EP0233311A1 - Outil pour séparer une jointure de tuyau de deux tuyaux emboîtés les uns dans les autres - Google Patents

Outil pour séparer une jointure de tuyau de deux tuyaux emboîtés les uns dans les autres Download PDF

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Publication number
EP0233311A1
EP0233311A1 EP86110714A EP86110714A EP0233311A1 EP 0233311 A1 EP0233311 A1 EP 0233311A1 EP 86110714 A EP86110714 A EP 86110714A EP 86110714 A EP86110714 A EP 86110714A EP 0233311 A1 EP0233311 A1 EP 0233311A1
Authority
EP
European Patent Office
Prior art keywords
mandrel
tool
hook
counter plate
pipe
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.)
Withdrawn
Application number
EP86110714A
Other languages
German (de)
English (en)
Inventor
Albert Engert
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.)
Engert & Sohne
Original Assignee
Engert & Sohne
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 Engert & Sohne filed Critical Engert & Sohne
Publication of EP0233311A1 publication Critical patent/EP0233311A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling
    • Y10T29/49822—Disassembling by applying force
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53652—Tube and coextensive core

Definitions

  • the invention relates to a tool for releasing a pipe connection from two nested pipes, the outer pipe in the area of the pipe connection with an opening z. B. is provided with a slot.
  • the pipe connections of the generic type are produced in that the ends of the two pipes to be connected are pushed onto one another, which is possible in that in the end region the outer diameter of the one pipe is approximately the same or slightly less than the inner diameter of the other pipe. Pushing one on top of the other creates a clamp that creates a positive connection.
  • longitudinal slots are often made in the outer tube, specifically in the area of the subsequent tube connection, through which the sliding onto the later inner tube can be made considerably easier. Because of their simplicity, such pipe connections are widespread and are generally used and used in motor vehicles to connect the exhaust pipes to one another.
  • the invention has set itself the task of creating a tool with the help of which such a pipe connection can be solved quickly and without difficulty.
  • a mandrel and a pivotable at least one hook is attached to a printing device in such a way that a counterplate located at the hook end can be brought into the position opposite the mandrel.
  • the pressure device the structural implementation of which within the scope of the invention is initially arbitrary, has the effect that the mandrel attached to it can be displaced by applying appropriate forces.
  • the pivotable attachment of at least one hook has to be carried out in such a way that the counterplate located at the hook end can be brought into a position opposite the mandrel, ie the counterplate and mandrel then come to lie on a straight line. Due to the displaceability of the mandrel caused by the pressure device, its distance relative to the counterplate can be changed.
  • the thorn is to be dimensioned at least in the area of its tip so that it engages in the opening or slot in the outer tube.
  • the tool according to the invention is used in such a way that first the mandrel is inserted into the opening or slot of the outer tube, then the counterplate is brought into the position opposite the mandrel due to the pivotability of the hook, so that after actuation of the pressure device the mandrel comes to rest on the pipe connection from one side and the counter plate on the opposite side.
  • the mandrel penetrating the opening or slot of the outer tube deforms the inner tube in such a way that it detaches from the inner wall of the outer tube and reduces its cross section. In this way, the outer and inner tubes are separated, so that the two tubes inserted into one another can now be separated from one another and the tube connection is broken.
  • the deformation of the inner tube must or should be reversed when the inner tube is used again, which can happen, for example, by axially inserting and driving in a mandrel of corresponding outer diameter, which represents only a minor additional workload.
  • the threaded spindle consists of a shaft which is referred to as a spindle and which performs a longitudinal movement during rotation and which is mounted in a spatially fixed spindle nut.
  • the mandrel is located at one end of the spindle, against which there is a possibility of rotation, for example by forming a hexagon for the placement of a key.
  • the force exerted by the mandrel on the inner tube is then determined from the rotation used and the steepness of the thread.
  • the pressure device can also be implemented as a hydraulic or pneumatic cylinder, the mandrel then being molded onto the piston rod and the force being generated by applying a hydraulic or pneumatic medium to the cylinder.
  • a counterplate which is located on at least one hook, must be attached to the side of the pipe connection opposite the mandrel.
  • the pivotability ensures that the counterplate is placed around the pipe connection at the beginning of the work and again without further work after the work has ended can be removed.
  • the invention proposes in a further development the number 2, which allows the attachment of a hook on each side of the pipe connection and thus the generation of symmetrical force relationships.
  • the counter plate can be rigidly connected to one of the hooks or can be loosely engaged by both hooks when force is applied.
  • the pressure device is one leg of a pair of pliers, whereas the hook with the counterplate represents the other leg.
  • the mandrel is inserted into the opening or slot of the outer tube and the pliers are held in such a way that, when closing, the counterplate comes to rest on the side of the tube connection diametrically opposite the mandrel and upon further actuation the inner tube in the one already described Way deformed and the separation of the inner from the outer tube is thereby made.
  • the pressure forces are generated by actuating the pliers and transmitted to the mandrel or the counterplate by the lever arm thereof.
  • the design of the tool according to the invention as a pair of pliers allows particularly rapid working, since after the insertion of the mandrel both the counterplate is brought into position with a single movement and the deformation of the inner tube then takes place by continuing the movement while maintaining the pressure.
  • the printing device 1 shown in the drawing consists of a spindle nut 2, in which the spindle 3 is rotatably mounted via a thread. At its outer end, a hexagon 4 is formed on the spindle 3, on which a key is placed and the spindle can thereby be set in rotation. At its opposite end there is a mandrel 5 which, when the spindle 3 rotates, performs a forward or backward movement depending on the direction of rotation.
  • the pipe connection to be released is produced by plugging an outer 6 and inner pipe 4 into one another, both of which are shown in cross-section in the drawing and are therefore hatched.
  • the outer tube 6 has a slot 8 in which the mandrel 5 engages and the inner tube in the forward movement mediated by the pressure device 1 7 in the drawn or deformed in another way, thereby detaching from the outer tube 6, whereby the pipe connection is separable.
  • a right hook 9 and a left hook 10 are movably attached to the spindle nut 2 on the sides via pivot axes 11, so that they can be moved in the plane of the drawing.
  • These hooks 9, 10 engage behind a counter plate 12 on the edge, which in turn comes to rest on the pipe connection and directly on the outer pipe 6 from the opposite side.
  • the counter plate 12 is shaped complementary to the outer tube 6 and also to the ends of the hooks 9, 10.
  • the spindle is then set in rotation by placing a key on the hexagon 4 in such a way that the mandrel 5 is propelled and thereby deforms the inner tube 7 roughly in the manner shown in the drawing, the cross section of which narrows, thereby resulting in a reduction Detachment from the outer tube 6 occurs, so that the two pipes 6, 7 pulled apart and the pipe connection can be released.
  • the deformation resulting from the loosening of the tube connection can then be easily and simply reversed by axially pressing in another mandrel of corresponding diameter.
  • the invention proposes a tool with the aid of which a pipe connection produced by plugging two pipes into one another, as occurs in exhaust systems on motor vehicles, can be released quickly and with little effort.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP86110714A 1985-12-28 1986-08-02 Outil pour séparer une jointure de tuyau de deux tuyaux emboîtés les uns dans les autres Withdrawn EP0233311A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3546287 1985-12-28
DE3546287 1985-12-28

Publications (1)

Publication Number Publication Date
EP0233311A1 true EP0233311A1 (fr) 1987-08-26

Family

ID=6289663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110714A Withdrawn EP0233311A1 (fr) 1985-12-28 1986-08-02 Outil pour séparer une jointure de tuyau de deux tuyaux emboîtés les uns dans les autres

Country Status (2)

Country Link
US (1) US4782572A (fr)
EP (1) EP0233311A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662780A1 (fr) * 1990-06-01 1991-12-06 Hugues Francois Procede de deconditionnement de bouteilles de gaz industriel sous enceinte etanche resistante a la pression par destruction du robinet d'isolement.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1536553A (en) * 1923-01-27 1925-05-05 Enoch C Seale Roller-bearing-sleeve puller
DE2931057A1 (de) * 1978-07-31 1980-02-21 James R Godbe Rohrverformer
CA1094301A (fr) * 1978-04-27 1981-01-27 Wolfgang Bauer Outil de maintenance pour l'automobile

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2105954A (en) * 1936-08-01 1938-01-18 Walter H Rippe Pipe aligning tool
US4162570A (en) * 1978-02-27 1979-07-31 Caterpillar Tractor Co. Method and apparatus for separating a fitting from a tube
US4471516A (en) * 1978-07-31 1984-09-18 Godbe James R Boiler tube pulling method and apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1536553A (en) * 1923-01-27 1925-05-05 Enoch C Seale Roller-bearing-sleeve puller
CA1094301A (fr) * 1978-04-27 1981-01-27 Wolfgang Bauer Outil de maintenance pour l'automobile
DE2931057A1 (de) * 1978-07-31 1980-02-21 James R Godbe Rohrverformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662780A1 (fr) * 1990-06-01 1991-12-06 Hugues Francois Procede de deconditionnement de bouteilles de gaz industriel sous enceinte etanche resistante a la pression par destruction du robinet d'isolement.
WO1991019132A1 (fr) * 1990-06-01 1991-12-12 Nugues Francois Procede de deconditionnement de bouteilles de gaz industriel dans une enceinte etanche resistante a la pression

Also Published As

Publication number Publication date
US4782572A (en) 1988-11-08

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