DE2658869C2 - Mechanical drive for stepping ovens - Google Patents
Mechanical drive for stepping ovensInfo
- Publication number
- DE2658869C2 DE2658869C2 DE19762658869 DE2658869A DE2658869C2 DE 2658869 C2 DE2658869 C2 DE 2658869C2 DE 19762658869 DE19762658869 DE 19762658869 DE 2658869 A DE2658869 A DE 2658869A DE 2658869 C2 DE2658869 C2 DE 2658869C2
- Authority
- DE
- Germany
- Prior art keywords
- ovens
- cylinders
- lifting
- cam
- retraction
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/201—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace walking beam furnace
- F27B9/202—Conveyor mechanisms therefor
- F27B9/205—Conveyor mechanisms therefor having excentrics or lever arms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
- Reciprocating Conveyors (AREA)
Description
Gleichschrittöfen — auch Doppelschrittöfen genannt — werden mit hydraulischen oder mechanischen Antrieben gebaut. Die hydraulischen Antriebe stellen an die Wartung der Mechanik, Servohydraulik und Elektronik hohe Anforderungen. Mechanische Antriebe hingegen sind einfach und übersichtlich im Aufbau und stellen an die Wartung keine Probleme. Bei größeren Öfen mit schneller Transportgcschwindigkeit entstehen durch elastische Verformungen der Antriebselemente, durch Losen in den Verbindung.gelenken und bei Verwendung mehrerer Kurvenscheiben für Vorschub und Rückzug beider Hubbalken Schwingungen, die den korrekten Transport beeinträchtigen und die Lebensdauer der Antriebe herabsetzen können. Konstruktionsbedingt sind lange Verbindungsstangen zwischen Antrieb und Hubbalken, die bei Vorschub und Rückzug der Hubbalken mal auf Zug und ma! auf Druck beansprucht werden. Die Schwingungen, die bei der Druckbewegang entstehen, lassen sich schlecht durch entsprechende Dimensionierung vermeiden.Step-step ovens - also called double-step ovens - are equipped with hydraulic or mechanical drives built. The hydraulic drives are responsible for the maintenance of the mechanics, servohydraulics and electronics High demands. Mechanical drives, on the other hand, are simple and clear in structure and pose no maintenance problems. In larger ovens with faster transport speeds through elastic deformation of the drive elements, through looseness in the connection joints and during use several cams for feed and retraction of both walking beam vibrations that the correct Impair transport and reduce the service life of the drives. Due to the design are long connecting rods between the drive and the walking beam, which are used when the Lifting bar on the train and ma! are subject to pressure. The vibrations that occur during the pressure movement are difficult to avoid by appropriate dimensioning.
Die Balken selbst werden vielfach in Längsrichtungen unterteilt und mit Gelenken verbunden; das hierbei erforderliche Spiel verhindert ebenfalls ein ruckfreies Hin- und Herfahren der Balken.The beams themselves are often divided in longitudinal directions and connected with joints; the required here Play also prevents the bars from moving back and forth without jerking.
Zur Verringerung des Leistung beim Heben des Hubsystems werden vielfach Gegengewichte verwandt. Hierbei ergaben sich durch die Vergrößerung der Massen beim Senken Probleme, um in der bei hohen Fahrgeschwindigkeiten zur Verfügung stehenden kurzen Zeit, sicher absenken zu können.Counterweights are often used to reduce the performance when lifting the lifting system. Problems arose here due to the increase in the masses when lowering, in order to avoid problems when driving at high speeds available short time to be able to lower safely.
Zur Vermeidung vorstehender Probleme werden erfindungsgemäß nachstehende Maßnahmen vorgeschlagen: To avoid the above problems, the following measures are proposed according to the invention:
Gemäß Abb.l ist auf der Hauptantriebswelle (1) eine Kurvenscheibe (2) befestigt: das Hubbalkensystem (9) bewegt der Hebel (3) mit der Rolle (4) und das Hubbalkensystem (10) der Hebel (5) mit der Rolle (6). Die Kurvenrollen (4 + 6) sind um 180° versetzt angeordnet, so daß die Fahrbewegungen der Hubbalken (9 + 10) wechselweise erfolgen. Die Verbindung zu dem Hubbalken (9 + 10) stellen die Stangen (7 + 8) her. Die Zylinder (11 + 12). die mit einem Druckspeicher in Verbindung stehen und keine Steuerung benötigen, drücken gegen die Hubbalken (9 + 10) und sorgen dafür, daß die Rollen (4 + 6) bei jeder Fahrtrichtung auf der Kurvenscheibe anliegen. Hierbei sind alle Spkle der Lager, Rollen und Gelenke unwirksam. Somit steuert die Kurvenscheibe (2) Vor- und Rückfahrt beider Hubbalken (9 + tO). Eventuelle Fertigungstoleranzen bei der Scheibe führen nicht zu unterschiedlichen Bewegungen der Hubbalken (9 + 10).According to Fig. 1, a cam disk (2) is attached to the main drive shaft (1): the walking beam system (9) moves the lever (3) with the roller (4) and the walking beam system (10) moves the lever (5) with the roller ( 6). The cam rollers (4 + 6) are offset by 180 °, so that the movements of the lifting beams (9 + 10) take place alternately. The connection to the lifting beam (9 + 10) is made by the rods (7 + 8). The cylinders (11 + 12). which are connected to a pressure accumulator and do not require any control, press against the lifting beams (9 + 10) and ensure that the rollers (4 + 6) rest on the cam in every direction of travel. In this case, all the bearings, rollers and joints are ineffective. Thus, the cam (2) controls the forward and reverse travel of both lifting beams (9 + tO). Any manufacturing tolerances on the disc do not lead to different movements of the lifting beams (9 + 10).
Gemäß A b b. 2 ist auf der Welle (1) auc^ die Kur-According to A b b. 2 is on the shaft (1) also the course
to venscheibe (14) montiert. Diese steuert Heben und Senken der Hubbalken (9 -t· 10); der Hebel (15) mit der Rolle (16) und der Hebel (17) mit der Rolle (18) überträgt über die Zugstangen (19 + 20) die Bewegungen auf den Winkelhebel (13) und hebt und senkt hierbei dieto disk (14) mounted. This controls lifting and lowering the walking beam (9 -t x 10); the lever (15) with the The roller (16) and the lever (17) with the roller (18) transmit the movements via the tie rods (19 + 20) on the angle lever (13) and raises and lowers the
• 5 Hubbalken (9 + 10). Die Zylinder (11 + 12), die gegen die Hubbalken drücken, stützen sich mit der entgegengesetzten Seite auf die Hebel (15 + 17) ab, mildern den Druck der Rollen (16 + 18) auf die Kurvenscheibe (14) und verringern hierdurch die Antriebsleistung, ohne die Masse zu vergrößern.• 5 walking bars (9 + 10). The cylinders (11 + 12) that oppose press the lifting beams, support yourself with the opposite side on the levers (15 + 17), soften the Pressure of the rollers (16 + 18) on the cam disc (14) and thereby reduce the drive power without the To enlarge mass.
In Abb. 3 ist dargestellt, daß die Hubbalken (9 + 10) mit mehreren Gelenken (21) ausgerüstet sind. Die Zylinder (22 + 23) sind am Ende der Hubbalken als Zugzylinder angeordnet und wirken auf den Antrieb in gleicher Weise wie die Zylinder (11 + 12) nach Abb.l und 2. Durch diese Anordnung der Zylinder (22 + 23) werden zusätzlich auch die Lose der Hubbalken (9 + 10) ausgeschaltet. Die Abstützung der Zylinder (22 + 23) kann hierbei jedoch nicht gegen die Hebel (15 + 17) nach Ab3.2 erfolgen. Ein separater Zylinder (24) erfüllt hierbei die Aufgabe, den Druck der Rollen (16 + 18) — A b b. 2 — auf die Kurvenscheibe (14) — A b b. 2 — zu verringern.In Fig. 3 it is shown that the lifting beams (9 + 10) are equipped with several joints (21). The cylinders (22 + 23) are at the end of the lifting beam as pull cylinders arranged and act on the drive in the same way as the cylinders (11 + 12) according to Fig. 1 and 2. This arrangement of the cylinders (22 + 23) also eliminates the slack in the lifting beams (9 + 10). The cylinders (22 + 23) cannot be supported against the levers (15 + 17) From 3.2. A separate cylinder (24) met here the task of the pressure of the rollers (16 + 18) - A b b. 2 - on the cam (14) - A b b. 2 - to to decrease.
Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings
Claims (1)
die Kurvenrollen für den Vorschub und Rückzug beider Hubbalken durch hydraulische Zylinder angedrückt sind;only one cam disk is arranged for the advance and retraction of both lifting beams;
the cam rollers for the advance and retraction of both walking beams are pressed on by hydraulic cylinders;
die Zylinder zum Andrücken der Kurvenrollen für Vorschub und Rückzug gegen die Hubhebel abgestützt sind;the cam followers for the lift are relieved by hydraulic cylinders;
the cylinders for pressing the cam rollers for advancement and retraction are supported against the lifting levers;
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762658869 DE2658869C2 (en) | 1976-12-24 | 1976-12-24 | Mechanical drive for stepping ovens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762658869 DE2658869C2 (en) | 1976-12-24 | 1976-12-24 | Mechanical drive for stepping ovens |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2658869A1 DE2658869A1 (en) | 1978-06-29 |
DE2658869C2 true DE2658869C2 (en) | 1986-01-23 |
Family
ID=5996650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19762658869 Expired DE2658869C2 (en) | 1976-12-24 | 1976-12-24 | Mechanical drive for stepping ovens |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2658869C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29618325U1 (en) * | 1996-10-21 | 1998-02-26 | Kuka Schweissanlagen Gmbh | Transport device, in particular a lifting shuttle |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3141130A1 (en) * | 1981-10-16 | 1983-04-28 | Ruhrgas Ag, 4300 Essen | Walking beam conveyor |
-
1976
- 1976-12-24 DE DE19762658869 patent/DE2658869C2/en not_active Expired
Non-Patent Citations (1)
Title |
---|
NICHTS-ERMITTELT |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29618325U1 (en) * | 1996-10-21 | 1998-02-26 | Kuka Schweissanlagen Gmbh | Transport device, in particular a lifting shuttle |
Also Published As
Publication number | Publication date |
---|---|
DE2658869A1 (en) | 1978-06-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee | ||
8127 | New person/name/address of the applicant |
Owner name: RUHRGAS AG, 4300 ESSEN, DE |
|
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |