EP2113341B1 - Visseuse sous pression - Google Patents

Visseuse sous pression Download PDF

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Publication number
EP2113341B1
EP2113341B1 EP09168184.1A EP09168184A EP2113341B1 EP 2113341 B1 EP2113341 B1 EP 2113341B1 EP 09168184 A EP09168184 A EP 09168184A EP 2113341 B1 EP2113341 B1 EP 2113341B1
Authority
EP
European Patent Office
Prior art keywords
shaft
housing
power wrench
measuring section
angle sensor
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 - Lifetime
Application number
EP09168184.1A
Other languages
German (de)
English (en)
Other versions
EP2113341A3 (fr
EP2113341A2 (fr
Inventor
Paul-Heinz Wagner
Ulf Sittig
Bernd Thelen
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.)
Wagner Vermoegensverwaltungs GmbH and Co KG
Original Assignee
Wagner Vermoegensverwaltungs GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wagner Vermoegensverwaltungs GmbH and Co KG filed Critical Wagner Vermoegensverwaltungs GmbH and Co KG
Priority claimed from EP02754816A external-priority patent/EP1404491B1/fr
Publication of EP2113341A2 publication Critical patent/EP2113341A2/fr
Publication of EP2113341A3 publication Critical patent/EP2113341A3/fr
Application granted granted Critical
Publication of EP2113341B1 publication Critical patent/EP2113341B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
    • B25B23/1456—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers having electrical components
    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
    • B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston
    • 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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers

Definitions

  • the invention relates to a pressure-operated hydraulic or pneumatic power wrench with a drive part and a functional part, wherein the functional part has a shaft driven by a ratchet lever, which has a driving device, and with a measuring section determining the torsion element.
  • a hydraulic power wrench according to the introductory part of claim 1 is known from DE 296 07 207 U ,
  • the shaft extends transversely through the housing of the functional part. Outside the housing, a torsional measuring section is provided on the shaft.
  • a torsion sensor in the form of multiple strain gauges is mounted on the shaft.
  • the torsion sensor forms an electrical resistance arrangement whose resistance is dependent on the torsional moment.
  • a driving device At the end of the shaft is a driving device, which can be coupled with a tool or with a screw head.
  • This power wrench with measuring cell makes it possible to measure the torsional moment acting on the screw, whereby the tightening torque can be determined directly at the screw connection.
  • the invention has for its object to provide a pressure-operated power wrench with drive part, functional part and a measuring section, which has small dimensions in the axial direction of the screw and thus at low head height (above the screw) can be used.
  • the measuring section is at least partially disposed in the area enclosed by the housing.
  • the measuring section is thus located in the area covered by the housing or protrudes at least into this area.
  • an angle sensor may be provided which determines the angle of rotation of the shaft.
  • a direct rotation angle measurement also takes place at the same time.
  • the integration of the angle sensor in the power wrench, the flat construction is not significantly affected, so that the direct measurement can be performed even in extremely confined spaces. It has been found that the combination measurement of torque and angle of rotation allows the most accurate tightening process for highly sensitive screw connections.
  • the angle sensor is preferably arranged in a cap which encloses the one end of the shaft. In this way, there is protection of the angle sensor mechanical damage and contamination.
  • the lateral extension of the housing can be kept relatively small by the cap. Through the cap, a data transmission can take place, either by means of slip rings or by wireless transmission.
  • the power screwdriver after the Figures 1 and 2 has a drive part 10 and a functional part 11.
  • the drive part 10 is replaceably attached to the functional part 11.
  • the driving part 10 includes a hydraulic cylinder (not shown) in which a piston is slidable.
  • the drive part 10 has on the cylinder housing 12 a pivotable connection device 13 for hydraulic hoses.
  • the functional part 11 has a housing 14, which here consists of two assembled housing halves 14a and 14b.
  • a housing 14 In the housing 14 there is a cavity 15, in which a (not shown) ratchet lever of the drive member 10 can be pivoted back and forth.
  • a shaft 17 In a transverse bore 16 which extends through the housing 14, a shaft 17 is rotatably mounted.
  • This shaft 17 has in the interior of the housing 14 has a circumferential toothing 18, in which engages a toothing of the ratchet lever. In this way, the shaft 17 is rotated about its axis at each stroke of the drive member 10 by a certain angle. Then the return stroke of the ratchet lever, in which the shaft 17 is not taken.
  • the shaft 17 has at one end a driving device 20, which is designed here as a key nut 40 and forms a Einsteckaus Principleung 21 of hexagonal cross-section.
  • the Einsteckausnaturalung 21 is located in the protruding from the housing 14 part of the shaft 17 and extends into the housing 14 into it. In this way, the out of the case protruding part of the shaft are kept relatively short.
  • the insertion recess 21 merges into a cavity 22 which is formed in the shaft 17.
  • the torsion sensor 23 is in the form of strain gauges, which are glued to the peripheral wall.
  • an inwardly projecting annular flange 24 which protects the torsion sensor 23 against external interference.
  • the cavity 22 forms an axial extension of the Einsteckaus Principleung 21.
  • the Einsteckausnaturalung 21 When the Einsteckaus Principleung 21 is placed on a nut to be rotated, the cavity 22 can accommodate the protruding from the nut screw shank. Therefore, the insertion recess 21 may have a relatively small axial length.
  • the Einsteckaus supraung can also serve to receive the shaft of a key nut or be designed as a square opening.
  • the cavity 22 is adjoined by a frusto-conical transition 26, which opens into a receiving space 27 in which a data transmission element 28 is contained.
  • a cable channel 29 extends to the data transmission element 28.
  • the data transmission element 28 is, for example, a slip ring assembly which connects an external cable 30 to the torsion sensor 23 which is rotatable with the shaft 17. Alternatively, the transmission can also be wireless.
  • the cable 30 leads to a cable connection 31 (FIG. Fig. 1 ), which is provided on a cantilever arm 32 of the housing 14 and to which a control or measuring device can be connected.
  • the hydraulic power wrench is further equipped with a rotation angle measuring device 33.
  • This has a code disk 34 which is fixed on the Einsteckaus Principleung 21 remote from the end of the shaft 17, and an angle sensor 35 which responds to the lines of the code disk 34 and thereby determines the angle of rotation of the shaft.
  • the angle sensor 35 consists of a Fork-type photocell into which projects the code disk 34 projecting radially from the shaft.
  • the angle sensor 35 is contained in a cap 36 which is mounted on a part of the housing 14 and fastened with screws 37.
  • the cap 36 surrounds the rear end of the shaft 17 facing away from the Einsteckaus originallyung 21 and at the same time forms a protective housing for this shaft end and the angle measuring device 33. From the angle sensor 35 leads a cable 38 to the cable terminal 31, so that both the torsion sensor 23 and the Angle sensor 35 is electrically accessible to the cable connector 31.
  • the drive part 10 and the functional part 11 are each formed in the same manner as described with reference to FIG FIGS. 1 and 2 has been described. In each case, the power transmission from the shaft to the key nut is different, as will be explained below.
  • the shaft 17 is arranged in the housing over its entire length.
  • a driving device 20a in the form of a splined toothing, which engages with a corresponding external toothing of a key nut 40.
  • the key nut 40 has a hexagonal insertion recess 21 in a widened head 41.
  • the head 41 extends partially into the housing 14.
  • a hollow shaft 42 connects.
  • These Hollow shaft has an engaging with the driving device 20a of the shaft 17 mating external spline. Between this external spline and the head 41 is a measuring section 25 with a torsion sensor 23, which is arranged sunk in the annular groove 42 of the hollow shaft.
  • the drive torque is transmitted from the shaft 17 to the hollow shaft 42 and from there via the measuring section 25 to the head 41 of the key nut 40.
  • the head 41 is recessed in the housing 14, so that the axial length of the power wrench can be kept extremely short.
  • Fig. 4 corresponds to that of Fig. 3 , but with the difference that the torsion sensor 23 is arranged on the inside of the hollow shaft 42. Electrical connection lines can be easily passed through the hollow shaft to the torsion sensor.
  • the shaft 17 projects out of the housing 14 towards the rear end.
  • a spline toothing 20 a which engages with a corresponding driving device 20 a on the outside of an intermediate shaft 44.
  • the intermediate shaft extends to the front through the housing 14 and it has in its front region an internal spline 45 and in its rear region a bearing bore 46th
  • the key nut 40 has a head 41 with a Einsteckaus predominantlyung 21. At this head, a hollow shaft 42 connects, on which a splined portion is provided, which engages with the spline 45 of the intermediate shaft 44.
  • the hollow shaft 42 is followed by a hollow shaft section 47, which is mounted in the bearing bore 46.
  • the measuring section 25 In the area between the two splines 20a and 45 is the measuring section 25, with the torsion sensor 23 mounted in an outer groove of the intermediate shaft 44.
  • Fig. 5 can also be modified so that the torsion sensor 23 is contained on the inner wall of the intermediate shaft 44 in a recess.
  • Fig. 6 shows an embodiment in which the key nut 40 is connected to a hollow shaft 42 which engages in an inner driving device 20a of the shaft 17.
  • the shaft 17 extends across the width of the housing 14, but does not substantially surmount this.
  • the key nut 40 forms with the hollow shaft 42 a structural unit, which can be pulled out of the shaft 17 in total.
  • the measuring section 25 is located on the keyed nut 40 in the area between the insertion recess 21 and the hollow shaft 42.
  • electrical wires 48 extend through the hollow shaft to a data transmission element 28, which operates in the same way as in FIG Fig. 2 is arranged, but here is located inside the hollow shaft 42.
  • the power wrench is equipped with a rotation angle measuring device 33 which has a code disk 34 seated on the hollow shaft 42 and a housing-fixed angle sensor 35.
  • Fig. 7 is different from that of Fig. 6 only in that the torsion sensor 23 is arranged on the outside of the measuring section 25. Through the hollow shaft 42 performs a bore 46 for carrying the coming of the torsion sensor cable 23 into the interior of the hollow shaft.
  • Fig. 8 shows an embodiment in which the key nut 40 is extended with a hollow shaft 42 which includes a measuring section 25, wherein the torsion sensor 23 is disposed inside the hollow shaft 42.
  • the hollow shaft 42 is connected to an intermediate shaft 49, which engages in an inner driving device 20 a of the shaft 17. Through the intermediate shaft 49, the cable coming from the torsion sensor 23 passes through to emerge at the rear.
  • Fig. 9 is different from the one of Fig. 8 only in that the torsion sensor 23 is arranged on the outside of the measuring section 25. From there, a bore 46 leads into the interior of the hollow shaft 42.

Claims (5)

  1. Visseuse à moteur commandée par pression, comprenant une partie de commande (10) et une partie fonctionnelle (11) qui présente un carter (14), lequel renferme un levier à cliquet entraîné par la partie de commande (10), le levier à cliquet entraînant un arbre (17) qui s'étend transversalement à travers le carter (14) et qui présente un dispositif d'entraînement (20 ; 20a), et un segment de mesure (25) qui détermine le couple,
    caractérisée en ce que le segment de mesure (25) est disposé au moins en partie dans la région entourée par le carter (14).
  2. Visseuse à moteur selon la revendication 1, caractérisée en ce qu'est prévu sur le carter (14) un capteur d'angle (35) qui détermine l'angle de rotation de l'arbre (17).
  3. Visseuse à moteur selon la revendication 2, caractérisée en ce que le capteur d'angle (35) est disposé dans un capuchon (36) qui entoure une extrémité de l'arbre (17).
  4. Visseuse à moteur selon la revendication 2 ou 3, caractérisée en ce que le capteur d'angle (35) coopère avec un codeur (34) qui est fixé sur l'extrémité de l'arbre (17).
  5. Visseuse à moteur selon l'une des revendications 1 à 4, caractérisée en ce que sur l'extrémité de l'arbre (17) est disposé un élément de transmission de données (28).
EP09168184.1A 2001-07-07 2002-07-03 Visseuse sous pression Expired - Lifetime EP2113341B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20111326U DE20111326U1 (de) 2001-07-07 2001-07-07 Hydraulischer Kraftschrauber
DE20112833U DE20112833U1 (de) 2001-07-07 2001-08-02 Druckbetriebener Kraftschrauber
EP02754816A EP1404491B1 (fr) 2001-07-07 2002-07-03 Visseuse fonctionnant sous pression et pourvue d'une section de mesure

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP02754816A Division EP1404491B1 (fr) 2001-07-07 2002-07-03 Visseuse fonctionnant sous pression et pourvue d'une section de mesure
EP02754816.3 Division 2002-07-03

Publications (3)

Publication Number Publication Date
EP2113341A2 EP2113341A2 (fr) 2009-11-04
EP2113341A3 EP2113341A3 (fr) 2009-12-23
EP2113341B1 true EP2113341B1 (fr) 2013-04-10

Family

ID=7959066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09168184.1A Expired - Lifetime EP2113341B1 (fr) 2001-07-07 2002-07-03 Visseuse sous pression

Country Status (3)

Country Link
EP (1) EP2113341B1 (fr)
DE (2) DE20111326U1 (fr)
ES (1) ES2416106T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006004380U1 (de) * 2006-03-21 2007-07-26 Wagner, Paul-Heinz Kraftschrauber
SE532128C2 (sv) * 2008-02-20 2009-10-27 Atlas Copco Tools Ab Mutterdragare med en kraftöverförande växel och rotationsavkännande organ, samt metod för fastställande växelns status
DE102008002065B4 (de) 2008-05-29 2017-03-09 Zf Friedrichshafen Ag Anordnung zum berührungslosen Erfassen eines Drehmomentes
ITMI20110286A1 (it) * 2011-02-25 2012-08-26 Scs Concept Italia S R L Chiave idraulica
EP3061571B1 (fr) 2015-02-27 2017-08-09 Atlas Copco Industrial Technique AB Clé de puissance à cliquet
KR102414904B1 (ko) * 2020-04-17 2022-07-01 (주)볼팅마스타 유압 토크 렌치
CN113894531A (zh) * 2020-07-06 2022-01-07 襄阳中车电机技术有限公司 一种圆螺母卡槽与止动垫圈扣片对齐装置及方法
CN113459025B (zh) * 2021-06-04 2023-04-28 宝武杰富意特殊钢有限公司 一种移动式互通双向排管气动板手专用装置及其使用方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2555982A1 (de) * 1975-12-12 1977-06-16 Karl H Ing Grad Kessler Drehmoment-messeinrichtung fuer montagemaschinen
DE3468358D1 (en) * 1983-08-09 1988-02-11 Staiger Mohilo & Co Gmbh Ratchet wrench for driving screws
US4794826A (en) * 1986-01-27 1989-01-03 Franks Neal S Hydraulic powered wrench
SE8802566L (sv) * 1988-07-08 1990-01-09 Atlas Copco Tools Ab Motordrivet verktyg och drivsystem foer detta
DE3922860A1 (de) * 1989-07-12 1991-01-17 Bosch Gmbh Robert Messeinrichtung zur bestimmung des drehmoments
DE9014037U1 (fr) * 1990-10-09 1990-12-20 Emuge-Werk Richard Glimpel Fabrik Fuer Praezisionswerkzeuge, 8560 Lauf, De
DE9408009U1 (de) * 1994-05-14 1994-08-11 Richard Abr Herder Kg Ratschenschlüssel für Winkelanzug mit optischer und akustischer Anzeige
DE29607207U1 (de) * 1996-04-20 1997-08-21 Wagner Paul Heinz Hydraulischer Kraftschrauber
DE29609668U1 (de) * 1996-05-31 1996-08-22 Wagner Paul Heinz Schraubgerät
DE19904773C1 (de) * 1999-02-05 2000-09-28 Raimund Wilhelm Intelligente Nuß

Also Published As

Publication number Publication date
EP2113341A3 (fr) 2009-12-23
DE20111326U1 (de) 2001-09-27
DE20112833U1 (de) 2002-11-14
EP2113341A2 (fr) 2009-11-04
ES2416106T3 (es) 2013-07-30

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