FI12907Y1 - Locking arrangement and guardrail element for a guardrail in a service bridge of a fiber product machine and a guardrail in a service bridge of a fiber product machine - Google Patents

Abstract

A locking arrangement for a handrail bridge railing of a fibrous product machine in a handrail element (11) of a handrail (10) and comprising a housing (12) fitted for a second handrail element (11 ') in which the handrail (10) is arranged to be locked, openable a locking mechanism (13) for releasably locking the handrail (10) from said housing (12) to said second handrail element (11 '), characterized in that the locking mechanism (13) includes a latch (14) pivotally arranged in the locking arrangement (20) so that when locking 14) is adapted to give way to the second handrail element (11 ') to bring it into the housing (12) and return to the second handrail element (11') to close the housing (12) after the second handrail element (11 ') has passed the latch (14), upon unlocking, the latch (14) is adapted to recede from the path of the second handrail element (11 ') to open the housing (12) and detach the second handrail element (11') from the housing (12), and wherein the handrail element (11) of the handrail (10) is fitted into the locking system arrangement (20) and includes a space (15) for evasive movement (V) arranged on the latch (14). In addition, protection requirements 2-6.

Description

LOCKING ARRANGEMENT AND RAILING ELEMENT FOR FIBER PRODUCT MACHINE TREATMENT BRIDGE FOR RAILING AND FIBER PRODUCT MACHINE MACHINE BRIDGE

The invention relates to a locking arrangement for a handrail bridge of a fiber product machine in a handrail element of a handrail and comprising - a housing fitted for another handrail element in which the handrail is arranged to be locked, - an openable locking mechanism for locking the handrail from its housing to said second handrail .

In addition, the invention also relates to a handrail element for a handrail of a treatment bridge of a fiber product machine and a handrail of a treatment bridge of a fiber product machine.

The fiber product machine uses maintenance bridges on the side of the machine, for example, to perform various maintenance operations on the machine during operation and downtime. For example, treatment bridges can be on two levels and can cover mainly the entire length of the machine. These include a floor care level and railings on both sides along the length of the machine. The care level and the handrails can be assembled from elements of different lengths, which allow them to be removed locally, for example in connection with maintenance operations.

S 5 Especially during maintenance outages, 2 parts of the maintenance level have to be removed from the treatment bridges in order to be able to replace the elongate machine parts from the side. In this case, safety railings or © 30 barriers are required to prevent access to the point where the treatment level has been removed on the treatment bridge. The safety barriers are openable N-lockable and also have a lock that prevents their S opening unintentionally.

Typically, a safety barrier arranged between the edge rails is pivotally articulated at one end to a first edge rail, for example on the machine side. Correspondingly, at one end, the safety barrier can be detachably locked to a transverse edge railing, which may be the outer edge railing of the treatment bridge. The locking arrangement is typically a housing at the end of a safety barrier adapted to receive a handrail handrail belonging to a treatment bridge. The housing may be in the shape of a downwardly opening U-profile. In this case, it can be pressed over the railing of the treatment bridge. The safety barrier, in turn, is locked to the handrail by means of a spring pin. In this case, the U-slot has holes and the handrail tube has a corresponding hole for the pin, through which it is passed by threading. As a result, the housing attaches to the rail. However, the problem with the locking solution described above is the very difficult usability of the locking. It is difficult to get the holes in the U-slot and the handrail to hit in place so that the pin can be threaded smoothly into the hole. The problem is repeated when the pin should also hit the hole on the other side of the handrail tube. In addition, if the U-slot is knocked, the holes may not be hit at all. The possible locations of the safety booms on the treatment bridge are also fixed, O because the arrangement requires holes in the handrails. In this case, it 5 acts as part of the locking arrangement.

Q E Due to problems with the current implementation, the locking pin is very easily left unlocked. In this case, the safety barrier = is only seemingly in place, but not locked. In this case, for example, in the event of a load on the safety barrier, it may open, 5 which may result in a fall from the treatment bridge and a serious accident.

It is an object of the present invention to provide a locking arrangement for a handrail bridge railing of a fiber product machine which is simple in function and structure and which is easy and quick to use. It is a further object of the invention to provide a handrail element for the handrail of a treatment bridge of a fiber product machine and a handrail of a treatment bridge of a fiber product machine, which are easy and quick to use. The characteristic features of the locking arrangement according to the invention are set out in protection claim 1 and in the protection requirements 5 and 6 of the handrail element and handrail, respectively. The locking arrangement according to the invention only requires user intervention when unlocking. The procedure is very simple. In it, the latch belonging to the locking mechanism is lifted out of the way of the handrail element, which has been locked in the housing belonging to the locking arrangement. With the invention, the locking takes place completely automatically. The user places a housing fitted to the safety barrier on the handrail element, whereby the latch automatically dodges the handrail element and returns to the locking position by gravity. Thus, there is no need to touch the latch at all when making the lock. Thanks to the invention, the position of the safety barrier on the treatment bridge is also not location-dependent, because it is not necessary to provide holes in the handrail element to which the housing is locked. All parts of the locking arrangement O are connected to the safety barrier. In addition, according to the invention, the locking arrangement 5 does not include loose parts and the making of the locking 2 or its opening does not require tools. Thus, the = locking arrangement according to the invention simplifies the implementation of the locking in many ways. Other additional advantages achieved by the invention will become apparent from the description and the specific features of the appended claims.

The invention, which is not limited to the embodiment shown below, will be described in more detail with reference to the accompanying drawings, in which

Figure 1 shows an example of a treatment bridge of a fiber product machine equipped with guardrails, Figure 2 shows the guardrail shown in Figure 1, Figure 3a shows an example of a guardrail locking arrangement, Figure 3b shows the locking arrangement shown in Figure 3a seen from above, Figure 4 shows the locking arrangement of Figures 3a and 3b seen obliquely and Figure 5 shows the locking arrangement in a situation where the guardrail is being opened.

Figure 1 shows an example of a treatment bridge 101 of a fiber product machine 100, in which a locking arrangement 20, a railing element 11 and a railing 10 according to the invention, also referred to as a safety railing in this application, can be used.

In Figure 1, the fiber product machine 100 itself is shown for reference only to illustrate its position relative to the treatment bridge 101.

The fiber product machine 100 is behind one edge rail 102.2 of the treatment bridge 101.

The treatment bridge 101 often includes a floor 103, called the treatment level, and its two side edges 102.1, 102.2 in the machine direction MD of the fiber product machine 100.

One of the edge rails 102.1 is in turn on the opposite edge of the treatment bridge 101 to the fiber producer 100.

The floor 103 is typically a plate-like O element.

The edge rails 102.1, 102.2 consist of a handrail 104 at their upper edge and a kick strip 105 at the lower edge. Between them 2 there may be, for example, a glass panel 107, intermediate tubes 106 = or the gap may also be open.

The treatment bridge 101 also has a frame c 30 (not shown), on which the floor 103 and the edge railings 102.1, = 102.2 are arranged.

One skilled in the art will appreciate that the treatment N bridge 101 may be formed of floor and curb elements. 5 Their lengths do not necessarily correspond, for example, between the floor 103 and the edge railings 102.1, 102.2 and / or between the edge railings 102.1, 102.2 of the opposite edges.

The floor 103 of the treatment bridge 101 is intended for people to walk and be present and the handrails 102.1, 102.2 in turn prevent exits from the treatment bridge 101, such as people on the treatment bridge 101 from falling off the treatment bridge 101. 5 Both the treatment railings 101.1, 102.2 and the floor 103 can be removed from the treatment bridge 101 e.g. in connection with the maintenance of the fiber product machine 100. The floor 103 with its edge railings 102.1, 102.2 can be removed from the treatment bridge 101, for example as one modular part. Then there is a need for guardrails. They can prevent access to the part of the treatment bridge 101 from which, for example, its floor 103 has been locally removed and thus poses a risk of falling to persons working on the treatment bridge 101.

Figure 2 shows an example of a guardrail, more generally a guardrail 10, such as was also shown in duplicate in the treatment bridge 101 of Figure 1. Here, the guardrail comprises two handrail elements, an upper and a lower handrail element 11, 11.2. Both handrail elements 11, 11.2 are telescopic, so that they go to treatment bridges of different widths.

101. In the embodiment shown, the handrail elements have two extensions. Between the handrail elements 11, 11.2 there may be a panel connecting them at least in part along the length of the guardrail - 25 111, which now has a danger sign. In addition, the handrail elements 11, 11.2 are connected at one end 21.1 by a vertical beam 25. 5 At the end of the lower handrail element 11.2 there may be a stop 26, from which> the handrail 10 rests on the edge rail 102.1 (Fig. 1). x a © 30 A guardrail is attached at one end 21.2 of one side of a fiber product machine, typically a fiber product machine, to a side rail N 102.2 of that side. Joining takes place via articulation 108. Thanks to the articulation 108, the guardrail can be opened and closed. When closed, the guardrail runs between the edge railings 102.1, 102.2. When open, the guardrail is detached from the edge guardrail on the side opposite to the edge guard 102.2 on the articulation 108 side.

102.1 and turned through the articulation 108 horizontally so as to allow passage along it along the treatment bridge 101. When fully open, the guardrail is parallel to the edge railing 102.2 to which it is pivotally articulated. This is also the position of the guardrail when the treatment bridge 101 is passable if the guardrail is in the treatment bridge 101 in a fixed position. At the end opposite to the articulation 108, the safety railing has a locking arrangement 20 for the railing 10 of the treatment bridge 101 of the fiber product machine 100. More specifically, the locking arrangement 20 is for locking the safety railing to the second edge railing 102.1. In the case of the embodiment shown, it is a first handrail 102.1 further away from the fiber product machine 100, and more particularly, a handrail 104 for the handrail 102.1. The locking arrangement is in the handrail element of the handrail 10, more particularly

11. The locking arrangement 20 comprises a housing 12 and a locking mechanism 13 arranged in connection with the housing 12. The housing 12 is arranged in a locking arrangement 20 for a second handrail element 11 ', in which the handrail 20 10 is arranged to be locked. The locking mechanism 13 is openable and can be closed. A locking mechanism 13 for releasably locking the handrail 10 from its housing 12 to the second handrail element

117. - 25 The housing 12 is now a U-profile in cross section and formed of an bent sheet piece 24. The housing 12 could equally well be rectangular, for example, if the handrail 104 of the edge rail 102.1 2 had a rectangular cross-section. The body E of the plate E, i.e. thus also the housing 12, can be the width of the cross section of the handrail 104 in the cross-sectional direction of the handrail 104 © 30. In this case, the handrail element 11 N adapted to act as a gate cannot be pivoted around the handrail 104 when the lock is on.

Fig. 3a shows an example of the guardrail locking arrangement 20 of the handrail 104 of the edge guardrail 102.1 in cross-section, and Fig. 3b shows the corresponding locking arrangement 20 seen from above. Figure 4, in turn, shows the locking arrangement 20 seen obliquely. Figure 3a also shows an example of a curb

102.1 of the handrail 104 in cross section. The handrail 104 of the edge rail 102.1 includes a unitary elongate profile beam 109 adapted to act as a gripping portion and a narrower groove 112 fitted to the profile beam, from which the handrail 104 can be fitted to the edge of the handrail panel 107. The locking mechanism 13 includes a latch 14 pivotally located in the locking arrangement 20. More specifically, the latch 14 is pivotally positioned in the locking arrangement 20 such that when locking, the latch 14 is adapted to recede from the path of the second handrail element 11 'to enter the housing 12. In addition, the latch 14 is adapted to return to the second handrail element 11' to close the second handrail element 11 'bypassing the latch 14. When unlocking, the latch 14 is in turn adapted to recede from the path of the second handrail element 11' to open the housing 12 and to disengage the second handrail element 11 'from the housing 12. That is, the locking member 14 is operatively arranged in connection with the housing 12 so as to be adapted to recede when the railing element 11 'adaptable to the housing 12 is introduced into the housing 12 and - 25 when removed from the housing 12, and further to prevent the railing element 11 from escaping from the housing 12 11 'being in the housing 12. More generally, the latch 14 is adapted to act in the locking mechanism 13 as a locking member 2 which is adapted to i when inserting and removing the handrail element 11 ”into the housing 12 and, in addition, wedge the handrail element 11” into the housing 12 = while it is there.

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The handrail element 11 of the handrail 10 is arranged as part of the locking arrangement 20. In this case, the handrail element 11 includes a space 15 for an evasive movement V arranged on the latch 14 (Fig. 5). Thus, the latch 14 pivots inside the tubular handrail element 11 as it avoids the handrail element 11 'to be inserted into the housing 12 and also removed therefrom. For the evasive action V, the lower surface of the handrail element 11 has a cut in the shape of a latch 14 in its casing, which allows the latch 14 to turn inside the handrail element 11. The latch 14 is, for example, a piece of plate cut into shape. The basic shape of the body can be triangular. The latch 14 and the space 15 arranged thereon on the handrail element 11 are longitudinal L of the handrail element 11.

The latch 14 is pivotally articulated to the locking arrangement 20. The latch 14 is pivoted at a distance D from the centerline 16 of the handrail element 11. To this end, the locking mechanism 13 includes an articulated arm 17 arranged on the latch 14 to engage the latch 14 to allow it to pivot. The articulated arm 17 is a protrusion below the casing of the handrail element 11 with a hinge point 18. On the other hand, the articulated arm 17 could also extend upwards from the center line 16 of the handrail element 11.

In addition to the locking arrangement 20, the invention also relates to a handrail element 11 for the handrail 10 of the treatment bridge 101 of the fiber product machine 100. The handrail element 11 comprises an elongate guide part 19. The guide part 19 has ends 21.1, 21.2. At least one of the ends 21.1 of the guide part 19 has a locking arrangement 20 for releasably locking the handrail element 11 to the second handrail element 11 '. The locking arrangement 20 is a locking arrangement according to the above invention. The second handrail element 11 ', into which the handrail element having the locking arrangement 20 = is locked, is now arranged perpendicular to the handrail element 11 having the locking arrangement 20. In this case, it can be, for example, the edge rail N 102.1 of the treatment bridge 101. The handrail element 11 can be telescopic, i.e. its length can be changed. In this case, it goes to treatment bridges of different widths

101.

The handrail element 11 can be understood, for example, as a mere safety barrier or, for example, as a sub-component (upper handrail) of the safety railing shown in Figures 1 and 2. When the handrail element 11 is pushed in the direction of the handrail tube or handrail 104 of the treatment bridge 100 as a safety barrier, the locking mechanism 13 hangs on the handrail 104 and the safety barrier remains in place, also in the machine direction MD.

In the case of a safety barrier, the locking arrangement 20 according to the invention can thus be located at both ends of the handrail element 11.

In this way, instead of a fixed installation, the safety barrier can be placed anywhere on the treatment bridge 100 and its movement cannot be prevented, for example when the MD is supported in the machine direction.

In addition to the locking arrangement 20 and the handrail element 11, the invention also relates to a handrail 10 for the treatment bridge 101 of the fiber product machine 100 as shown in Figures 1 and 2.

The handrail 10 comprises at least one handrail element 11 provided with a locking arrangement 20 according to the invention for releasably locking the handrail 10 from the handrail element 11 to the handrail element 11 'of the second handrail 10', now the edge handrail 102.1. At least one handrail element 11 of the handrail 10 is a handrail element 11 as described above. Next, the operation of the guardrail according to the invention, more generally, the handrail 10 and the locking arrangement 20 and the structural details of the embodiment shown will be explained in more detail with reference to Figures 3a to 3b, 4 and 5. .

Fig. 3a shows an example of the guard rail locking arrangement 20 and Fig. 3b the same 2 seen from above.

Figure 4, in turn, shows the locking E arrangement 20 seen obliquely.

When closing the guardrail and thus the access controlled by it, the guardrail is pivoted horizontally so that its first end 21.1 and even more specifically, the housing 12 of the locking arrangement 20 is on the handrail 104 of the edge guard 102.1.

The guard rail housing 12 is then lowered onto the handrail 104.

As a result, the handrail 104 rotates the latch 14 relative to its hinge point 18, whereby the latch 14 dodges the handrail 104 into the space 15 inside the handrail element 11. That is, the handrail 104 pushes the latch 14 away from the front and passes it into the housing 12 arranged thereon. , no special user interaction related to the locking mechanism 13 is required to provide the locking.

The safety barrier locks automatically when the boom is lowered onto the handrail tube 102.1 of the treatment bridge 100.

Once the handrail 104 has reached the housing 12 and thus also bypassed the latch 14, the latch 14 will automatically return to its original position.

In this case, it pivots in the opposite direction to its hinge point 18 as when the handrail 104 was inserted into the housing 12.

The tip 22 of the latch 14 is then positioned below the handrail 104, for example on the profile beam 109.

The return of the latch 14 takes place by gravity, in which case no user interaction is required to restore the latch 14 either.

The occurrence of locking completely without interfering with the locking mechanism 13 lowers the threshold for the use of a lockable guardrail and thus improves safety, since the locking takes place automatically thanks to the invention.

The lock obtained is secure and will not open unless the lock is intentionally opened.

The position of the tip 22 of the latch 14 in the lock below the handrail 104-25 results in that when the guardrail O is lifted to get the handrail 102.1 out of the housing 12 5 and thus open the guardrail, the latch 14 prevents the handrail> 104 from escaping from the housing 12. 104 to the housing 12 because the latch 14, more particularly its tip 22 is c 30 below the handrail 104.

Thus, when raised, the boom does not open. = At the edge of the latch 14 in connection with the articulated arm 17 there is a mechanism which N prevents the latch 14 from turning lower than this locking position.

The stopper 23 now acts as a mechanism. The tip of the latch 14 may in turn have, for example, a screw for adjusting the latch 14 to suit handrails 104 of different strengths.

The safety lock opens when the handrail is lifted from the locking latch and the safety rail is lifted off the handrail 104. The safety railing is unlocked by turning the latch 14 so that it moves out of the way of the handrail 104. Turning the latch 14 requires active operation from the unlocker. In this case, the latch 14 is raised below it by hand, whereby the latch 14 pivots through its articulation 18 and dodges the handrail 104 in the housing 12 inside the handrail element 11 into the space 15 arranged on the latch 14. After the latch 14 tip 22 has passed the handrail 104, the handrail 104 Figure 5 shows the locking arrangement 20 in a situation where the guardrail is being opened. The Salva 14 movement is still in progress. In the arrangement of Figure 5, it further prevents the handrail 104 from escaping from the housing 12 located just below the cross-sectional profile of the handrail 104. Another small pivoting movement is required to move the tip 22 of the latch 14 away from the front of the handrail 104, after which the housing 12 can be lifted off the top of the handrail 104 to remove the handrail 104 from the housing 12. Because the latch 14 is raised below the handrail element 11 to unlock and the pivoting movement takes place from the bottom upwards, so that these also prevent the lock from being opened unintentionally. The guardrail is opened by raising the guardrail slightly upwards from its first end 21.1 and then turning it O off the handrail 104. Thus, when the lock is opened, the movement and operation of the latch 14 is exactly the same 2 as when the lock is made. Lifting the latch 14 from below will unlock E. The lock cannot thus be opened accidentally, for example, but always requires active action from the user of the guardrail.

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S> To raise the first end 21.1 of the guardrail when closing and opening the guardrail at its opposite end 21.2, there is a ball joint 108 ”for reversibly connecting the guardrail to the second edge guard 102.2. In addition to the horizontal pivoting movement of the guardrail, the ball joints allow the guardrail a small vertical movement required to insert the edge guardrail 102.1 into and out of the housing 12. In the solution according to the invention, the locking of the guardrail does not remain the responsibility of the user, but it always locks automatically. The solution does not require loose parts, springs, cylinders or actuators. Locking is by gravity. The lock applies to all types of handrails, including the upper guide of the glass handrail. In the context of the invention, a fiber product machine generally refers to machines that use wood fibers as their raw material, such as, for example, a paper, board, finishing and tissue machine, and a pulp drying machine. It is to be understood that the foregoing description and the accompanying drawings are intended to illustrate the present invention only. Thus, the invention is not limited solely to the embodiments set forth above or defined in the claims, but many different variations and modifications of the invention will be apparent to those skilled in the art that are possible within the scope of the inventive idea defined by the appended claims.

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Claims (6)

PROTECTIVE REQUIREMENTS A loading arrangement for a railing machine's service brewing gas railing, which is located in the railing element (11) of the railing (10) and which comprises - a housing (12) arranged for a second railing element (117), to which the railing (10) is arranged to be read. , an openable closable reading mechanism (13) for reading the railing (10) in its housing (12) detachably to said second railing element (117), characterized in that the reading mechanism (13) comprises a latch (14) rotatably placed in the locking arrangement (20) so that - when locked, the latch (14) is arranged to fold away from the second railing element (117) when it is moved to the housing (12) and return to in front of the second railing element (117) for closing the housing (12). when the second railing element (117) has passed the latch (14), - upon opening the lock, the latch (14) is arranged to fold away from the second railing element (117) for opening the housing (12) and releasing the second the railing element (117) out of the housing (12), and in which the railing element (11) of the railing (10) is arranged as part of the locking arrangement (20) and it comprises a space (15) arranged for evasive maneuvering (V) of the latch (14). - 25 O Reading arrangement according to protection requirement 1, characterized in that the barrier (14) and the space (15) are located in the longitudinal direction of the railing element (11) 2. (L). x a © 30 Reading arrangement according to protection requirements 1 or 2, characterized in that the catch (14) is articulated at a distance (D) from the center line (16) of the N rail element (11). 5 Reading arrangement according to one of Claims 1 to 3, characterized in that the reading mechanism (20) comprises a guide arm (17) arranged for the latch (14), on which a guide point (18) for the latch (14) is arranged so as to enable its rotation. Railing element for the railing of a fiber product machine service bridge, which railing element (11) comprises an elongate guide part (19) having ends (21.1, 21.2) and a guide part (19) in at least one end (21.1) reading arrangement (20) for openable reading of a handrail element (11) to a second handrail element (117), characterized in that the reading arrangement (20) is in accordance with one of the protection claims 1 - 4. A railing bridge of a fiber product machine, comprising at least one railing element (11) equipped with a reading arrangement (20) for openable reading of a railing element (11) of a railing (10) to the railing element of another railing (107) (107) 11), characterized in that the railing element is a railing element (11) according to protection requirement 5. N O N> O N I jami a © N <r O N O N D