring and anchor cage stroke on the carriage 7.

The chain cam 2o preferably consists of the plug member 27 of a double chain or triple chain and attached multiple link plates 28 of the same chain pitch (Fig. 6).

Claims (1)

invention claim Means for setting rock anchors in mining consisting of a carriage on which a drill cat and an anchor cat can move slidably, and which is pivotally mounted about a pivot axis, characterized in that in the carriage (7) located feed device from an endless Vor 8chubkett «(19), which is driven by a drive motor (17) via a drive pinion (18), and at which a Kettenmitnehmer (2o) is located, depending on the direction of rotation of the drive motor (17) in the cam receiver (23) or (29) the drilling cat (13) or the anchor cat (15) can run in and thus ensures the typical advancing or retracting movements of the pipe cat (13) and anchor cat (15). Device according to item 1, characterized in that the drive motor (17) is flanged directly onto the carriage (7) and is designed in the type of drive as a direct drive (Pig. 5) or as a drive via deflection rollers (26) according to FIG. Device according to point 1, characterized in that the Kettenmitnehmer (2o) preferably from the male member (27) a double or triple roller chain and a plurality of link plates (28) of the same pitch composed. For this. Jt-rare drawings