EP0484930A1 - Puller and extractor for connecting pins - Google Patents
Puller and extractor for connecting pins Download PDFInfo
- Publication number
- EP0484930A1 EP0484930A1 EP91118947A EP91118947A EP0484930A1 EP 0484930 A1 EP0484930 A1 EP 0484930A1 EP 91118947 A EP91118947 A EP 91118947A EP 91118947 A EP91118947 A EP 91118947A EP 0484930 A1 EP0484930 A1 EP 0484930A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bell
- setting
- pulling device
- threaded
- threaded spindle
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/26—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
- B66C23/28—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
- B66C23/283—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements
- B66C23/286—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements with locking devices
Definitions
- the invention relates to a setting and pulling device for connecting bolts separable construction units, in particular tower units of a tower crane.
- the frame structure of the tower of a construction crane usually consists of several tower units, the vertically extending corner posts of which are detachably coupled by bolt connections.
- the ends of the corner posts to be connected are provided in pairs with pegs or peg receiving sleeves which are inserted into one another during the assembly of the tower units.
- the pegs and peg receiving sleeves are provided with mutually aligned, continuous and equal-diameter fitting openings, into which a cylindrical firing pin can be driven.
- the firing pin transmits essentially all of the forces between the corner posts and accordingly typically has a diameter of several centimeters, for example seven centimeters, with a length of thirty centimeters and more.
- the firing pin since the firing pin sits in the fitting openings of the pegs and peg receiving sleeves of the corner posts with a very tight fit, on the one hand, it must be hammered in when installing the crane with a heavy impact device.
- the firing pin tends to stick due to rust, especially fretting corrosion.
- the considerable size of the firing pin makes it difficult to start. Hitting and firing the firing pin with large sledgehammers is physically demanding and causes considerable noise.
- Such a setting and pulling device is placed with its support bell over the fitting opening assigned to the striking or connecting bolt and the coupling head of the threaded spindle is connected to the bolt.
- the bolt is removed from the support bells when setting Pulled into the fitting opening or pulled into the bell interior when pulling out of the fitting opening. If the bolt is stuck, not all of the tensile force has to be applied by the setting and pulling device; it is sufficient if the bolt is pretensioned by means of the device and then loosened by comparatively weak hammer blows on the end of the bolt facing away from the device. Since the threaded spindle in the support bell is axially freely movable, the effect of such loosening is not weakened by the support bell.
- the support bell is divided into a bell part supporting the threaded spindle and a spacer part detachably connected to the bell part and extending the axial length of the bell interior of the bell part in the axial direction of the threaded spindle. Due to this measure, on the one hand, the length of the threaded spindle and thus the loosening of the above type, opposing weight, can be reduced, and, on the other hand, the weight and size of the device is reduced, at least when the bolts are set.
- the support surface of the spacer part, on the one hand, and the bell part, on the other hand, facing away from the bell part and intended to be placed on the constructional unit expediently has approximately the same surface contour and size.
- the coupling head of the threaded spindle preferably has a threaded pin which can be screwed into an end threaded hole of the connecting bolt and a stop plate which limits the screwing depth.
- the threaded pin enables simple and safe coupling of the threaded spindle to the bolt; the stop plate limits the screw-in depth on the one hand and on the other hand transfers impact forces from the bolt to the threaded spindle.
- a pressure ring is expediently rotatably mounted on the stop plate by means of an axial pressure roller bearing on the side of the stop plate pointing axially to the threaded pin.
- the rotary engagement surfaces of the spindle nut can be key surfaces or the like for a tool, for example a wrench.
- the spindle nut can, however, be provided with a handling part, in particular a handwheel. A further ease of handling is obtained if the handling part is connected to the spindle nut via a one-way clutch, for example a ratchet clutch.
- the threaded spindle expediently has an at least two-start thread. Friction torques that reduce the preload force that can be generated can be reduced if the threaded nut is supported on the support bell by means of an axial pressure roller bearing. It is also particularly advantageous to support the threaded nut via a plastic washer on the support bell. The plastic washer is elastically deformed when the bolt is preloaded and acts as a force accumulator, which is relaxed by loosening the bolt.
- FIG. 1 shows a section through the connection area of two vertically extending corner posts arranged above one another of two tower units, not shown, of a tower crane, for example a tower crane.
- the end of one of the two corner posts is provided with a pin 1 which engages in a pin receiving sleeve 3 at the opposite end of the other corner post.
- the pin 1 and the pin receiving sleeve are provided with mutually aligned, continuous and equal-diameter fitting openings 5 and 7, in which a cylindrical striking or connecting pin 9 engages in a snug fit.
- the bolt 9 essentially transmits the entire forces between the corner posts and is accordingly dimensioned strong.
- the bolt has a diameter of several centimeters, for example seven centimeters with a length of thirty centimeters and more. Such a bolt 9 tends to stick due to fretting rust and the like.
- the device 11 has a two-part support bell 19, consisting of a bell part 13 and a spacing part 17 which extends the bell interior 15 in the axial direction, and a threaded spindle 27 which can be freely displaced in an opening 23 in the base 25 of the bell part 13.
- the threaded spindle 27 has a two-start thread provided on the outside of the bell part 13 a spindle nut 29 is screwed.
- the spindle nut 29 is supported on the outside of the base 25 via an elastically yielding plastic disc 31 and carries a handwheel 33 which, via a one-way clutch 35, for example a ratchet clutch, the spindle nut 29 for the pulling movement of the threaded spindle 27 from the support bell 19 to the spindle nut 29 directed towards.
- a one-way clutch 35 for example a ratchet clutch
- the support bell 19 is placed over the end of the bolt 9 emerging from the corner handle connection and the threaded pin 37 is screwed into the front opening of the bolt 9 until it stops on the stop plate 39. Wrench flats 41 on the opposite end of the threaded spindle 27 facilitate the coupling process.
- the handwheel 33 By turning the handwheel 33, the threaded spindle 27 is pulled out of the support bell 19, while at the same time the bolt 9 is drawn into the bell interior 15 of the support bell 19. If the bolt 9 is stuck or otherwise stuck, the manual operation of the handwheel 33 can often exert a pulling force which is insufficient for loosening the bolt 9.
- the axial depth of the support bell 19 is dimensioned such that the bell interior 15 can accommodate essentially the entire fit length of the bolt 9.
- This not only increases the weight and dimensions of the support bell 19, but also requires a comparatively long threaded spindle 27.
- the length of the threaded spindle 27 must be dimensioned so large that, as Figure 2 shows for the setting process, the bolt from the side opposite the device the corner stem connection forth into the fitting openings 5, 7 can be pulled.
- the spacer 17 is removed from the bell part 13 and the bell part 13 with its rest on the spacer 17 bearing surface 43 is placed directly on the corner post connection.
- the surface contour and size of the contact surface 43 of the bell part 13 is approximately equal to the corresponding contact surface of the spacer part 17. Accordingly, the threaded spindle 27 and the axial length of the spacer 17 can be shortened.
- the spindle nut 29 can also be provided with handling surfaces, for example wrench surfaces, in addition to or instead of the handwheel 33, to which another handling device, possibly also a motor-driven power device, can be attached.
- a pressure ring can be rotatably provided on the side facing the bolt 9, which is supported on the stop plate 39 via an axial pressure roller bearing.
- An axial pressure roller bearing can also be provided between the spindle nut 29 and the bottom 25 of the bell part 13.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Jib Cranes (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
Die Erfindung betrifft ein Setz- und Ziehgerät für Verbindungsbolzen voneinander separierbarer Konstruktionseinheiten, insbesondere Turmeinheiten eines Turmkrans.The invention relates to a setting and pulling device for connecting bolts separable construction units, in particular tower units of a tower crane.
Die Rahmenkonstruktion des Turms eines Baukrans besteht in der Regel aus mehreren Turmeinheiten, deren vertikal verlaufende Eckstiele lösbar durch Bolzenverbindungen miteinander gekuppelt sind. Bei solchen Bolzenverbindungen sind beispielsweise die zu verbindenden Enden der Eckstiele paarweise mit Zapfen bzw. Zapfenaufnahmehülsen versehen, die bei der Montage der Turmeinheiten ineinander gesteckt werden. Die Zapfen und Zapfenaufnahmehülsen sind mit zueinander ausgerichteten, durchgehenden und durchmessergleichen Paßöffnungen versehen, in die ein zylindrischer Schlagbolzen einschlagbar ist.The frame structure of the tower of a construction crane usually consists of several tower units, the vertically extending corner posts of which are detachably coupled by bolt connections. In the case of such bolt connections, for example, the ends of the corner posts to be connected are provided in pairs with pegs or peg receiving sleeves which are inserted into one another during the assembly of the tower units. The pegs and peg receiving sleeves are provided with mutually aligned, continuous and equal-diameter fitting openings, into which a cylindrical firing pin can be driven.
Der Schlagbolzen überträgt im wesentlichen die gesamten Kräfte zwischen den Eckstielen und hat dementsprechend typischerweise einen Durchmesser von mehreren Zentimetern, beispielsweise sieben Zentimeter, bei einer Länge von dreißig Zentimeter und mehr. Da der Schlagbolzen andererseits in den Paßöffnungen der Zapfen und Zapfenaufnahmehülsen der Eckstiele mit einer sehr engen Passung sitzt, muß er einerseits bei der Montage des Krans mit schwerem Schlaggerät eingeschlagen werden. Andererseits neigt der Schlagbolzen aufgrund von Rost, insbesondere auch Passungsrost, zum Festbacken. Die beträchtliche Größe des Schlagbolzens erschwert das Losschlagen. Das Einschlagen und Losschlagen der Schlagbolzen mit großen Vorschlaghämmern ist körperlich anstrengend und verursacht beträchtlichen Lärm.The firing pin transmits essentially all of the forces between the corner posts and accordingly typically has a diameter of several centimeters, for example seven centimeters, with a length of thirty centimeters and more. On the other hand, since the firing pin sits in the fitting openings of the pegs and peg receiving sleeves of the corner posts with a very tight fit, on the one hand, it must be hammered in when installing the crane with a heavy impact device. On the other hand, the firing pin tends to stick due to rust, especially fretting corrosion. The considerable size of the firing pin makes it difficult to start. Hitting and firing the firing pin with large sledgehammers is physically demanding and causes considerable noise.
Es ist Aufgabe der Erfindung einen Weg zu zeigen, wie Verbindungsbolzen der vorstehenden Art einfacher und mit weniger Lärmentwicklung als bisher gesetzt oder gezogen werden können.It is an object of the invention to show a way in which connecting bolts of the above type can be set or pulled more easily and with less noise than before.
Diese Aufgabe wird erfindungsgemäß durch ein Setz- und Ziehgerät gelöst, welches folgende Merkmale aufweist:According to the invention, this object is achieved by a setting and drawing device which has the following features:
Eine Stützglocke, eine die Stützglocke axial frei beweglich durchdringende Gewindespindel, die an ihrem auf der Seite des Glockeninnenraums gelegenen Ende einen Kupplungskopf für eine axial feste Verbindung mit dem Verbindungsbolzen hat und eine an der Stützglocke abgestützte, mit Drehangriffsflächen versehene Spindel auf der Gewindespindel.A support bell, a threaded spindle penetrating the support bell in an axially freely movable manner, which has at its end on the side of the bell interior a coupling head for an axially fixed connection to the connecting bolt, and a spindle supported on the support bell and provided with rotary engagement surfaces on the threaded spindle.
Ein solches Setz- und Ziehgerät wird mit seiner Stützglocke über die dem Schlag- bzw. Verbindungsbolzen zugeordnete Paßöffnung gesetzt und der Kupplungskopf der Gewindespindel wird mit dem Bolzen verbunden. Durch Drehen der Spindelmutter wird der Bolzen beim Setzen von der Stützglocken fernen Seite her in die Paßöffnung eingezogen bzw. beim Ziehen aus der Paßöffnung heraus in den Glockeninnenraum hineingezogen. Bei einem festsitzenden Bolzen muß nicht die gesamte Zugkraft von dem Setz- und Ziehgerät aufgebracht werden; es genügt, wenn der Bolzen mittels des Geräts vorgespannt und dann durch vergleichsweise schwache Hammerschläge auf das dem Gerät abgewandte Bolzenende gelöst wird. Da die Gewindespindel in der Stützglocke axial frei beweglich geführt ist, wird die Wirkung solcher Lockerungsschläge nicht durch die Stützglocke abgeschwächt.Such a setting and pulling device is placed with its support bell over the fitting opening assigned to the striking or connecting bolt and the coupling head of the threaded spindle is connected to the bolt. By turning the spindle nut, the bolt is removed from the support bells when setting Pulled into the fitting opening or pulled into the bell interior when pulling out of the fitting opening. If the bolt is stuck, not all of the tensile force has to be applied by the setting and pulling device; it is sufficient if the bolt is pretensioned by means of the device and then loosened by comparatively weak hammer blows on the end of the bolt facing away from the device. Since the threaded spindle in the support bell is axially freely movable, the effect of such loosening is not weakened by the support bell.
In einer bevorzugten Ausgestaltung ist die Stützglocke in einen die Gewindespindel stützenden Glockenteil und einen die axiale Länge des Glockeninnenraums des Glockenteils in Achsrichtung der Gewindespindel verlängernden, lösbar mit dem Glockenteil verbundenen Abstandteil geteilt. Aufgrund dieser Maßnahme kann einerseits die Länge der Gewindespindel und damit das Lockerungsschlägen der vorstehenden Art entgegenstehende Gewicht verringert werden und andererseits wird zumindest beim Setzen der Bolzen das Gewicht und die Größe des Geräts verringert. Die dem Glockenteil abgewandte, zum Aufsetzen auf die Konstruktionseinheit bestimmte Stützfläche des Abstandteils einerseits und des Glockenteils andererseits hat zweckmäßigerweise ungefähr gleiche Flächenkontur und Größe.In a preferred embodiment, the support bell is divided into a bell part supporting the threaded spindle and a spacer part detachably connected to the bell part and extending the axial length of the bell interior of the bell part in the axial direction of the threaded spindle. Due to this measure, on the one hand, the length of the threaded spindle and thus the loosening of the above type, opposing weight, can be reduced, and, on the other hand, the weight and size of the device is reduced, at least when the bolts are set. The support surface of the spacer part, on the one hand, and the bell part, on the other hand, facing away from the bell part and intended to be placed on the constructional unit, expediently has approximately the same surface contour and size.
Der Kupplungskopf der Gewindespindel weist vorzugsweise einen in eine stirnseitige Gewindebohrung des Verbindungsbolzens einschraubbaren Gewindezapfen und einer die Einschraubtiefe begrenzenden Anschlagteller auf. Der Gewindezapfen erlaubt einfaches und sicheres Ankuppeln der Gewindespindel an den Bolzen; der Anschlagteller begrenzt einerseits die Einschraubtiefe und überträgt andererseits Schlagkräfte vom Bolzen auf die Gewindespindel. Um ein Festfressen des Bolzens am Anschlagteller zu verhindern, ist auf der axial zum Gewindezapfen weisenden Seite des Anschlagtellers zweckmäßigerweise ein Druckring mittels eines Axialdruck-Wälzlagers drehbar an dem Anschlagteller gelagert. Es versteht sich, daß das dem Gewindezapfen axial entfernte Ende der Gewindespindel mit Schlüsselflächen zum Schließen bzw. Lösen der Verbindung der Gewindespindel zum Bolzen versehen sein kann.The coupling head of the threaded spindle preferably has a threaded pin which can be screwed into an end threaded hole of the connecting bolt and a stop plate which limits the screwing depth. The threaded pin enables simple and safe coupling of the threaded spindle to the bolt; the stop plate limits the screw-in depth on the one hand and on the other hand transfers impact forces from the bolt to the threaded spindle. To prevent the bolt from seizing up on the stop plate, a pressure ring is expediently rotatably mounted on the stop plate by means of an axial pressure roller bearing on the side of the stop plate pointing axially to the threaded pin. It goes without saying that the end of the threaded spindle which is axially distant from the threaded pin can be provided with key surfaces for closing or releasing the connection of the threaded spindle to the bolt.
Bei den Drehangriffsflächen der Spindelmutter kann es sich um Schlüsselflächen oder dergleichen für ein Werkzeug, beispielsweise einen Schraubenschlüssel handeln. Um die Handhabung zu vereinfachen kann die Spindelmutter jedoch fest mit einem Handhabungsteil, insbesondere einem Handrad versehen sein. Eine weitere Erleichterung der Handhabung ergibt sich, wenn das Handhabungsteil über eine Einwegkupplung, beispielsweise eine Ratschenkupplung mit der Spindelmutter verbunden ist.The rotary engagement surfaces of the spindle nut can be key surfaces or the like for a tool, for example a wrench. In order to simplify handling, the spindle nut can, however, be provided with a handling part, in particular a handwheel. A further ease of handling is obtained if the handling part is connected to the spindle nut via a one-way clutch, for example a ratchet clutch.
Um auch vergleichsweise große Vorspannkräfte dauerhaft aufnehmen zu können, hat die Gewindespindel zweckmäßigerweise ein wenigstens zweigängiges Gewinde. Reibdrehmomente, die die erzeugbare Vorspannkraft mindern, können verringert werden, wenn die Gewindemutter über ein Axialdruck-Wälzlager an der Stützglocke abgestützt ist. Von besonderem Vorteil ist auch eine Abstützung der Gewindemutter über eine Kunststoffscheibe an der Stützglocke. Die Kunststoffscheibe wird beim Vorspannen des Bolzens elastisch verformt und wirkt als Kraftspeicher, der durch Lockerungsschläge auf dem Bolzen entspannt wird.In order to be able to permanently absorb comparatively large preload forces, the threaded spindle expediently has an at least two-start thread. Friction torques that reduce the preload force that can be generated can be reduced if the threaded nut is supported on the support bell by means of an axial pressure roller bearing. It is also particularly advantageous to support the threaded nut via a plastic washer on the support bell. The plastic washer is elastically deformed when the bolt is preloaded and acts as a force accumulator, which is relaxed by loosening the bolt.
Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher erläutert. Hierbei zeigt:
- Figur 1
- eine Schnittansicht durch ein Setz- und Ziehgerät für Verbindungsbolzen von Turmeinheiten eines Turmkrans während des Ziehbetriebs und
- Figur 2
- eine Schnittansicht des Setz- und Ziehgeräts während des Setzbetriebs.
- Figure 1
- a sectional view through a setting and drawing device for connecting bolts of tower units of a tower crane during the drawing operation and
- Figure 2
- a sectional view of the setting and pulling device during the setting operation.
Figur zeigt einen Schnitt durch den Verbindungsbereich von zwei übereinander angeordneten, vertikal verlaufenden Eckstielen zweier im übrigen nicht dargestellten Turmeinheiten eines Turmkrans, beispielsweise eines Turmdrehkrans. Das Ende eines der beiden Eckstiele ist mit einem Zapfen 1 versehen, der in eine Zapfenaufnahmehülse 3 am gegenüberliegenden Ende des anderen Eckstiels eingreift. Der Zapfen 1 und die Zapfenaufnahmehülse sind mit zueinander ausgerichteten, durchgehenden und durchmessergleichen Paßöffnungen 5 bzw. 7 versehen, in die ein zylindrischer Schlag- bzw. Verbindungsbolzen 9 im Paßsitz eingreift. Der Bolzen 9 überträgt im wesentlichen die gesamten Kräfte zwischen den Eckstielen und ist dementsprechend kräftig dimensioniert. Typischerweise hat der Bolzen einen Durchmesser von mehreren Zentimetern, beispielsweise sieben Zentimetern bei einer Länge von dreißig Zentimetern und mehr. Ein solcher Bolzen 9 neigt aufgrund von Passungsrost und dergleichen zum Festbacken.FIG. 1 shows a section through the connection area of two vertically extending corner posts arranged above one another of two tower units, not shown, of a tower crane, for example a tower crane. The end of one of the two corner posts is provided with a pin 1 which engages in a
Mit 11 ist ein Setz- und Ziehgerät bezeichnet, mit dessen Hilfe selbst festsitzende Bolzen leicht gesetzt bzw. gezogen werden können. Das Gerät 11 hat eine, aus einem Glockenteil 13 und einem den Glockeninnenraum 15 in Achsrichtung verlängernden Abstandteil 17 bestehende, zweigeteilte Stützglocke 19 und eine in einer Öffnung 23 des Bodens 25 des Glockenteils 13 frei verschiebbare Gewindespindel 27. Die Gewindespindel 27 ist mit einem zweigängigen Gewinde versehen, auf das auf der Außenseite des Glockenteils 13 eine Spindelmutter 29 geschraubt ist. Die Spindelmutter 29 stützt sich über eine elastisch begrenzt nachgebende Kunststoffscheibe 31 auf der Außenseite des Bodens 25 ab und trägt ein Handrad 33, das über eine Einwegkupplung 35, beispielsweise eine Ratschenkupplung, die Spindelmutter 29 für die Zugbewegung der Gewindespindel 27 von der Stützglocke 19 zur Spindelmutter 29 hin gerichtet mitnimmt.With 11 a setting and drawing device is called, with the help of which even stuck bolts can be easily set or pulled. The
Das im Glockeninnenraum 15 zugekehrte Ende der Gewindespindel 27 trägt zur Kupplung mit dem Bolzen 9 einen Gewindezapfen 37 und im Abstand vom Ende der Gewindespindel einen Anschlagteller 39. Der Anschlagteller 39 begrenzt die Eindringtiefe des in eine Bohrung am Stirnende des Bolzens 9 einschraubbaren Gewindezapfens 37 und nimmt vom Bolzen 9 auf die Gewindespindel 27 wirkende Axialkräfte auf.The end of the threaded
Zum Ziehen des Bolzens 9 wird die Stützglocke 19 über das aus der Eckstielverbindung auftretende Ende des Bolzens 9 gestülpt und der Gewindezapfen 37 bis zum Anschlag am Anschlagteller 39 in die Stirnöffnung des Bolzens 9 eingeschraubt. Schlüsselflächen 41 am gegenüberliegenden Ende der Gewindespindel 27 erleichtern den Kupplungsvorgang. Durch Drehen des Handrads 33 wird die Gewindespindel 27 aus der Stützglocke 19 herausgezogen, während zugleich der Bolzen 9 in den Glockeninnenraum 15 der Stützglocke 19 hineingezogen wird. Bei festgebackenem oder sonst festsitzendem Bolzen 9 kann aufgrund der manuellen Bedienung des Handrads 33 vielfach eine zum Lösen nicht ausreichende Zugkraft auf den Bolzen 9 ausgeübt werden. Die hierbei auftretende Vorspannung reicht jedoch aus, um den Bolzen 9 durch vergleichsweise leichte Hammerschläge auf das der Gewindespindel 27 abgewandte Stirnende zu lockern. Die elastische Kunststoffscheibe 31 wirkt hierbei als Energiespeicher, der die Zugbewegung unterstützt. Da die Gewindespindel 27 in der Öffnung 23 frei verschiebbar geführt ist, wird der zum Lockern auf den Bolzen 9 geführte Schlagimpuls nicht auf die Stützglocke 19 übertragen. Dies verringert die durch den Schlagimpuls zu bewegenden Massen.To pull the
Um die Bolzen 9 vollständig ziehen zu können, ist die axiale Tiefe der Stützglocke 19 so bemessen, daß der Glockeninnenraum 15 im wesentlichen die gesamte Passungslänge des Bolzens 9 aufnehmen kann. Dies erhöht nicht nur das Gewicht und die Abmessungen der Stützglocke 19, sondern bedingt auch vergleichsweise lange Gewindespindel 27. Die Länge der Gewindespindel 27 muß so groß bemessen sein, daß, wie Figur 2 für den Setzvorgang zeigt, der Bolzen von der dem Gerät gegenüberliegenden Seite der Eckstielverbindung her in die Paßöffnungen 5, 7 hineingezogen werden kann. Zum Setzen des Bolzens 9 wird das Abstandteil 17 von dem Glockenteil 13 abgenommen und das Glockenteil 13 mit seiner ansonsten am Abstandteil 17 aufliegenden Auflagefläche 43 unmittelbar auf die Eckstielverbindung aufgesetzt. Flächenkontur und Größe der Auflagefläche 43 des Glockenteils 13 ist etwa gleich der entsprechenden Auflagefläche des Abstandteils 17 gewählt. Dementsprechend kann die Gewindespindel 27 und die axiale Länge des Abstandteils 17 gekürzt werden.In order to be able to pull the
In einer nicht näher dargestellten Variante kann die Spindelmutter 29 auch zusätzlich oder anstelle des Handrads 33 mit Handhabungsflächen, beispielsweise Schlüsselflächen, versehen sein, an die ein sonstiges Handhabungsgerät, gegebenenfalls auch ein motorisch angetriebenes Kraftgerät aufgesetzt werden kann. An dem Anschlagteller 39 kann auf der zum Bolzen 9 weisenden Seite ein Druckring drehbar vorgesehen sein, der sich über ein Axialdruck-Wälzlager an dem Anschlagteller 39 abstützt. Ein Axialdruck-Wälzlager kann auch zwischen der Spindelmutter 29 und dem Boden 25 des Glockenteils 13 vorgesehen sein.In a variant that is not shown in detail, the
Claims (11)
gekennzeichnet durch
eine Stützglocke (19),
durch eine die Stützglocke (19) axial frei beweglich durchdringende Gewindespindel (27), die an ihrem auf der Seite des Glockeninnenraums (15) gelegenen Ende einen Kupplungskopf (37, 39) für eine axial feste Verbindung mit dem Verbindungsbolzen (9) hat und durch eine an der Stützglocke (19) abgestützte, mit Drehangriffsflächen (33) versehene Spindelmutter (29) auf der Gewindespindel (27).Setting and pulling device for connecting bolts of separate construction units, in particular tower units of a tower crane,
characterized by
a support bell (19),
by means of a threaded spindle (27) which freely penetrates the support bell (19) and which has a coupling head (37, 39) at its end on the side of the bell interior (15) for an axially fixed connection to the connecting bolt (9) and through a spindle nut (29) supported on the support bell (19) and provided with rotary engagement surfaces (33) on the threaded spindle (27).
dadurch gekennzeichnet,
daß die Stützglocke (19) in einen die Gewindespindel (27) stützenden Glockenteil (13) und einen die axiale Länge des Glockeninnenraums (15) des Glockenteils (13) in Achsrichtung der Gewindespindel (27) verlängernden, lösbar mit dem Glockenteil (13) verbundenen Abstandteil (17) geteilt ist.Setting and pulling device according to claim 1,
characterized by
that the support bell (19) in a the threaded spindle (27) supporting bell part (13) and one extending the axial length of the bell interior (15) of the bell part (13) in the axial direction of the threaded spindle (27), releasably connected to the bell part (13) Spacer (17) is divided.
dadurch gekennzeichnet,
daß die dem Glockenteil (13) abgewandte, zum Aufsetzen auf die Konstruktionseinheit bestimmte Stützfläche (43) des Abstandteils (17) einerseits und des Glockenteils (13) andererseits ungefähr gleiche Flächenkontur und Größe haben.Setting and pulling device according to claim 2,
characterized by
that the support surface (43) of the spacer part (17) on the one hand and the bell part (13) on the other hand, facing away from the bell part (13) and intended to be placed on the construction unit, has approximately the same surface contour and size.
dadurch gekennzeichnet,
daß der Kupplungskopf einen in eine stirnseitige Gewindebohrung des Verbindungsbolzens (9) einschraubbaren Gewindezapfen (37) und einen die Einschraubtiefe begrenzenden Anschlagteller (39) aufweist.Setting and pulling device according to one of claims 1 to 3,
characterized by
that the coupling head has a threaded pin (37) which can be screwed into an end threaded bore of the connecting bolt (9) and a stop plate (39) which limits the screwing depth.
dadurch gekennzeichnet,
daß auf der axial zum Gewindezapfen (37) weisenden Seite des Anschlagtellers (39) ein Druckring mittels eines Axialdruck-Wälzlagers drehbar an dem Anschlagteller (39) gelagert ist.Setting and pulling device according to claim 4,
characterized by
that on the axially facing the threaded pin (37) side of the stop plate (39) a pressure ring is rotatably mounted on the stop plate (39) by means of an axial pressure roller bearing.
dadurch gekennzeichnet,
daß das dem Gewindezapfen (37) axial entfernte Ende der Gewindespindel (27) mit Schlüsselflächen (41) versehen ist.Setting and pulling device according to claim 4 or 5,
characterized by
that the threaded pin (37) axially removed end of the threaded spindle (27) is provided with key surfaces (41).
dadurch gekennzeichnet,
daß die Spindelmutter (29) ein Handhabungsteil (33), insbesondere ein Handrad trägt.Setting and pulling device according to one of claims 1 to 6,
characterized by
that the spindle nut (29) carries a handling part (33), in particular a handwheel.
dadurch gekennzeichnet,
daß das Handhabungsteil (33) über eine Einwegkupplung (35), insbesondere eine Ratschenkupplung mit der Spindelmutter verbunden ist.Setting and pulling device according to claim 8,
characterized by
that the handling part (33) is connected to the spindle nut via a one-way clutch (35), in particular a ratchet clutch.
dadurch gekennzeichnet,
daß die Gewindespindel (27) ein wenigstens zweigängiges Gewinde hat.Setting and pulling device according to one of claims 1 to 8,
characterized by
that the threaded spindle (27) has an at least two-start thread.
dadurch gekennzeichnet,
daß die Gewindemutter (29) über ein Axialdruck-Wälzlager an der Stützglocke (19) abgestützt ist.Setting and pulling device according to one of claims 1 to 9,
characterized by
that the threaded nut (29) is supported on the support bell (19) via an axial pressure roller bearing.
dadurch gekennzeichnet,
daß die Gewindemutter (29) über eine Kunststoffscheibe (31) an der Stützglocke (19) abgestützt ist.Setting and pulling device according to one of claims 1 to 10,
characterized by
that the threaded nut (29) is supported on the support bell (19) via a plastic washer (31).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9015316U | 1990-11-07 | ||
| DE9015316U DE9015316U1 (en) | 1990-11-07 | 1990-11-07 | Setting and pulling device for connecting bolts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0484930A1 true EP0484930A1 (en) | 1992-05-13 |
| EP0484930B1 EP0484930B1 (en) | 1996-02-07 |
Family
ID=6859147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91118947A Expired - Lifetime EP0484930B1 (en) | 1990-11-07 | 1991-11-06 | Puller and extractor for connecting pins |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0484930B1 (en) |
| AT (1) | ATE133890T1 (en) |
| DE (2) | DE9015316U1 (en) |
| ES (1) | ES2086454T3 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0618047A1 (en) * | 1993-03-30 | 1994-10-05 | Potain | Mounting device for connection pins in frame elements and connection pins therefore |
| FR2776951A1 (en) * | 1998-04-02 | 1999-10-08 | Jean Vautrin | Hollow security pin extractor used in vehicle immobilizers |
| CN102672669A (en) * | 2012-05-24 | 2012-09-19 | 国电大渡河流域水电开发有限公司龚嘴水力发电总厂 | Pin pullout device and application method thereof |
| CN102909688A (en) * | 2012-11-18 | 2013-02-06 | 苏州蓝王机床工具科技有限公司 | Special tool for assembling and disassembling connecting pin of turn table and suspension arm |
| CN103991056A (en) * | 2014-05-14 | 2014-08-20 | 广西桂冠电力股份有限公司大化水力发电总厂 | Special tool for pulling out woodruff key of crank arm of water guide mechanism of water turbine |
| CN106522103A (en) * | 2016-12-08 | 2017-03-22 | 宿州学院 | Large-size construction equipment telescopic supporting leg convenient to insert and extract |
| CN107336190A (en) * | 2017-05-19 | 2017-11-10 | 河钢股份有限公司承德分公司 | A kind of double-acting air cylinder piston and cylinder barrel separator |
| CN109048247A (en) * | 2018-07-23 | 2018-12-21 | 大连理工大学 | A kind of pre-tension method of piezoelectric three-dimensional load cell |
| CN111618784A (en) * | 2020-04-21 | 2020-09-04 | 贵州乌江清水河水电开发有限公司 | Rotary pin pulling device |
| CN112140053A (en) * | 2020-09-29 | 2020-12-29 | 中国航发动力股份有限公司 | Dismounting device of stop pin |
| CN113247642A (en) * | 2021-06-24 | 2021-08-13 | 湖北三江航天万峰科技发展有限公司 | Push-pull device for equipment in box body |
| CN113459037A (en) * | 2020-03-31 | 2021-10-01 | 上海烟草集团有限责任公司 | Center pin shaft mounting tool and center pin shaft mounting method |
| CN114952710A (en) * | 2022-05-25 | 2022-08-30 | 广东省源天工程有限公司 | Manual and hydraulic dual-purpose 7-type key dismounting device |
| US20230150074A1 (en) * | 2021-11-15 | 2023-05-18 | Manitowoc Crane Group France | Device for mounting/dismounting a connecting pin used for an end-to-end assembly of two frame elements |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9412626U1 (en) * | 1994-08-04 | 1994-10-06 | Bilfinger + Berger Bauaktiengesellschaft, 68165 Mannheim | Device for assembling and disassembling tower cranes |
| DE19803732C2 (en) * | 1998-01-30 | 2000-10-26 | Audi Ag | Puller for a pin pressed into a base part |
| DE10346815A1 (en) * | 2003-10-06 | 2005-05-12 | Rodenberg Kunststofftech | Method of removing or inserting rotor into or out of peristaltic pump uses threaded bore on rotor to receive extractor |
| CN104015036B (en) * | 2014-05-14 | 2016-08-17 | 广西桂冠电力股份有限公司大化水力发电总厂 | The erecting device of movable propeller turbine runner blade and installation method |
| CN104907994B (en) * | 2015-04-15 | 2017-06-09 | 王福成 | Anti-channeling anticreep anticracking is from modus ponens horse head pin single unit system |
| CN109968276A (en) * | 2018-12-28 | 2019-07-05 | 大连长丰实业总公司 | A kind of oxygen gauge pointer disassembling tool |
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|---|---|---|---|---|
| US1538306A (en) * | 1923-10-08 | 1925-05-19 | Henry W Stewart | Pump-valve seat and liner puller |
| US1938601A (en) * | 1931-11-30 | 1933-12-12 | Clarence E Blewett | Extractor |
| US4009515A (en) * | 1974-12-09 | 1977-03-01 | Charles Racin | Disc brake piston puller |
| US4094052A (en) * | 1977-05-25 | 1978-06-13 | Lock Technology, Inc. | Lock removal tool |
| PT73619A (en) * | 1981-09-04 | 1981-10-01 | Carlos Amado Da Rua Tavora | A PIPE EXTRACTOR FOR INDUSTRIAL APPLIANCES |
| GB2203090A (en) * | 1987-04-02 | 1988-10-12 | Roy Higgins | Device for removing bushes |
| EP0306738A1 (en) * | 1987-09-08 | 1989-03-15 | Horst Klann | Device for pressing in or pulling off bearings or bushings, especially for axle bearings and/or hubs of motor car wheel flanges |
-
1990
- 1990-11-07 DE DE9015316U patent/DE9015316U1/en not_active Expired - Lifetime
-
1991
- 1991-11-06 ES ES91118947T patent/ES2086454T3/en not_active Expired - Lifetime
- 1991-11-06 AT AT91118947T patent/ATE133890T1/en not_active IP Right Cessation
- 1991-11-06 DE DE59107384T patent/DE59107384D1/en not_active Expired - Fee Related
- 1991-11-06 EP EP91118947A patent/EP0484930B1/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1538306A (en) * | 1923-10-08 | 1925-05-19 | Henry W Stewart | Pump-valve seat and liner puller |
| US1938601A (en) * | 1931-11-30 | 1933-12-12 | Clarence E Blewett | Extractor |
| US4009515A (en) * | 1974-12-09 | 1977-03-01 | Charles Racin | Disc brake piston puller |
| US4094052A (en) * | 1977-05-25 | 1978-06-13 | Lock Technology, Inc. | Lock removal tool |
| PT73619A (en) * | 1981-09-04 | 1981-10-01 | Carlos Amado Da Rua Tavora | A PIPE EXTRACTOR FOR INDUSTRIAL APPLIANCES |
| GB2203090A (en) * | 1987-04-02 | 1988-10-12 | Roy Higgins | Device for removing bushes |
| EP0306738A1 (en) * | 1987-09-08 | 1989-03-15 | Horst Klann | Device for pressing in or pulling off bearings or bushings, especially for axle bearings and/or hubs of motor car wheel flanges |
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| Title |
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| WESTERN ELECTRIC; TECHNICAL DIGEST Bd. 8171, Nr. 46, April 1977, USA Seiten 1 - 2; G. W. ANNINGER: 'Concrete anchor removal tool' * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0618047A1 (en) * | 1993-03-30 | 1994-10-05 | Potain | Mounting device for connection pins in frame elements and connection pins therefore |
| FR2703389A1 (en) * | 1993-03-30 | 1994-10-07 | Potain Sa | Binding axis mounting device for frame members, and connecting pin adapted for this device. |
| FR2776951A1 (en) * | 1998-04-02 | 1999-10-08 | Jean Vautrin | Hollow security pin extractor used in vehicle immobilizers |
| CN102672669A (en) * | 2012-05-24 | 2012-09-19 | 国电大渡河流域水电开发有限公司龚嘴水力发电总厂 | Pin pullout device and application method thereof |
| CN102909688A (en) * | 2012-11-18 | 2013-02-06 | 苏州蓝王机床工具科技有限公司 | Special tool for assembling and disassembling connecting pin of turn table and suspension arm |
| CN103991056A (en) * | 2014-05-14 | 2014-08-20 | 广西桂冠电力股份有限公司大化水力发电总厂 | Special tool for pulling out woodruff key of crank arm of water guide mechanism of water turbine |
| CN106522103A (en) * | 2016-12-08 | 2017-03-22 | 宿州学院 | Large-size construction equipment telescopic supporting leg convenient to insert and extract |
| CN107336190A (en) * | 2017-05-19 | 2017-11-10 | 河钢股份有限公司承德分公司 | A kind of double-acting air cylinder piston and cylinder barrel separator |
| CN109048247A (en) * | 2018-07-23 | 2018-12-21 | 大连理工大学 | A kind of pre-tension method of piezoelectric three-dimensional load cell |
| CN113459037A (en) * | 2020-03-31 | 2021-10-01 | 上海烟草集团有限责任公司 | Center pin shaft mounting tool and center pin shaft mounting method |
| CN113459037B (en) * | 2020-03-31 | 2023-08-29 | 上海烟草集团有限责任公司 | Mounting tool for center pin shaft and mounting method for center pin shaft |
| CN111618784A (en) * | 2020-04-21 | 2020-09-04 | 贵州乌江清水河水电开发有限公司 | Rotary pin pulling device |
| CN112140053A (en) * | 2020-09-29 | 2020-12-29 | 中国航发动力股份有限公司 | Dismounting device of stop pin |
| CN113247642A (en) * | 2021-06-24 | 2021-08-13 | 湖北三江航天万峰科技发展有限公司 | Push-pull device for equipment in box body |
| CN113247642B (en) * | 2021-06-24 | 2022-07-19 | 湖北三江航天万峰科技发展有限公司 | Push-pull device for equipment in box body |
| US20230150074A1 (en) * | 2021-11-15 | 2023-05-18 | Manitowoc Crane Group France | Device for mounting/dismounting a connecting pin used for an end-to-end assembly of two frame elements |
| US11951577B2 (en) * | 2021-11-15 | 2024-04-09 | Manitowoc Crane Group France | Device for mounting/dismounting a connecting pin used for an end-to-end assembly of two frame elements |
| CN114952710A (en) * | 2022-05-25 | 2022-08-30 | 广东省源天工程有限公司 | Manual and hydraulic dual-purpose 7-type key dismounting device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0484930B1 (en) | 1996-02-07 |
| DE59107384D1 (en) | 1996-03-21 |
| ES2086454T3 (en) | 1996-07-01 |
| DE9015316U1 (en) | 1991-01-17 |
| ATE133890T1 (en) | 1996-02-15 |
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