DE2023106A1 - Roller bolt for digging tooth connection - Google Patents

Description

Patent attorney! Dr.-ln.ri. Η * · ¹ ". RUSCHKE

Dlpf.-lp.cM! « ^R. -XtULAR Bi: iv

R 1256

Ruston-Bucyrus Limited, Excavator Worka, Lincoln, England

Roller bolt for digging teeth connection

The invention relates to a latch assembly for the Wedge that holds a digging tooth tip to an adapter that mates with, or forms with, the lip of a bucket used in large excavators.

Conventional catfish is the adapter with one forward extending wedge-shaped nose provided, which in a backward-facing wedge-shaped bearing of a replaceable Zahnepttz · recorded let. The tip and the adapter nose are old vertical or horizontal transverse openings which extend fully or partially therethrough and are aligned when the tip is in Position is to determine, among other things, a wedge path. A wedge is removably incorporated in the wedge track to the top hold on to the adapter.

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It is generally necessary to have some type of latch provide to keep the wedge against axial or longitudinal movement out of the wedge path and there are Tielβ forms τοη Bolting or blocking has been sought. His well-known ones Art contains a rubber stopper, which is used in the adapt attached, as well as a metal link which is completely or partially embedded in the plug to form a detent which engages a recess in the wedge can be brought when the wedge is in position, the plug serving to resiliently counteract the locking to push the wedge. While this type of latch is generally satisfactory, it is difficult to fix a latch of this type that will function satisfactorily after repeated usage. A particular problem in this hiasioht is that the wedge must be driven past the lock when it is inserted and is removed and this results in a considerable shear force parallel to the direction of movement of the wedge. This force euohts to turn the stopper and pulls it into the wedge path, if not special shoulders or something Another expensive expedient is provided, around the stopper in place in the adapter nose, and it also results in undue wear and tear. In some bars in this way it is not possible or convenient to have the wedge deployed from either side.

The present invention provides a locking or latching arrangement for efe grave dental compound of the type which comprises a nose adapter having therein a splined bore, a removable tip that is provided with a bearing which receives the nose, around the tip to be mounted thereon, and the further is provided with an opening that is aligned with the wedge hole when the spits © are in position

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is located to determine a Keirbahn, as well as an elongated wedge which is longitudinally movable in and out of the cable car to hold the tip in position and which is provided with an Id includes a lii egelwalze mounted in the rabbit, which is engageable with the wedge recess engaged urn the healing ^ egen longitudinal movement to halt $ s further comprise a ±? ± l _o in the rabbit, which the Yfalze aufniUüit and which they - ^ e holds lateral and longitudinal movement relative to the wedge, while allowing it to come to and from c'teia. Wedge continues below demonstrate and to Arelia a üchse ileil transversely to the further Be simp solvent in the ITase which ax Valze ge _o en wedge suppressed.

iis the purpose of the invention i-tie arrangement of this roller sash, polygamy high Effective and easy on different sizes of tooth connections are customizable, while being relatively simple, inexpensive and easy to use.

In the drawings show:

Fi ^. 1 is a side view in cross section showing a G-rabzahnverbindung shows an execution of the Invention contains, the view in the plane 1-1 in Pig. 2 is shown

j? y. 2 is a cross-sectional view of the embodiment according to FIG Figo 1 in level 2-2 in ü? Ij .. '1,

3 shows another cross-sectional view of the embodiment after iig. 1 on level 3-3 in Pig. 1,

Pig. 4 a. ”Sectional view of a second embodiment the level 4-4 in Pi:,. 5,

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Pig. 5 shows a cross-sectional view of the embodiment according to Pii. 4 in level 5-5 in Pig. 4,

Pig. Figure 6 is a cross-sectional view of a third embodiment of the invention taken at 6-6 in Pig. 7,

Figure 7 is a cross-sectional view of the Pig embodiment. 6th in level 7-7 in Pig. 6,

Pig. 8 is a cross-sectional view of a fourth embodiment of the invention at level 8-8 in Pig. 9 »

Pig. Figure 9 is a cross-sectional view of the Pig embodiment. 8 on level 9-9 in Pig. 8th,

Pig.10 is a cross-sectional view of a fifth embodiment of the invention at level 10-10 in Pig. 11, and

Pig. 11 is a cross-sectional view of the Pig embodiment. on level 11-11 in Pig. 10.

The one in the Pig. The embodiment of the invention shown in FIGS. 1-3 is particularly useful for teeth in the 7.62 cm - 20.32 cm range (3 - 8 ") in width preferred. The overall construction of the toothed connection shown is generally conventional and it contains an adapter which is denoted by the reference number 1. According to normal practice, the adapter 1 be molded or attached to the lip of a bucket or other digging implement, and it may depending on the size of the teeth of the adapter itself can be a multi-part connection.

In each Palle the adapter 1 is with its front end a generally wedge-shaped nose 2 which has a Receives tooth tip as described. The front end the iiase 2 is with central upper and lower cutouts

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strand and the upper and lower wedge surfaces of the bunny are spaced with parallel adjustment strips (Fitup strips) 4 provided, which determine the surfaces that actually oppose facing surfaces of the tooth tip to store. Similar strips 4 'are provided on the sides of the nose 2 and these determine the surfaces that are actually against the facing side surfaces of the tooth tip to store. As can best be seen in Fig. 3, the strips 4 on the upper surface of the nose 2 are somewhat towards ^ down from the axial center line of the adapter 1 to the ■

Outside angled and the strips 4 on the lower Uasenoberflache are from 'the middle to the outside angled upwards, this slight angularity being used to absorb the load during the to help. The use of the adjustment strips 4, 4 'is particularly advantageous in that it makes you comfortable editable oatζ of surfaces to secure a Provide a tight fit of a tip on the adapter 1.

The tooth tip is indicated generally by the reference numeral 5 and it is provided with a rearwardly facing, generally wedge-shaped bearing 6 which tightly wedge-fits the M ITase 2 for attaching the tip 5 to the adapter 1, the top and bottom The lower walls of the layer 6 attack the surfaces of the strips 4. Near the front end of the bearing 6 are upper and lower lugs 7 which are received in the recesses 3, this arrangement providing conventional flat surfaces to help absorb axle loads.

The nose 2 is with a vertical wedge hole 8 of right-angled Provided cross-section that extends completely through, and the tooth 5 is provided with upper and lower wedge

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openings 9 are provided which are of the same general size and which are aligned with the bore 8 when the tip 5 is in position, the bore 8 and openings 9 together defining a vertical wedge path which extends completely through the tooth connection. A rural lietallkeil 10 of generally rectangular cross-section is received in the wedge track and serves to hold the tip 5 on the adapter 1 in position. The wedge 10 has a tapered linden 11 which is intended to be inserted into the wedge path first, but the wedge path has straight sides so that the wedge 10 can be inserted either from above or from below. The "/ order surface of the wedge 10 is provided with a '4uernut 12 of substantially circular cross-section at about its center, the groove 12 with a disabling or Ul egelwalze engageable, v / ie üs will be described. The side walls the adapter wedge bore 8 are preferably cleared along the curved lines, v / obei this design serves to determine short strips 14 approximately at the height of the hat 12 and the chopping wall of the bore 8 is preferably cleared at 15.

The nose 2 is with a second vertical passage 1 ο provided, which is arranged to the front of the bore 8 and which has a block-like, resilient iaisammendrüekbaren plug made of natural or synthetic rubber. Of the Plug 17 does not extend quite to the ends of the junction 16 and its free size is such that it is somewhat compressed must be when it is inserted into the bore 16 so that it will remain in place, as with a Friction fit is shown. An opening 18 extends between the bores 8 and 16 and defines a right-angled open-ended cage in which a cylindrical

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■ Metal lock roller 19 "located parallel to the keyway arranged and facing her so that it is in engagement therewith. The dimensions of the roller 19 are only slightly smaller than those of the cage 1.8, so that the ViTaIze 19 is held against substantial longitudinal movement (Movement upwards and downwards, as can be seen in 'i? Ig. 1) ocier against lateral movement (movement upwards and downwards, as in i'ig. 2), with reference to the wedge TO. However, the roller 19 is free to take care of its own axis .zu rotate, which ^ uer to the wedge 10 and parallel -to which is L'uf 12, and is also free to oppose U.N. from the wedge 10 through the open front and opening of the cage 18 to move. The plug 17 rests against it the front of the roller 19 and urges it against the rear or into engagement with the hat 12, but prevents the WuI ze 19 not on the turn. It is understandable that a Ball bearings can be used for the cylindrical roller, shown in this or the following embodiments of the invention. In such a case, however, the hat would be 12 be a spherical recess, and a circular cage would replace the generally rectangular cage 18 in order for the desired rotatability about an axis transverse to the Wedge to worry.

Furthermore, another pressure medium, e.g. a suitable one, could be used shaped leaf spring for the resilient plug 17 used to press the roller against the wedge.

When the ^r oeile are united, as is the case in the]? Ig. 1-3, the roller 19 is received in the hat 12 to engage the wedge 10 to hold the same against longitudinal movement in any direction. However, this is not i-iii sound intervention and the primary burden to the

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Holding the tip on the adapter 1 is taken up by the wedge 10 while working. The roller 19 ″ is located almost directly on both the horizontal and vertical i.center lines of the connection to ensure even distribution of forces to ensure.

To remove the tip 5, the Heil 10, as in Pig. can be seen drifting upwards or downwards. During this action, the wedge 10 exerts a shear force on the roller 19 off, but this is picked up by a slight rotation of the roller 19 and does not cause any particular problems. If the roller 19 is embedded or fixed in the plug 17 however, if it were as in older locks, this force would try to tear the same or the whole stopper free Pull it into the hole 8. When the wedge 10 is reinserted

he
exerts a similar shear force in the opposite seal, but this in turn is absorbed by rotation of the roller 19.

With the wedge 10 removed, the plug 17 moves the roller 19 to the right as seen in Fig. 1, but it does cannot come out of the cage 18 because it comes against the ledges H. In this way no danger ordered that the roller 19 falls out and is lost during the replacement of a 2ahnspitze. The roller 19 is of course during of the original "union" inserted into the cage 18 from the larger passage, which passage is so wide is how the roller 19 and the plug .17 is inserted after the roller 19 is in position.

..is can be seen that the ledges H are indeed the result the fact is that the width of the hole 8 is less than that of the cage 18. That the strips 14 are only at about the middle of the cage 18 in the preferred embodiment

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found is based on the fact of release the side walls of the bore 8 along the lines 13.

The execution of the invention included in the I ^? ig. 1-3, provides an extremely effective barrier to the wedge 10 and is also highly desirable because it is relatively simple to manufacture and has a minimal number of parts. The bore 8 and the passage 16 and the cage opening 18 are all relatively easy and convenient to form during manufacture of the adapter 1, and both the plug 17 and the roller 19 are easy to manufacture and combine. None of the parts require extremely tight tolerances or significant machining.

In the execution according to the Fi £ ,. 1-3 it would be possible instead of creating the channel opening 18, a circular one Cross hole to be provided, which extends completely through the adapter nose 2 and the Y / alze 19 by a dtift to replace, which has about the same length as the width of the rabbit 2 and which extends completely through it.

The embodiments of the invention shown in Figures 4-9 are are running the pig. 1-3 pretty similar and act in much the same way, but they differ in manufacturing details. As the basic elements the tooth connection are similar to those of the embodiment according to FIGS. 1-3, the same reference numerals are used for the same parts has been used and different reference numbers are only for the locking rollers, the deposit caps and the associated Elements used in front. .

4 and 5 is a horizontal in this embodiment Cross passage 20 is present, which extends completely through the

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Rabbit 2 extends and which is generally oval in cross-section. A suitably shaped, compressible rubber strip 21 is mounted in the front of the passage 20 and extends substantially the entire length thereof and is provided with a generally U-shaped tall saddle 22 which is vulcanized or otherwise attached to the rear surface of the Strip 21 is attached. The date 22. holds back a cylindrical Y / roller 23 and with the upper and lower V / ands of the passage 20 it serves to form a cage which allows the roller 23 to rotate about a transverse axis and to move to move against and from the wedge 10, but holds it against longitudinal or lateral movement with respect thereto. It is important to note that although the saddle 22 is attached to the G-uni strip 21 to form the cage, the roller-j 23 is still free to rotate about its own axis with the same effect as the V / alze 19 in the execution of the I ¹ Ig. 1-3 · In this embodiment the rear end of the passage 20 extends into the bore 3 and this forms curved ridges 24 which limit the rearward movement of the roller 23. The advantage of this embodiment is that only the single passage 20 needs to be formed in the nose 2, in contrast to. the passage 16 and cage 18 of the embodiment of Figures 1-3, and the saddle 22 can be separately manufactured and attached to the strip 21 before the latter is inserted. Again, the wedge 10 can be inserted or removed in either direction.

In the version of the JPig. 6 and 7 is a single vertical There is a passage 25 through the rabbit 2, which is larger in size than the bore 18. A properly shaped one Metal insert 26 is in the bore 25 with a added relatively tight fit and fills the bore 25 in the

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wtetntliohtn from. Dtr insert 26 is recessed for a To form pocket 27, which seals a deposit plug 28 receives and an opening 29 is provided which has a The cage forms the same as the cage 18 for a roller 20 ″. In this Execution, the curved strips 31 are provided to limit the roller 30 in its backward movement and the Sidewalls of pocket 27 are cut away along lines 32 "as shown in FIG. 1 to allow for forward movement of the roller to limit. The advantage of this design is that it is only necessary to have the single straight-walled passage 25 to be provided in the adapter 1 and the insert 26 can be separately molded and machined. The wedge 10 can be in can be inserted or removed in any direction.

Ia the Amsführerang dtr fig «8 UAd 9 is instead of a ·« Durehgangts, dtr fully duroh dit last 2 hindu goes, a « Tatehe 33 at dtr upper 0> trfläoht gt forms which one «Utammtndrüekbartn deposit plug 34 and tint falls aufoinurfc. In the third guideway itt has 12 dta ktilts placed higher to ansu8ttstn it at the higher height of the orphan 35, and the side walls of the bore 8 are shaped so to form curved ridges 36 which facilitate the backward movement of the roller 35. The upper part 37 of the Tooth 5 'overlying pocket 33 serves as a part of the cage for the Waist 35. This embodiment works in general the same way as the previous embodiment, and it is very easy to manufacture, but it has a disadvantage in that the locking forces are not so uniform the center line of the connection are distributed around, as in the previous embodiments, in all of which the rollers are on the horizontal and vertical center lines. In this version too, the wedge 10 should be from can be driven in at the top, but can be removed in either direction.

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The execution according to the Pig. 10 and 11 is specially designed for long teeth, where a single tooth is needed Wedge is not appropriate. In this embodiment there is a cross-wedge hole 3b with a circular cross-section, which is somewhat enlarged in the lütte and which extends through the adapter nose 2 extends to form opposing outwardly opening portions 38 'and the tooth tip 5 is provided with circular side openings 39, which with the relevant end parts '38' of the bore 38 aligned are when the tooth tip 5 is in position to form zv / ei opposing keyways. In every wedge track A headed cylindrical pin or wedge 40 is received with the two wedges 40 together serve to hold the tooth tip 5 on the adapter 2. Each key 40 has a circumferential locking groove 41 near it inner end.

Forward of the bore 38, the adapter nose 2 is provided with opposing pockets or passages 42 and each pocket 42 receives a rubber backing plug 43 which is slightly compressed so that it is held in place. A cage opening 44 similar to opening 18 leads from each passage 42 to bore 38 and serves as a cage for a roller 45. The rollers 45 engage the hats 41 to hold the wedges 40 in place, and as in that! ' all of the foregoing embodiments, the rolling in the cages 44 against lateral and longitudinal movement are relative: u wedges 40 ^ enalten, but are free to move away towards and from the wedges 40 and are also free un axes transverse to the Turning wedges 40 to release shear forces, .de nui: A. the wedges 40 auo ₀ are practiced, 'when rit; v; .: ■ .. ·· ■.-Μ ·. .. ¹ d'3S .. "Li ₁ ■ ^ .1 :: U3C around _it; t; be triebui, or '''Ji) - ■''■: ■ i'j'- - ·.. »'Τ ι-, ι;'. The Liifd _t -, openings 4Ί- si / ui across

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and extend into the circular bores 38% and this defines upper and lower retaining strips 46 for the pins 45. Advantages of this design are its suitability for longer teeth, ease of manufacture and the fact that the cylindrical splines 40 with the circumferential grooves 41 need not have any particular orientation, since part of the recess determined by the grooves 41 always appears on the surfaces of the pins 40 which face the rollers 45. Although it is preferred in this embodiment, as / ohl as λ

having an uninterrupted wedge hole in the other designs is not absolutely necessary, nor is it it is necessary to have a wedge that goes in every direction can be inserted or removed. For example, it would be in the running in the years. 10 and 11 may be separate Drill holes, only partially in each side of the rabbit 2.

Although the embodiments shown represent various preferred ways of achieving the desired result, Various changes and modifications can be made within the scope of the invention.

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Claims (1)

- H- Claims Barrier arrangement for a G-rabzaiin connection of the kind which • an adapter hare with a wedge hole located in it contains, a detachable tip, which is provided with a bearing, which receives the rabbit to the To attach a point to it and which is further provided with an opening which is aligned with the wedge hole, when the tip is in position to define a wedge path, an elongated wedge inserted into Is movable longitudinally in and out of the wedge track to hold the tip in position, and with a Locking recess is provided, as well as a locking element, which is resiliently pressed into engagement with the locking recess, characterized in that the locking element contains a locking roller (19) mounted in the bevel (2) which folds with the wedge recess (12) is engageable to hold the wedge (10) against longitudinal movement, the assembly continuing through a cage (18) is marked in the! bevel, the the roller (19) receives and holds the same against lateral and longitudinal movement relative to the wedge during the same allowed to move against and away from the wedge and rotate about an axis transverse to the wedge, continue * a pressure device (17) in the nose, which the i / alze pushes against the wedge. 2. Arrangement according to claim 1, characterized in that the roller (19) approximately on the vertical and horizontal Center lines of the rabbit (2) and the tip (5) is arranged. ORiGiNAL BATHROOM - 15 - 009847/1308 3. Arrangement according to claim 1 or 2, characterized in that that the wedge bore (3) extends completely through the adapter (1) and the üpitze (5) with openings (9) on both Ends ier kei! Bore is provided to make an uninterrupted Keilbaiiii £ u form, v / obeij the wedge path is straight, so that the wedge (10) removed from any direction or can be used. 4. An arrangement according to one of the preceding claims, characterized in Λ that the cage (18) and the Yvalze (19) of greater lateral extent than the wedge bore (8) to determine strips (14) connected to the roller ( 19) ij / i iiin _o riff can be brought to prevent the roller from dai: 313 Λ-i moved completely out of the cage into the wedge hole. 5. Arrangement according to one of the preceding claims, characterized in that the rabbit (2) has a passage (16) which is at a distance from the Ileilbohrung (8) and is suitable for the. JJruckeinrichtung (17) to receive, wherein the cage (18) is determined by an opening which leads from the passage to the wedge hole. % 6. Arrangement according to claim 5 »characterized in that the jjurchgaj-ig (16) extends completely through the rabbit (2) and aie jruciceiiix-icht a compressible, resilient one Plug - (17) is the in-the passage (16) with a relatively -'lichten practice seat is added. 7. λΐΐ ^ ν ^ ηΐύ ^ iu-, ο; - iiil · /; r - icl. 0, 'dadurc:,. reXeunaeichnet that 'Χί, τ /:roI-,-.^i -2.5} .'i vo3 i ..: . ^ u ■■. '■ ourc-'i üie liase (2)' ^r -'-- '> ■: - V -''--' ■ '-'-: ■■■■' - ■ - ■ - · α . ";, Y. "" Jiij- Uh:; Kit and vol BAD ORIGtNAL the assembly including an insert (26) disposed in and substantially the same as the passageway fills out which insert is provided with an ash (27) in the end face of the same, which is from the wedge hole, is opposite, the cage having an opening (29) determined, which leads from the! rapid against the wedge hole and wherein the resilient push plug (28) is received in the pocket. Arrangement according to claim 1, 2, 3 or 4, characterized in that the liner (2) with a passage (20) extends transversely to and partially into the wedge bore (8) and the pressure device contains a compressible strip (21) which extending along the side of the passage opposite the keyway, the assembly including a generally U-shaped saddle (22) attached to the strip near its putty facing the keyway, the saddle and the \. ^T ands of the passage together take up the cage for the roller (23) and determine. Arrangement according to claim 1, characterized in that the Ease (2) is provided on one surface of the same with a pocket (33) which in connection with the wedge bore (8) stands and is of greater lateral extent than this and which is formed by an overhanging part (37) of the tip (5) is covered when the tip is in place and wherein the pressure means is a compressible resilient includes a plug (34) received in the pocket at the end thereof opposite the key bore, that further the roller (35) is received in the pocket between the plug and the wedge bore, the side and -bottom walls of the bag with the overhanging part of the top serve to determine the cage. BATH ORIGINAL - 17 009847/13 08 10. Arrangement according to claim. 1, characterized in that the wedge bore (38) contains outwardly opening parts (38) of circular cross-section on opposite sides of the base (2), the tip (5) being provided with circular openings (39) which are connected to the relevant bore parts are aligned when the tip is in position to determine opposite keyways, v / obei the arrangement of a pair of zylinarisehen healing (40), which are incorporated in this respect g cableways removable and "wherein each of the wedges near its inner end is provided with a circumferential groove (41) which "forms the locking recess, while the base is provided with a pair of passages (42) which are associated with the key bores and are spaced apart therefrom, the pressure device comprising a pair of compressible, resilient plugs (43 ) which are received in said passages, the arrangement also having openings (44) which lead from the passages to the relevant ichen wedge tracks so that the openings form two Iläfige, also a pair of rollers (45), one in each cage, are received to come into engagement with the circumferential groove of the associated wedge. 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