WO2000031438A2 - Kettenflachschloss - Google Patents
Kettenflachschloss Download PDFInfo
- Publication number
- WO2000031438A2 WO2000031438A2 PCT/DE1999/003703 DE9903703W WO0031438A2 WO 2000031438 A2 WO2000031438 A2 WO 2000031438A2 DE 9903703 W DE9903703 W DE 9903703W WO 0031438 A2 WO0031438 A2 WO 0031438A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lock according
- chain lock
- chain
- shaped
- tooth
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
- F16G15/02—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes for fastening more or less permanently
Definitions
- the invention relates to a chain lock for link chains, in particular for link chains used in underground mining and tunnel construction, with two U-shaped lock halves and a locking element which is fitted in the closing joint between the alternately on the outer or inner legs with interlocking holding teeth in the closed state Lock halves can be inserted.
- Such a chain lock is known from DE-GM 81 25 894 but also DE-PS 34 44 008 and DE-GM 93 14 756.
- the two lock halves are locked against one another after the holding teeth have been inserted into one another by the inserted locking element, so that they cannot inadvertently slide or fall apart.
- Adequate securing against locking is to be ensured, for example, by a specially designed locking element which, after being pushed in via springs or other locking parts, is pressed apart such that these surfaces press against the curves of the chain links used or connected to one another.
- problems can arise with such resilient locking elements, particularly in rough underground operation, especially if the resilient parts are damaged in any way.
- the invention is based on the object of releasing the holding tooth pairs. creating and lower tension concentrations in the root ground securing chain lock.
- the object is achieved according to the invention in that the closing joint is largely closed and in that the two mutually facing sides of the inner legs of the lock halves interlock with one another in the area of the locking element designed as a central piece and are fitted with a central piece.
- the closing joint is largely closed and in that the two mutually facing sides of the inner legs of the lock halves interlock with one another in the area of the locking element designed as a central piece and are fitted with a central piece.
- the closing joint between the two lock halves runs diagonally and diagonally through the center of the halves and thus also of the middle piece and in this way engages tangentially on the semicircular chain eyelet of each lock half.
- Effective additional teeth are thus created in the area of the center piece, which are also designed like hooks and act so that they can advantageously be fully used for the transmission of tractive force. It has already been explained above that, in particular, harmful stress concentrations in the root canal are avoided. Rather, this area is advantageously included in the overall function of the chain lock.
- cutouts are alternately provided for the closing joint. These recesses are arranged on both sides of the middle piece and facilitate assembly, they are expediently arranged symmetrically with respect to one another and then, after the middle piece has been driven out, allow the hook tooth of the adjacent inner leg to be immersed, so that it is easier to take the chain lock apart.
- the easier assembly and disassembly is given, in particular, if the height of the cutouts is set or selected approximately at the depth of the holding teeth.
- the lock halves are simply moved apart or against each other accordingly, so that they can then be taken apart.
- the middle piece which ensures the fixation of the two lock halves, can have different shapes, the simplest shape being that of a corresponding bolt.
- the invention further provides that the center piece has the shape of a rectangular rod. Both versions allow simple driving in and fixing within the chain lock and also corresponding assembly, whereby, as mentioned, the cutouts can additionally facilitate assembly.
- center piece is designed as a Z-shaped component and the closing joint is adapted to the latter, the core being designed to run orthogonally to the closing joint. Due to such a design, a root height of the inner leg can be increased in comparison to other embodiments, with several options for securing the center piece, various solutions being discussed further below.
- the invention also provides that the middle piece has the shape of a step block, which enables a further increase in the total tooth thickness.
- an embodiment is expedient in which two stop bushes are used as the center piece, the flanges of which have a hexagon shape and a cylinder head screw and a hexagon nut opposite can be inserted in the center bore.
- the two stop bushes can be used relatively easily, whereby they have a center hole through which the cylinder head screw can be easily screwed in so that it is secured itself and at the same time fixes the two parts of the center piece against each other, so that the chain lock can safely fall apart avoid.
- Another possibility is to use a single stop bush instead of the two stop bushes, which is used in combination with a cover nut, whereby a cylinder head screw can be inserted through the center hole so that it fixes the center piece with the help of the cover nut.
- the screw connection is arranged so that it is not stressed by the forces that occur, so that disassembly is still possible after a long period of use.
- Another version of the middle piece provides that two tapered bushes with a central bore serve as the middle piece, into which a cylinder head screw or hexagon nut can be inserted.
- the advantage of these taper bushes is that they also have a clamping effect when they are tightened by means of the cylinder head screw, so that the locking of the center piece in the chain lock is promoted.
- the cylinder head screw which ultimately only fixes the taper bushes, ensures that the middle piece is loosened because after unscrewing the cylinder head screw, the two taper bushes can be driven apart by suitable tools to open the chain lock.
- a stepped block and collar plates with a central bore serve as the center piece, into which a countersunk rivet can be inserted.
- the countersunk rivet can also be used with the taper bushes or middle pieces of a different design, the embodiment described with the step block having the advantage that a favorable overall tooth thickness can also be achieved at the same time.
- this area is also included in the tractive force transmission, whereby according to an expedient development of the invention, the additional retaining teeth formed in the area of the middle piece have an average thickness of 16-18 mm.
- Appropriate shaping for the additional holding teeth in the area of the center piece ultimately ensures that this area can be fully factored into the power transmission and also performs this function fully, so that a overall, much more even loading of the chain lock can be achieved.
- the back of the outer leg in the region of the two front teeth can advantageously be made higher and the bending cross-section can thus be larger if, according to the invention, the head part of the holding teeth of the inner leg is of the same bevel as the closing joint.
- the teeth are still of the same height and allow easy dismantling and assembly of the chain lock if the middle piece is handled accordingly.
- a further reinforcement of the outer leg back and the tooth hook of the inner leg can be achieved if the holding teeth of the inner and outer legs are shaped to form saw teeth. This may even result in advantages in terms of manufacturing and assembly, in particular because the teeth can be largely kept the same and designed. Here, too, a secure transmission of the forces is achieved, ultimately regardless of the shape of the center piece.
- the number of teeth in each pair of holding teeth can be reduced from three to two, resulting in a total tooth thickness of 30 mm per leg. It is advantageous according to the invention if the inner legs are formed with their closing surfaces lying on top of one another at an angle of deflection of approximately 24.4 ° obliquely to the pulling direction. As a result, the hook-shaped tooth encompasses the round or angular center piece by an amount of 6 mm and the total tooth thickness increases by 13 mm and 48 mm, for example. Furthermore, the outer leg can be made shorter, the shear force acting on the center piece being reduced by approximately 9% due to the inclined plane. The root cross-section of the inner leg becomes considerably thicker.
- each pair of tooth holders has a holding tooth in addition to the central part that supports it.
- the number of teeth can thus be reduced from three to one, which means that the outer leg can be shortened even more and, above all, the error rate in the load share can be significantly reduced.
- the outer leg is formed under the inner leg with a nose.
- one embodiment of the center piece is a Z-shaped component, in which case it is additionally provided that the core of the Z-shaped component is diamond-shaped or parallelogram-shaped, the side surfaces being perpendicular to the right axis and the top surfaces are formed parallel to the closing joint.
- the foot thickness of the holding tooth increases significantly, and this in turn is a great advantage for the overall uniform power transmission.
- the back of the additional retaining tooth created in the area of the center piece runs at right angles to the closing joint.
- the respective U-bend of the chain link to be connected is thus securely stored within the chain eyelet without negative friction forces possibly occurring. Rather, there is a more or less linear contact, which has an advantageous wear-reducing effect.
- a jamming-free assembly of the U-shaped lock halves is achieved in that the mutually and point-symmetrical recesses are provided.
- a nose-shaped projection engaging in a corresponding recess in the inner leg is arranged at the end of the outer leg and is arranged and provided on the outer leg.
- the chain hoops are each provided with an anti-locking lug.
- the corresponding anti-locking lugs are designed so that the chain lock can only move to a limited extent in the adjacent chain links. Additional holding teeth are also provided here, this being supported, for example, by a Z-shaped middle piece. Without special training of the center piece, the security against locking can be increased in an area where no security against locking is provided in the prior art.
- the Corresponding anti-locking noses can also be provided in the manufacture of the chain lock or the lock halves, so that a substantial additional effort does not occur.
- a high level of locking security is achieved, in particular, if the anti-locking nose is designed to provide a pivoting zone of around 40% that is free of locking and for this purpose preferably extends over 45 mm.
- a favorable central part that transmits the forces is a cross section that is parallelogram-like.
- the center piece which, as usual, via a lock nut or the like. is fixed, the corresponding additional holding teeth can absorb and transmit the necessary forces exactly in the longitudinal direction.
- the anti-locking lugs are provided on both sides. A monodented pair of retaining teeth can thus be advantageously implemented.
- the inner legs can be equipped with locking bumps and the outer legs with correspondingly designed locking grooves
- the center piece having a long support base or can be designed differently and, as is known, screwed with locknuts.
- a one-, two- and three-tooth pair training can be realized.
- the center piece can be the parallelogram-like, the Z-shaped or just that which has a long support base and where the fixing takes place with a central screw or shrink connection without the need for essential tools .
- the long support base also has the advantage that it can be designed and extended so that the swivel range of the adjacent chain links can be limited accordingly.
- the middle piece runs obliquely and accordingly parallel to the closing joint and also to the retaining teeth.
- the chain eyelet even further to the shape of the adjacent chain link, which can be achieved in that the holding tooth of the inner leg near the eyelet is reinforced and curved.
- the chain lock can be completed and assembled quickly and accurately.
- the sawtooth-shaped holding teeth and the center piece have the same or a different inclination.
- saw teeth and central part and toothing can be inclined at 16 ° or at 12 °, the tooth root thickness of the tooth near the eye being 16 mm being 4 mm thicker. If the toothing and the middle section are inclined at 12 ° and a correspondingly thinned middle section is used, a uniform 24 mm thick inner leg hub is achieved, which is for example around 4 mm thicker.
- the center piece and the sawtooth-shaped retaining teeth are designed to run horizontally in the pulling direction, it being particularly advantageous if the center piece is provided on both sides with saw teeth which are designed to be load-bearing and engage in the inner legs.
- This special design of the center piece then again results in the clear additional toothing in the area of the center piece and thus the advantageously uniform transmission of the forces that occur.
- assembly is easily possible if the retaining teeth have no undercut.
- the holding teeth have undercut teeth, which can also be advantageously achieved, for example, in the case of a bidentate pair of holding teeth.
- the anti-locking lugs are provided on the chain hoists and an additional locking device is provided at the ends of the inner and outer legs.
- This undercut of the holding teeth creates an advantageous claw-like connection which has a retracting effect and counteracts any bends.
- the overall shape of the sawtooth also has advantages over conventional lock teeth in that a stronger tooth shape can be achieved with a much thicker tooth base.
- These holding teeth can be manufactured with profile milling cutters, so that manufacturing is made easier.
- the assembly of the chain lock is ultimately also simplified by the conical shape of the tooth.
- the described embodiment whether with undercut toothing or without such toothing, can be further improved in the direction of freedom from clinging, in that the outer retaining teeth have an oblique tongue and groove lock running parallel to the tooth inclination.
- the freedom of movement of the suspended chain links is limited to the main functions specified by the conveyor or planer operation, so that operational safety is increased and the use of anti-locking bars, which is anyway ineffective due to the zip effect, can be dispensed with.
- a further possibility of stabilizing chain locks of this type in the region of the ends of the legs is achieved according to the invention in that the outer retaining teeth are designed to result in a fork lock.
- the long outer legs are therefore advantageous at their ends against lateral displacement and additionally secured.
- the fork locks secured with a shear bolt according to the present invention secure against bending of the fork lock.
- This shear bolt is Normally hardly loaded, since the respective bidentate pair of holding teeth connecting the inner and outer legs is preferably equipped with so-called saw teeth at a tooth root plane inclined at 4 °.
- a horizontal center piece is used, which is secured by locknuts and in which the locking lugs are provided on the chain hoists.
- the fork lock with the shear bolts allows reinforced outer legs at the bow transition.
- a continuation is used in which the middle piece in the outer area is designed with an anti-locking collar.
- This collar guides the respective adjacent chain link in the chain lock in such a way that the movement of the adjacent chain link is precisely specified and restricted in each case.
- the easing of the assembly is primarily a training in which the center piece with a long support base is formed in two parts and is secured by one or two through screws.
- the through bolts are 2 socket head screws with square nuts.
- Other connection units are also conceivable.
- securing the outer and inner legs is that in which a so-called securing lug is provided at the end of the outer leg and the inner leg of each lock half, which is arranged and designed so as to engage in a fork-shaped recess in the bow attachment of the respectively adjacent lock half.
- securing lugs are located in the eyelet area, preferably in addition to the securing systems provided on the outer sides of the leg ends.
- Various designs have been pointed out further above, which are provided for absorbing separation forces but also for optimal transmission of the main tensile force by special design of the center piece and the associated ends of the legs.
- the long legs of the Z-shaped component are convexly curved at the end in plan view and, together with a groove assigned to the inner leg, are formed to form a channel into which an arcuate securing element can be driven.
- an advantageous, form-fitting connection is achieved on the inner legs, not only of the securing elements, but above all of the middle piece designed as a step block, so that a loss of the middle piece, which jeopardizes operational safety, occurs, for example, when the conveyor chain belt runs under the rotating at high speed and thereby crushing the stone and coal of the impact roller of a continuous crusher or when breathing and swinging the spring-like pulsating conveyor chain, as well as in the case of jerky stress and violent shocks and last but not least under the pile at the transfer stations while running over the hard and rotating pieces of rock there sprockets dragging in the pockets and causing considerable complications is excluded.
- the ends of the inner legs in particular in the case of a design designed as a double retaining tooth, have a chain ring of the adjacent lock half which is approximately circular and delimits an anti-tamper collar.
- the anti-stripping collar is expediently formed by a hollow-round envelope curve and thus two barrier walls. The adjacent chain link is thus optimally secured in the chain lock.
- the effect of the barrier walls is further enhanced by restricting the hinge speed of the chain eyelet from 67 ° to 40 ° by a crescent-shaped bow thickening of the chain lock assigned to the groove width of the chain wheel, which means the use of six-toothed sprockets, which are the smallest size in the category of these robust mining chains, are guaranteed.
- the chain bows have a primarily crescent-shaped bow thickening. The risk of getting stuck is further limited and the strength in the respective joint area of the chain lock is increased in the form of an allowance for wear.
- the bow thickening can even be configured up to a profiled anti-locking nose with the effective information cited there.
- the retaining tooth of the outer leg has a central groove running continuously in the longitudinal direction of the lock and the associated tooth gap of the inner leg has a correspondingly shaped tongue. Lateral and torsional forces can be safely controlled.
- This tongue and groove design is advantageously protected between the paired outer and inner legs, in that the tooth of the outer leg has a groove running in the longitudinal direction of the chain lock in the middle of its width. The corresponding tongue can engage in this groove.
- the spring is interchangeably connected to the inner leg, which for the first time creates an extremely resistant nesting of the two lock halves against lateral forces for ineffective concave / convex centering, as is required in particular in crusher conveyors where the toothed chain locks Above all in a horizontal position, the impact force of the crusher rollers charged with high kenetic energy can blow them up and cause cost-intensive malfunctions.
- Another advantage is that by eliminating the nose / fork locking a tooth thickness of the monodentate pair of holding teeth can be increased significantly and by the tooth thickness and the connection with the short, compact outer leg gets an extremely robust character.
- a fixation namely a permanent fixation of the center piece, is achieved in particular in that the Z-shaped center piece, for example, is designed as a step block and between it and the inner leg having a central groove, a securing element with a correspondingly shaped projection can be driven in, the ends of the securing element toward the step block are designed to be bendable.
- the securing piece encompasses the step block in a lock-tight and flush manner, the constriction of the legs being designed to be easy to dismantle by providing space for attaching a chisel or other explosive tool to the bent ends of the securing element.
- the securing element has a finished head shape on one side, is split like a cotter pin on the opposite side and has legs that can be bent in both directions.
- the two securing elements can advantageously be inserted into the lock connection after the middle piece has been inserted, in that the securing element, which is shaped as a rod with a square cross section and has a head shape that is already finished on one side, is bent at the other end on its split-pin-slotted legs to achieve the shape of the head as on the opposite side.
- bent legs are flush and protected in the recesses of the lock halves and the center piece, with any blind processes during assembly, like almost all tooth locks in the form of hidden spring clips, snap rings, hollow spring cylinders and balls for snap and bayonet locks cling, are eliminated and the associated imponderables can no longer have an effect.
- a wedge securing of the middle piece is also possible, the invention providing for this that the middle piece is fixed via two opposing transverse wedges, which preferably have a tightening of tg 1:25 to tg 1:100.
- the center piece is thus secured for frictional engagement by the two opposing cross sections, which, on the assumption and requirement that they seldom need to be loosened and retightened, represent an effective tension connection.
- the invention is characterized in particular by the fact that hook-shaped teeth are created in the area of the middle piece on the respective inner legs, which engage around the middle piece and also use it to transmit the tensile force. This relieves the rest of the holding teeth between the inner and outer legs. It is particularly advantageous that harmful stress concentrations in the root of the two inner legs can be reduced. In addition, depending on the training, the outer legs can be shortened and the entire chain lock can thus be made more stable.
- the center piece is fixed by special training between the two legs of the U-shaped lock halves so that it can withstand the harsh conditions underground and allows safe disassembly even after long periods of inactivity.
- the shape of the center piece can be adapted to the respective application, whereby it is important that the appropriate screw connections always give the option of loosening the respective center pieces according to plan and without great effort, in order to disassemble or also mount the locks.
- FIG. 1 shows an enlarged illustration of a chain flat lock in longitudinal section
- FIG. 2 shows a reduced representation of the flat chain lock in the same embodiment
- FIG. 3 shows the chain flat lock according to FIG. 2 in cross section
- FIG. 4 shows a chain flat lock of an embodiment with modified retaining teeth
- FIG. 5 shows a cross section through the chain flat lock according to FIG. 4,
- FIG. 6 shows a chain flat lock with saw toothing in longitudinal section
- FIG. 7 the flat chain lock according to FIG. 6 in cross section
- FIG. 8 a chain flat lock with a reduced number of teeth
- FIG. 9 shows a chain flat lock with a step block as the center piece
- FIG. 10 shows a cross section through the chain flat lock according to FIG. 9,
- FIG. 11 shows a chain flat lock with a further reduced number of teeth in longitudinal section
- FIG. 12 shows a chain flat lock simplified compared to the embodiment according to FIG. 11,
- FIG. 13 a flat chain lock with emphasized recesses on both sides of the center piece
- FIG. 14 shows a chain flat lock with cutouts on both sides but with corresponding filler parts which are attached to the center piece
- FIG. 15 shows a chain flat lock with a Z-shaped middle piece with a square core running orthogonally to the closing joint
- FIG. 16 shows a chain flat lock with a Z-shaped middle piece, in which the middle piece is diamond-shaped or parallelogram-shaped,
- FIG. 18 longitudinal section through the chain lock according to FIG. 17,
- FIG. 19 chain lock according to FIG. 17 with a shortened outer leg
- FIG. 20 chain lock with a parallelogram-like center piece
- FIG. 21 cross section through the chain lock according to FIG. 20,
- FIG. 22 chain lock with multiple pair of retaining teeth with anti-locking lugs
- FIG. 23 cross section through the chain lock according to FIG. 22
- FIG. 24 chain lock with multiple holding teeth and an extended support base for the middle part
- FIG. 25 cross section of the chain lock according to FIG. 24 with the lock nut calked on both sides
- FIG. 26 cross section according to FIG. 25, but with a lock nut caulked on one side
- FIG. 28 chain lock according to FIG. 27, but inclined at 12 °
- FIG. 29 chain lock according to FIG. 27 with a thickened central part
- FIG. 31 chain lock according to FIG. 30 but with a central part equipped with saw teeth
- FIG. 35 cross section through the chain lock according to FIG. 34,
- FIG. 36 cross section of a lock thickness of 41 mm or
- FIG. 37 further cross sections of the chain lock in the bow area
- FIG. 38 chain lock according to FIG. 32 without an undercut tooth base
- FIG. 40 chain lock according to FIG. 39 with a two-part center piece
- FIG. 41 longitudinal section through the chain lock according to FIG. 40 with a through screw
- FIG. 42 longitudinal section through the chain lock according to FIG. 40 with two through screws
- FIG. 43 cross section of the chain lock according to FIG. 40 with shear bolts
- FIG. 44 chain lock with one-toothed pair of retaining teeth with additional type of securing
- FIG. 45 section through the chain lock according to FIG. 44 with
- FIG. 48 section through the chain lock according to FIG. 47,
- FIG. 49 section through the chain lock according to FIG. 47 with a step block secured in a form-fitting manner as the middle piece
- FIG. 50 section of a longitudinal section of the chain lock according to FIG. 44 with anti-locking collar and anti-locking nose
- FIG. 51 chain lock with a different type of securing
- FIG. 52 cross section through the chain lock according to FIG. 51,
- FIG. 53 section through the chain lock according to FIG. 51.
- FIG. 54 another type of securing of the step block in addition to the illustration according to FIG. 53 and FIG. 55 wedge securing for the center piece, reproduced in cross section.
- FIG. 1 shows a chain flat lock 1 that fully corresponds to that shown in FIG. 2.
- This chain flat lock 1 consists of two lock halves 2, 3, which are secured and braced against one another via an interposed locking element 4.
- a closing joint 5 is provided here, which runs centrally through the locking element 4 and in such a way that, in addition to the retaining teeth 10, 11, 12 formed between the outer legs 6, 8 and the inner legs 7, 9, additional teeth in the area of the locking element 4 form or arise.
- FIG. 1 illustrates that here two pairs of holding teeth with three holding teeth 10, 11, 12 per inner and outer legs 6, 7, 8, 9 are realized.
- the total tooth thickness per leg is remarkable, as can be clearly seen in FIG. 1.
- the holding teeth 10, 11, 12 are formed on the respectively facing sides 15, 16 of the inner leg and outer leg 6, 7, 8, 9.
- the locking element 4 which is designed as a middle piece 18, is clearly gripped by the two inner legs 7, 9 of the two lock halves 2, 3 and is also used for the transmission of tensile force.
- This design advantageously results in the aforementioned additional tooth with an average thickness of approximately 20 mm per inner leg 7, 9. This not only increases the total tooth thickness but also relieves the counteraction of this additionally created tooth 52 and significantly reduces harmful stress concentrations.
- Figure 1 illustrates, like Figure 2, that the on both sides of the middle Piece 18 as usual arranged chain eyelets 19, 20 are largely closed due to the special design of the additional retaining tooth 52, recesses 22, 23 remaining on both sides of the central piece 18, at least in this exemplary embodiment, in order to simplify dismantling.
- FIG. 3 shows that here two stop bushes 30, 31 are used as the center piece, the flanges 32 of which are hexagonal in order to favor fixing in the inner legs 7, 9 and to provide security against rotation.
- the stop bushes 30, 31 and the flanges 32 have a central bore 33 into which a hexagon nut 34 is inserted, so that the cylinder head screw 35, which is also used, can be clamped accordingly or the two stop bushes 30, 31 clamped.
- the head part 47 of the inner thigh teeth 10, 11, 12 falls at the same tooth height under the same slope of 24.4 ° as the closing surfaces the chain eyelets 19, 20 towards the rear, as a result of which the back of the outer leg 6, 8 is higher in the region of the two front teeth and thus the bending cross section is reinforced.
- a stop bush 30 with a cover nut 36 into which the cylinder head screw 35 can be screwed is used as the middle piece 18 in order to effectively fix the entire middle piece 18 in the flat chain lock 1.
- FIG. 6 shows a further variant, in which case a saw toothing 48 is realized, by means of which a further reinforcement of the back of the outer leg 6, 8 is achieved. In addition, the tooth hook of the inner leg 7, 9 is reinforced.
- FIG. 7 shows a cross section of the embodiment according to FIG. 6, it being clear that here the middle piece 18 has the shape of two tapered bushes 38, 39, which are connected to one another via the cylinder head screw with the hexagon nut 34 inserted in such a way that they are located within the chain flat lock 1 set and thus ensure a firm connection of the parts of the chain flat lock 1.
- the number of teeth is reduced from 3 to 2 due to the supporting center piece 18.
- the closing surface 49, 50 of the two inner legs 7, 9 lie one above the other at an angle of deflection of 24.4 ° obliquely to the pulling direction, so that the hook-shaped retaining tooth 52 of the pair of teeth 51 can encompass the center piece 18, which is shown here round, even further than that described above Embodiments, whereby the total tooth thickness increases by 13 mm, for example to 48 mm.
- the outer leg 6, 8 can advantageously be shorter and the shear force acting on the middle piece 18 can be reduced.
- the root cross-section of the inner leg 7, 9 becomes considerably thicker.
- FIG. 8 shows particularly clearly that here the closing joint 5 runs virtually continuously and touches both chain eyelets 19, 20 tangentially. There is no need for any locking devices here because the chain links to be connected are securely stored in the flat chain lock 1.
- the additional teeth created are identified with 44, 45 as additional holding teeth.
- FIG. 9 also shows a special embodiment in that a step block 28 is used as a supporting element.
- the connecting part or fixing part for the middle piece 18 runs centrally through the core 27.
- a collar plate 44 is provided, in which the countersunk rivet 41 can be fixed.
- the securing can also be done by screwing or the riveting can be realized with a different shape of the center piece 18.
- FIG. 10 shows a corresponding embodiment with the collar plates 40 and the countersunk rivet 41, in which the middle piece 18 is also shown in cross section.
- FIG. 11 reproducing an embodiment with a retaining tooth 10, reference number 51 being selected here in order to clarify that it is nevertheless a pair of teeth.
- the outer leg 6, 8 becomes even shorter and, above all, the error rate in the bearing portion is considerably reduced.
- a special design of the outer legs 6, 8 acts against a deflection against any separating forces, which here engages under the inner leg 7, 9 with a nose 53.
- the securing nose or nose 53 is dispensed with in the embodiment according to FIG. Due to the additional holding tooth 44, 45 of the inner leg 7, 9 acting on the center piece 18, the total tooth thickness of the known designs is achieved with 37 mm with significantly fewer complications in terms of fit and supporting part.
- the head surface 57 is curved here, so that it firmly encloses the U-shaped leg of the chain link to be connected.
- a jam-free assembly of the U-shaped lock halves 2, 3 is achieved if two recesses 22, 23 are formed in the area of the closing joint 5 of the two inner legs 7, 9 mutually and point-symmetrically to one another. This has already been pointed out earlier. After driving out the center piece 18, the hook-shaped additional holding teeth 44, 45 of the adjacent inner legs 7, 9 are pressed into these recesses 22, 23. It is easier to separate the two lock halves 2, 3 from one another. However, the back of the hook tooth or additional holding tooth 44, 45 runs at right angles to the closing joint 5 in order to get past the suspended chain link during assembly. An end-side nose-shaped projection 62 of the outer leg 6, 8 engages in a fork-shaped recess 61 of the inner leg 7, 9 against transverse displacement.
- the embodiment according to FIG. 14 provides a filling part 54, 54 'in this area or fills the recesses 22, 23.
- a type of Z-shaped middle piece 18 is produced, but this does not have the effect as described with reference to the following figures.
- the middle piece 18 is designed as a Z-shaped component 26.
- the square core 27 runs orthogonally to the closing joint 5.
- the root height of the inner leg 7, 9 increases in comparison with the previous variants.
- the middle piece 18 is secured here, as shown schematically, by riveting.
- the embodiment according to FIG. 16 shows an embodiment in which the supporting core 27 of the middle piece 18 is diamond-shaped or parallelelogram-shaped, the side surfaces 55 contacting the additional retaining tooth 44, 45 of the inner leg 7, 9 being rectangular stand to the right axis 56 of the flat chain lock 1. This increases the foot thickness of the retaining tooth from 15 mm to 20 mm.
- the back of the additional retaining tooth 44, 45 is designated 59.
- FIG. 17 shows a chain flat lock 1, which consists of two lock halves 2, 3, which are secured and braced against one another via an interposed locking element 4.
- a locking plate 5 is provided here, which runs centrally through the locking element 4 and in such a way that, in addition to the retaining teeth 10, 11, 12 formed between the outer legs 6, 8 and the inner legs 7, 9, additional teeth in the area of the locking element 4 form or arise.
- the tooth gaps between the holding teeth 10, 11, 12 are designated 13 and 14.
- FIG. 17 illustrates that a pair of holding teeth with holding teeth 10 per inner and outer leg 6, 7, 8, 9 is realized here.
- the total tooth thickness per leg is considerable, additional holding tooth pairs 44, 45 being additionally formed on the sides 15, 16 of the inner leg and outer leg 6, 7, 8, 9 facing each.
- a Z-shaped component 26 is used in the center, which serves as a middle piece 18 and ensures that the adjacent chain links engaging in the chain eyelets 19, 20 in the chain lock or Flat chain lock 1 are securely stored and guided.
- the core 27 of the Z-shaped component 26 is designed and arranged in such a way that the additional holding tooth pairs 44, 45 already mentioned result, the legs 29 being able to be designed to be correspondingly long.
- the Z-shaped component 26 can also have the overall shape of a step block 28.
- the chain brackets 65, 66 are each provided with an anti-locking nose 67, which results in an effective anti-locking in the main pulling direction. In the swivel range of 39 ° when using only the anti-locking nose 67, a reduction in the locking of 28% is ensured in the bend range of 140 °.
- the head surfaces 57 of the holding teeth 10, 11, 12 are designed to be somewhat curved, in order to additionally counteract the risk of getting stuck.
- a monodentate pair of retaining teeth 49 is realized both in FIG. 17 and in FIG. 18 and FIG. 19, additional locking bumps 70 and locking groove 71 being provided in order to counteract overloading of the outer legs 6, 8 in this way.
- the tooth thickness is reduced to 22 mm, so that the outer legs 6, 8 can be made shorter by approximately 15 mm.
- the anti-locking lugs which can be seen particularly clearly in FIG. 18, are designated by 67.
- the chain lock 1 according to FIG. 20 is provided with a central piece 18 that is parallelogram-like in cross section.
- the additional retaining tooth pairs 44, 45 thus also result here.
- FIG. 21 illustrates the design of the locking hump 70 and locking groove 71, the middle piece 18 being secured by means of a screw connection which is not explained in more detail here.
- FIGS. 22 to 29 show chain locks 1 with a middle piece 18 having a long support base 72, 73. These middle pieces 18 are also secured with a lock nut 74, as can be seen in FIG. In addition, is after 25 and 26 that the lock nut 74 used is caulked after it has been tightened accordingly. According to FIG. 25, the lock nut 74 is even calked on both sides.
- This type of fixing of the middle piece 18 can therefore also be referred to as a central screw / shrink connection 75.
- This can also be a shrink ring 76 which, as indicated for example in FIG. 23, is shrunk onto the corresponding part of the middle piece 18.
- FIGS. 27, 28 and 29 a central piece 18 is also shown in FIGS. 27, 28 and 29, which is arranged obliquely and in parallel with the holding teeth 10, 11, 12.
- the support base 72, 73 of the middle piece 18 is extended by about 10 mm, according to FIG. 27 a certain inclination is provided.
- the middle part 18 and the saw teeth 10, 11, 12 are inclined at 16 °.
- the inclination is reduced to 12 °, so that a tooth root thickness of the tooth 12 near the eye can be increased by 4 mm by 16 mm.
- the toothing and middle part 18 are also inclined at 12 °, but the middle part 18 is thickened by 2 mm.
- the inner thigh hub is evenly 24 mm thick and also thicker in the outer area.
- FIG. 30 and FIG. 31 correspond to one another, the middle part 18 and the toothing 10, 11, 12 here not being inclined, but rather being reproduced horizontally in the direction of pull.
- the tooth shear thickness is 19 mm by 6 mm thicker and the tooth root thickness of the tooth 12 near the eye is 20 mm by 4 mm thicker.
- the central part 18 is provided with saw teeth 77 and thus becomes a load-bearing element.
- the load distribution is optimized and harmful stress concentrations in the root of the inner legs 7, 9 are advantageously avoided.
- With 78 the engagement is designated, into which the sawtooth 77 projects accordingly.
- the design of the chain lock 1 shown in FIG. 32 corresponds in its basic structure to the designs described above, only that here one bidentate pair of retaining teeth is shown, in which the tooth base is shown horizontally and undercut. A wide bow cross-section to the outer leg may have an extended anti-clinging. A tongue and groove locking device 80 is shown here, this securing being combined with the anti-locking lugs 67.
- the middle part 18 lies horizontally and, as described further above, is fixed in such a way that the two lock halves 2, 3 cannot fall apart after the corresponding locking of the middle part 18.
- a tongue-and-groove locking device 80 is also implemented, an undercut toothing 79 likewise being implemented.
- the undercut toothing 79 results in a claw-like connection which advantageously has a retracting effect and counteracts bending.
- FIGS. 18, 19 and 22 also counteracts deflections, here also the tongue-and-groove locking device 80 is shown and the special design of the chain hoops 65, 66 according to FIGS. 20 and 21.
- FIG. 39 and FIG. 40 show a special design in that an additional or only a fork lock 81 is provided in the region of the ends of the outer legs 6, 8, additional security being achievable by means of additional shear bolts 82.
- This fork lock 81 is particularly illustrated in FIG. 43, the shear pin 82 providing additional protection against bending, which, however, is rarely loaded in the normal case, since the respective bidentate pair of teeth, which connects the inner and outer legs 6, 7, 8, 9, preferably is equipped with so-called saw teeth below 4 ° inclined tooth base level.
- FIGS. 41 and 42 illustrate that a two-part middle piece 18 can also be used, which is equipped with an anti-locking collar 85, specifically in the eyelet area 84.
- the two parts of the middle piece 18 ′ are fastened by means of a through screw 86 or two through screws 86, 87. 18 "effectively connected with each other and thus also determined.
- the embodiment according to FIG. 44 is a chain flat lock 1 in a single-tooth design.
- both locking bumps 70 and locking groove 71 are provided, as well as additional securing lugs 89 and fork-shaped recesses 90 assigned to the end 88.
- These locking lugs 89 and fork-shaped recesses 90 provide protection against transverse displacements and rotary movements. Only this stabilized embodiment acts as an additional or only as an anti-stripping device.
- FIG. 44.1 shows the special design of these securing parts 89, 90.
- an arc-shaped securing element 95 which supplements a Z-shaped molded part, similar to a flash, as the middle piece 18.
- the rectangular core of this molded part is followed by a point-symmetrical leg, the end of which, in a plan view of the molded part, is convexly curved and in function with a concave groove 93 of the inner leg 7, 9 of each lock half 2, 3 above or below the retaining teeth of the respective adjacent inner legs 7, 9 form a curved channel 94 of rectangular cross section.
- the curved arc-shaped securing element 95 can be driven into this channel 94 with hammer blows, which is then held in the installed position by pretensioning.
- the curved channel 94 it is also possible for the curved channel 94 to have grooves formed in the inner legs 7, 9 at both ends, into which the arcuate securing element 95 is already inserted, prior to the installation, having a head shape 109 which is finished on one side and which, after installation, in the Deepening of the detonation groove 112, which is also designed for releasing, comes to rest, while on the opposite side of the chain lock 1 a leg 108 or 107 of the split-slit end 106 is bent and also comes into contact in the detonation groove 112, as a result of which loss on the inner legs occurs without a substantial cross-section 7, 9 there is advantageously an interlocking connection not only of the two securing elements 95, but above all also of the middle piece 18 designed as a step block, so that a loss of the middle piece 18 which jeopardizes operational safety, especially when the conveyor chain belt passes under the beater roller, cannot occur .
- FIGS. 30, 32 and 34 show the anti-locking collar 85, which here forms an upper barrier wall 97 and a lower barrier wall 98.
- the connecting member 83, 83 ' is correspondingly ensured.
- the special design of the central piece 18 according to FIG. 49 achieves positive locking via the correspondingly curved securing element 95.
- the two legs or the two ends 104, 105 of the legs 107 and 108 of the securing element 95 are bent in such a way that a corresponding securing is achieved.
- FIGS. 51 ff. Additional securing is achieved by means of the groove 99 and the tongue 100
- FIG. 52 clarifying their design and position.
- FIG. 53 reference should be made to the special design of the arcuate securing element 95 with the central groove 102 and the corresponding extension 103.
- FIG. 54 shows an embodiment in which arc-shaped securing elements 95 are also used, the slotted ends 106 of which are bent accordingly, while the finished head shape 109 enables simple assembly. The whole thing can be additionally stabilized by a screw which is only indicated here.
- FIG. 55 shows an embodiment with a wedge lock, the middle piece 18 being secured against frictional engagement by the two opposing cross wedges 110, 111, namely as a wedge connection that is seldom loosened and has a tightening of 1:25.
- crescent-shaped nose attachments 91 or nose thickenings 92 can also be realized.
- the crescent-shaped bow thickenings 92 of the chain lock 1 which correspond to the groove width of the chain wheel, contribute to the anti-clinking and increase in the form of a wear allowance strength in the respective joint area of the chain flat lock 1. Together or also alone with the anti-locking collar 85, a locking of the connecting link 83 is prevented.
- the hinge of 40 ° ensures the use of six-toothed sprockets with a hinge angle of 30 °.
- the anti-locking nose 67 which has already been mentioned several times, is implemented, which can be adapted to the groove width of the chain wheel and has a profile of> 60 °, preferably 80 °.
- This anti-locking nose 67 restricts the risk of locking so much that it is in some way fully effective even without the anti-locking collar 85.
- this version allows the use of six-toothed sprockets and all function-related degrees of freedom for conveyors and planing chains, such as are required when running through curved and curved troughs, roll curves, looping back and over sprockets and deflection rollers.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Chain Conveyers (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0112200A GB2363445A (en) | 1998-11-20 | 1999-11-22 | Flat chain joint |
AU30302/00A AU3030200A (en) | 1998-11-20 | 1999-11-22 | Flat chain joint |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998153643 DE19853643A1 (de) | 1998-11-20 | 1998-11-20 | Kettenflachschloss |
DE19853643.7 | 1998-11-20 | ||
DE19901233.4 | 1999-01-14 | ||
DE1999101233 DE19901233A1 (de) | 1998-11-20 | 1999-01-14 | Kettenflachschloß |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000031438A2 true WO2000031438A2 (de) | 2000-06-02 |
WO2000031438A3 WO2000031438A3 (de) | 2002-10-03 |
Family
ID=26050288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/003703 WO2000031438A2 (de) | 1998-11-20 | 1999-11-22 | Kettenflachschloss |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU3030200A (de) |
DE (1) | DE19901233A1 (de) |
GB (1) | GB2363445A (de) |
WO (1) | WO2000031438A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014040589A1 (de) * | 2012-09-11 | 2014-03-20 | Thiele Gmbh & Co. Kg | Kettenverbindungselement mit sicherungssteg |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016108050A1 (de) * | 2016-04-29 | 2017-11-02 | Schmiedestück-Vertrieb Feuerstein Gmbh | Kenterschäkel |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8125894U1 (de) | 1981-09-05 | 1981-12-24 | Halbach & Braun, 5600 Wuppertal | Kettenschloß |
DE3444008C1 (de) | 1984-11-29 | 1986-07-10 | Rud-Kettenfabrik Rieger & Dietz Gmbh U. Co, 7080 Aalen | Kettenschloß |
DE9314756U1 (de) | 1993-09-27 | 1995-01-26 | Rud Ketten Rieger & Dietz | Kettenschloß |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1901367A1 (de) * | 1969-01-11 | 1970-08-06 | Becker Pruente Gmbh | Flachschloss fuer Gliederketten |
DE3207629C2 (de) * | 1982-02-26 | 1983-12-15 | Rud-Kettenfabrik Rieger & Dietz Gmbh U. Co, 7080 Aalen | Kettenschloß für Gliederketten |
DE8512789U1 (de) * | 1985-04-26 | 1986-05-28 | Rud-Kettenfabrik Rieger & Dietz Gmbh U. Co, 7080 Aalen | Kettenschloß |
DE8704533U1 (de) * | 1987-03-27 | 1987-05-27 | Wollbrecht, Gisbert, 5804 Herdecke, De | |
DE3803250C1 (en) * | 1988-02-04 | 1989-03-16 | Fa. August Thiele, 5860 Iserlohn, De | Chain connecting element or chain lock, in particular for high-performance round steel chains |
DE4235650A1 (de) * | 1992-10-22 | 1994-04-28 | Becker Pruente Gmbh | Kettenschloß für Rundgliederketten |
AT404292B (de) * | 1995-05-18 | 1998-10-27 | Pewag Austria Gmbh | Kettenschloss für rundstahlketten |
-
1999
- 1999-01-14 DE DE1999101233 patent/DE19901233A1/de not_active Withdrawn
- 1999-11-22 GB GB0112200A patent/GB2363445A/en not_active Withdrawn
- 1999-11-22 WO PCT/DE1999/003703 patent/WO2000031438A2/de active Application Filing
- 1999-11-22 AU AU30302/00A patent/AU3030200A/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8125894U1 (de) | 1981-09-05 | 1981-12-24 | Halbach & Braun, 5600 Wuppertal | Kettenschloß |
DE3444008C1 (de) | 1984-11-29 | 1986-07-10 | Rud-Kettenfabrik Rieger & Dietz Gmbh U. Co, 7080 Aalen | Kettenschloß |
DE9314756U1 (de) | 1993-09-27 | 1995-01-26 | Rud Ketten Rieger & Dietz | Kettenschloß |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014040589A1 (de) * | 2012-09-11 | 2014-03-20 | Thiele Gmbh & Co. Kg | Kettenverbindungselement mit sicherungssteg |
US9169899B2 (en) | 2012-09-11 | 2015-10-27 | Thiele Gmbh & Co. Kg | Chain connecting element with security crosspiece |
Also Published As
Publication number | Publication date |
---|---|
GB2363445A (en) | 2001-12-19 |
WO2000031438A3 (de) | 2002-10-03 |
GB0112200D0 (en) | 2001-07-11 |
DE19901233A1 (de) | 2000-07-27 |
AU3030200A (en) | 2000-06-13 |
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