DE7329166U - Boom, especially for a road driving machine in underground mining operations - Google Patents

Description

PATENT ADVERTISER BODES 4035 HqSEiJ- ^ OSTfAGH 114 (3rd TELEPHONE 02102-JBU- TELEX 8585106

R 1-398

DOBSON PARK INDUSTRIES LIMITED:

Dobson Park House, Cclwick Industrial Estate, Nottingharn NGU 2BX, Nottinghamshire, /

England /

Boom, especially for a drive-on machine in underground mining operations

The invention relates to a boom, in particular for a road driving machine in underground mining operations an adjustable articulation for carrying a tool, in particular a percussive mining tool which the angular position of the parts of the articulated work is adjustable with respect to the displacement of the articulated work.

In the case of tunneling in underground mining operations, it is particularly important when using mining tools it is often necessary to change the angle of attack at which the tool engages the face during work. This requirement arises essentially from the fact that when driving on the road one often has to work differently hard rock, which requires different angles of attack of the tool. When using the known With the extension arm, it is of course possible to change the angle of attack of the tool by changing the angle of the

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PATENT ADVERTISER BODE. 4033 red. ¹ HOStFACt) 1140. ¹ TELEPHONE 02102-dHM · TELEX 85a516Ä

Articulated work is adjusted with respect to the displacement of the articulated work, whereby the of the articulated work carried tool pivoted. With the known boom constructions, however, changes in the angle of attack of the tool also always the position of the tool tip, so that the chassis or the like carrying the boom would have to be implemented if the tool continues to work at the same point on the face after changing the angle of attack should, as before changing the angle of attack. One but such a way of working would be extremely time-consuming and must therefore be omitted. On the other hand, it would be Very beneficial in many ways if the tool after changing the angle of attack to exactly the same Position of the face could continue to work.

It is therefore the object of the invention to develop the boom of the type mentioned in such a way that changes the angle of attack of the extraction tool are possible without the point of attack in this change in the angle of attack is moved on the face.

The subject of the invention is a boom, in particular for a road driving machine in underground mining operations, with an adjustable joint mechanism for carrying a tool, in particular a percussive mining tool, in which the angular position of the parts of the articulation is adjustable with respect to the displacement of the articulation, which is Boom characterized by the fact that the angular position of the parts of the articulation works simultaneously with respect to the respective location the tool tip is adjustable.

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PATENTANWALT BODF · 4033 HOEEL · fOfcTFAGH i'i4c '· TELEPHONE 02102-ΛΒΒ · TELEX 8585166 p

Such a boom can be pivoted about the tool tip, so that it is possible to adjust the angle of attack of the tool to change without affecting the point of attack moves on the face.

According to a preferred embodiment of the subject matter of the invention, the articulation at the head of a straight line extendable and retractable extension arm relocated. With a such a boom is possible, the striking extraction tool to use for tearing or widening the section joints or the ridges or the sole, whereby the The tool is moved approximately parallel to these surfaces and a "strip of a certain thickness" is peeled off from these surfaces. As a result of the above-mentioned DB special angular mobility of the articulation in relation to the tool tip it is possible to adjust the angle of attack during this peeling process, i.e. during the straight extension of the support arm of the tool without affecting the penetration of the tool xn changes the section joint or the roof or the bottom.

The longitudinal axis of the tool is expediently angularly adjustable around the tool tip and at the same time around the attachment point of the tool on the work mechanism when the extension arm is stationary. This makes it possible the above-mentioned peeling of:} REPEAT to route or shock to the sole or ridges several times, wherein the Lär ^ axis of the tool in each case in such a way

is pivoted that one after the other lying parallel to one another Paring cuts can be carried out.

The articulation expediently has a two-armed cranked one. Lever on * the pivotable at the head of the retractable and retractable

PATENT ADVOCATE BOOE. 4033 HöSEl. ¹ -'RQSTFAQH 1140 "TELEPHONE 02102-β ·» · TELEX 8585166

Cantilever arm is shifted and one arm on one displaced in the head of the cantilever arm, designed as a pressure cylinder and for pivoting the lever Serving pivot cylinder engages, while a lower support plate for the tool on the other arm of the lever is articulated, on which in turn a mounting plate for the tool is pivotally attached, wherein on the lower support plate there is also a pressure cylinder that is also displaced at the head of the extension arm trained adjusting cylinder for adjusting the angle between the lower support plate and the associated arm of the lever engages and another between the lower support plate and the fastening plate for the tool Pressure cylinder is provided for pivoting the mounting plate against the untex * e support plate.

With this design of the boom, 3S is possible, initially by extending or retracting the lever that acts on the two-armed lever Swivel cylinder to fix this lever in a certain position. You can then use the appropriate Retraction or extension of the adjusting cylinder arranged between the lower support plate and the head of the boom the angle of attack of the tool can be fixed. Then the straight retractable and extendable Cantilever arms are extended, with the extraction tool leaving a strip of a certain width on the section joint wins in. While the extension arm is being extended, the adjustment cylinder can be actuated accordingly the angle of attack of the tool can be changed, with the tool only pivoting around its tip, otherwise but maintains its position relative to the shock.

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PATENTANWALT BODE ■ 4033 HOSEl · POST BOX 1140 · TELEPHONE 02102-ΛβΒ · IELEX 858516ο

The lower support plate and the fastening plate for the tool are expediently pivotable about different axes, these axes are expediently perpendicular to one another. This makes it possible, if necessary, to swivel the tool in such a way that that with successive extension movements of the boom arm, parallel stripes on the joint hareing won will.

The extendable and retractable extension arm is expediently carried by a base body which is provided with hydraulic rams, which the base body at any height and in a certain position relative to the working face between the boundary surfaces of the Determine the pit to be driven. This makes it possible to bring this base body into any required position and to fix him in this position. The extendable and retractable extension arm is expediently assigned to the base body Roles led. As a result, large transverse forces can also be transmitted to the base body with relatively little friction will.

An embodiment of the invention is explained in more detail below with reference to the drawing, in which

Fig. La and Ib together a side view of a road loading machine with the attached boom,

2a and 2b together show a plan view of the road loading machine and

Fig. 3, 4, 5 and S partially show a plan view of the boom

show different angular positions of the gel tool.

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PATENT ADVERTISER BODE ■ 4033 HCSEL. PpSTFA (JH Yl (IQ: TELEFON 02102-βΗΒ ¹ ■ TELEX 8585166

The machine shown in the drawing has a base body Io on j of the four hydraulic rams that can be extended downwards 11 and four hydraulic rams 12 that can be extended to the rear takes up the over journal bearings loa on the base body Io are attached. The hydraulic rams 11 and 12 make it possible to relatively the base body Io at the required height to be braced to the excavation front between the roof and the bottom of the pit. The journal bearings loa allow adjustment of the base body against the hydraulic ram 11 and

A retractable and extendable cantilever arm is formed from the base body Io 13 supported and guided by means of horizontal rollers 14 and vertical rollers 15.

The extension and retraction of the Aus; Relaxed arm 13 is effected by a double-acting hydraulic cylinder which is arranged in the base body Io and with its Zy ^- * is fixed inthe part 16 at ßefestigungskonsolen 17 at one end of the base body Io and engages with Stiner extendable piston rod 18 via Bnfestigungskonsolen 19 on your arm 13 . The fastening brackets 17 are detachable and can optionally be arranged at one or the other end of the base body Io in order to enable the hydraulic cylinder and the extension arm to be extended at both ends of the base body Io.

At the front end of the cantilever arm 13 is with a head piece provided with a pivot bearing 21 for a cranked Lever is provided which has two arms 22 and 2 3. The arm 22 is connected to the piston rod 24 of a double-acting hydrau-Ii ^ s swivel cylinder connected, which is in the boom is arranged and is not shown in the drawing.

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PATENT ADVERTISER BODE. 4033 HOSEL ·. 'POST BOX' ι4> · TELEPHONE 02102-IWb. TtLKX 8585166

The arm 2 3 of the cranked lever carries a pivot bearing 2 5 for a lower support plate 26, which in turn can pivot about a pivot pin at 26 a, the mounting plate 26b of a Striking tool 2 7 carries. The angular movement of the mounting plate 26b on the lower support plate 26 is controlled by a

,. Hydraulic cylinder 33 causes. The impact tool 27 can be

for example, be designed as in the German patent

_ registration P 21 47 935 is described.

Another double-acting hydraulic adjusting cylinder f is pivotable with its cylinder part 28 at 29 on the head

piece 2o of the leg arm 13 attached and engages with his

Piston rod 3o at 31 can be pivoted on the lower support plate ;.. at.

s ;, 3 when the device is actuated, the adjustment

V cylinder 23, 3o extended to the chisel 32 so deep into the

To press working face as corresponds de.r thickness of the incoming retrieved ι forming layer. Then the swivel cylinder that the

". ' Has piston rod 24 adjusted to the angle at which

the chisel 32 is intended to attack the mining front.

This angle depends essentially on the hardness or on the Resistance of the material to be recovered.

Then the extension arm 13 is extended parallel to the work face, so that the chisel wins in the pending material. The width of the recovered layer can be in that

. required dimensions can be increased by the fastening

plate 26b and the percussion tool 27 attached to it The angle of the lower support plate is adjusted using the hydraulic cylinder 33.

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PATENT LAWYER BODO 40 & HOSB. · P.OSTFACH 1] 40 · TELEFON 02102-βΡΒ ■ TELEX 8585166

The angle of attack of the chisel 32 can be adjusted during the movement along the excavation front with the aid of the swivel cylinder or whose extendable and retractable piston rod 24 can be adjusted. However, this change in the angle of attack changes the initially set penetration depth of the chisel into the working face not. This results from the special geometry of the between the striking tool 27 and the cantilever arm arranged lever linkage that carries the impact tool 27.

The axis of the lever arm runs according to this particular geometry 2 3 not parallel to the axis of the adjusting cylinder 28, 3o and are the dimensions a, B, C, D and E with respect to the The tip of the chisel 32 is dimensioned so that the impact tool 27 is when adjusting the angle of attack around the tip of the Chisel 32 pivoted.

After the boom 13 has been fully extended, it is withdrawn and the adjusting cylinder 28, 3o adjusted so that that the chisel 32 penetrates in preparation for the next cut in the mining front, in which the extension arm 13 again is extended and a further cut is made on the dismantling front. The swivel cylinder or its If necessary, the piston rod 24 can be adjusted again so that the required angle of attack is at the mining front results.

To move the machine through the mine, the machine in its entirety can be pulled or otherwise moved after the hydraulic rams 11 and 12 have been released from their tension and retracted.

- Claims - a -

Claims (9)

· I with '' "'·', 600Of PATENTANWALT BODE. 4 (ύ3 HUSB. PCJstFAfcH I1 ^ O. TELEFON 02102 -« «* · TELEX 8585166 R 1 - 398 insprche: 1. Boom, especially for a road driving machine in underground mining operations, with an adjustable Articulated mechanism for carrying a tool, in particular a striking extraction tool, in which the angular position the parts of the articulation is adjustable with respect to the displacement of the articulation, thereby characterized in that the angular position of the parts of the articulation (22 - 26, 26a, 26b, 28 - 31, Π3) is at the same time adjustable with respect to the respective location of the tool tip (32). 2. Boom according to claim! “Characterized that the Geler.kwerk (22 - 26, 26a, 26b, 28 - 31, 33) is displaced on the head (2o) of a straight extension and retraction arm (13). 3. Boom according to claims 1 and 2, characterized in that the longitudinal axis of the Tool (27) is adjustable in angle around the tool tip 132) with the extension arm stationary. 4. A boom according to claims 1-3, characterized ge ¹ ennzeichnet that the longitudinal axis of the tool (27) to the attachment point (26a) of the tool (27) on the hinge mechanism (22-26, 26a, 26b, 28-31 33 ) is pivotable. - Io - •:, · '.,. 60001 PATENTANWALT BODE 4033 HöSEL · 'P ₁ QSTFACH It «· TELEPHONE O21'i2-MMfil · TELEX 9585166 Io - 5. Boom according to claims 1-4, because you rch characterized in that the articulation (22-26, 26a, 2 6b, 2 8 - 31, 33) has a two-armed cranked lever (22 "2 3) which is pivotable on Head (2o) of the extension arm (13) is displaced and on one arm (22. ') a swiveling cylinder ( 2 ^L ) engages, while a lower support plate (26) for the tool (27) is articulated on the other arm (2 3) of the lever (22, 2 3), on which a mounting plate (26b) for the tool ( 27), whereby on the lower support plate (26) an additional displacement cylinder (28, 3o; for adjusting the angle between the lower support plate (26) and the associated arm (23) of the lever (22, 23) engages and between the lower stretcher ^ la tte (26) and the fastening plate (26b) for the tool (27) a further pressure cylinder (33) is provided for pivoting the fastening plate (2 6b) against the lower support plate (26). 6. Auslager according to claims 1 -5 ^ characterized that the lower support plate (26) and the mounting plate (26b) for the tool (27) are pivotable about different axes. 7. Boom according to claims 1-6, characterized that the lower support plate (26) and the fastening plate (26b) for the tool (27) - 11 - PATENT ADVERTISER EODc 4033 KOSHU PDSTFACH-U * TELEPHONE 02102-β »TELEX 8585166 pivotable about mutually perpendicular axes are. 8. Boom according to one or more of claims 2-7, characterized in that the retractable and extendable cantilever arm (13) is carried by a base body (lo) which is equipped with hydraulic rams (11, 12) is provided, which the base body (lo) at any height and in a certain position relative to the working face between the boundary surfaces of the pit to be driven determine. 9. Boom according to claim 8, characterized in that the extendable and retractable boom arm (13) is guided on rollers (14, 15) assigned to the base body. II / sch