EP1049834B1 - Safety device for the control elements of a manually operated soil compaction roller - Google Patents

Safety device for the control elements of a manually operated soil compaction roller Download PDF

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Publication number
EP1049834B1
EP1049834B1 EP99903613A EP99903613A EP1049834B1 EP 1049834 B1 EP1049834 B1 EP 1049834B1 EP 99903613 A EP99903613 A EP 99903613A EP 99903613 A EP99903613 A EP 99903613A EP 1049834 B1 EP1049834 B1 EP 1049834B1
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EP
European Patent Office
Prior art keywords
coupling
drive lever
roller
safety
safety arrangement
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
EP99903613A
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German (de)
French (fr)
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EP1049834A1 (en
Inventor
Hermann Schennach
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.)
Wacker Construction Equipment AG
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Wacker Construction Equipment AG
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Publication date
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Publication of EP1049834A1 publication Critical patent/EP1049834A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
    • E01C19/282—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows self-propelled, e.g. with an own traction-unit
    • E01C19/283—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows self-propelled, e.g. with an own traction-unit pedestrian-controlled, e.g. with safety arrangements for operator
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/26—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles
    • E01C19/262—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles pedestrian-controlled, e.g. with safety arrangements for operator
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20012—Multiple controlled elements
    • Y10T74/20018—Transmission control
    • Y10T74/20049—Transmission controlled by flexible cable
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20012—Multiple controlled elements
    • Y10T74/20018—Transmission control
    • Y10T74/2014—Manually operated selector [e.g., remotely controlled device, lever, push button, rotary dial, etc.]

Definitions

  • the invention relates to a safety arrangement for a hand-held soil compaction roller.
  • rollers for pedestrian operation the operator runs after the roller and overrides it a handle attached to a drawbar, which is a driving lever for the Setting the driving speed and direction carries.
  • the roller will usually via a hydraulic unit in the forward and backward direction, that means moving towards the operator.
  • a safety arrangement is used in such soil compaction rollers to advance the roller turn off when the roller reverses, d. that is, in the direction of the Operator's roller moves and the operator no longer moves backwards move or the roller can not avoid.
  • This problem can for example, occur when the operator reverses with the roller an obstacle is running, panicking and forgetting to stop the roller or move in the opposite direction.
  • an actuator is therefore provided through which it can be registered that the roller against an obstacle, for example the operator drives.
  • the safety instructions point for this purpose, a control element that is between an operating position and a dangerous position movable and when touched by the operator the operating position can be moved to the dangerous position and thereby the roller brings to a standstill.
  • a safety arrangement is known from OS-DE 41 29 915 A1, in which the driving speed and direction can be adjusted using a driving lever.
  • the guide of the roller is vertical via an additional, lever-like swiveling handle causes from a swiveled basic position can be swung down into a working position in which its free In the end, it is still clearly above the horizontal defined by its pivot axis located. Otherwise, by swinging down the handle Travel levers held in the zero position by spring loading the desired deflected position fixed positively.
  • swiveling up of the handle for example when touching an obstacle
  • the form-fitting connection is made automatically by the handle lifted, whereby the drive lever is spring-loaded in the zero position arrives and brings the roller to a standstill. Moving the roller in opposite directions Direction is possible by further actuation of the drive lever.
  • EP-A-0 593 063 is a control device for a vibratory roller known, which is an emergency shutdown device for stopping the travel drive in the event of danger.
  • the emergency shutdown device a button which, in a dangerous situation, drives the drive switches for a temporary reversal of the direction of travel.
  • the invention has for its object a safety arrangement for to specify a handheld soil compactor roller that is a reliable
  • the roller can also be stopped when the operator presses the drive lever holds on convulsively, and on the other hand also drives forward allows the roller away from the operator when the safety arrangement has been triggered by driving the roller against the operator.
  • the safety arrangement in addition to the known, often designed as a claw coupling first coupling between a driving lever and one connected to a control line Adjustment element provided a second coupling.
  • the first coupling is through Relocation of a safety control element from an operational to a dangerous position solvable.
  • the second coupling remains, can but only transmit forces from the control lever to the control element when the Driving lever is moved in the forward direction.
  • This has the advantage that at Driving the roller against an obstacle and actuating the safety control through the obstacle, e.g. B. the operator's body, the first coupling is lifted, whereby the actuating element is spring-loaded in the zero position arrives and brings the roller to a standstill.
  • the second coupling preferably also has a positive coupling on, in which the control element carries a driver against which one the drive lever provided stop can be struck. This ensures that only forces in one direction, namely the forward direction are transferable to the roller.
  • a hand bracket 2 On a on a drawbar, not shown, of a soil compaction roller attached holding plate 1, a hand bracket 2 is attached, via which the soil compacting roller is feasible in a conventional manner.
  • a driving lever 3 In the curvature of the Hand bracket 2, a driving lever 3 is pivotally arranged on an axis of rotation 4.
  • the driving lever 3 carries an extension 5, designed to be embraced by the operator at the same time can, if the operator holds the hand strap 2.
  • the drive lever 3 is in Swiveling forward or backward direction, which is indicated by arrows V and R is marked.
  • a first coupling that can be seen in particular in FIG. 3 and serves as the first coupling Claw clutch 6 is the movement of the driving lever 3 on an actuating element 7 transferable.
  • the actuating element 7 can also be pivoted on the axis of rotation 4 arranged and at a lever end 8 with the end of a as Control line serving actuator 9 pivotally coupled.
  • Actuation 9 designed as a Bowden cable is a drive, not shown controllable for the roller.
  • the drive is usually a hydraulic pump, the pumping capacity of which is by means of actuation 9 is adjustable.
  • 9 can be used for actuation, for example a control linkage can also be used.
  • the actuating element 7 is provided on one side with the claw coupling 6 and is acted on the other side by a spring 10, which is is supported against a shoulder 11 on the axis of rotation 4.
  • a safety actuator is also arranged, the essentially from a baffle 12, a plunger 13 and a guide 14 exists.
  • the baffle 12 is firmly connected to the plunger 13 and is by a spring 15 supported against the guide 14 in an operating position held in which the control by the safety actuator is not being affected.
  • the plunger 13 is axially movable in the guide 14 added so that the plunger 13 with the baffle 12 from the operating position against the action of the spring 15 in a dangerous position is when the impact pot 12 z. B. against the body of the operator or another Obstacle drives.
  • the danger position is shown in Figure 2. It can be seen that the Baffle 12 with the plunger 13 in the forward direction V of the roller, d. H. in Direction of the dog clutch 6 has been shifted. By intrusion a conical tip 16 formed on the plunger 13 between the two Halves of the dog clutch 6, d. H. between the actuator 7 and the Driving lever 3, the actuator 7 against the action of the spring 10 axially relocated, whereupon the dog clutch 6 disengages. Thereby the flow of force between the drive lever 3 and the control element 7 is canceled.
  • the actuating element 7 is by a spring device, not shown acted on in such a way that it is not loaded by the drive lever 3 automatically pivoted to the zero position, which corresponds to a standstill of the roller.
  • Figure 5 shows the drive lever 3 in the forward position and the safety control with the baffle 12 in the operating position. Accordingly, Figure 6 shows the Driving lever 3 in reverse position. The position of the drive lever 3 is about the respectively closed claw coupling 6 on the control element 7 and Actuator 9 transmitted so that reliable control of the roller drive is possible.
  • Figure 7 shows a state in which the roller is in the reverse position located driving lever 3 was first in reverse and then An obstacle has been determined via the baffle 12.
  • the plunger 13 is has been pushed against the dog clutch 6 and has released it. Accordingly has the spring-biased actuator 7 in the zero position pivoted and the drive stopped via the actuation 9.
  • the machine is in the state shown in Figure 7 at a standstill.
  • the safety arrangement can of course also except for rollers can be used with other machines that are operated in pedestrian mode become.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Soil Working Implements (AREA)

Description

Die Erfindung betrifft eine Sicherheitsanordnung für eine handgeführte Bodenverdichtungswalze.The invention relates to a safety arrangement for a hand-held soil compaction roller.

Bei derartigen Bodenverdichtungswalzen, insbesondere Walzen für den Mitgängerbetrieb, läuft der Bediener hinter der Walze her und steuert sie über einen an einer Deichsel befestigten Handgriff, der einen Fahrhebel für die Einstellung der Fahrgeschwindigkeit und -richtung trägt. Die Walze wird üblicherweise über eine Hydraulikeinheit in Vorwärts- und Rückwärtsrichtung, das heißt auf den Bediener zu, bewegt.With such soil compaction rollers, in particular rollers for pedestrian operation, the operator runs after the roller and overrides it a handle attached to a drawbar, which is a driving lever for the Setting the driving speed and direction carries. The roller will usually via a hydraulic unit in the forward and backward direction, that means moving towards the operator.

Eine Sicherheitsanordnung, häufig auch als Totmannschaltung bezeichnet, dient bei derartigen Bodenverdichtungswalzen dazu, den Vortrieb der Walze abzuschalten, wenn sich die Walze rückwärts, d. h., in Richtung des die Walze führenden Bedieners bewegt und dieser sich selbst nicht mehr rückwärts bewegen bzw. der Walze nicht ausweichen kann. Dieses Problem kann beispielsweise auftreten, wenn der Bediener mit der Walze rückwärts gegen ein Hindernis läuft, in Panik gerät und dadurch vergißt, die Walze abzustoppen bzw. in entgegengesetzte Richtung zu bewegen.A safety arrangement, often referred to as a dead man's switch, is used in such soil compaction rollers to advance the roller turn off when the roller reverses, d. that is, in the direction of the Operator's roller moves and the operator no longer moves backwards move or the roller can not avoid. This problem can for example, occur when the operator reverses with the roller an obstacle is running, panicking and forgetting to stop the roller or move in the opposite direction.

Bei bekannten Sicherheitsanordnungen ist daher ein Stellteil vorgesehen, über das registriert werden kann, daß die Walze gegen ein Hindernis, beispielsweise den Bedienungsmann, fährt. Die Sicherheitsanordnungen weisen dazu ein Stellteil auf, das zwischen einer Betriebsstellung und einer Gefahrstellung verschieblich und bei Berührung durch den Bedienungsmann aus der Betriebs- in die Gefahrstellung verschiebbar ist und dadurch die Walze zum Stillstand bringt.In known safety arrangements, an actuator is therefore provided through which it can be registered that the roller against an obstacle, for example the operator drives. The safety instructions point for this purpose, a control element that is between an operating position and a dangerous position movable and when touched by the operator the operating position can be moved to the dangerous position and thereby the roller brings to a standstill.

Dazu wird in Normen gefordert, daß nach dem Ansprechen der Sicherheitseinrichtung der Anhalteweg der Walze kleiner sein muß als der verbleibende Schaltweg des Stellteils nach dem Abschalten der Walze, um ein Einquetschen des Bedienungsmannes zu vermeiden. To this end, standards require that after the safety device has responded the stopping distance of the roller must be smaller than the remaining one Switching path of the actuator after the roller has been switched off in order to pinch it to avoid the operator.

Aus der OS-DE 41 29 915 A1 ist eine Sicherheitsanordnung bekannt, bei der die Fahrgeschwindigkeit und -richtung über einen Fahrhebel einstellbar ist. Die Führung der Walze wird über einen zusätzlichen, hebelartig vertikal schwenkbaren Handgriff bewirkt, der aus einer hochgeschwenkten Grundstellung in eine Arbeitsstellung herabschwenkbar ist, in der sich sein freies Ende noch deutlich oberhalb der durch seine Schwenkachse gelegten Horizontalen befindet. Durch Herabschwenken des Handgriffs wird der ansonsten durch Federbeaufschlagung in Nullstellung gehaltene Fahrhebel in der gewünschten ausgelenkten Stellung formschlüssig fixiert. Bei Hochschwenken des Handgriffs, was beispielsweise bei Berührung eines Hindernisses durch den Handgriff automatisch erfolgt, wird die formschlüssige Verbindung aufgehoben, wodurch der Fahrhebel federbeaufschlagt in Nullstellung gelangt und die Walze zum Stillstand bringt. Ein Bewegen der Walze in entgegengesetzter Richtung ist durch weitere Betätigung des Fahrhebels möglich.A safety arrangement is known from OS-DE 41 29 915 A1, in which the driving speed and direction can be adjusted using a driving lever. The guide of the roller is vertical via an additional, lever-like swiveling handle causes from a swiveled basic position can be swung down into a working position in which its free In the end, it is still clearly above the horizontal defined by its pivot axis located. Otherwise, by swinging down the handle Travel levers held in the zero position by spring loading the desired deflected position fixed positively. When swiveling up of the handle, for example when touching an obstacle The form-fitting connection is made automatically by the handle lifted, whereby the drive lever is spring-loaded in the zero position arrives and brings the roller to a standstill. Moving the roller in opposite directions Direction is possible by further actuation of the drive lever.

Bei derartigen Lösungen ist das Erreichen der Nullstellung bzw. das Einstellen der Vorwärtsrichtung stets durch Betätigen des Fahrhebels möglich. Man ging dabei davon aus, daß der Bedienungsmann bei Berührung eines rückwärtigen Hindernisses den Fahrhebel freigibt bzw. daß die Haltekraft des Bedieners geringer ist als die durch das Sicherheits-Stellteil ausgelöste Rückstellkraft auf den Fahrhebel. Es wurde jedoch festgestellt, daß die Haltekraft der Hand, insbesondere in einer Paniksituation, enorm groß werden kann, so daß der Bediener den Fahrhebel nicht losläßt und durch Weiterfahren der Walze eine erlaubte maximale Kraft durch das den Körper des Bedienungsmanns berührende Sicherheits-Stellteil von 230 Newton überschritten werden kann. Eine höhere Belastung als die zulässige maximale Kraft kann jedoch bereits zu erheblichen Verletzungen des Bedieners führen.With solutions of this type, the zeroing or setting is achieved the forward direction is always possible by operating the drive lever. It was assumed that the operator would touch one rear obstacle releases the driving lever or that the holding force of the operator is less than that triggered by the safety control element Restoring force on the drive lever. However, it was found that the holding force hand, especially in a panic situation can, so that the operator does not let go of the drive lever and by continuing the roller has a maximum force allowed by the operator's body Touching safety control element of 230 Newtons exceeded can be. A higher load than the permissible maximum force can However, this can already lead to considerable injuries to the operator.

Um dieses Problem zu beheben, wurden Lösungen vorgeschlagen, bei denen ungeachtet der Kraft, mit der der Bediener den Fahrhebel festhält, durch das das Hindernis erkennende Sicherheits-Stellteil eine formschlüssige Verbindung zwischen Fahrhebel und der zu dem Antrieb führenden Steuerleitung entriegelt wird. Die federbeaufschlagte Steuerleitung springt dadurch in Stoppstellung. Ein Nachteil dieses Prinzips ist es jedoch, daß die formschlüssige Verbindung zwischen Fahrhebel und Steuerleitung erst dann wiederhergestellt werden kann, wenn das durch das Hindernis verschobene Sicherheits-Stellteil wieder seine Ausgangs- bzw. Betriebsstellung erreicht hat, so daß eine erneute Kopplung zwischen Fahrhebel und Steuerleitung möglich wird. Erst dann ist ein Bewegen der Walze in entgegengesetzter Richtung möglich. Dazu muß sich jedoch der Bedienungsmann vorher aus seiner eingeklemmten Lage befreit haben, da andernfalls das Slcherhelts-Stellteil nicht In die Betriebsstellung zurückführbar ist.To solve this problem, solutions have been proposed in which regardless of the force with which the operator holds the drive lever the safety control element recognizing the obstacle has a positive connection between the control lever and the control line leading to the drive is unlocked. This causes the spring-loaded control line to jump in stop position. A disadvantage of this principle, however, is that the positive Only then will the connection between the control lever and the control line be restored if the safety control element moved through the obstacle has reached its starting or operating position again, so that a new coupling between the control lever and control line is possible becomes. Only then is the roller moved in the opposite direction possible. To do this, however, the operator must first get out of his pinched position, otherwise the Slcherhelts actuator cannot be returned to the operating position.

Aus der EP-A-0 593 063 ist eine Steuereinrichtung für eine Vibrationswalze bekannt, die eine Notabschalteinrichtung zum Stillsetzen des Fahrantriebs im Gefahrfall aufweist. Um zu vermeiden, daß die Bedienperson zwischen Walze und einem Hindernis eingeklemmt wird, weist die Notabschalteinrichtung einen Taster auf, welcher in einer Gefahrensituation den Fahrantrieb für eine vorübergehende Umkehr der Fahrtrichtung schaltet.From EP-A-0 593 063 is a control device for a vibratory roller known, which is an emergency shutdown device for stopping the travel drive in the event of danger. To avoid that the operator between Roller and an obstacle is jammed, the emergency shutdown device a button which, in a dangerous situation, drives the drive switches for a temporary reversal of the direction of travel.

Der Erfindung liegt die Aufgabe zugrunde, eine Sicherheitsanordnung für eine handgeführte Bodenverdichtungswalze anzugeben, die ein zuverlässiges Abstoppen der Walze auch dann ermöglicht, wenn der Bediener den Fahrhebel krampfhaft festhält, und die andererseits auch dann ein Vorwärtsfahren der Walze weg von dem Bediener ermöglicht, wenn die Sicherheitsanordnung durch Fahren der Walze gegen den Bediener ausgelöst worden ist.The invention has for its object a safety arrangement for to specify a handheld soil compactor roller that is a reliable The roller can also be stopped when the operator presses the drive lever holds on convulsively, and on the other hand also drives forward allows the roller away from the operator when the safety arrangement has been triggered by driving the roller against the operator.

Erfindungsgemäß wird die Aufgabe durch eine Sicherheitsanordnung mit den Merkmalen von Patentanspruch 1 gelöst. Vorteilhafte Weiterentwicklungen der Erfindung sind den abhängigen Ansprüchen zu entnehmen.According to the invention, the task is performed using a safety arrangement solved the features of claim 1. Advantageous further developments the invention can be found in the dependent claims.

Bei der erfindungsgemäßen Sicherheitsanordnung ist außer der an sich bekannten, häufig als Klauenkupplung ausgeführten ersten Kopplung zwischen einem Fahrhebel und einem mit einer Steuerleltung verbundenen Stellelement eine zweite Kopplung vorgesehen. Die erste Kopplung ist durch Verlagern eines Sicherheits-Stellteils aus einer Betriebs- in eine Gefahrstellung lösbar. Die zweite Kopplung bleibt jedoch auch dann bestehen, kann aber nur Kräfte des Fahrhebels auf das Stellelement übertragen, wenn der Fahrhebel in Vorwärtsrichtung bewegt wird. Dies hat den Vorteil, daß bei Fahren der Walze gegen ein Hindernis und Betätigen des Sicherheits-Stellteils durch das Hindernis, z. B. den Körper des Bedieners, die erste Kopplung aufgehoben wird, wodurch das Stellelement federbeaufschlagt in Nullstellung gelangt und die Walze zum Stillstand bringt. Damit sich der Bediener aus seiner Notsituation befreien kann, kann er den zunächst noch in Rückwärtsfahrstellung stehenden Fahrhebel In Vorwärtsstellung bringen. Die Bewegung des Fahrhebels In Vorwärtsrichtung wird über die zweite Kopplung auf das Stellelement und damit über die Steuerleitung auf den Antrieb der Walze übertragen, so daß sich diese in Vorwärtsrichtung, weg von dem Bediener bewegt und diesen freigibt. In the safety arrangement according to the invention, in addition to the known, often designed as a claw coupling first coupling between a driving lever and one connected to a control line Adjustment element provided a second coupling. The first coupling is through Relocation of a safety control element from an operational to a dangerous position solvable. However, the second coupling remains, can but only transmit forces from the control lever to the control element when the Driving lever is moved in the forward direction. This has the advantage that at Driving the roller against an obstacle and actuating the safety control through the obstacle, e.g. B. the operator's body, the first coupling is lifted, whereby the actuating element is spring-loaded in the zero position arrives and brings the roller to a standstill. So that the operator can get out of his emergency situation, he can still in Move the drive lever in the reverse position to the forward position. The movement of the drive lever in the forward direction is via the second Coupling to the control element and thus via the control line to the drive transferred to the roller so that it is in the forward direction, away from the operator moves and releases.

Die zweite Kopplung weist vorzugsweise ebenfalls eine formschlüssige Kupplung auf, bei der das Stellelement einen Mitnehmer trägt, gegen den ein an dem Fahrhebel vorgesehener Anschlag anschlagbar ist. Dadurch wird gewährleistet, daß nur Kräfte in einer Richtung, nämlich der Vorwärtsrichtung der Walze übertragbar sind.The second coupling preferably also has a positive coupling on, in which the control element carries a driver against which one the drive lever provided stop can be struck. This ensures that only forces in one direction, namely the forward direction are transferable to the roller.

Diese und weitere Vorteile und Merkmale der Erfindung werden nachfolgend unter Zuhilfenahme der begleitenden Figuren näher erläutert.These and other advantages and features of the invention are set out below explained with the help of the accompanying figures.

Es zeigen:

  • Figur 1 eine Perspektivansicht eines Handgriffs für eine Bodenverdichtungswalze mit der erfindungsgemäßen Sicherheitsanordnung in Betriebsstellung;
  • Figur 2 den Handgriff aus Figur 1 mit der Sicherheitsanordnung in Gefahrstellung;
  • Figur 3 eine Vorderansicht der erfindungsgemäßen Sicherheitsanordnung entsprechend der Stellung von Figur 1;
  • Figur 4 eine Vorderansicht der Sicherheitsanordnung gemäß der Stellung von Figur 2;
  • Figur 5 eine Seitenansicht des Handgriffs mit der erfindungsgemäßen Sicherheitsanordnung und einem Fahrhebel in Vorwärtsstellung;
  • Figur 6 eine Seitenansicht von Figur 1 mit dem Fahrhebel in Rückwärtsstellung:
  • Figur 7 eine Seitenansicht von Figur 2, mit Fahrhebel in Rückwärtsstellung und Sicherheits-Stellteil in Gefahrstellung;
  • Figur 8 eine Seitenansicht des Handgriffs mit Fahrhebel in Vorwärtsstellung und Sicherheits-Stellteil in Gefahrstellung.
    • Show it:
  • Figure 1 is a perspective view of a handle for a soil compaction roller with the safety arrangement according to the invention in the operating position;
  • Figure 2 shows the handle of Figure 1 with the safety arrangement in the dangerous position;
  • Figure 3 is a front view of the safety arrangement according to the invention corresponding to the position of Figure 1;
  • Figure 4 is a front view of the safety arrangement according to the position of Figure 2;
  • FIG. 5 shows a side view of the handle with the safety arrangement according to the invention and a driving lever in the forward position;
  • FIG. 6 shows a side view of FIG. 1 with the drive lever in the reverse position:
  • FIG. 7 is a side view of FIG. 2, with the drive lever in the reverse position and the safety control element in the dangerous position;
  • Figure 8 is a side view of the handle with driving lever in the forward position and safety control in the dangerous position.

    • Die Figuren zeigen im wesentlichen die gleiche Anordnung, jedoch mit unterschiedlicher Stellung der Elemente. Daher wird der Aufbau der erfindungsgemäßen Sicherheitsanordnung zunächst anhand der Figuren 1 und 3 beschrieben. Danach folgt anhand der weiteren Figuren eine Beschreibung der Funktionsweise.The figures show essentially the same arrangement, but with a different arrangement Position of the elements. Therefore, the structure of the invention Safety arrangement first described with reference to Figures 1 and 3. This is followed by a description of the Functionality.

    An einer an einer nicht dargestellten Deichsel einer Bodenverdichtungswalze befestigten Halteplatte 1 ist ein Handbügel 2 befestigt, über den die Bodenverdichtungswalze in herkömmlicher Weise führbar ist. In der Wölbung des Handbügels 2 ist ein Fahrhebel 3 auf einer Drehachse 4 schwenkbar angeordnet. Aus ergonomischen Gründen trägt der Fahrhebel 3 einen Fortsatz 5, der so gestaltet ist, daß er von dem Bediener gleichzeitig umfaßt werden kann, wenn der Bediener den Handbügel 2 festhält. Der Fahrhebel 3 ist in Vorwärts- bzw. Rückwärtsrichtung verschwenkbar, was durch Pfeile V und R gekennzeichnet ist.On a on a drawbar, not shown, of a soil compaction roller attached holding plate 1, a hand bracket 2 is attached, via which the soil compacting roller is feasible in a conventional manner. In the curvature of the Hand bracket 2, a driving lever 3 is pivotally arranged on an axis of rotation 4. For ergonomic reasons, the driving lever 3 carries an extension 5, designed to be embraced by the operator at the same time can, if the operator holds the hand strap 2. The drive lever 3 is in Swiveling forward or backward direction, which is indicated by arrows V and R is marked.

    Über eine insbesondere in Figur 3 erkennbare, als erste Kopplung dienende Klauenkupplung 6 ist die Bewegung des Fahrhebels 3 auf ein Stellelement 7 übertragbar. Das Stellelement 7 ist ebenfalls auf der Drehachse 4 verschwenkbar angeordnet und an einem Hebelende 8 mit dem Ende einer als Steuerleitung dienenden Betätigung 9 verschwenkbar gekoppelt. Über die z.B. als Bowdenzug ausgeführte Betätigung 9 ist ein nicht dargestellter Antrieb für die Walze ansteuerbar. Bei dem Antrieb handelt es sich üblicherweise um eine Hydraulikpumpe, deren Pumpleistung mittels der Betätigung 9 verstellbar ist. Anstelle eines Bowdenzugs kann für die Betätigung 9 beispielsweise auch ein Steuergestänge verwendet werden.Via a first coupling that can be seen in particular in FIG. 3 and serves as the first coupling Claw clutch 6 is the movement of the driving lever 3 on an actuating element 7 transferable. The actuating element 7 can also be pivoted on the axis of rotation 4 arranged and at a lever end 8 with the end of a as Control line serving actuator 9 pivotally coupled. About the e.g. Actuation 9 designed as a Bowden cable is a drive, not shown controllable for the roller. The drive is usually a hydraulic pump, the pumping capacity of which is by means of actuation 9 is adjustable. Instead of a Bowden cable, 9 can be used for actuation, for example a control linkage can also be used.

    Das Stellelement 7 ist auf einer Seite mit der Klauenkupplung 6 versehen und wird auf der anderen Seite durch eine Feder 10 beaufschlagt, die sich gegen einen Absatz 11 an der Drehachse 4 abstützt.The actuating element 7 is provided on one side with the claw coupling 6 and is acted on the other side by a spring 10, which is is supported against a shoulder 11 on the axis of rotation 4.

    Dadurch wird die Klauenkupplung 6 federbeaufschlagt geschlossen gehalten und die auf den Fahrhebel 3 wirkende Handkraft des Bedieners formschlüssig auf das Stellelement 7 und die Betätigung 9 übertragen.As a result, the claw coupling 6 is kept closed in a spring-loaded manner and the operator's manual force acting on the driving lever 3 is positive transferred to the control element 7 and the actuator 9.

    An der Halteplatte 1 ist weiterhin ein Sicherheits-Stellteil angeordnet, das im wesentlichen aus einem Pralltopf 12, einem Stößel 13 und einer Führung 14 besteht. Der Pralltopf 12 ist mit dem Stößel 13 fest verbunden und wird durch eine gegen die Führung 14 abgestützte Feder 15 in einer Betriebststellung gehalten, in der die Steuerung durch das Sicherheits-Stellteil nicht beeinflußt wird. Der Stößel 13 ist jedoch in der Führung 14 axial beweglich aufgenommen, so daß der Stößel 13 mit dem Pralltopf 12 aus der Betriebstellung gegen die Wirkung der Feder 15 in eine Gefahrstellung verlagerbar ist, wenn der Pralltopf 12 z. B. gegen den Körper des Bedieners oder ein anderes Hindernis fährt.On the holding plate 1, a safety actuator is also arranged, the essentially from a baffle 12, a plunger 13 and a guide 14 exists. The baffle 12 is firmly connected to the plunger 13 and is by a spring 15 supported against the guide 14 in an operating position held in which the control by the safety actuator is not being affected. However, the plunger 13 is axially movable in the guide 14 added so that the plunger 13 with the baffle 12 from the operating position against the action of the spring 15 in a dangerous position is when the impact pot 12 z. B. against the body of the operator or another Obstacle drives.

    Die Gefahrstellung wird in Figur 2 gezeigt. Dabei ist erkennbar, daß der Pralltopf 12 mit dem Stößel 13 in Vorwärtsrichtung V der Walze, d. h. in Richtung der Klauenkupplung 6 verlagert worden ist. Durch das Eindringen einer am Stößel 13 ausgebildeten konischen Spitze 16 zwischen die beiden Hälften der Klauenkupplung 6, d. h. zwischen das Stellelement 7 und den Fahrhebel 3 wird das Stellelement 7 gegen die Wirkung der Feder 10 axial verlagert, woraufhin die Klauenkupplung 6 außer Eingriff gelangt. Dadurch wird der Kraftfluß zwischen dem Fahrhebel 3 und dem Stellelement 7 aufgehoben. Das Stellelement 7 ist durch eine nicht dargestellte Federeinrichtung derart beaufschlagt, daß es bei Nichtbelastung durch den Fahrhebel 3 selbsttätig in Nullstellung verschwenkt, die einem Stillstand der Walze entspricht. Wenn daher die Klauenkupplung 6 geöffnet wird, verschwenkt das Stellelement 7 automatisch in seine Nullstellung und stoppt über die Betätigung 9 die Fahrt der Walze. Die geöffnete Klauenkupplung 6 ist auch in Figur 4 gezeigt, woraus auch deutlich erkennbar ist, daß der Stößel 13 das Stellelement 7 von dem Fahrhebel 3 abhebt.The danger position is shown in Figure 2. It can be seen that the Baffle 12 with the plunger 13 in the forward direction V of the roller, d. H. in Direction of the dog clutch 6 has been shifted. By intrusion a conical tip 16 formed on the plunger 13 between the two Halves of the dog clutch 6, d. H. between the actuator 7 and the Driving lever 3, the actuator 7 against the action of the spring 10 axially relocated, whereupon the dog clutch 6 disengages. Thereby the flow of force between the drive lever 3 and the control element 7 is canceled. The actuating element 7 is by a spring device, not shown acted on in such a way that it is not loaded by the drive lever 3 automatically pivoted to the zero position, which corresponds to a standstill of the roller. Therefore, when the dog clutch 6 is opened, it pivots Control element 7 automatically in its zero position and stops by actuation 9 the travel of the roller. The open claw coupling 6 is also in figure 4 shown, which is also clearly visible that the plunger 13 Control element 7 lifts off the driving lever 3.

    Mit dem Stillstand der Walze ist jedoch noch nicht das Problem gelöst, daß der Bediener möglicherweise bereits zwischen dem Pralltopf 12 und einem Hindernis eingeklemmt ist. Um sich zu befreien, kann der Bediener daher erfindungsgemäß den Fahrhebel 3 in Vorwärtsrichtung V verschwenken. Bei Erreichen der Nullstellung des Stellelements 7 gelangt eine als zweite Kopplung dienende formschlüssige Kupplung in Eingriff, die durch einen an dem Fahrhebel 3 befestigten Zapfen 17 und einen am Stellelement 7 ausgebildeten Mitnehmer 18 gebildet wird. Der sich in Axialrichtung der Drehachse 4 erstreckende Zapfen 17 ist so lang, daß er den Mitnehmer 18 auch dann erreichen kann, wenn das Stellelement 7 durch den Stößel 13 ausgerückt ist.With the standstill of the roller, however, the problem is not solved that the operator may already be between the baffle 12 and one Obstacle is jammed. To free yourself, the operator can therefore According to the invention, pivot the drive lever 3 in the forward direction V. at When the actuating element 7 reaches the zero position, it is a second coupling Serving positive coupling engaged by one on the Driving lever 3 attached pin 17 and one formed on the actuator 7 Driver 18 is formed. The axis 4 in the axial direction extending pin 17 is so long that it can also reach the driver 18 can, if the actuator 7 is disengaged by the plunger 13.

    Bei Vorwärtsbewegen des Fahrhebels 3 drückt daher der Zapfen 17 gegen die Fläche des Mitnehmers 18 und verschwenkt das Stellelement 7 in Vorwärtsrichtung. Die Bewegung des Stellelements 7 wird entsprechend über die Betätigung 9 an den Antrieb der Walze weitergeleitet, wodurch sich die Walze in Vorwärtsrichtung von dem eingklemmten Bediener wegbewegt.When the driving lever 3 moves forward, the pin 17 therefore presses against the surface of the driver 18 and pivots the actuator 7 in the forward direction. The movement of the control element 7 is correspondingly about the actuation 9 forwarded to the drive of the roller, whereby the Roller moved forward from the pinched operator.

    Statt der in Figur 1 gezeigten Anordnung der zweiten Kopplung ist es selbstverständlich auch möglich, daß das Stellelement 7 einen Zapfen trägt, gegen den der Fahrhebel 3 bei Vorwärtsbewegung anschlägt. Im Normalbetrieb ist es darüberhinaus zweckmäßig, daß bei eingerasteter Klauenkupplung 6 keine Berührung zwischen dem Zapfen 17 und dem Mitnehmer 18 erfolgt. Statt eines wie in den Figuren 3 und 4 gezeigten, in den Fahrhebel 3 eingesetzten Zapfens 17 kann selbstverständlich auch ein anderer Anschlag am Fahrhebel 3 ausgebildet sein.Instead of the arrangement of the second coupling shown in FIG. 1, it goes without saying also possible that the actuator 7 carries a pin against which the driving lever 3 strikes when moving forward. Is in normal operation it is furthermore expedient that when the claw coupling 6 is engaged, none Contact between the pin 17 and the driver 18 takes place. Instead of one as shown in Figures 3 and 4, used in the drive lever 3 Pin 17 can of course also be another stop on the driving lever 3 be formed.

    Zum besseren Verständnis wird die oben beschriebene Funktionsweise der Sicherheitsanordnung nachfolgend unter Bezugnahme auf die in den Figuren 5 bis 8 dargestellten Seitenansichten erläutert.For better understanding, the functionality of the Safety arrangement below with reference to those in the figures 5 to 8 illustrated side views.

    Figur 5 zeigt den Fahrhebel 3 in Vorwärtsstellung und das Sicherheits-Stellteil mit dem Pralltopf 12 in Betriebsstellung. Entsprechend zeigt Figur 6 den Fahrhebel 3 in Rückwärtsstellung. Die Stellung des Fahrhebels 3 wird über die jeweils geschlossene Klauenkupplung 6 auf das Stellelement 7 und die Betätigung 9 übertragen, so daß eine zuverlässige Steuerung des Walzenantriebs möglich ist.Figure 5 shows the drive lever 3 in the forward position and the safety control with the baffle 12 in the operating position. Accordingly, Figure 6 shows the Driving lever 3 in reverse position. The position of the drive lever 3 is about the respectively closed claw coupling 6 on the control element 7 and Actuator 9 transmitted so that reliable control of the roller drive is possible.

    Figur 7 zeigt einen Zustand, bei dem die Walze durch den in Rückwärtsstellung befindlichen Fahrhebel 3 zunächst in Rückwärtsfahrt war und dann über den Pralltopf 12 ein Hindernis festgestellt worden ist. Der Stößel 13 ist gegen die Klauenkupplung 6 geschoben worden und hat diese gelöst. Dementsprechend hat sich das federvorgespannte Stellelement 7 in Nullstellung verschwenkt und über die Betätigung 9 den Antrieb stillgesetzt. Die Maschine befindet sich in dem in Figur 7 gezeigten Zustand im Stillstand.Figure 7 shows a state in which the roller is in the reverse position located driving lever 3 was first in reverse and then An obstacle has been determined via the baffle 12. The plunger 13 is has been pushed against the dog clutch 6 and has released it. Accordingly has the spring-biased actuator 7 in the zero position pivoted and the drive stopped via the actuation 9. The machine is in the state shown in Figure 7 at a standstill.

    Bei dem in Figur 8 gezeigten Zustand hat der Bediener den Fahrhebel 3 in Vorwärtsrichtung V verschwenkt, so daß der Zapfen 17 gegen den Mitnehmer 18 des Stellelements 7 anschlagen konnte. Durch Weiterbewegen des Fahrhebels 3 in Vorwärtsrichtung wird der entsprechende Steuerbefehl über die Betätigung 9 an den Antrieb der Walze weitergeleitet und diese in Vorwärtsrichtung angetrieben. Durch Wegfahren der Walze vom Körper des Bedieners kann der Pralltopf 12 wieder in seine ursprüngliche Betriebsstellung gelangen, woraufhin der Stößel 13 aus der Klauenkupplung 6 verschoben wird und sich die Klauenkupplung 6 wieder schließen kann. Damit ist der ursprüngliche Betriebszustand wiederhergestellt.In the state shown in FIG. 8, the operator has the drive lever 3 in Forward direction V pivoted so that the pin 17 against the driver 18 of the actuator 7 could strike. By moving the Driving lever 3 in the forward direction is the corresponding control command the actuator 9 forwarded to the drive of the roller and this in the forward direction driven. By moving the roller away from the operator's body the baffle pot 12 can be returned to its original operating position arrive, whereupon the plunger 13 moved out of the dog clutch 6 is and the dog clutch 6 can close again. So that's the restored to its original operating state.

    Die Sicherheitsanordnung kann selbstverständlich außer bei Walzen auch bei anderen Maschinen eingesetzt werden, die im Mitgängerbetrieb gefahren werden.The safety arrangement can of course also except for rollers can be used with other machines that are operated in pedestrian mode become.

    Claims (7)

    1. Safety arrangement for a manually controlled ground compaction roller comprising
      a drive lever (3) which determines the direction and speed of travel and which is movable forwards (V) and backwards (R) with respect to the direction of travel of the roller;
      an adjusting element (7) coupled to the drive lever (3) via a first coupling (6) for communicating the drive lever position to an actuating device (9), wherein the adjusting element (7) is prestressed, when not influenced by the drive lever (3), in an intermediate position corresponding to zero speed;
      a safety operating element (12, 13) which is disposed in such a manner as to be movable between an operating position and a hazard position and which element is prestressed in the operating position, by means of which element the first coupling (6) can be separated in the hazard position;
      characterised by
      a second coupling (17, 18) of the drive lever (3) and adjusting element (7), by means of which forces are transferable when the first coupling (6) is separated only during forward motion of the drive lever (3).
    2. Safety arrangement as claimed in Claim 1, characterised in that the first and/or the second coupling comprises a positive coupling.
    3. Safety arrangement as claimed in Claim 2, characterised in that the first coupling (6) comprises a claw coupling.
    4. Safety arrangement as claimed in Claim 3, characterised in that the adjusting element (7) is axially displaceable on a rotational axis (4) of the drive lever (3) against the effect of a spring (10).
    5. Safety arrangement as claimed in Claim 4, characterised in that the adjusting element (7) is axially displaced by means of the safety operating element (12, 13) in such a way that the claw coupling opens when the safety operating element (12, 13) reaches its hazard position.
    6. Safety arrangement as claimed in any one of the preceding claims, characterised in that the second coupling (17, 18) comprises an entrainer on the adjusting element (7), against which a stop which is provided on the drive lever (3) can be contacted.
    7. Safety arrangement as claimed in Claim 6, characterised in that the stop is a peg which is attached to the drive lever (3) and which extends in parallel with the rotational axis (4) of the drive lever (3).
    EP99903613A 1998-01-20 1999-01-08 Safety device for the control elements of a manually operated soil compaction roller Expired - Lifetime EP1049834B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE19802007A DE19802007C1 (en) 1998-01-20 1998-01-20 Safety arrangement for the operating elements of a hand-held soil compaction roller
    DE19802007 1998-01-20
    PCT/EP1999/000079 WO1999037862A1 (en) 1998-01-20 1999-01-08 Safety device for the control elements of a manually operated soil compaction roller

    Publications (2)

    Publication Number Publication Date
    EP1049834A1 EP1049834A1 (en) 2000-11-08
    EP1049834B1 true EP1049834B1 (en) 2003-04-02

    Family

    ID=7855158

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99903613A Expired - Lifetime EP1049834B1 (en) 1998-01-20 1999-01-08 Safety device for the control elements of a manually operated soil compaction roller

    Country Status (6)

    Country Link
    US (1) US6382383B1 (en)
    EP (1) EP1049834B1 (en)
    JP (1) JP3980830B2 (en)
    DE (2) DE19802007C1 (en)
    ES (1) ES2193682T3 (en)
    WO (1) WO1999037862A1 (en)

    Families Citing this family (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    JP3825462B2 (en) * 2003-06-18 2006-09-27 三笠産業株式会社 Vibrating roller reverse safety device
    US7194929B2 (en) * 2003-12-01 2007-03-27 Jungheinrich Aktiengesellschaft Pole for hand pallet truck
    GB2411565B (en) * 2004-03-03 2007-02-21 Grey Technology Ltd Trimming apparatus
    DE102004042058A1 (en) * 2004-08-31 2006-03-02 Bomag Gmbh Safety device for a vibration plate
    SE527879C2 (en) * 2004-11-30 2006-07-04 Dynapac Compaction Equip Ab Press Jumper
    US20100124476A1 (en) * 2008-11-14 2010-05-20 Darryl Berlinger Cylinder cart having a retention hook
    US9334612B2 (en) 2013-10-04 2016-05-10 Wacker Neuson Production Americas Llc Control lever assembly for walk-behind compaction roller
    EP3006624B1 (en) * 2014-10-06 2019-07-03 Wacker Neuson Production Americas LLC Control lever assembly for walk-behind compaction roller
    JP6371239B2 (en) * 2015-02-27 2018-08-08 株式会社日立建機カミーノ Hand guide roller

    Family Cites Families (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US3147818A (en) * 1962-06-08 1964-09-08 Rotary Hoes Ltd Reverse-drive safety device for a walktype tractor or cultivator
    DE3215391A1 (en) * 1982-04-24 1983-10-27 Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen Roller for soil tamping, having a hydrostatic travelling drive
    DE8402033U1 (en) * 1984-01-25 1984-04-26 Dynapac Maskin AB, 17122 Solna Self-propelled hand-held machine
    DE3432083A1 (en) * 1984-08-31 1986-03-06 Behringwerke Ag, 3550 Marburg PASTEURIZED, ISOAGGLUTININ-FREE FACTOR VIII PREPARATION AND METHOD FOR THE PRODUCTION THEREOF
    JPS62199821U (en) * 1986-06-10 1987-12-19
    DE4129915A1 (en) * 1991-04-03 1992-10-08 Weber Maschinentechnik Gmbh Safety device for power driven compacting roller - is controlled by spring-loaded handle which locks engine control lever
    DE59305486D1 (en) * 1992-10-14 1997-03-27 Meflex Telecontrol Gmbh & Co Control device for a hand-held machine with traction drive

    Also Published As

    Publication number Publication date
    EP1049834A1 (en) 2000-11-08
    JP2002501135A (en) 2002-01-15
    US6382383B1 (en) 2002-05-07
    DE59904842D1 (en) 2003-05-08
    ES2193682T3 (en) 2003-11-01
    WO1999037862A1 (en) 1999-07-29
    DE19802007C1 (en) 1999-11-11
    JP3980830B2 (en) 2007-09-26

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