CN101089364B - Traction slides for mining plows and mining plows with traction slides - Google Patents

Abstract

The present invention relates to a dragging sliding seat used for the downhill mining planer, which includes a dragging sliding seat body which can be inserted into a dent on the planer main body, the dragging sliding seat body is provided with a front part and each end of the orientating moving direction of the front part comprises a stop catch face which is used to corporately function with the relative stop catch surface on the dent part of the planer body, wherein the front part of the dragging sliding seat is combined with a buffering mechanism which corporately functions with each opposed stop catch surface that is composed of the changeable saddle plates on the mining planer at two moving directions. The invention also relates to the mining planer which includes a planer body. The planer is provided with planning tools for the two moving directions of the planer and is provided with a concave part at the bottom for receiving the dragging sliding seat connected to a planer chain. The concave part is defined by the opposed stop catch surface for interacting with the stop catch surface on the dragging sliding seat and for pointing to the moving direction. The opposed stop catch surface includes the changeable saddle plates which interact with the mechanical buffering mechanism integrated in the dragging sliding seat.

Description

Traction slides for mining plows and mining plows with traction slides

technical field

The invention relates to a traction carriage for an underground mining plow. The invention also relates to a mining plow for underground mining.

Background technique

A similar mining plow and a similar traction slide are known from DE 43 00 534 A1 of the applicant. Corresponding and cooperating projections and recesses are provided on the stop surface and on the opposite stop surface in similar traction carriages in order to improve the running behavior of the traction carriage which only acts as a push element and at the same time The mining plow can be driven under small surface pressure. Because the traction carriage is loosely located in the recess, the traction carriage and plow body can be aligned independently of each other in the course of the plow guide and this way of force transmission from the plow chain to the mining plow has been established in underground mining engineering. proof is applicable.

Contents of the invention

It is an object of the present invention to provide a traction slide and a mining plow in which improved running behavior and interaction of the traction slide and mining plow are achieved and at the same time the service life of the mining plow and traction slide is improved.

This object is achieved according to the invention for the traction carriage in that the traction carriage comprises a traction carriage body which can be inserted into a recess on the planer body, which has a guide groove behind a guide groove. The connecting piece for fixing the planer chain has a front part in front of the guide groove, the ends of the front part pointing in the direction of movement constitute stop surfaces for cooperating with opposite stop surfaces in the recess of the planer body The effect is that a mechanical damping device is integrated in the front of the traction carriage, which interacts with damping in both directions of movement with the associated counter stop surface on the mining plow. In the traction slide according to the invention, therefore, in particular after a change in the direction of movement of the mining plow, at least initially, no direct contact occurs between the stop surface on the traction slide and the opposite stop surface in the recess, but a buffer is provided. Device, which acts with a permanent buffer between the contact area of the traction carriage and the planer body at least initially, but preferably during the entire movement of the planer, and thus avoids the stop surfaces of the traction carriage or the individual parts of the traction carriage The stop surface hits the opposite stop surface of the associated planer body too violently.

In a preferred embodiment, the damping device has a damping body which is displaceable against a restoring force of a damping system, at least in the initial state. Since the damping body protrudes beyond the respective stop surface at least in the initial state, it always forms the initial contact surface between the traction carriage and the opposing stop surface of the planer body at least after a change in direction of movement. Since the damping body is at the same time displaceable and thus flexibly mounted, it can dampen the impact of the traction carriage on the opposing stop surface on the associated planer body. In a preferred embodiment, the damping system is designed such that the damping bodies always protrude beyond the respective stop surfaces regardless of their load, so that the damping system remains active during the entire planer movement.

The damping system preferably comprises at least one disc spring set for each direction of movement. It is particularly advantageous if the damping body is formed as a rod whose length is greater than the distance of the stop surfaces from one another and which has at least one fixed stop for a disc spring pack. With a single continuous rod it is possible to achieve better support of the rod for high forces acting in the direction of movement, since the bearing points of the rod can be located at a greater distance from one another. At the same time by means of a fixed stop preferably integrated in the rod, the disk spring assembly forming the damping system can obtain a sufficiently large bearing surface on the rod, the rod end face of the rod can preferably be equipped with a wear-resistant lining or be made hardened or the like. It is also advantageous if several, preferably three to five disc spring sets are provided for each direction of movement. Each disk spring set can in this case consist of four to six disk springs with a suitable spring constant so that, depending on the excess of the end faces of the rod beyond the respective stop surfaces, after the rod is fully inserted and thus the damping device temporarily For example, a force of up to 500 hN can be spring-damped per direction of movement before losing its damping effect.

Expediently, the damping device comprises a replaceable component which can be integrated into the front as a whole, and for this purpose preferably has a rod, a housing through which the rod passes to accommodate the disc spring set, and rod ends Closed ring connected to housing through. Through the combination of the closing rings and the housing, it is thus possible to provide a damping device designed as a structural unit in which the disc spring assemblies are accommodated against external influences. Advantageously, each closure ring is provided in its inner bore with at least one receiving groove for the rod seal and/or for the anti-fouling ring in order to prevent pulverized coal or water from entering the receiving space of the disc spring set or the disc spring.

According to an advantageous embodiment, the front part can have two fixed blocks rigidly connected via the traction carriage, which form the respective stop surfaces of the traction carriage on the recess with their outer faces pointing in the direction of movement, and whose inner faces form the stop surfaces for the traction carriage. The support point of the buffer device. In each stop surface, as is known per se from the prior art, an indentation groove can preferably be formed for a guide key on a mining plow formed by a slat protrusion in a recess, so as to move perpendicular to the Orientation guides and stabilizes the traction carriage embedded in the recess. It is particularly advantageous that the damping device, which is formed in particular as a component, can be fastened replaceably on the respective fixing blocks by means of detachable closure caps, so that the damping device can be easily replaced with a new damping device in the event of excessive wear. Device replacement.

The above-mentioned object is achieved in a mining plow in that the mining plow comprises a plow body which is equipped with planing blades for both directions of movement of the plow and underneath which accommodates a traction machine which can be connected to the plow chain. The carriage is provided with a recess defined by opposing stop surfaces pointing in the direction of movement that cooperate with stop surfaces on the traction carriage, wherein each opposing stop surface preferably includes a replaceable backing plate for A mechanical damping device integrated in the traction carriage cooperates. In the mining plow according to the invention, each opposing stop surface comprises or consists of a backing plate, the backing plate can be designed with respect to the choice of material and the form of construction to be particularly beneficial to the damping device in the traction slide and, if necessary, to each stop. face interaction. If the pads are worn due to the small contact surface between the damping device and the respective pad, it is sufficient to replace the pads. For this purpose it is particularly advantageous if the backing plates are formed by stops which can be mounted or removed from the face-side front of the mining plow and which can be fastened to the plow body on the filling-side wall section. It is also advantageous if, in the assembled state, the end faces of the wall parts protrude beyond the end faces of the backing plate against the direction of movement and form guide keys which can engage in recesses on correspondingly formed guide carriages.

Description of drawings

Further advantages and embodiments of the traction carriage according to the invention and of a mining plow for this purpose emerge from the following description of a simplified embodiment shown in the drawings. in:

Figure 1 is a perspective view of the front of the mining plow of the present invention, including the traction slide removed and the backing plate removed on one side;

Figure 2 is a perspective view of the traction slide of the present invention, partially folded;

The side view of the traction slide of Fig. 3 Fig. 2;

Fig. 4 is a sectional view taken along line IV-IV in Fig. 3;

Figure 5 is a perspective view of a damping body for a preferred application, partly disassembled.

Detailed ways

Fig. 1 shows a mining plow or coal plow 1 for underground mining operations, which has a preferably single-piece plow body 2 in a manner known per se, which utilizes the upper surface of the filling side during production use. The guide claw 3 and the guide hook 4 below are guided on another planer guide, not shown, which is mounted on a returnable face conveyor, also not shown. Mining plow 1, which is drawn by means of a plow chain, not shown, in two possible directions of movement parallel to the plow guide, with planers 5 for both directions of movement, which are implemented in the illustrated embodiment of the mining plow 1 In the example, it is replaceably arranged on each knife holder 7 which is pivotable and connected via a push rod 6 . A height-adjustable upper layer of knife rests 8 is installed between the two knife rests 7 in the center, which includes a set of planers 9 for each direction of movement. Below the upper knife rest 8, in the center between the two swingable knife rests 7, the planer body 2 is provided with a downwardly open recess 10, in which a traction slide 20 is inserted as a driving force acting on the planer body 2 in a pushing manner. device so that the plow body 2 and thus the entire mining plow 1 always move parallel to the plow guide in one of the two moving directions and excavate coal or other minerals on the working face using the plows 5, 9 advancing in the moving direction . For this purpose, the exchangeable traction carriage 20 has, on the rear side of the traction carriage body 21 , individual hook-shaped chain clamps 22 as connection elements, in which the end links of the associated chain strands of the planer chain can be suspended. The traction carriage, which engages with slight movement play in the recess 10 of the planer body 2 , is usually pushed towards the side of the recess 10 by means of the side areas of the front parts 24 of the traction carriage 20 which protrude above the level of the recess 10 . Transmits the tractive force of the planer chain. The side faces of the recesses 10 thus form opposing stop surfaces 11 for the respective stop surfaces 23 of the associated traction slide 20 which come into contact with the planer body 2 .

Unlike the prior art, in the mining plow 1 according to the invention the opposing stop surfaces 11 on the plow bodies 2 are not to the greatest extent formed by the one-piece plow body 2 itself but by backing plates 12, each backing plate being formed by means of On a rear wall part 14 of the planer body 2 the fastening screws 13 are screwed exchangeably. As can be seen very well in FIG. 1 , the backing plates 12 are here constituted as stops, which are screwed from the front of the mining face side of the mining plow 1 onto fastening screws 13 passing through the wall section 14 and can then be moved by means of The fixing nut 15 is fixedly mounted on the wall part 14 . In this case the wall section 14 protrudes several centimeters beyond the end face of the backing plate 12 delimiting the recess 10 and comprises a wall strip with a constant cross-section substantially beyond this height. In the assembled state of the traction carriage 20 and the planer body 2, the protruding area of the wall strip forms a guide key 16, which engages in a recess 25 of the stop surface 23 of the associated traction carriage 20 in order to vertically Guide and stabilize the traction carriage 20 in the direction of movement.

The construction of the traction carriage 20 will now first be described with reference to FIGS. 2 to 5 . From FIGS. 2 and 3, it is evident that the front portion 24 of the substantially one-piece traction slide 20 is significantly higher than the hook-shaped clamping plate 22 on the back side of the traction slide body 21, wherein between the hook-shaped clamping plate 22 and the front portion 24 A guide groove 46 with a nearly rectangular shape is formed between them, in which a guide beam on the plow guide is embedded in the operating state, so that the traction slide is guided on the plow guide independently of the plow body of the mining plow Seat 20. The front part 24 of the more robustly formed traction carriage 20 comprises two spaced-apart lateral fastening blocks 26 which are rigidly connected to each other by means of the underside part of the traction carriage body 21 and which are each directed in the direction of movement. The outer faces form the respective stop surfaces 23 of the traction carriage 20 . Each stop surface 23 is provided with the indentation groove 25 that extends vertically with constant cross-section, in which in the assembled state is embedded in the guide key (16, Fig. 1).

According to the invention, the traction carriage 20 is provided with a damping device 30 , by means of which the contact surfaces between the traction carriage and the mining plow are prevented from colliding with each other in an impact-like manner, especially when the direction of movement changes and in similar operating states. In the shown embodiment, the buffer device 30 comprises a powerful rod 31 as a buffer body whose overall length is greater than the distance between the stop surfaces 23 on the traction carriage 20 which are far away from each other, whereby the rod ends of the rod 31 40 protrudes on both sides by a predetermined dimension Δx of the side faces forming the stop surface 23 by several millimeters. The continuous, one-piece rod 31 is preferably mounted such that this dimension Δx results as an overhang on the end faces or stop faces 23 of the traction carriage 20 . The rod 31 has a step 32 that increases the diameter of the rod 31 at the center, on which the retaining rings 33 are connected on both sides, and each retaining ring constitutes a fixing ring for a plurality of disc spring groups 34 for one of the two moving directions respectively. The stoppers and disc spring sets are alternately arranged on the rod 31 . In the exemplary embodiment shown, four disc spring sets 34 are provided for each direction of movement, wherein each disc spring set 34 in turn comprises five disc springs and all the disc springs have the same spring constant. The middle part of the rod 31 is housed together with the step 32, the retaining rings 33 and the disc spring groups 34 against external influences in a cylindrical housing 36 on which closing rings 37 are fastened on both sides. Each closing ring 37 is provided with a plurality of receiving grooves in its inner hole, wherein a rod seal can be embedded in the first receiving groove 38 and an anti-contamination ring can be embedded in the second receiving groove 39, so as to completely prevent dirt into a disc spring provided inside the housing 36 . The two closed rings 37 simultaneously form guide elements for the rod ends 40 of the rod 31 , wherein the rod ends 40 are inserted into the through-shaped groove-shaped recesses 27 of the fastening block 26 and only have their end faces 35 and the overhang Δx within Both sides protrude from the fixing block 26 .

The damping device 30 provided with an elastically mounted rod 31 forms a structural unit which can be mounted on the traction carriage 20 or removed as a structural unit from the traction carriage 20 with little installation time and which can be replaced by another damping device 30 . For installation or dismounting, configure a closure cover 28 for each fixed block 26, its end face 29 moves backward relative to the stop surface 23 of the fixed block 26 along the moving direction and can be screwed on the corresponding fixed block 26 by means of each fixing bolt 48 superior. The joint surface between the fixed block 26 and the closure cover 28 bisects the cylindrical guide of the rod end 40 of the rod 31 and the closure cover 28 has a semi-cylindrical groove 42 on its inner face 41 which corresponds to the groove-shaped groove 42 on the fixed block 26. The recesses 27 together form a cylindrical guide for the rod end 40 of the rod 31 . Two fixed blocks 26 simultaneously form the support of the damping device 30 in the direction of movement, because the closure rings 37 are substantially form-locked in the cup-shaped grooves 43, which are open only to the closure cover 28 and are open on the other side. The cushioning device can be inserted when the closure cap 28 is removed.

According to the selection of the spring constant and the number of the disc springs of the disc spring group 34, the damping device 30 can, for example, play a buffering role immediately after a change of direction, that is, until the disc springs of the disc spring group 34 allow the rod 31 to move oppositely due to the resulting force. The direction of movement is shifted and through a displacement into the initial position by the storage of the restoring force for the return of the rod 31 until the excess Δx is exhausted so that the end face 35 of the rod 31 is flush with the stop face 23 and thus belongs to the fixed The end faces of the blocks 26 bear directly against the end faces of the associated backing plates as stop faces. However, the restoring force of the damping system can also be dimensioned in such a way that an excess of the end face 35 is retained on the rod end 40 of the rod 31 substantially in all occurring operating states, thereby reducing the impact during the movement of the mining plow. Force transmission is essentially only to the contact area between the rod end face 35 and the backing plate 12 .

Many modifications can be drawn from the above description for the skilled person, and they should be included in the protection scope of the claims. The number of disc spring groups and the number of disc springs used by each disc spring group can be matched or changed according to the weight of the planer and according to geological conditions. Instead of a rod, other damping devices can also be used, including hydraulic damping devices, although a damping system by means of spring force would be preferred for underground mining applications. Instead of a continuous rod acting in both directions of movement, it is also possible to use two rods, each of which is inserted, for example, directly into one of the fixing blocks and creates a restoring force and damping system by means of disc springs arranged in a housing .

Claims (15)

1. the traction slide that is used for the exploiting planer of down-hole, comprise a traction slide seat body that can be embedded in the recess on the planer body, this traction slide seat body has one and has a front portion in order to the connector of fixing planer chain and in the front of this direction recess in the back of a direction recess, each end of the sensing moving direction of this front portion constitutes stop surface, in order to the recess of planer body in the effect of matching of relative stop surface; It is characterized in that in conjunction with a buffer (30), this buffer is in two moving directions buffering ground and the affiliated relative stop surface effect of matching in the front portion (24) of traction slide (20).

2. according to the described traction slide of claim 1, it is characterized in that buffer (30) has one and exceed the buffer body that restoring force each stop surface (23), that can overcome a buffer system moves at least under original state.

3. according to the described traction slide of claim 2, it is characterized in that buffer system has at least one dish spring group (34) for each moving direction.

4. according to claim 2 or 3 described traction slides, it is characterized in that buffer body is made of a bar (31), its length greater than each stop surface (23) each other spacing and have the fixed stop that at least one is used for a dishful of spring group (34).

5. according to the described traction slide of claim 4, it is characterized in that, the rod end surface outfit unworn liner of bar or sclerosis.

6. according to the described traction slide of claim 3, it is characterized in that, a plurality of dish spring groups (34) are set for each moving direction.

7. according to the described traction slide of claim 1, it is characterized in that, buffer (30) comprises that one can embed the member in the front portion (24) replaceably, this member have a bar (31), one by bar pass in order to the housing (36) that holds dish spring group (34) and each closed-loop (37) that is connected in housing (36) of passing by each rod end (40).

8. according to the described traction slide of claim 7, it is characterized in that each closed-loop (37) hole within it is provided with the holding tank (38,39) that at least one is used for rod seal and/or is used for an antifouling ring.

9. according to the described traction slide of claim 1, it is characterized in that anterior (24) have two via the traction rigidly connected fixed block of slide seat body (21) (26), two fixed blocks constitute each stop surface (23) with the surface that it points to moving direction.

10. according to the described traction slide of claim 9, it is characterized in that, in each stop surface (23), constitute an indentation groove (25), be used for the feather key on exploiting planer.

11., it is characterized in that buffer (30) can be fixed on each fixed block (26) by means of dismountable closing cap (28) according to claim 9 or 10 described traction slides.

12. be used for the exploiting planer of down-hole mining, comprise a planer body (2), this planer body is that two moving directions of planer are equipped with planing tool (5,9) and are provided with a recess (10) in order to hold a traction slide that can be connected on the planer chain in its lower section, this recess by point to moving direction, with the traction slide on each stop surface each relative stop surface (11) that acts on that matches limit; It is characterized in that each relative stop surface (11) comprises removable backing plate (12), in order to interact with the buffer (30) that is incorporated in the traction slide (20).

13., it is characterized in that each backing plate (12) is made of block according to the described exploiting planer of claim 12, described block can install and can be fixed on from the front of the coal face side of exploiting planer on the planer body (2) on each wall part (14) of filling side.

14., it is characterized in that the end face of each wall part (14) exceeds the end face of each backing plate (12) and is configured for drawing the feather key (16) of slide in contrast to moving direction according to the described exploiting planer of claim 13 under assembled state.

15., it is characterized in that draw slide (20) and embed in the recess (10), this traction slide is by one of claim 1 to 11 formation according to one of claim 12 to 14 described exploiting planer.

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