ES2316972T3 - EMERGENCY DISCONNECTION ACTUATOR WITH INTERLOCK EQUIPMENT. - Google Patents

Abstract

Emergency disconnection actuator with interlocking equipment, - which includes a maneuvering element housing (600) that can be fixed to a mounting wall (400) and an actuating element (500), - the actuating element being connected ( 500) with the housing of the maneuvering element (600) such that it can move relatively therefrom from a first non-operated position to a second operated position, - the interlocking device having two interlocking elements (311, 312) which are connected through at least one common guide (320), - one of the interlocking elements (311, 312) being connected with the housing of the operating element (600) and, when the actuating element (500) is in the second actuation position, the position of both interlocking elements (311, 312) can be modified with each other by at least one common guide (320) such that they assume an interlocking position in which both interlocking elements interlocking (311, 312) can be interlocked, whereby the drive element (500) is secured against inadvertent movement out of the operating position, characterized in that the common guide (320) is configured as a hinge, whose Hinge shaft is arranged parallel to the drive direction of the drive element (500).

Description

Emergency disconnection actuator with equipment interlocking

The present invention relates to an actuator emergency disconnection with interlocking equipment according to the preamble of claim 1.

The controls and drives for processes and Automatically running machines are equipped for reasons of security of the so-called safety circuits. These present to in turn the so-called control devices for disconnection in emergency, which ensures that in case of failure, that is, when there is a breakdown or emergency situation, the process is interrupted with security. These emergency disconnection control devices, include the corresponding disconnect actuators in emergency configured as opening contacts.

Emergency disconnection actuators they are essentially composed of a housing of the element of maneuver with the maneuver contacts and an element of drive The drive element is then connected with the housing of the maneuvering element such that it can move relatively with respect to it from a first position of no driven to a second drive position. A contact of maneuver housed in the housing of the maneuvering element is configured as opening contact, the contact being open of maneuver in the operating position. According to document EN 60947-5-1, must be able to open in If this maneuver contact is missing, to interrupt the safety circuit

For simple operation, the element of drive is configured as far as possible with a large surface, for example in the form of a mushroom head, with which in case of missing a person can open the maneuver contact pressing on the mushroom head. The safety circuit is then interrupted and can only be activated again when the drive element is carried manually to a first position not activated.

Since after a case of failure, that is, by example after a forced disconnection of processes or also of machines that run automatically, they should not be new in operation without performing other checks of the missing, the corresponding measures to ensure that The safety circuit cannot be closed again without more.

This is known for example from document EP 0 800 188 B1 an emergency disconnect button that presents a drive element with a radially protruding cam and a handle notch to lock the element of drive The handle notch is configured and arranged then such that it can slide from a position of lock to an unlocked position and vice versa and that can be secured by a lock in the locked position. With the padlock is ensured that only an authorized person can activate this disconnect button again. This configuration known from EP 800 188 B1 for an actuator of emergency disconnection with interlocking equipment has no Notwithstanding the inconvenience that for actuator assurance emergency disconnection against a change of position no allowed, a high mechanical cost is required.

From US 3,182,143 A a known push button closure device. The device  Closing is planned to be installed on a Push Button. He device allows the user to maintain and secure the Push Button in a position of oppressed. This document discloses an actuator according to the preamble of claim 1.

Document DE 890 78 88 U indicates a device for connecting and disconnecting electrical appliances, presenting the device at least one slide that by means of a connection and disconnection cam and detection equipment associated with It has detection zones, it can slide from a connecting position to a disconnecting position and to the inverse

US 2,752,441 A is known from interlocking equipment for switches that interlock the switch in a previously defined position. For the so-called "Push Buttons" closing mechanisms are available rotating and linear.

From US 1,233,071 A a known drive cover, which can be used together with motor control switches or similar switches. A large surface area of drive for a stop button ("Stop-Button"), which is integrated into the switch. When acting on any part of the lid, it is caused a safe and immediate safety disconnection through the "Stop-Button."

From US 1,801,228 A a known safety control device for an electrical switch which has a hinged plate, which on the one hand is intended to operate "Push Buttons" to interrupt the connection circuit and on the other hand presents means to ensure the plate.

It is the task of the present invention to indicate a actuator for emergency disconnection easier with equipment interlocking

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This task is solved by an actuator of emergency disconnection with the distinctive features of claim 1.

Because the interlocking elements can be locked in the locked position, it is secured that the drive element does not switch from the operating position to the non-operating position and with it the safety circuit can be closed again for example after a forced disconnection. Rather it should be removed for it. firstly the interlocking, which for example can be done by padlocks. If you can only remove the interlocking one previously authorized person, then it is assured that in If the disturbance is missing and the reason for the interruption is will investigate and be removed before the closing of the safety circuit This is also secured after a case. lack of safe operation following the process or of machine.

The interlocking device configuration with only two interlocking elements, one of them being joined with the housing of the maneuvering element and the other through a guide common, of which there is at least one, with the first, allows a simple and thus economical configuration of an actuator emergency disconnection with interlocking equipment.

Advantageously it can be avoided by additional safety element the complete separation of the guide common and with this it is achieved that both elements of interlocking Because the interlocking equipment itself forms a separate unit that can be separated from the actuator of emergency disconnection, the equipment can be easily mounted interlocking in the emergency disconnection actuator and with it  It is also easy to use. Thus, in particular contrary to the emergency disconnection actuator known from EP document 0 800 183 B1, a smaller quantity of components is needed to the interlocking equipment, which also, contrary to the way of execution shown in EP 0 800 183 B1, are also  joined together so that they cannot be lost.

Other advantageous executions and preferred improvements of the invention can be taken from the subordinate claims.

The invention, as well as other examples, is will describe below in more detail based on the following figures. It is shown in:

Figure 1 a first example of an actuator of emergency disconnection with interlocking equipment for six padlocks,

figure 2 the first interlocking equipment example in exploded view,

Figure 3 side view of a second example of emergency disconnection actuator with interlocking equipment for three locks,

figure 4 the second example of the team of interlocking in a drive position secured with three padlocks,

figure 5 a first constructive way corresponding to the invention of a disconnection actuator in emergency with an interlocking equipment.

Figure 1 shows a first example of a emergency disconnection actuator with interlocking equipment. Emergency disconnect actuators are generally known and are essentially composed of a housing of the element of maneuver 600 with at least one opening contact 610 and the element actuator 500 for actuating the contact 610. In the controls and drives for running processes and machines automatically, the housing of the maneuvering element 600, by example in prominent position, is carried through a opening of a mounting wall 400, such as that of a control panel, and linked with it, for example by means of a Screw tightening connection not shown here in more detail. On the housing of the maneuvering element 600, the drive element 500, that is, both are connected between yes such that drive element 500 can move in axial direction on the housing of the maneuvering element 600 between A first and second position. This drive element 500 is constituted, in emergency disconnection actuators, usually as the so-called mushroom head, to enable a I handle as simple as possible. Clicking on the element of drive 500 in the direction of the housing of the maneuver 600, maneuver contact 610 arranged in the housing of the operating element that is configured as a contact opening. With the opening of the opening contact 610, deactivates the safety circuit used for operation machine or installation or process insurance. The contact of opening 610 is then configured such that in case of missing the contact necessarily opens by a mechanical movement of the drive element 500, that is, when pressed on the mushroom head Only once the drive element 500 is carried back manually to the first position of no activated, the safety circuit can be activated again.

But since in case of missing the circuit of security open necessarily for security reasons can only be closed again and thereby activated by people authorized, the corresponding means and measures must be provided such that in case of missing the drive element 500 led to the actuation position can be locked in this position. For this, as shown in figure 1, can present the emergency disconnection actuator interlocking equipment according to a first constructive form corresponding to the invention. The first constructive form corresponding to the invention then presents two interlocking elements 111 and 112, which are linked together by two common guides 120 integrated into interlocking elements 111 and 112. One part of the locking element 112 is then configured as rosette 132. Rosette 132 then has a shape corresponding to the outer dimensions of the housing of the maneuvering element, with which it can be placed beading on the housing of the maneuvering element 600 and with this can connect the interlocking element 112 with the housing of the operating element 600. Advantageously the rosette 132 is configured so that the interlocking element 112 can be rotated  at any angle around the axis of the housing of the operating element 600. Another part 122 of the connecting element 112 is configured such that it serves, together with a part 121 of the other interlocking element 111, as common guide 120. It is that is, part 121 configured as a guide pin of one of the interlocking elements 111 is conducted within part 122 configured as guide sleeve of the other element of interlocking 112. Guide pin 121 and guide sleeve 122 together they form a common guide 120, by which they are joined together both interlocking elements 111 and 112 and whereby the relative position of each other can be modified both interlocking elements 111 and 112. For operation of common guidance 120 is irrelevant in this regard if part 121 is configured as a guide pin and part 122 as a sleeve guide in which the guide pin is driven, or vice versa.

Both interlocking elements 111 and 112 can now be modified in relation to relative position with each other, such that when the drive element is in the second actuation position, both interlocking elements 111 and 112 can be interlocked in an interlocked position, to secure the drive element against a movement unnoticed out of the second drive position. For this is foreseen, as can be seen in figure 2, in both interlocking elements corresponding passage holes 141 and 142, which are found in the overlapping parts that serve as a common guide 120. If the element of drive, as shown in figure 1, in the second trigger position, then the positions can be modified of the connecting elements 111 and 112 with each other until the holes step 141 and 142 are located one above the other. Through these step holes can then be taken with the clamp of the locks correspondingly provided and the locks closed and thereby securing the drive element 500 in the second trigger position. This prevents an unauthorized person can take the drive element out of its second position and thus the safety conditions are avoided required

If both elements of interlock 111 and 112 must-see each other, must provide the corresponding constructive measures. So you can be provided, as shown in the representation of exploded view that appears in figure 2 of the interlocking equipment, in the guide pin 121 of the first interlocking element 111 additionally an element 123 configured as a latch abrupt, which is conducted in the corresponding guide (no shown) of guide sleeve 122 of the other element of interlocking 112. Both interlocking elements 111 and 112 they can then change their relative position each other until when disassembling both interlocking elements the abrupt closing latch collides on a stop (not shown) in the guide sleeve 122. To overcome this stop, that is, to separate both interlocking elements 111 and 112, should then press the latch latch in the present example abrupt, which would exceed the limit set as over lift.

The first example shown in Figure 1 and in Figure 2 for six locks is particularly suitable for protection switches while the second way construction shown in figure 3 for three locks in general it is sufficient for the security measures required to controls and drives for running processes and machines automatically. The second constructive form shown in the figure 3 shows the position of not activated, while figure 4 shows the same constructive position in the operating position of the drive element and secured by three locks. The second constructive form shown in figures 3 and 4 is composed in turn by a first 211 and a second 212 elements of interlocking, however presenting only a single common guide 220. The interlocking element 212 is in turn provided with a rosette 232, to join the same with the housing of the element maneuver 600. Parts of the first and second element of interlocking form guide pin 221 and guide sleeve 222, with corresponding holes 241 and 242 respectively.

Figure 5 shows a first form constructive corresponding to the invention of a team of interlocking, with both interlocking elements 311 and 312. The interlocking element 312 is connected in turn, as before interlocking elements 112 and 212, through one piece configured as a rosette with the maneuver element housing 600. Through common guide 320, which is configured as a hinge, it is possible a rotating movement of the elements of interlocking 311 and 312 thus joined. If you now find the drive element in drive position, then it can turn the interlocking element 311 configured as a hood on the common guide element 320 relative to the first interlocking element 312 and turning on the element of drive 500 until both can be locked in the interlocking position with locks housed in holes incidentally that they are one over another, and with that remains secured in this position.

The present invention does not have to be limited to the constructive form shown by way of example in figure 5. Rather, you can imagine, according to the claims, other forms constructive and they are included in the invention, always that the basic idea that through two elements of interlocking joined together 111, 112, 211, 212, 311, 312, se achieve assurance against simple reconnection and so So much economic. Thus, they can be used exactly the same for invention, instead of locks, also other interlocks that fulfill an assurance function equivalent to that of the padlocks In addition, they may be provided, instead of the equipment interlocking shown here, also other configurations of the guide.

The interlocking equipment parts can be for example metal or a shock resistant plastic or also of any other material that is suitable to guarantee the safety functions to be performed with the equipment interlocking However, obviously you have to pay attention always in all these executions to that the configuration of the interlocking elements corresponding to the invention are adapted to the shape of the drive elements, thereby an unauthorized activation is safely avoided, that is, the closing of the safety circuit and with it the new setting in functioning.

Claims (7)

1. Emergency disconnection actuator with interlocking equipment,

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that includes a maneuvering element housing (600) that can be fixed to a mounting wall (400) and a drive element (500),

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with the element of drive (500) with the maneuver element housing (600) such that it can move relatively relative to it from a first position not operated until a second position powered,

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presenting the interlocking equipment two interlocking elements (311, 312) that are joined through of at least one common guide (320),

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one of the elements of interlocking (311, 312) with the housing of the operating element (600) and, when the drive element (500) is in the second actuation position, the position of both elements of interlocking (311, 312) can be modified with each other by less a common guide (320) such that they assume a position of interlocking in which both interlocking elements (311, 312) can be interlocked with each other, so that the drive element (500) is insured against an inadvertent movement towards out of the drive position,

characterized in that the common guide (320) is configured as a hinge, whose hinge axis is arranged parallel to the driving direction of the driving element (500). 2. Emergency disconnection actuator according to claim 1, presenting one of the elements of interlocking (311) at least one guide pin (321) and the other interlocking element (312) at least one guide sleeve (322), the guide pin (321) and the guide sleeve being configured (322) such that together they form a common guide. 3. Emergency disconnection actuator according to claim 2, presenting the guide pin (321) at least one assurance element that is configured and arranged such that the same, together with another insurance element in the guide sleeve (322), prevents complete separation of the guide common (320). 4. Emergency disconnection actuator according to one of claims 1 to 3, the interlocking element being connected (312) with the housing of the maneuvering element (600) such that it can rotate around the axis of the housing of the maneuvering element (600). 5. Emergency disconnection actuator according to one of the preceding claims 1 to 4, in which the interlocking elements (311, 312) are made of metal or shock resistant plastic. 6. Emergency disconnection actuator according to one of claims 1 to 5, Being provided in the two elements of interlocking (311, 312) at least respective through holes (341,  342) for the clamp of a padlock, such that in the position of interlocking a passage hole, of which there is at least one (341), of one of the interlocking elements (311), is found completely over a passage hole (342), of which at least there is one, of the other interlocking element (312). 7. Emergency disconnection actuator according to claim 6, presenting each of the two elements of interlocking (311, 312) three or six through holes for the interlocking with three or six padlocks.