WO2013174713A1 - Cadre de mesure - Google Patents

Cadre de mesure Download PDF

Info

Publication number
WO2013174713A1
WO2013174713A1 PCT/EP2013/060139 EP2013060139W WO2013174713A1 WO 2013174713 A1 WO2013174713 A1 WO 2013174713A1 EP 2013060139 W EP2013060139 W EP 2013060139W WO 2013174713 A1 WO2013174713 A1 WO 2013174713A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
measuring frame
frame according
measuring
section
Prior art date
Application number
PCT/EP2013/060139
Other languages
German (de)
English (en)
Inventor
Thomas Kummer
Thomas Keuerleber
Hansueli JAKOB
Manfred BRENNER
Andreas STARZMANN
Maik BÜSING
Frank Wegehaupt
Rainer Wenzl
Original Assignee
Voith Patent Gmbh
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 Voith Patent Gmbh filed Critical Voith Patent Gmbh
Publication of WO2013174713A1 publication Critical patent/WO2013174713A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
    • G01L5/108—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means for measuring a reaction force applied on a single support, e.g. a glider

Definitions

  • the invention relates to a measuring frame, which can be positioned relative to a circumferential covering, in particular a covering for dewatering a paper, tissue or board web, with at least one sensor and a guide device. Furthermore, the invention relates to a measuring device with such a measuring frame.
  • the measuring frame disclosed here comprises guides which guide the covering against the sensor such that the sensor touches the covering or is pressed against the covering with a defined force.
  • the measuring frame is further arranged on a traversing device and can be pressed against the fabric by means of a swivel arm. For the measurement, it is necessary to move the measuring frame from a parking position to a measuring position. For this purpose, the measuring frame is first moved to a start position and then pressed by means of the swivel arm against the fabric. It must be ensured that the measuring frame with its guides always hits the clothing completely.
  • the measurement is carried out while the measuring frame is moved back and forth transversely to the direction of the clothing.
  • the measuring frame In order to achieve a uniform load on the clothing, it is necessary in practice to entangle the clothing. It may happen that the measuring frame unintentionally moved beyond the clothing edge, but not pivoted, is. Furthermore, it happens that the edges of the fabric set up in the direction of the measuring side of the fabric.
  • the covering can be damaged during the attempt to re-thread it.
  • the fabric can turn completely, so that there is a doubling of the string thickness. Beats e.g. a press felt around, it inevitably comes to a big crash in the press section.
  • the invention is inter alia based on the object of providing an improved measuring frame and a measuring device which ensure reliable threading.
  • the object is achieved by means of a measuring frame with the features of claim 1.
  • the invention proposes to design the guide device of the measuring frame in such a way that the guide device comprises at least one guide with two sections, a threading section and a guide section.
  • the guide section is to be understood as the part of the guide which is used during the measurement, so that the clothing is correctly positioned relative to the sensor.
  • the threading portion is a portion of the guide adapted to grip the string edge and move the string such that it is possible to slide the measuring frame onto the string surface without having to swivel the measuring frame.
  • the measuring frame is preferably used on the underside of the clothing, the clothing edge or the clothing must be raised so that the measuring frame can be pushed under the fabric. Furthermore, it is advantageous if the guide device consists of two guides with Auffädelabsacrificing, seen in the web running direction are arranged in front of and behind the sensor.
  • the guides on both sides of the guide portion may have a Auffä- deleting section.
  • the Auffädelabsacrificing and the guide portion are angled to each other, it has been found that it is particularly advantageous if the sections have an angle ⁇ of 120 ° to 150 ° to each other.
  • the guide consists of a metal tube or - round material, wherein the guide can be coated at least at the contact surfaces, with the fabric.
  • the coating may consist of one of the following materials:
  • the guide may consist of plastic tube or base material, which may be coated at least on the contact surfaces, with the covering, with Robaclass or Robalit.
  • a measuring device with a measuring frame with the features described above has the advantage over a measuring device according to the prior art that the measuring frame can be mounted directly on the traversing device, so that the joint to compensate for alignment inaccuracies, which are also caused by the pivoting mechanism omitted ,
  • FIG. 1 shows a schematic view of the measuring device in use.
  • the fabric 2, the properties of which are measured with such a measuring device may for example be a press felt, a wire or a composite fabric.
  • the measuring frame is usually pressed or dipped into the covering 9 and the covering is guided by means of the guides 5 mounted in front of and behind the sensor such that the sensor 2 is in secure contact with the covering 3.
  • the guides 5 mounted in front of and behind the sensor such that the sensor 2 is in secure contact with the covering 3.
  • at least the moisture and / or the permeability of the fabric 2 are measured.
  • the guide device 4 is therefore designed so that a safe tracking in the traverse direction is made possible when the measuring frame has once been moved beyond the edge of the fabric.
  • the guides 5 of the guide device 4 are made of a steel tube or a steel full material, each guide 5 has several sections, two Auffädelabroughe 6 and a guide portion. 7
  • the tube or round material may have a diameter of 15 to 30mm.
  • the Auffädelabites 6 and the guide portion 7 are angled ⁇ to each other at an angle of 120 ° to 150 °. Between the guide sections, at the Abwinkelstelle, a radius of 30mm to 50mm is provided and the Auffädelab- section is at least 85mm long.
  • a lifting device can be provided between the traversing device and the measuring frame, by means of which the measuring frame can be pressed against the clothing or immersed in it.
  • This can be a lever device or just a pneumatic cylinder.
  • the guides 5 are coated at least at the contact surfaces. For this purpose, a hard and wear-resistant ceramic or plastic coating is used.
  • the guides can be made of all-ceramic or all-plastic material.
  • the guides 5 are detachably mounted on the measuring frame 4 and are considered wear or spare part.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

L'invention concerne un cadre de mesure (1) pour la détermination de propriétés de tension, qui peut être positionné par rapport à une garniture tendue mobile (3) d'une machine de fabrication et/ou de traitement d'une bande de matériau, en particulier une bande de papier imprimable, de papier hygiénique ou de carton, comprenant au moins un capteur (2), et au moins un dispositif de guidage (4) au moyen duquel la garniture tendue peut être guidée de telle sorte que le capteur (2) se trouve en contact orthogonal avec la garniture tendue, le dispositif de guidage (4) comportant au moins un guide (5) avec deux sections, une section d'enfilage (6) et une section de guidage (7).
PCT/EP2013/060139 2012-05-22 2013-05-16 Cadre de mesure WO2013174713A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012208541 2012-05-22
DE102012208541.6 2012-05-22

Publications (1)

Publication Number Publication Date
WO2013174713A1 true WO2013174713A1 (fr) 2013-11-28

Family

ID=48468290

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/060139 WO2013174713A1 (fr) 2012-05-22 2013-05-16 Cadre de mesure

Country Status (1)

Country Link
WO (1) WO2013174713A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744602A1 (fr) * 1995-05-24 1996-11-27 Sulzer RàœTi Ag Palpeur et dispositif avec palpeur pour détecter une tension de fil
EP1182424A1 (fr) * 2000-08-25 2002-02-27 T.Sendzimir Inc. Appareil pour mesurer la planéité de bandes
DE10343515A1 (de) 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Messvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744602A1 (fr) * 1995-05-24 1996-11-27 Sulzer RàœTi Ag Palpeur et dispositif avec palpeur pour détecter une tension de fil
EP1182424A1 (fr) * 2000-08-25 2002-02-27 T.Sendzimir Inc. Appareil pour mesurer la planéité de bandes
DE10343515A1 (de) 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Messvorrichtung

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