EP0111831B1 - Belt tensioning tool - Google Patents

Belt tensioning tool Download PDF

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Publication number
EP0111831B1
EP0111831B1 EP83112283A EP83112283A EP0111831B1 EP 0111831 B1 EP0111831 B1 EP 0111831B1 EP 83112283 A EP83112283 A EP 83112283A EP 83112283 A EP83112283 A EP 83112283A EP 0111831 B1 EP0111831 B1 EP 0111831B1
Authority
EP
European Patent Office
Prior art keywords
belt
clamping block
tensioning tool
lever
base member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83112283A
Other languages
German (de)
French (fr)
Other versions
EP0111831A3 (en
EP0111831A2 (en
Inventor
Harald Dipl.-Ing. Berns
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ts Gesellschaft fur Transport- und Sicherungs-Systeme Mbh
Original Assignee
Ts Gesellschaft fur Transport- und Sicherungs-Systeme Mbh
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Filing date
Publication date
Application filed by Ts Gesellschaft fur Transport- und Sicherungs-Systeme Mbh filed Critical Ts Gesellschaft fur Transport- und Sicherungs-Systeme Mbh
Publication of EP0111831A2 publication Critical patent/EP0111831A2/en
Publication of EP0111831A3 publication Critical patent/EP0111831A3/en
Application granted granted Critical
Publication of EP0111831B1 publication Critical patent/EP0111831B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
    • B65B13/025—Hand-held tools

Definitions

  • the invention relates to a belt tensioning tool mentioned in the preamble of claim 1.
  • Belts are used to tightly tie a box or to secure the load on a vehicle in the desired position against movement of the vehicle.
  • the ends of a tensioned belt are held by a turnbuckle, which is part of the packaging or the load securing device. If the turnbuckle is fixed in place, it only needs to hold one end of the belt. Usually, however, the turnbuckle will hold two belt ends that belong to one belt or to two different belts. At least one end of the belt to be held is drawn into the self-locking loop in the turnbuckle in order to be able to tighten the belt.
  • This self-locking of the belt loop in the turnbuckle acts as a backstop for the belt.
  • the belt slips in its loop, causing the belt to be tensioned higher. However, the belt does not move back automatically due to its loop in the turnbuckle; the belt rewind is blocked.
  • a belt tensioning tool which is provided with a foot piece, in which on the one hand a clamping eccentric which can be actuated with a handle and on the other hand a tensioning lever are pivoted.
  • the clamping eccentric is pressed with its handle against the elongated belt piece inserted in the foot piece, whereby the belt tensioning tool is held on the belt.
  • the tensioning lever has bolts around which the free end of the belt is inserted in a self-locking loop.
  • the foot piece of the tensioning tool consists of a U-profile, over the U-web of which the elongated belt piece runs and of an eccentric eccentrically mounted between the two U-legs molded hand lever is clamped.
  • the tensioning lever is pivotably mounted between the two U-legs.
  • one side wall of the foot piece should be open for easy insertion and removal of the stretched belt piece.
  • the opened foot piece considerably reduces the dimensional stability of the foot piece. The high forces that occur during tensioning widen the opening in the foot piece and let it go
  • the object of the invention is to develop a tool which can be quickly attached to the belt and removed again, of the type mentioned in the preamble of claim 1, which allows the belt to be tensioned or re-tensioned without difficulty to the highest tension values, in particular for belts of large width. High tensions and large belt widths are decisive in order to immovably fix the goods to be secured by the belt in the desired position.
  • the clamping block according to the invention ensures that even wide belts in the clamping position of the tool are firmly pressed against the inner surface of the lower C-frame web over the full belt width will.
  • the C-frame consequently need not be solid and heavy in the invention.
  • the plate parts forming it can rotate against each other so far that even in this case the relevant free clamping end of the clamping block runs parallel to the inner surface of the lower C-frame web and therefore the above-mentioned perfect pressing is guaranteed over the entire belt width.
  • This special design means that the terminal block can be easily adapted to any deformation of the C-frame that occurs at high voltages. As a result, the belt is gently gripped over its entire available width; One-sided clamping and warping of the belt are avoided.
  • the tool is also reliably held on the belt and can easily generate very high tensions in the belt.
  • Particularly wide straps can be used in the invention that have the advantage of transferring the pressure force to correspondingly large areas and thus guaranteeing a gentle attack of the belt on the item to be secured despite high tension values.
  • terminal block according to the invention can also be arranged in a mirror image position with respect to the upper or lower C-frame webs, which is why the mode of operation is then reversed between the two webs, so that the description applies analogously.
  • the terms “top” and “bottom” are only intended to make the reference clearer, but not to define the spatial arrangement of the tool.
  • a defined line of action is achieved when the terminal block is tilted, which allows particularly high clamping forces to be absorbed.
  • the exact bearing point is reliably determined by an asymmetrical profiling of a transverse groove provided on the upper narrow side of the uppermost plate part.
  • a longitudinal thrust bearing pin is arranged at the contact line of the upper C-frame web.
  • the handle for actuating the clamping eccentric is expediently not rigid, but, according to the measures of claim 5, is attached to the clamping block according to the invention in a longitudinally displaceable manner, because subsequent movement of the clamping block is possible, which can automatically move into the frame opening when the belt is tensioned and thereby the clamping force increased to hold the belt. If one uses the toggle lever connection between the handle and the clamping block mentioned in claim 6, one can bring about a high clamping effect at the start of work, which results from the large lever ratio of such an toggle lever connection.
  • the clamping block Due to the roughness at the free clamping end of the clamping block, which can be formed by serrations, there are different frictional relationships between the top and the bottom of the belt piece recorded in the C-frame. If the tension in the detected belt piece is increased by actuating the tensioning lever, the clamping block can only move further together with the belt into the frame opening due to the high friction on the upper side of the belt, while the lower friction on the lower side of the belt means that the belt moves over the lower C - Slide the frame web lengthways. As a result, the clamping block interacts with the C-frame like a self-tensioning eccentric, which clamps more and more tightly to the belt as the tension increases.
  • a mounting part on the lower C-frame web can serve to compensate for height differences which result when using a belt having a lower strength. This allows the gap height between the terminal block and the lower C-frame web to be changed. If one forms the attachment part, according to claim 12, as a U-shaped shoe, the attachment of the attachment part to the C-frame is facilitated.
  • one of the bolts should be designed for looping the belt in the sense of claim 13. For the same reason and to simplify handling, it is recommended, according to claim 14, to fix the other bolt only on one end to the tensioning lever and to give it a conical shape.
  • a belt 10 is used for strapping a bale of goods 11 or the like. While one strap end 12, as also shown in FIG. 2, engages around a fastening web 14 of a turnbuckle 15 by means of a firmly sewn-off end loop 13, that is to say it is firm, the other strap end 16 is looped around two webs 18, 19 in a self-locking loop 17. At the loop 17, the tension side of the lock 15 is present.
  • the two belt ends 12, 16 could alternatively belong to different belts, e.g. can be used to secure loads with lashings.
  • the self-locking loop 17 is carried out in such a way that the belt end 16 with its loop apex 20 encompasses the upper web, which is to be referred to as deflection pin 18, while the loop rests in two layers on the lower web, which is to be referred to as locking pin 19.
  • the belt 10 can be pulled through by hand in the turnbuckle, namely in the sense of the force arrow 21 indicated in FIG. 1.
  • a retraction of the belt, contrary to the force arrow 21, in the turnbuckle 15 is not readily possible.
  • at least the locking pin 19 wrapped in the double-layer loop is designed as a pivot pin for the targeted release of the turnbuckle 15, as indicated by the pivot bearing point 22 in FIG. 2.
  • the invention makes it possible to increase the tension of the belt 14 to extreme values quickly and with little effort using a special tensioning tool 23. Before this, the belt 10 may already have been pre-tensioned as desired by manual or other tensioning means.
  • This belt tensioning tool 23 comprises a C-shaped frame 24 which, as can best be seen in FIG. 10, has an open side wall 25 through which, in the sense of the arrow 26 shown in the drawing, the pretensioned belt piece 27 leading to the turnbuckle can be inserted transversely, until it reaches the inner surface 28 of the lower frame web 29.
  • a clamping block 30 is located in its open position, as shown in FIG. 5 and in particular 11, in which the inner surface 28 of the web is exposed.
  • the clamping block 30 basically consists of two plate parts 31, 32, as can be seen in FIG. 18, between which a transverse joint 33 remains, which enables the two plate parts 31, 32 to be rotated about a thrust bearing pin which expediently runs in the center of the block.
  • the plate parts 31, 32 are stuck together, e.g. by interlocking lobes, not shown, and form a structural unit.
  • the pivoting of the clamping block 38 takes place by means of a special tilting joint, the appearance of which can best be seen from FIG. 12.
  • the clamping block 30 is provided on its upper narrow side 48 with a transverse groove 35, which is profiled asymmetrically in cross-section and has a groove bottom 36 which slopes deeper towards a broad side of the clamping block 30.
  • a thrust bearing bolt running in the longitudinal direction of the groove, which serves as a pivot bearing 37 and transmits the loads to the inner surface 38 of the upper frame web 39 which it touches.
  • the clamping block 38 is transferred via a lever-like handle 42 from its unfolded position from FIGS. 5 and 6 into the folded position according to FIGS. 8 and 9.
  • the handle 42 is hinged to a bolt 43 which runs between two footrests 44 which extend perpendicular to the plane of the C-frame 24.
  • the handle 42 is coupled to the clamping block 30 via a toggle lever connection 45, 46, the appearance of which can best be seen from FIGS. 4 and 5.
  • This toggle lever connection initially comprises a lever 45 which engages in a fork end 47 of the handle 42 and is connected to the handle 42 via an elongated hole 48 and a pin 49 located there. At the other end of this lever 45 there is a pin determining the knee joint 50, which passes through four lobes of a bearing block 46, which in the present case is formed in one piece with the lower plate part 32 of the clamping block 30. The lever 45 engages between the two middle tabs of the bearing block 46.
  • a spring-elastic toggle lever connection 51 is provided in duplicate, with which the two end positions of the clamping block 30 are determined. As shown in FIGS. 4 and 6, this includes double thrust levers 58, each of which is spring-loaded in the sense of extension.
  • These thrust levers 58 consist of a sleeve part 52 which is rotatably mounted on the pivot pin 43 of the handle 42, in which a compression spring 53 is accommodated, which strives to push a plunger 54 out of the sleeve part 52.
  • the free end of the plunger 54 which is forked here, is supported in an articulated manner on the knee joint pin 50 already mentioned, in each case in the area between the two outer lobes of the bearing block 46 belonging to the clamping block 30.
  • the bearing block 46 with its four lobes forms thus toggle lever connections of two types, of which the one 51 is even double due to the two spring-loaded thrust levers 58. 4, 5 and 6, the spring-loaded push lever 58 endeavors to push the common knee joint pin 50 obliquely upwards, which is stopped by an overlapping stop 55 which sits on the tab 44 and one overlaps the outer tab of the bearing block 46.
  • the two toggle lever connections 51, 45, 46 and the clamping block 30 is kept pivoted out in the open position mentioned, where the inner surface 28 of the lower frame web 29 is exposed.
  • This inner surface 28 is formed by the outer bottom surface of a U-shaped shoe 56 which is pushed over the lower frame web 29, engages around it with its U-legs and has a defined wall thickness 57 on its U-bottom.
  • This wall thickness 57 depends on the thickness of the belt 18 to be used, which is pushed over the inner surface 28 of the frame web in the unfolded position of the handle 42 according to FIGS. 4 to 6. If this has happened, the handle 42 is folded over and brought into its folded position shown in FIGS. 8 to 10. At the transition to the folded position, the toggle lever connection 45, 46, which is decisive for the articulation of the clamping block 38, extends and the clamping block 30 reaches the particular position shown in FIGS.
  • This pivoting-in movement 59 is first braked by the fact that the free narrow side 60 of the clamping block 30, as best seen in FIG. 12, abuts against the upper side 61 of the belt piece 27 inserted into the frame 24.
  • This narrow side 60 is formed eccentrically to the pivot bearing point of the clamping block 30 determined by the thrust bearing pin 37; the circle of curvature on the narrow side has a center point which is offset from the pivot position.
  • the block end 60 is provided with roughness, namely toothings 62, which press on the belt top 61 without damaging the belt and press the belt piece 27 against the inner surface 28 serving as an abutment.
  • a somewhat elastically deformable material such as plastic, is used for the clamping block 30.
  • a somewhat elastically deformable material such as plastic, is used for the clamping block 30.
  • the clamping block 30 can still move further in the mentioned pivoting-in sense 59, which is achieved by using the belt tensioning tool.
  • the tool is first clamped at a selected point on the belt piece 27, which can best be seen from FIG. 2.
  • a bearing pin 63 which rotatably supports a roller 64 and, at the same time, pivots a tensioning lever 65 on its pin end projecting on both sides of the two foot pieces 44, 44.
  • the tensioning lever 65 engages with the two ends of a fork 66, as shown in FIGS. 3 and 4, the foot pieces 44, 44.
  • a handle 67 At the free end of the clamping lever 65 there is a handle 67.
  • a bolt 68 is attached at one end to the clamping lever 65, the cross section 69 of which increases to this attachment point, so that it has a triangular profile in the top view of FIG. 4 .
  • the free end of the belt 16 is now placed with the loop 70 shown in FIGS. 2 and 7 to 9 around the roller 64 and the pin 68, in such a way that the loop apex lies on the pin 68 and the loop legs on both sides, in each case in one layer, is enclosed, while the roller 64 is surrounded on two sides by the loop 70 on the underside.
  • This loop 70 is obtained by pulling through the loop 70 through the free space 71, according to FIGS.
  • the tensioning lever 65 is pivoted back and forth via its handle 67 in the sense of the double arrow 75 shown in FIG. 2.
  • the loop 70 acts as a self-locking holding system for the belt 10, where the free end of the belt 73 can be pulled gradually in the direction of the arrow 76 when the tensioning lever 65 is pivoted back and forth, but excludes a retrograde movement due to the deflection on the roller 64. This causes an interaction with the above-mentioned loop 17 of the belt end 16 in the turnbuckle 15.
  • tensioning lever 65 If the tensioning lever 65 is in its starting position pivoted against the C-frame 25, the belt end 16 is relaxed, and the right of the clamping point 28, 60 of the belt 10 tension K is on the pre-tensioned strap piece 27 to the turnbuckle 15 and from there to the fixed belt end 12, where there is an equal opposing tension force K. If the tensioning lever 65 is moved into its other swivel position, as seen in FIG. 2 away from the C-frame 24, a tensioning position occurs where the free belt end 16 looped into the tensioning lever 65 at 70, as indicated by the arrow K 1 and FIG.
  • the free belt end 73 has consequently become longer, but the belt tension has become considerably greater due to the contraction of the tensioning tool 23 against the turnbuckle 15.
  • the belt tension K can be gradually increased to extremely high values by repeated swiveling 75 of the tensioning lever 65 back and forth.
  • the attached shoe 56 is made of plastic and the frame-side abutment 28 generated by it is so smooth that the friction with respect to the underside of the belt 77 is significantly less than the friction between the narrow side 60 of the clamping block 30 which is significantly higher due to the teeth 62 or the like and the belt top 61.
  • the C-frame 24 can thus move to the left on the belt piece 27 in FIG. 12, while the narrow side 60 of the clamping block 30 remains unchanged in its engagement position on the belt piece 27.
  • the result is that the clamping block 30 moves further into the frame opening 41 in the sense of the pivoted-in arrow 59, which is easily possible because of the slot-pin connection 48, 49 mentioned with respect to the closed handle 42 according to FIG. 8.
  • the clamping block 30 acts as an eccentric.
  • the lower plate part 32 can be adjusted around the thrust bearing pin 34 in the sense of the rotating arrow 79 to such an extent that the narrow side 60 has the same inclination position as the inner surface 28 of the lower frame web 29.
  • the belt 27 is evenly loaded by the clamping block 30 over its entire width.
  • the tensioning tool 23 is removed again.
  • the clamping block 30 returns to its open position via the knee joint connection 45, 46 and releases the belt piece 27, which can move out again through the opening 25 by laterally moving the C-frame 24.
  • the clamping tool 23 is thus free again.
  • the belt ends 12, 16 are held in the desired high tension by the turnbuckle 15.
  • the tool 23 can be used at another location.
  • a relatively low spring force 53 is sufficient to bring about the initial clamping position of the tensioning tool 23 on the belt piece 27.
  • the high clamping results, as has been explained, during the pivoting movement of the tensioning lever 65.
  • the clamping block 30 acts as a self-exciting eccentric.

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Description

Die Erfindung bezieht sich auf ein Gurtspannwerkzeug der im Oberbegriff des Anspruches 1 genannten Art.The invention relates to a belt tensioning tool mentioned in the preamble of claim 1.

Gurte dienen dazu, eine Kiste fest zu umschnüren oder die auf einem Fahrzeug befindliche Ladung in der gewünschten Position gegenüber Bewegungen des Fahrzeugs zu sichern. Dazu werden die Enden eines gespannten Gurtes von einem Spannschloß festgehalten, weiches Bestandteil der Verpackung bzw. der Ladungssicherungs-Einrichtung ist. Ist das Spannschloß ortsfest angebracht, so braucht es nur ein Gurtende festzuhalten. Üblicherweise wird das Spannschloß aber zwei Gurtenden zusammenhalten, die zu einem Gurt oder zu zwei verschiedenen Gurten gehören. Zumindest das eine festzuhaltende Gurtende ist in einer selbsthemmenden Einschlaufung in das Spannschloß eingezogen, um den Gurt mehr spannen zu können. Diese Selbsthemmung der Gurteinschlaufung im Spannschloß wirkt wie eine Rücklaufsperre des Gurts. Beim Ziehen am freien Gurtende rutscht der Gurt in seiner Einschlaufung nach, wodurch der Gurt höher gespannt wird. Der Gurt bewegt sich aber von selbst durch seine Einschlaufung im Spannschloß nicht wieder zurück; der Rücklauf des Gurts ist also gesperrt.Belts are used to tightly tie a box or to secure the load on a vehicle in the desired position against movement of the vehicle. For this purpose, the ends of a tensioned belt are held by a turnbuckle, which is part of the packaging or the load securing device. If the turnbuckle is fixed in place, it only needs to hold one end of the belt. Usually, however, the turnbuckle will hold two belt ends that belong to one belt or to two different belts. At least one end of the belt to be held is drawn into the self-locking loop in the turnbuckle in order to be able to tighten the belt. This self-locking of the belt loop in the turnbuckle acts as a backstop for the belt. When pulling on the free end of the belt, the belt slips in its loop, causing the belt to be tensioned higher. However, the belt does not move back automatically due to its loop in the turnbuckle; the belt rewind is blocked.

Um den Gurt im Spannschloß auf hohe und höchste Werte spannen zu können, ist ein Gurtspannwerkzeug erforderlich, das mit einem Fußstück versehen ist, worin einerseits ein mit einer Handhabe betätigbarer Klemmexzenter und andererseits ein Spannhebel schwenkgelagert sind. Der Klemmexzenter wird mit seiner Handhabe gegen das im Fußstück eingeführte gestreckte Gurtstück angedrückt, wodurch das Gurtspannwerkzeug am Gurt festgehalten wird. Der Spannhebel besitzt Bolzen, um welche das freie Gurtende in einer selbsthemmenden Einschlaufung eingeführt wird. Beim Hin- und Herschwenken des Spannhebels kommt es taktweise zu einer Spannungsentlastung in dem zum Spannschloß führenden Gurtstück und zu einem durch die Hebelübersetzung wesentlich größeren zug am freien Gurtende, wodurch sich der Gurt durch seine Einschlaufung im Spannschloß durchzieht und damit die Spannung im Gurt wunschgemäß erhöht.In order to be able to tension the belt in the turnbuckle to high and highest values, a belt tensioning tool is required which is provided with a foot piece, in which on the one hand a clamping eccentric which can be actuated with a handle and on the other hand a tensioning lever are pivoted. The clamping eccentric is pressed with its handle against the elongated belt piece inserted in the foot piece, whereby the belt tensioning tool is held on the belt. The tensioning lever has bolts around which the free end of the belt is inserted in a self-locking loop. When swiveling the tensioning lever back and forth, there is intermittent tension relief in the belt piece leading to the turnbuckle and a much greater pull at the free end of the belt due to the lever ratio, as a result of which the belt runs through its loop in the turnbuckle and thus increases the tension in the belt as desired .

Bei dem bekannten Gurtspannwerkzeug der im Oberbegriff genannten Art (DE-A 15 57477) besteht das Fußstück des Spannwerkzeugs aus einem U-Profil, über dessen U-Steg das gestreckte Gurtstück verläuft und von einem exzentrisch zwischen den beiden U-Schenkeln gelagerten Kreisexzenter über einen daran angeformten Handhebel festgeklemmt wird. Am gegenüberliegenden Ende des U-förmigen Fußstücks ist der Spannhebel zwischen den beiden U-Schenkeln schwenkbar gelagert. zum leichten Ein- und Ausführen des gestreckt verlaufenden Gurtstücks soll die eine Seitenwand des Fußstücks offen sein. Das geöffnete Fußstück verringert aber beträchtlich die Formstabilität des Fußstücks. Die beim Spannen auftretenden hohen Kräfte erweitern die öffnung im Fußstück und lassen durch dieseIn the known belt tensioning tool of the type mentioned in the preamble (DE-A 15 57477), the foot piece of the tensioning tool consists of a U-profile, over the U-web of which the elongated belt piece runs and of an eccentric eccentrically mounted between the two U-legs molded hand lever is clamped. At the opposite end of the U-shaped foot piece, the tensioning lever is pivotably mounted between the two U-legs. one side wall of the foot piece should be open for easy insertion and removal of the stretched belt piece. However, the opened foot piece considerably reduces the dimensional stability of the foot piece. The high forces that occur during tensioning widen the opening in the foot piece and let it go

Deformation den Kreisexzenter in Klemmstellung nicht mehr den Gurt in-voller Gurtbreite an einem Widerlager im Fußstück angreifen. Dadurch ist das Spannwerkzeug nicht mehr zuverlässig am gestreckten Gurtstück festgelegt, wodurch hohe Spannungswerte nicht mehr erreicht werden können. Insbesondere können mit solchem Gurtspannwerkzeug nicht mehr besonders breite Gurte benutzt werden, die sich durch besonders hohe Reißfestigkeit auszeichnen.Deformation the circle eccentric in the clamped position no longer attack the belt in its full belt width at an abutment in the foot piece. As a result, the tensioning tool is no longer reliably attached to the stretched belt piece, as a result of which high tension values can no longer be achieved. In particular, such a belt tensioning tool can no longer be used to use particularly wide belts which are distinguished by particularly high tear resistance.

Es gibt zwar Gurtspannwerkzeuge anderer Art, die ohne Klemmexzenter arbeiten, doch sind dabei umständliche Vorarbeiten am Gurt erforderlich (DE-A 17 56 530), oder es treten Spannungsverluste am Gurt beim Absetzen des Werkzeugs ein (DE-A 25 52 993). In jedem Fall ist dabei das Ansetzen des Spannwerkzeugs am gestreckten Gurtstück schwierig und zeitraubend.There are other types of belt tensioning tools that work without a clamping eccentric, but this requires laborious preparatory work on the belt (DE-A 17 56 530), or there is a loss of tension on the belt when the tool is removed (DE-A 25 52 993). In any case, attaching the tensioning tool to the stretched belt piece is difficult and time-consuming.

Der Erfindung liegt die Aufgabe zugrunde, ein schnell am Gurt anzusetzendes und wieder abzunehmendes Werkzeug der im Oberbegriff des Anspruches 1 genannten Art zu entwickeln, das den Gurt auf höchste Spannungswerte problemlos zu spannen oder nachzuspannen gestattet, und zwar insbesondere bei Gurten großer Breite. Hohe Spannungen und große Gurtbreiten sind nämlich entscheidend, um das vom Gurt zu sichernde Gut unbeweglich in der gewünschten Position festzulegen.The object of the invention is to develop a tool which can be quickly attached to the belt and removed again, of the type mentioned in the preamble of claim 1, which allows the belt to be tensioned or re-tensioned without difficulty to the highest tension values, in particular for belts of large width. High tensions and large belt widths are decisive in order to immovably fix the goods to be secured by the belt in the desired position.

Dies wird erfindungsgemäß durch die im Kennzeichen des Anspruches 1 erwähnten Maßnahmen erreicht. Sollte sich beim Spannvorgang der C-Rahmen durch hohe Kräfte deformieren, indem die Rahmen-Lücke sich erweitert, so sorgt der erfindungsgemäße Klemmblock dafür, daß selbst breite Gurte in Klemmstellung des Werkzeugs über die volle Gurtbreite gegen die Innenfläche des unteren C-Rahmenstegs fest angepreßt werden. Der C-Rahmen braucht folglich bei der Erfindung nicht massiv und schwer ausgebildet zu sein.This is achieved according to the invention by the measures mentioned in the characterizing part of claim 1. If the C-frame is deformed by high forces during the tensioning process, by widening the frame gap, the clamping block according to the invention ensures that even wide belts in the clamping position of the tool are firmly pressed against the inner surface of the lower C-frame web over the full belt width will. The C-frame consequently need not be solid and heavy in the invention.

Durch die Querteilung des Klemmblocks können sich die ihn bildenden Plattenteile gegeneinander so weit verdrehen, daß auch in diesem Fall des maßgebliche freie Klemmende des Klemmblocks parallel zur Innenflache des unteren C-Rahmenstegs verläuft und daher die vorgenannte einwandfreie Festpressung über die ganze Gurtbreite gewährleistet ist. Durch diesen besonderen Aufbau kann sich der Klemmblock allen bei hohen Spannungen eintretenden Verformungen des C-Rahmens bequem anpassen. Dadurch wird der Gurt schonend über seine ganze zur Verfügung stehende Breite erfaßt; eine einseitige Festklemmung und ein Verziehen des Gurtes sind vermieden. Das Werkzeug ist auch zuverlässig am Gurt festgehalten und kann sehr hohe Spannungen im Gurt problemlos erzeugen. Bei der Erfindung können besonders breite Gurte verwendet werden, die den Vorteil haben, die Andruckkraft auf entsprechend große Flächenbereiche zu übertragen und daher trotz hoher Spannungswerte einen schonenden Angriff des Gurts an dem zu sichernden Gut gewährleisten.Due to the transverse division of the clamping block, the plate parts forming it can rotate against each other so far that even in this case the relevant free clamping end of the clamping block runs parallel to the inner surface of the lower C-frame web and therefore the above-mentioned perfect pressing is guaranteed over the entire belt width. This special design means that the terminal block can be easily adapted to any deformation of the C-frame that occurs at high voltages. As a result, the belt is gently gripped over its entire available width; One-sided clamping and warping of the belt are avoided. The tool is also reliably held on the belt and can easily generate very high tensions in the belt. Particularly wide straps can be used in the invention that have the advantage of transferring the pressure force to correspondingly large areas and thus guaranteeing a gentle attack of the belt on the item to be secured despite high tension values.

Es versteht sich, daß der erfindungsgemäße Klemmblock auch in spiegelbildlicher Lage bezüglich der oberen bzw. unteren C-Rahmenstege angeordnet sein kann, weshalb sich dann die Wirkungsweise zwischen den beiden Stegen vertauscht, so daß die Beschreibung sinngemäß gilt. Die Begriffe "oben" und "unten" sollen nur die Bezugnahme übersichtlicher machen, nicht aber die räumliche Anordnung des Werkzeugs festlegen.It goes without saying that the terminal block according to the invention can also be arranged in a mirror image position with respect to the upper or lower C-frame webs, which is why the mode of operation is then reversed between the two webs, so that the description applies analogously. The terms "top" and "bottom" are only intended to make the reference clearer, but not to define the spatial arrangement of the tool.

Durch die an der Innenfläche des oberen C-Rahmenstegs entstehende Berührungslinie mit dem obersten Plattenteil des erfindungsgemäßen Klemmblocks wird eine definierte Wirkungslinie beim Verkippen des Klemmblocks erreicht, die besonders hohe Klemmkräfte aufzunehmen gestattet. Aus gleichem Grunde ist es vorteilhaft, gemäß Anspruch 2, zwischen den verdrehbaren Plattenteilen des Klemmblocks einen Drucklagerbolzen anzuordnen. Durch eine unsymmetrische Profilierung einer an der oberen Schmalseite des obersten Plattenteils vorgesehenen Quernut gemäß Anspruch 3 wird der genaue Lagerpunkt zuverlässig festgelegt. Um eine problemlose Übertragung hoher Kräfte zu ermöglichen, wird, gemäß Anspruch 4, an der Berührungslinie des oberen C-Rahmenstegs ein längsverlaufender Drucklagerbolzen angeordnet.Due to the line of contact with the uppermost plate part of the terminal block according to the invention which is formed on the inner surface of the upper C-frame web, a defined line of action is achieved when the terminal block is tilted, which allows particularly high clamping forces to be absorbed. For the same reason, it is advantageous, according to claim 2, to arrange a thrust bearing pin between the rotatable plate parts of the terminal block. The exact bearing point is reliably determined by an asymmetrical profiling of a transverse groove provided on the upper narrow side of the uppermost plate part. In order to enable problem-free transmission of high forces, a longitudinal thrust bearing pin is arranged at the contact line of the upper C-frame web.

Die Handhabe zur Betätigung des Klemmexzenters wird zweckmäßigerweise nicht starr, sondern, gemäß den Maßnahmen des Anspruches 5 längsverschieblich am erfindungsgemäßen Klemmblock angebracht, weil damit eine Nachbewegung des Klemmblocks möglich ist, der sich beim Gurtspannen selbsttätig im Einschwenksinne in die Rahmenöffnung hineinbewegen kann und dadurch die Klemmkraft zum Festhalten des Gurtes erhöht. Sofern man dabei die im Anspruch 6 erwähnte Kniehebelverbindung zwischen der Handhabe und dem Klemmblock verwendet, kann man bereits bei Arbeitsbeginn kraftsparend eine hohe Klemmwirkung herbeiführen, die sich durch die große Hebelübersetzung einer solchen Kniehebelverbindung ergibt. Benutzt man die im Anspruch 7 angeführte federbelastete Kniehebelverbindung, so ergibt sich eine sich selbstsichernde Endposition des Klemmblocks einerseits in aufgeschwenkter und andererseits in zugeschwenkter Lage bezüglich der C-Rahmenöffnung. Bauliche Vereinfachungen erhält man durch die gemeinsame Nutzung eines Kniehebels nach Anspruch 8. Ein Anschlag nach Anspruch 9 kann dabei die Offenstellung des Klemmblocks über seine Kniehebelverbindung besorgen. Die Federbelastung nach Anspruch 10 sichert eine gewisse Vorspannung des Klemmblocks in seiner eingeschwenkten Lage.The handle for actuating the clamping eccentric is expediently not rigid, but, according to the measures of claim 5, is attached to the clamping block according to the invention in a longitudinally displaceable manner, because subsequent movement of the clamping block is possible, which can automatically move into the frame opening when the belt is tensioned and thereby the clamping force increased to hold the belt. If one uses the toggle lever connection between the handle and the clamping block mentioned in claim 6, one can bring about a high clamping effect at the start of work, which results from the large lever ratio of such an toggle lever connection. If the spring-loaded toggle lever connection specified in claim 7 is used, there is a self-locking end position of the terminal block on the one hand in the pivoted-open and on the other hand in the pivoted-in position with respect to the C-frame opening. Structural simplifications are obtained by sharing a toggle lever according to claim 8. A stop according to claim 9 can provide the open position of the terminal block via its toggle lever connection. The spring load according to claim 10 ensures a certain preload of the terminal block in its pivoted position.

Durch die Rauhigkeiten am freien Klemmende des Klemmblocks, die durch Zahnungen gebildet sein können, ergeben sich unterschiedliche Reibungsverhältnisse zwischen der Ober- und der Unterseite des im C-Rahmen erfaßten Gurtstäcks. Wird durch Betätigen des Spannhebels die Spannung im erfaßten Gurtstäck erhöht, so kann sich wegen der hohen Reibung auf der Gurtoberseite der Klemmblock nur zusammen mit dem Gurt in die Rahmenöffnung weiter hineinbewegen, während durch die geringere Reibung auf der Gurtunterseite sich der Gurt über den unteren C-Rahmensteg längs durchschieben kann. Dadurch wirkt der Klemmblock wie ein selbstspannender Exzenter mit dem C-Rahmen zusammen, der sich bei zunehmender Spannung immer fester am Gurt festklemmt. Für eine genaue Dosierung dieser Reibungsverhältnisse empfiehlt es sich, nach Anspruch 11, einen Aufsetzteil am unteren C-Rahmensteg zu verwenden. Ein solcher Aufsetzteil kann zum Ausgleich von Höhenunterschieden dienen, die sich bei Verwendung eines eine geringere Stärke aufweisenden Gurts ergeben. Dadurch kann nämlich die Spalthöhe zwischen dem Klemmblock und dem unteren C-Rahmensteg verändert werden. Sofern man den Aufsatzteil, gemäß Anspruch 12, als U-förmigen Schuh ausbildet, erleichtert sich die Anbringung des Aufsetzteils am C-Rahmen.Due to the roughness at the free clamping end of the clamping block, which can be formed by serrations, there are different frictional relationships between the top and the bottom of the belt piece recorded in the C-frame. If the tension in the detected belt piece is increased by actuating the tensioning lever, the clamping block can only move further together with the belt into the frame opening due to the high friction on the upper side of the belt, while the lower friction on the lower side of the belt means that the belt moves over the lower C - Slide the frame web lengthways. As a result, the clamping block interacts with the C-frame like a self-tensioning eccentric, which clamps more and more tightly to the belt as the tension increases. For an exact dosage of these friction conditions, it is advisable, according to claim 11, to use a mounting part on the lower C-frame web. Such an attachment part can serve to compensate for height differences which result when using a belt having a lower strength. This allows the gap height between the terminal block and the lower C-frame web to be changed. If one forms the attachment part, according to claim 12, as a U-shaped shoe, the attachment of the attachment part to the C-frame is facilitated.

Um hohen Spannungen problemlos standhalten zu können, sollte der eine Bolzen für die Einschlaufung des Gurtes im Sinne des Anspruches 13 ausgebildet sein. Aus gleichem Grunde sowie um die Handhabung zu vereinfachen, empfiehlt es sich, gemäß Anspruch 14, den anderen Bolzen nur einendig am Spannhebel zu befestigen und ihm konische Form zu geben.In order to be able to withstand high tensions without problems, one of the bolts should be designed for looping the belt in the sense of claim 13. For the same reason and to simplify handling, it is recommended, according to claim 14, to fix the other bolt only on one end to the tensioning lever and to give it a conical shape.

In den Zeichnungen ist die Erfindung in einem Ausführungsbeispiel dargestellt. Es zeigen:

  • Fig. 1 die schematische Seitenansicht für die Anwendung eines Gurtes zu Packungszwecken, dessen beide Gurtenden durch ein Spannschloß zusammengehalten werden, wobei das Spannschloß im Längsschnitt gezeigt ist,
  • Fig. 2 in einer Seitenansicht, teilweise im Schnitt, die Vergrößerung eines Details von Fig. 1, wo ein erfindungsgemäßes Gurtspannwerkzeug zur Erhöhung der Gurtspannung an dem zum Spannschloß führenden Gurtstück angreift,
  • Fig. 3 und 4 die Seitenansicht bzw. Draufsicht auf das Spannschloß von Fig. 2, wenn sich die Bauteile in Offenlage befinden, um an ein Gurtstück angesetzt zu werden,
  • Fig. 5 und 6 Längsschnittansichten durch das erfindungsgemäße Gurtspannwerkzeug längs der Schnittlinie V-V bzw. VI-VI von Fig. 4,
  • Fig. 7 die Draufsicht auf das in der Klemmlage von Fig. 8 und 9 befindliche Spannwerkzeug mit eingeschlauftem Gurt,
  • Fig. 8 und 9 entsprechende Längsschnittansichten zu Fig. 5 bzw. 6, wenn sich die Bauteile des Spannwerkzeugs in ihrer Klemmlage am Gurtstück befinden,
  • Fig. 10 in etwa natürlicher Darstellung die Endansicht auf das Werkzeug in Blickrichtung X von Fig. 3 und
  • Fig. 11 und 12 in etwa natürlicher Größe die Schnittansichten längs der Schnittlinie XI-XI von Fig. 10 in Offenlage bzw. Klemmlage der erfindungsgemäßen Klemm-Mittel in annähernd natürlicher Größe, wie sie sich aus Fig. 5 einerseits und Fig. 8 andererseits ergeben.
In the drawings, the invention is shown in one embodiment. Show it:
  • 1 is a schematic side view for the use of a belt for packaging purposes, the two belt ends are held together by a turnbuckle, the turnbuckle being shown in longitudinal section,
  • 2 in a side view, partly in section, the enlargement of a detail from FIG. 1, where a belt tensioning tool according to the invention acts to increase the belt tension on the belt piece leading to the turnbuckle,
  • 3 and 4, the side view and plan view of the turnbuckle of Fig. 2, when the components are in the open position to be attached to a belt piece,
  • 5 and 6 are longitudinal sectional views through the belt tensioning tool according to the invention along the section line VV and VI-VI of Fig. 4,
  • 7 is a top view of the tensioning tool in the clamped position of FIGS. 8 and 9 with the belt looped in,
  • 8 and 9 corresponding longitudinal sectional views of Fig. 5 and 6, when the components of the clamping tool are in their clamping position on the belt piece,
  • Fig. 10 in approximately natural representation End view of the tool in viewing direction X of Fig. 3 and
  • 11 and 12 in approximately natural size, the sectional views along the section line XI-XI of FIG. 10 in the open position or clamping position of the clamping means according to the invention in approximately natural size, as result from FIG. 5 on the one hand and FIG. 8 on the other hand .

Bei der in Fig. 1 gezeigten Anwendungsmöglichkeit wird ein Gurt 10 zur Umreifung eines Warenballens 11 od. dgl. verwendet. Während das eine Gurtende 12, wie auch Fig. 2 verdeutlicht, durch eine fest abgenähte Endschlaufe 13 einen Befestigungssteg 14 eines Spannschlosses 15 umgreift, also fest ist, wird das andere Gurtende 16 in einer selbsthemmenden Einschlaufung 17 um zwei Stege 18, 19 geschlungen. Bei der Einschlaufung 17 liegt die Spannseite des Schlosses 15 vor. Die beiden Gurtenden 12, 16 könnten alternativ zu verschiedenen Gurten gehören, wie sie z.B. bei Verzurrungen zum Sichern von Ladungen verwendet werden.In the application shown in FIG. 1, a belt 10 is used for strapping a bale of goods 11 or the like. While one strap end 12, as also shown in FIG. 2, engages around a fastening web 14 of a turnbuckle 15 by means of a firmly sewn-off end loop 13, that is to say it is firm, the other strap end 16 is looped around two webs 18, 19 in a self-locking loop 17. At the loop 17, the tension side of the lock 15 is present. The two belt ends 12, 16 could alternatively belong to different belts, e.g. can be used to secure loads with lashings.

Die selbsthemmende Einschlaufung 17 erfolgt in der Weise, daß das Gurtende 16 mit seinem Schlaufenscheitel 20 einlagig den oberen, als Umlenkbolzen 18 zu bezeichnenden Steg umgreift, während die Schlaufe doppellagig an dem unteren, als Sperrbolzen 19 zu bezeichnenden Steg anliegt. Bis zu einer gewissen Vorspannung läßt sich der Gurt 10 im Spannschloß von Hand durchziehen, nämlich im Sinne des in Fig. 1 angedeuteten Kraftpfeiles 21. Ein Rückzug des Gurtes, entgegen dem Kraftpfeil 21, im Spannschloß 15 ist nicht ohne weiteres möglich. Und zwar auch dann nicht, wenn zum gezielten Lösen des Spannschlosses 15 wenigstens der von der doppellagigen Schlaufe umschlungene Sperrbolzen 19 als Drehbolzen ausgebildet ist, wie durch die Drehlagerstelle 22 in Fig. 2 angedeutet ist. Es liegt ein selbsthemmendes Festhaltesystem für das freie Gurtende 16 im Spannschloß 15 vor.The self-locking loop 17 is carried out in such a way that the belt end 16 with its loop apex 20 encompasses the upper web, which is to be referred to as deflection pin 18, while the loop rests in two layers on the lower web, which is to be referred to as locking pin 19. Up to a certain pretension, the belt 10 can be pulled through by hand in the turnbuckle, namely in the sense of the force arrow 21 indicated in FIG. 1. A retraction of the belt, contrary to the force arrow 21, in the turnbuckle 15 is not readily possible. And not even if at least the locking pin 19 wrapped in the double-layer loop is designed as a pivot pin for the targeted release of the turnbuckle 15, as indicated by the pivot bearing point 22 in FIG. 2. There is a self-locking retention system for the free belt end 16 in the turnbuckle 15.

Die Erfindung ermöglicht es, die Spannung des Gurtes 14 durch ein besonderes Spannwerkzeug 23 schnell und mit geringem Kraftaufwand auf extreme Werte zu erhöhen. Vorausgehend kann der Gurt 10 durch manuelle oder durch andere Spannmittel bereits beliebig vorgespannt worden sein.The invention makes it possible to increase the tension of the belt 14 to extreme values quickly and with little effort using a special tensioning tool 23. Before this, the belt 10 may already have been pre-tensioned as desired by manual or other tensioning means.

Dieses Gurtspannwerkzeug 23 umfaßt einen C-förmigen Rahmen 24, der, wie am besten aus Fig. 10 hervorgeht, eine offene Seitenwand 25 aufweist, durch welche, im Sinne des eingezeichneten Bewegungspfeiles 26 das vorgespannte, zum Spannschloß führende Gurtstück 27 quer eingeschoben werden kann, bis es über die Innenfläche 28 des unteren Rahmenstegs 29 gelangt. Dabei befindet sich ein Klemmblock 30, wie Fig. 5 und insbesondere 11 zeigen, in seiner Offenlage, in welcher die Steg-Innenfläche 28 frei liegt.This belt tensioning tool 23 comprises a C-shaped frame 24 which, as can best be seen in FIG. 10, has an open side wall 25 through which, in the sense of the arrow 26 shown in the drawing, the pretensioned belt piece 27 leading to the turnbuckle can be inserted transversely, until it reaches the inner surface 28 of the lower frame web 29. A clamping block 30 is located in its open position, as shown in FIG. 5 and in particular 11, in which the inner surface 28 of the web is exposed.

Der Klemmblock 30 besteht grundsätzlich aus zwei Plattenteilen 31, 32, wie aus Fig. 18 hervorgeht, zwischen denen eine quer verlaufende Fuge 33 verbleibt, die eine Drehung der beiden Plattenteile 31, 32 um einen zweckmäßigerweise in der Blockmitte verlaufenden Drucklagerbolzen ermöglicht. Die Plattenteile 31, 32 hängen aneinander fest, z.B. durch nicht näher gezeigte ineinandergreifende Lappen, und bilden eine Baueinheit.The clamping block 30 basically consists of two plate parts 31, 32, as can be seen in FIG. 18, between which a transverse joint 33 remains, which enables the two plate parts 31, 32 to be rotated about a thrust bearing pin which expediently runs in the center of the block. The plate parts 31, 32 are stuck together, e.g. by interlocking lobes, not shown, and form a structural unit.

Die Schwenklagerung des Klemmblocks 38 erfolgt durch ein besonderes Kippgelenk, dessen Aussehen am besten aus Fig. 12 zu erkennen ist. Der Klemmblock 30 ist an seiner oberen Schmalseite 48 mit einer Quernut 35 versehen, die querschnittsmäßig unsymmetrisch profiliert ist und einen zur einen Breitseite des Klemmblocks 30 tiefer abfallenden Nutboden 36 besitzt. An einer Stelle des Nutbodens ist ein in Nutlängsrichtung verlaufender Drucklagerbolzen angeordnet, der als Schwenklager 37 dient und die anfallenden Belastungen an die von ihm berührte Innenfläche 38 des oberen Rahmenstegs 39 überträgt.The pivoting of the clamping block 38 takes place by means of a special tilting joint, the appearance of which can best be seen from FIG. 12. The clamping block 30 is provided on its upper narrow side 48 with a transverse groove 35, which is profiled asymmetrically in cross-section and has a groove bottom 36 which slopes deeper towards a broad side of the clamping block 30. At one point of the groove bottom there is a thrust bearing bolt running in the longitudinal direction of the groove, which serves as a pivot bearing 37 and transmits the loads to the inner surface 38 of the upper frame web 39 which it touches.

Nachdem das vorgespannte Gurtstück 27 gemäß Fig. 10 in die freie Rahmenöffnung 41 eingeschoben worden ist, wird der Klemmblock 38 über eine hebelartige Handhabe 42 aus dessen Aufklapplage von Fig. 5 und 6 in die Zuklapplage gemäß Fig. 8 und 9 überführt. Die Handhabe 42 ist an einem Bolzen 43 angelenkt, der zwischen zwei Fußstützen 44 verläuft, die senkrecht zur Ebene des C-Rahmens 24 sich erstrecken. Die Handhabe 42 ist über eine Kniehebelverbindung 45, 46 mit dem Klemmblock 30 gekuppelt, deren Aussehen am besten aus Fig. 4 und 5 zu erkennen ist.After the pretensioned belt piece 27 according to FIG. 10 has been inserted into the free frame opening 41, the clamping block 38 is transferred via a lever-like handle 42 from its unfolded position from FIGS. 5 and 6 into the folded position according to FIGS. 8 and 9. The handle 42 is hinged to a bolt 43 which runs between two footrests 44 which extend perpendicular to the plane of the C-frame 24. The handle 42 is coupled to the clamping block 30 via a toggle lever connection 45, 46, the appearance of which can best be seen from FIGS. 4 and 5.

Diese Kniehebelverbindung umfaßt zunächst einen Hebel 45, der in ein Gabelende 47 der Handhabe 42 eingreift und über ein dort befindliches Langloch 48 und einen Stift 49 mit der Handhabe 42 verbunden ist. Am anderen Ende dieses Hebels 45 befindet sich ein das Kniegelenk 50 bestimmender Stift, der vier Lappen eines Lagerbocks 46 durchsetzt, der im vorliegenden Fall einstückig mit dem unteren Plattenteil 32 des Klemmblocks 30 ausgebildet ist. Der Hebel 45 greift zwischen die beiden mittleren Lappen des Lagerbocks 46 ein.This toggle lever connection initially comprises a lever 45 which engages in a fork end 47 of the handle 42 and is connected to the handle 42 via an elongated hole 48 and a pin 49 located there. At the other end of this lever 45 there is a pin determining the knee joint 50, which passes through four lobes of a bearing block 46, which in the present case is formed in one piece with the lower plate part 32 of the clamping block 30. The lever 45 engages between the two middle tabs of the bearing block 46.

Es ist weiterhin noch eine federelastische Kniehebelverbindung 51 in doppelter Ausführung vorgesehen, mit welcher die beiden Endstellungen des Klemmblocks 30 bestimmt werden. Wie Fig. 4 und 6 verdeutlichen, gehören hierzu doppelte Schubhebel 58, die jeweils im Verlängerungssinne federhelastet sind. Diese Schubhebel 58 bestehen aus einem am Schwenkbolzen 43 der Handhabe 42 drehgelagerten Hülsenteil 52, worin eine Druckfeder 53 aufgenommen ist, die bestrebt ist, einen Stößel 54 aus dem Hülsenteil 52 herauszuschieben. Das freie Ende des Stößels 54, das hier gegabelt ist, stützt sich gelenkig an dem bereits erwähnten Kniegelenk-Stift 50 ab, und zwar jeweils in dem Bereich zwischen den beiden äußeren Lappen des zum Klemmblock 30 gehörenden Lagerbocks 46.Furthermore, a spring-elastic toggle lever connection 51 is provided in duplicate, with which the two end positions of the clamping block 30 are determined. As shown in FIGS. 4 and 6, this includes double thrust levers 58, each of which is spring-loaded in the sense of extension. These thrust levers 58 consist of a sleeve part 52 which is rotatably mounted on the pivot pin 43 of the handle 42, in which a compression spring 53 is accommodated, which strives to push a plunger 54 out of the sleeve part 52. The free end of the plunger 54, which is forked here, is supported in an articulated manner on the knee joint pin 50 already mentioned, in each case in the area between the two outer lobes of the bearing block 46 belonging to the clamping block 30.

Der Lagerbock 46 mit seinen vier Lappen bildet somit Kniehebelverbindungen zweifacher Art, von denen die eine 51 aufgrund der beiden federbelasteten Schubhebel 58 sogar doppelt ausgeführt ist. In Aufklapplage der Handhabe 42 gemäß Fig. 4, 5 und 6 sind die federbelasteten Schubhebel 58 bestrebt, den gemeinsamen Kniegelenk-Stift 50 schräg nach oben zu drücken, was durch einen übergreifenden Anschlag 55 gestoppt wird, der an der Lasche 44 sitzt und den einen äußeren Lappen des Lagerbocks 46 übergreift. Dadurch liegt eine Knicklage der zwei Kniehebelverbindungen 51;45, 46 vor und der Klemmblock 30 wird in der erwähnten Offenlage herausgeschwenkt gehalten, wo die Innenfläche 28 des unteren Rahmenstegs 29 frei liegt.The bearing block 46 with its four lobes forms thus toggle lever connections of two types, of which the one 51 is even double due to the two spring-loaded thrust levers 58. 4, 5 and 6, the spring-loaded push lever 58 endeavors to push the common knee joint pin 50 obliquely upwards, which is stopped by an overlapping stop 55 which sits on the tab 44 and one overlaps the outer tab of the bearing block 46. As a result, there is a kink position of the two toggle lever connections 51, 45, 46 and the clamping block 30 is kept pivoted out in the open position mentioned, where the inner surface 28 of the lower frame web 29 is exposed.

Diese Innenfläche 28 ist von der äußeren Bodenfläche eines U-förmigen Schuhs 56 gebildet, der über den unteren Rahmensteg 29 geschoben ist, diesen mit seinen U-Schenkeln umgreift und eine definierte Wandstärke 57 an seinem U-Boden aufweist. Diese Wandstärke 57 richtet sich nach der Stärke des zu benutzenden Gurts 18, welcher in Aufklapplage der Handhabe 42 gemäß Fig. 4 bis 6 über die Rahmensteg-Innenfläche 28 geschoben wird. Ist dies geschehen, so wird die Handhabe 42 umgelegt und in ihre aus Fig. 8 bis 10 ersichtliche Zuklapplage gebracht. Beim Übergang in die Zuklapplage streckt sich die für die Anlenkung des Klemmblocks 38 maßgebliche Kniehebelverbindung 45,46 und der Klemmblock 30 gelangt in die besondere aus Fig. 7 bis 9 sowie 12 ersichtliche Position, die als "Klemmlage" zu bezeichnen ist. Aus Sicherheitsgründen ist es vorteilhaft, diese Kniehebelverbindung 45,46 in eine gewisse Übertotpunktlage zu überführen. Dadurch hat sich auch die federbelastete andere Kniegelenkverbindung 51 in eine entsprechende Übertotpunktlage bewegt, wie Fig. 9 verdeutlicht, wo die federelastische Ausschubwirkung des Stößels 54 im Sinne der durch den Pfeil 59 angedeuteten Einschwenkbewegung wirkt und bestrebt ist, den Klemmblock 30 möglichst tief in die Rahmenöffnung 41 einzuschwenken.This inner surface 28 is formed by the outer bottom surface of a U-shaped shoe 56 which is pushed over the lower frame web 29, engages around it with its U-legs and has a defined wall thickness 57 on its U-bottom. This wall thickness 57 depends on the thickness of the belt 18 to be used, which is pushed over the inner surface 28 of the frame web in the unfolded position of the handle 42 according to FIGS. 4 to 6. If this has happened, the handle 42 is folded over and brought into its folded position shown in FIGS. 8 to 10. At the transition to the folded position, the toggle lever connection 45, 46, which is decisive for the articulation of the clamping block 38, extends and the clamping block 30 reaches the particular position shown in FIGS. 7 to 9 and 12, which is to be referred to as the "clamping position". For safety reasons, it is advantageous to transfer this toggle lever connection 45, 46 to a certain dead center position. As a result, the spring-loaded other knee joint connection 51 has moved into a corresponding over-center position, as shown in FIG. 9, where the spring-elastic extension effect of the plunger 54 acts in the sense of the pivoting-in movement indicated by the arrow 59 and the aim is to clamp the clamping block 30 as deep as possible into the frame opening 41 swivel in.

Diese Einschwenkbewegung 59 wird zunächst dadurch gebremst, daß die freie Schmalseite 60 des Klemmblocks 30, wie am besten aus Fig. 12 hervorgeht, gegen die Oberseite 61 des in den Rahmen 24 eingelegten Gurtstückes 27 stößt. Diese Schmalseite 60 ist zu der durch den Drucklagerbolzen 37 bestimmten Schwenklagerstelle des.Klemmblocks 30 exzentrisch ausgebildet; der Krümmungskreis der Schmalseite hat einen Mittelpunkt, der gegenüber der Schwenklagestelle versetzt ist. Das Blockende 60 ist zur Erzielung eines hohen Reibungsbeiwertes mit Rauhigkeiten, nämlich Zahnungen 62, versehen, die auf die Gurtoberseite 61 drücken, ohne den Gurt zu beschädigen und das Gurtstück 27 gegen die als Widerlager dienende Innenfläche 28 pressen. Dazu verwendet man für den Klemmblock 30 ein in sich etwas elastisch verformungsfähiges Material, wie Kunststoff. Wie Fig. 8 verdeutlicht, ist nach dem Zuklappen der Handhabe 42 am Langloch 48 neben dem Anlenkstift 49 noch Luft, so daß keine endgültige feste Klemmposition des Klemmblocks 30 bezüglich des C-Rahmens 24 vorliegt; der Klemmblock 30 kann sich vielmehr immer noch im erwähnten Einschwenksinne 59 weiterbewegen, was durch die Benutzung des Gurtspannwerkzeuges erreicht wird.This pivoting-in movement 59 is first braked by the fact that the free narrow side 60 of the clamping block 30, as best seen in FIG. 12, abuts against the upper side 61 of the belt piece 27 inserted into the frame 24. This narrow side 60 is formed eccentrically to the pivot bearing point of the clamping block 30 determined by the thrust bearing pin 37; the circle of curvature on the narrow side has a center point which is offset from the pivot position. In order to achieve a high coefficient of friction, the block end 60 is provided with roughness, namely toothings 62, which press on the belt top 61 without damaging the belt and press the belt piece 27 against the inner surface 28 serving as an abutment. For this purpose, a somewhat elastically deformable material, such as plastic, is used for the clamping block 30. As illustrated in FIG. 8, after the handle 42 has been closed, there is still air next to the articulation pin 49 at the elongated hole 48, so that there is no final, fixed clamping position of the clamping block 30 with respect to the C-frame 24; rather, the clamping block 30 can still move further in the mentioned pivoting-in sense 59, which is achieved by using the belt tensioning tool.

Nach dem Zuklappen der Handhabe 42 ist das Werkzeug zunächst an einer ausgewählten Stelle des Gurtstücks 27 angeklemmt, was am besten aus Fig. 2 zu erkennen ist. Zwischen den freien Enden der beiden erwähnten Fußstücke 44 sitzt ein Lagerbolzen 63, der eine Rolle 64 drehbar lagert und-zugleich auf seinen beidseitig der beiden Fußstücke 44,44 herausragenden Bolzenende einen Spannhebel 65 schwenkbar aufnimmt. Der Spannhebel 65 umgreift mit den beiden Enden einer Gabelung 66, wie Fig. 3 und 4 verdeutlichen, die Fußstücke 44,44. Am freien Ende des Spannhebels 65 befindet sich ein Handgriff 67. In axialem Abstand zum Lagerbolzen 63 ist ein Bolzen 68 einendig am Spannhebel 65 angesetzt, dessen Querschnitt 69 zu dieser Ansatzstelle zunimmt, so daß er in der Draufsicht von Fig. 4 ein dreieckförmiges Profil aufweist. Das freie Gurtende 16 wird nun mit der aus Fig. 2 sowie 7 bis 9 ersichtlichen Einschlaufung 70 um die Rolle 64 sowie den Bolzen 68 gelegt, und zwar so, daß der Schlaufenscheitel am Bolzen 68 liegt und dieser von den Schlaufenschenkeln beidseitig, jeweils einlagig, umschlossen wird, während die Rolle 64 doppellagig von der Einschlaufung 70 unterseitig umgeben ist. Diese Einschlaufung 70 erhält man, indem man durch den Freiraum 71, gemäß Fig. 7 und 8, zwischen den beiden Fußteilen 44 die Schlaufe 70 durchzieht und mit ihrem Schlaufenscheitel über den Bolzen 68 hängt. Eine am besten aus Fig. 7 ersichtliche endseitige Nase 72 schließt aus, daß der Schlaufenscheitel unbeabsichtigt vom Bolzen 68 abgestreift wird. Außerhalb der Fußteile 44 wird das freie Gurtende 73 unter der Rolle 64 herausgeführt und liegt lose. Der Spannhebel 65 selbst ist im Anschluß an seine untere Gabel 66 und den genannten Bolzen 68 mit einer aus Fig. 4 ersichtlichen Verkröpfung 74 versehen.After the handle 42 has been closed, the tool is first clamped at a selected point on the belt piece 27, which can best be seen from FIG. 2. Between the free ends of the two mentioned foot pieces 44 there is a bearing pin 63 which rotatably supports a roller 64 and, at the same time, pivots a tensioning lever 65 on its pin end projecting on both sides of the two foot pieces 44, 44. The tensioning lever 65 engages with the two ends of a fork 66, as shown in FIGS. 3 and 4, the foot pieces 44, 44. At the free end of the clamping lever 65 there is a handle 67. At an axial distance from the bearing bolt 63, a bolt 68 is attached at one end to the clamping lever 65, the cross section 69 of which increases to this attachment point, so that it has a triangular profile in the top view of FIG. 4 . The free end of the belt 16 is now placed with the loop 70 shown in FIGS. 2 and 7 to 9 around the roller 64 and the pin 68, in such a way that the loop apex lies on the pin 68 and the loop legs on both sides, in each case in one layer, is enclosed, while the roller 64 is surrounded on two sides by the loop 70 on the underside. This loop 70 is obtained by pulling through the loop 70 through the free space 71, according to FIGS. 7 and 8, between the two foot parts 44 and hanging with its loop apex over the bolt 68. An end nose 72, best seen in FIG. 7, precludes the loop apex from being inadvertently stripped off the bolt 68. Outside the foot parts 44, the free belt end 73 is led out under the roller 64 and is loose. The clamping lever 65 itself is provided with an offset 74 shown in FIG. 4 following its lower fork 66 and the bolt 68 mentioned.

Zum Spannen wird der Spannhebel 65 über seinen Handgriff 67 im Sinne des aus Fig. 2 ersichtlichen Doppelpfeils 75 hin- und hergeschwenkt. Die Einschlaufung 70 wirkt dabei als selbsthemmendes Festhaltesystem für den Gurt 10, wo sich das freie Gurtende 73 im Sinne des Richtungspfeils 76 beim Hin- und Herschwenken des Spannhebels 65 schrittweise durchziehen läßt, aber eine rückläufige Bewegung wegen der Umlenkung an der Rolle 64 ausschließt. Dabei kommt es zu einer Wechselwirkung mit der oben erwähnten Einschlaufung 17 des Gurtendes 16 im Spannschloß 15. Befindet sich der Spannhebel 65 in seiner gegen den C-Rahmen 25 verschwenkten Ausgangslage, so ist das Gurtende 16 entspannt, und die rechts von der Klemmstelle 28, 60 des Gurtes 10 befindliche Spannkraft K wird über das vorgespannte Gurtstück 27 dem Spannschloß 15 und von dort zum festen Gurtende 12 übertragen, wo es zu einer gleich großen entgegengerichteten Spannkraft K kommt. Wird der Spannhebel 65 in seine andere Schwenkstellung überführt, in Fig. 2 gesehen vom C-Rahmen 24 weg, so kommt es zu einer Spannstellung, wo das im Spannhebel 65 bei 70 eingeschlaufte freie Gurtende 16, wie durch den Pfeil K 1 und Fig. 2 verdeutlicht, einen möglichst großen Teil der Spannkraft K aufnimmt und dadurch, wie durch den kleinen Pfeil K 2 verdeutlicht, die bislang im darunter befindlichen Gurtstück 27 herrschende Spannkraft beträchtlich herabsetzt. Die Spannkraft K 1 des Gurtendes pflanzt sich über die Rolle 64, die Fußstücke 44 an die Klemmstelle 60, 28 fort, während aufgrund der großen Spannkraftunterschiede zwischen K 1 und K 2 das durch das Verschwenken des Spannhebels 65 bestimmte Gurtteilstück sich in Pfeilrichtung 76 durchzieht. Das obere Gürtelstück zwischen dem Spannschloß 15 und dem Spannwerkzeug 23 nimmt dabei längenmäßig zu auf Kosten des darunter befindlichen eingespannten Gurtstücks 27. Beim Rückschwenken des Spannhebels 65 in die vorgenannte Ausgangsstellung ist dieses gewonnene Gurtteilstück auch durch die Einschlaufung 70 durchziehbar. Das freie Gurtende 73 ist folglich länger geworden, aber die Gurtspannung ist durch das Gegeneinanderziehen des Spannwerkzeugs 23 gegen das Spannschloß 15 beträchtlich größer geworden. Die Gurtspannung K kann durch wiederholtes Hin- und Herschwenken 75 des Spannhebels 65 schrittweise auf extrem hohe Werte gesteigert werden.For tensioning, the tensioning lever 65 is pivoted back and forth via its handle 67 in the sense of the double arrow 75 shown in FIG. 2. The loop 70 acts as a self-locking holding system for the belt 10, where the free end of the belt 73 can be pulled gradually in the direction of the arrow 76 when the tensioning lever 65 is pivoted back and forth, but excludes a retrograde movement due to the deflection on the roller 64. This causes an interaction with the above-mentioned loop 17 of the belt end 16 in the turnbuckle 15. If the tensioning lever 65 is in its starting position pivoted against the C-frame 25, the belt end 16 is relaxed, and the right of the clamping point 28, 60 of the belt 10 tension K is on the pre-tensioned strap piece 27 to the turnbuckle 15 and from there to the fixed belt end 12, where there is an equal opposing tension force K. If the tensioning lever 65 is moved into its other swivel position, as seen in FIG. 2 away from the C-frame 24, a tensioning position occurs where the free belt end 16 looped into the tensioning lever 65 at 70, as indicated by the arrow K 1 and FIG. 2 illustrates, absorbs as large a part of the tensioning force K as possible, and thereby, as illustrated by the small arrow K 2, considerably reduces the tensioning force previously prevailing in the belt piece 27 below it. The tension force K 1 of the belt end propagates via the roller 64, the foot pieces 44 to the clamping point 60, 28, while due to the large tension force differences between K 1 and K 2, the belt section determined by pivoting the tension lever 65 runs through in the direction of arrow 76. The upper belt piece between the turnbuckle 15 and the tensioning tool 23 increases in length at the expense of the clamped belt piece 27 located underneath. When the tensioning lever 65 is pivoted back into the aforementioned starting position, this belt section obtained can also be pulled through the loop 70. The free belt end 73 has consequently become longer, but the belt tension has become considerably greater due to the contraction of the tensioning tool 23 against the turnbuckle 15. The belt tension K can be gradually increased to extremely high values by repeated swiveling 75 of the tensioning lever 65 back and forth.

Bei dieser Spannungserhöhung im Gurt vollziehen sich die am besten anhand der Fig. 12 zu beschreibenden Bewegungen an der Klemmstelle 28, 60 des eingespannten Gurtstücks 27.With this increase in tension in the belt, the movements best described with reference to FIG. 12 take place at the clamping point 28, 60 of the clamped belt piece 27.

Der aufgesetzte Schuh 56 ist aus Kunststoff ausgebildet und das von ihm erzeugte rahmenseitige Widerlager 28 ist so glatt, daß die Reibung gegenüber der Gurtunterseite 77 wesentlich geringer ist als die durch die Zahnungen 62 od. dgl. wesentlich höhere Reibung zwischen der Schmalseite 60 des Klemmblocks 30 und der Gurtoberseite 61. Der C-Rahmen 24 kann sich somit am Gurtstück 27 in Fig. 12 nach links bewegen, während die Schmalseite 60 des Klemmblocks 30 seine Angriffsposition am Gurtstück 27 unverändert beibehält. Die Folge ist, daß sich der Klemmblock 30 im Sinne des eingezeichneten Einschwenkpfeils 59 weiter in die Rahmenöffnung 41 hineinbewegt, was wegen der erwähnten Langloch-Zapfen-Verbindung 48, 49 - bezüglich der zugeklappten Handhabe 42 gemäß Fig. 8 ohne weiteres möglich ist. Der Klemmblock 30 wirkt als Exzenter. Seine Schmalseite 60 preßt das Gurtstück 27 zunehmend fester gegen das Widerlager 28. Aufgrund der Zuklappbewegung der Handhabe 42 und der im Zusammenhang mit Fig. 9 erläuterten Federbelastungen, erfuhr der Klemmblock 30 ursprünglich nur einen begrenzten Andruck an dem Gurtstück 27, doch schon nach wenigen Schwenkbewegungen 75 des Spannhebels 65 ist eine außerordentlich hohe Pressung des Gurtstückes 27 zwischen dem Klemmblock 30 und dem Widerlager 28 im C-Rahmen 24 erreicht.The attached shoe 56 is made of plastic and the frame-side abutment 28 generated by it is so smooth that the friction with respect to the underside of the belt 77 is significantly less than the friction between the narrow side 60 of the clamping block 30 which is significantly higher due to the teeth 62 or the like and the belt top 61. The C-frame 24 can thus move to the left on the belt piece 27 in FIG. 12, while the narrow side 60 of the clamping block 30 remains unchanged in its engagement position on the belt piece 27. The result is that the clamping block 30 moves further into the frame opening 41 in the sense of the pivoted-in arrow 59, which is easily possible because of the slot-pin connection 48, 49 mentioned with respect to the closed handle 42 according to FIG. 8. The clamping block 30 acts as an eccentric. Its narrow side 60 presses the belt piece 27 increasingly firmly against the abutment 28. Because of the closing movement of the handle 42 and the spring loads explained in connection with FIG. 9, the clamping block 30 originally only experienced limited pressure on the belt piece 27, but after only a few swivel movements 75 of the tensioning lever 65 an extraordinarily high compression of the belt piece 27 between the clamping block 30 and the abutment 28 in the C-frame 24 is achieved.

In der Klemmlage gemäß Fig. 12 macht sich die oben erwähnte Zweiteiligkeit 31, 32 des Klemmblocks 30 bemerkbar. Dies läßt sich am besten anhand der Fig. 10 erläutern, auch, wenn dort die Offenlage des Klemmblocks 30 dargestellt wird. Selbst, wenn der C-Rahmen 24 sehr massiv ist, biegt sich bei hoher Belastung der untere Rahmensteg 29 im Sinne des in Fig. 10 angedeuteten Biegepfeils 78 gegenüber dem oberen Steg 39 auf, wodurch seine das Widerlager bildende Innenfläche 28 nicht mehr parallel zur Schmalseite 60 des Klemmblocks wäre. Es würde sich dann eine ungleichmäßige Pressung des Gurtstückes 27 ergeben. Durch die Trennfuge 33 und die drehbare Verbindung zum oberen Plattenteil 31 kann sich der untere Plattenteil 32 um den Drucklagerbolzen 34 im Sinne des Drehpfeils 79 soweit verstellen, daß die Schmalseite 60 die gleiche Neigungslage wie die Innenfläche 28 des unteren Rahmenstegs 29 erhält. Damit wird trotz der Abbiegung 78 des unteren Rahmenstegs 29 der Gurt 27 über seine ganze Breite gleichmäßig vom Klemmblock 30 belastet.In the clamping position according to FIG. 12, the abovementioned two-part structure 31, 32 of the clamping block 30 is noticeable. This can best be explained with reference to FIG. 10, even if the open position of the clamping block 30 is shown there. Even if the C-frame 24 is very solid, the lower frame web 29 bends in the sense of the bending arrow 78 indicated in FIG. 10 with respect to the upper web 39 under high load, as a result of which its inner surface 28 forming the abutment no longer parallel to the narrow side 60 of the terminal block would be. There would then be an uneven pressing of the belt piece 27. Through the parting line 33 and the rotatable connection to the upper plate part 31, the lower plate part 32 can be adjusted around the thrust bearing pin 34 in the sense of the rotating arrow 79 to such an extent that the narrow side 60 has the same inclination position as the inner surface 28 of the lower frame web 29. Thus, despite the bend 78 of the lower frame web 29, the belt 27 is evenly loaded by the clamping block 30 over its entire width.

Ist im Gurt 10 die gewünschte hohe Spannkraft K erreicht, so wird das Spannwerkzeug 23 wieder entfernt. Hierzu genügt es, die Handhabe 42 umzulegen und in ihre aus Fig. 4 bis 6 ersichtliche Aufklapplage zu überführen. Über die Kniegelenkverbindung 45,46 gelangt der Klemmblock 30 wieder in seine Offenlage und gibt das Gurtstück 27 frei, welches durch seitliches Bewegen des C-Rahmens 24 wieder durch die öffnung 25 herausgelangen kann. Damit ist das Spannwerkzeug 23 wieder frei. Die Gurtenden 12,16 werden vom Spannschloß 15 in der gewünschten hohen Spannung gehalten. Das Werkzeug 23 kann an einer anderen Stelle eingesetzt werden.If the desired high tensioning force K is reached in the belt 10, the tensioning tool 23 is removed again. For this purpose, it is sufficient to fold the handle 42 and to transfer it into its unfolded position shown in FIGS. 4 to 6. The clamping block 30 returns to its open position via the knee joint connection 45, 46 and releases the belt piece 27, which can move out again through the opening 25 by laterally moving the C-frame 24. The clamping tool 23 is thus free again. The belt ends 12, 16 are held in the desired high tension by the turnbuckle 15. The tool 23 can be used at another location.

Es genügt eine verhältnismäßig geringe Federkraft 53, um die anfängliche Klemmlage des Spannwerkzeugs 23 am Gurtstück 27 herbeizuführen. Die hohe Festklemmung ergibt sich, wie erläutert wurde, bei der Schwenkbewegung des Spannhebels 65 von selbst. Der Klemmblock 30 wirkt dabei als ein sich selbst spannender Exzenter.A relatively low spring force 53 is sufficient to bring about the initial clamping position of the tensioning tool 23 on the belt piece 27. The high clamping results, as has been explained, during the pivoting movement of the tensioning lever 65. The clamping block 30 acts as a self-exciting eccentric.

Claims (14)

1. A belt tensioning tool (23) for a belt (10), in particular pretensioned, serving for packing and/or tying purposes, which, to fix the tensioned free belt end (16), is passed through a tension jack (15) therethrough with self-locking belt looping (17), in which the tensioning tool (23) has a base member (44) with an open side wall (25) for introduction, resp. withdrawal (26) of the straight belt portion (27) passing to the tension jack (15), the base member (44) has two pivot bearings (37, 63) spaced apart in a longitudinal direction of the belt, of which the one (37) serves to support an eccentric clamp (30) adapted for actuation by a handle (42), while the other one (63) serves to support a manually swivelled (75) tensioning lever (65), deflecting means (64, 68) are provided on the tensioning lever (65) for self-locking looping (70) of the free belt end (16), and the eccentric clamp (30) has a free clamping end (60) provided with roughed areas (62), which (60) in clamped position presses the straight belt portion (27) introduced through the open side wall into the base member (44) against an abutment (28) on the base member (44), while closing the gap between the belt on the abutment (28) and its pivot bearing (37) parallel to the abutment, which are connected unilaterally by a frame arm of the base member (44), characterized in that the eccentric clamp comprises a plate-shaped clamping block (30) divided transversely into at least two plate members (31, 32),
that the plate members (31, 32) of the clamping block (30) are rotatable relative to each other in the plate plane, that the abutment (28) is provided by the lower arm (29) of a C-shaped frame (24) mounted in a plane vertical to the belt extension, having a lateral opening (25), as part of the base member (44),
that a tangent line (37) on the inner surface (38) of the upper C-shapad frame arm (39) provides the eccentric pivot bearing of tha clamping block (30) for the abutting small face (40) of the upper plate member (31) of the clamping block (30), and
that the opposite small face (60) of the lower plate member (32) of the clamping block (30) provides the free clamping end of the eccentric clamp which cooperates with the inner surface (28) of the lower C-shapad frame arm (29), and providing the abutment.
2. A belt tensioning tool as claimed in the claim 1, characterized in
that on the axis of rotation between the plate members (31, 32) rotatable relative to each other, and preferably in the center of the clamping block (30) there is arranged a thrust bearing pin (34).
3. A belt tensioning tool as claimed in the claim 1 or 2, characterized in
that the upper small face (40) of the upper plate member (31) of the clamping block (30) is provided with a particularly non-symmetrically profiled transverse slot (35) into which engages the inner surface (38) of the upper C-shaped frame arm (39).
4. A belt tensioning tool as claimed in any one or several of the claims 1 to 3, characterized in
that along the tangent line between the inner surface (38) of the upper C-shaped frame arm (39) and the small face (40) of the upper plate member (31) of the clamping block (30) a thrust bearing pin (37) extends.
5. A belt tensioning tool as claimed in any one or several of the claims 1 to 4, characterized in
that the eccentric handle (42) is pivoted to the clamping block (30) via a longitudinally moved connection, such as a long-hole-pin connection (48,49) and in clamped position permits continued movement (59) of the clamping block (30) in a sense of swivel into the frame opening (41).
6. A belt tensioning tool as claimed in the claim 5, characterized in
that the handle (42) is pivoted to the clamping block (30) via a toggle lever connection (45,46) which upon transition between open position and clamped position passes through a so-called dead center position.
7. A belt tensioning tool as claimed in the claim 6, characterized in
that between the clamping block (30) and the base member (44) there is arranged another spring-bias-ad toggle lever connection (51), in which the one lever (58) is spring-biased (53) in a sense of extension.
8. A belt tensioning tool as claimed in the claims 6 and 7, characterized in
that both toggle lever connections (45,46) have a common toggle joint (50) and a common lever (46).
9. A belt tensioning tool as claimed in any one or several of the claims 5 to 8, characterized in
that the base member (44) has a stop (55) for limiting the two toggle lever connections (51; 45, 46) in the open position of the clamping block (30)
10. A belt tensioning tool as claimed in any one or several of the claims 1 to 9, characterized in
that when in clamped position, the clamping block (30) is spring-biased (53) in a sense of swivel (59) closing the frame opening (41).
11. A belt tensioning tool as claimed in any one or several of the claims 1 to 10, characterized in
that the lower C-shaped frame arm (29) is provided with a exchangeable adapter (56) changing the level of the inner surface (28).
12. A belt tensioning tool as claimed in the claim 11, characterized in
that the adapter comprises a shoe (56) gripping over the frame arm (29) in U-shaped manner, whose U-shaped bottom has a defined wall thickness (57).
13. A belt tensioning tool as claimed in any one or several of the claims 1 to 12, characterized in
that the pivot bearing (63) of the tensioning lever (65) on the base member is also the axis for a rotating roller (64) which serves as the one pin for the belt looping (70) and is rotatably supported in the base member (44) at both ends thereof.
14. A belt tensioning tool as claimed in any one or several of the claims 1 to 13, characterized in
that the other pin (68) of the tensioning lever (65) serving for the belt looping (70) is attached to the tensioning lever (65) only at one end thereof and has its cross-section (69) increasing towards its point of attachment.
EP83112283A 1982-12-18 1983-12-07 Belt tensioning tool Expired EP0111831B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823246914 DE3246914A1 (en) 1982-12-18 1982-12-18 BELT TENSIONING TOOL
DE3246914 1982-12-18

Publications (3)

Publication Number Publication Date
EP0111831A2 EP0111831A2 (en) 1984-06-27
EP0111831A3 EP0111831A3 (en) 1984-11-14
EP0111831B1 true EP0111831B1 (en) 1986-10-15

Family

ID=6181039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112283A Expired EP0111831B1 (en) 1982-12-18 1983-12-07 Belt tensioning tool

Country Status (2)

Country Link
EP (1) EP0111831B1 (en)
DE (2) DE3246914A1 (en)

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DE4412897A1 (en) * 1994-04-14 1995-10-19 Han Ching Huang Clamping device for fastening belts
DE19712582A1 (en) * 1997-03-26 1998-10-01 Ts Ges Fuer Transport Und Sich Device for lashing and securing piece goods by means of a belt, in particular a pretensionable belt
DE50004685D1 (en) * 1999-02-02 2004-01-22 Hermann Schwelling Process and tool for manual setting of a pressed bale of material in a baler
AT510547B1 (en) 2011-01-03 2012-05-15 Aba Hoertnagl Gmbh BUCKLE
AT512540B1 (en) 2012-06-28 2013-09-15 Aba Hoertnagl Gmbh Clamping device for clamping at least one belt
AT512541B1 (en) 2012-06-28 2013-09-15 Aba Hoertnagl Gmbh jig

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE277621C (en) *
AT87193B (en) * 1918-10-07 1922-02-10 Erich Edler Device for tensioning crate straps.
DE828525C (en) * 1943-10-21 1952-01-17 Packers Supply Company Ltd Device for tensioning strip material for binding boxes, bales, crates and other bodies
DE1557477B2 (en) * 1967-08-09 1976-12-23 Lindblad, Lennart, Vaargaarda (Schweden) AID DEVICE FOR TIGHTENING AND TENSIONING A STRAP
DE1756530C3 (en) 1968-06-01 1973-01-04 Herbert Sehlbach, Schmalwebereien, 5600 Wuppertal-Barmen Device for connecting, tensioning, securing and releasing lashing straps
GB1297146A (en) * 1969-11-25 1972-11-22
US3858625A (en) * 1973-09-20 1975-01-07 Interlake Inc Strap tension tool
DE2928028A1 (en) * 1979-07-11 1981-01-29 Rutzki Geb Wilke Edith TENSION LOCK FOR BELT TAPES

Also Published As

Publication number Publication date
EP0111831A3 (en) 1984-11-14
DE3246914A1 (en) 1984-06-20
DE3366889D1 (en) 1986-11-20
EP0111831A2 (en) 1984-06-27

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