CN216306412U

CN216306412U - Locking arrangement and fence element and service bridge fence for a textile machine

Info

Publication number: CN216306412U
Application number: CN202122224521.3U
Authority: CN
Inventors: 桑帕·J·萨尔米宁; M·J·萨尔米宁
Original assignee: Valmet Technologies Oy
Current assignee: Valmet Technologies Oy
Priority date: 2020-09-15
Filing date: 2021-09-14
Publication date: 2022-04-15
Anticipated expiration: 2031-09-14
Also published as: DE202021104796U1; FI12907Y1; AT17435U1

Abstract

A locking arrangement for a service bridge fence of a textile machine and located in a fence element of the fence, comprising: a cavity adapted for use with another fence member, the fence adapted to be locked to the other fence member; a releasably closable locking mechanism for locking the fence to another fence element by removing the other fence element from a cavity of the locking mechanism, the locking mechanism comprising a latch pivotably disposed in a locking arrangement such that when locked the latch is adapted to clear the other fence element to bring it into the cavity, after passing the latch to return to a position in front of the other fence element to close the cavity, and when unlocked the latch is adapted to clear the other fence element to open the cavity and remove the other fence element from the cavity. The fence element of the fence is adapted as part of the locking arrangement, the fence element comprising a space for an arranged evasive action of the latch. It is easy and quick to use.

Description

Locking arrangement and fence element and service bridge fence for a textile machine

Technical Field

The object of the utility model is a locking arrangement for a service bridge fence of a fibre product machine, which locking arrangement is located in a fence element of the fence and comprises: a cavity adapted for use with another fence member, the fence adapted to be locked to the other fence member; a locking mechanism releasably closable for removably locking the fence to the other fence element from the cavity of the locking mechanism.

The utility model further relates to a rail element for a service bridge rail of a textile machine and to a service bridge rail of a textile machine.

Background

The textile machine uses maintenance bridges at the sides of the machine, for example, for performing various maintenance procedures on the machine while it is running or during its stoppage. Maintenance bridges may exist, for example, on two levels, and they may cover mainly the entire length of the machine. They comprise an access level serving as a floor in the longitudinal direction of the machine and fences on both sides thereof. The service levels and pens can be assembled from elements of various lengths, which enables them to be partially removed, for example, during maintenance procedures.

In particular, during maintenance shutdowns, parts of the service level have to be removed from the service bridge to be able to replace the elongated machine element from its side. In this case, a safety fence or fence is required to prevent access to the location on the maintenance bridge where the service level has been removed. The security barriers are releasably closed and they also have a locking member which prevents accidental opening of the security barrier.

Typically, the security barrier arranged between the shoulder edge barriers is pivotally hinged at one end thereof to, for example, the first machine side shoulder edge barrier. The safety barriers may be releasably lockable at the other end to a transverse shoulder edge barrier, respectively, which may be an outer shoulder edge barrier of the service bridge.

The locking arrangement is typically a cavity at the end of the security barrier adapted to receive the rail of the shoulder edge barrier as part of the maintenance bridge. The chamber may have a downwardly open U-shaped profile. In this case it can be pushed onto the railing of the maintenance bridge. The security barrier, on the other hand, is locked with the railing via a pin. In this case the U-shaped slot has a hole therein and similarly the railing has a hole for a key which passes through the hole. This secures the chamber to the railing.

However, the problem with the above locking solution is that the usability of the locking member is very poor. It is difficult to align the holes in the U-shaped slot with the railing so that the keys can be smoothly threaded into the holes. This problem is also repeated when the key must be aligned with the hole at the other end of the rail. Additionally, if the U-shaped slot is damaged, the hole may not be aligned. The possible positions of the security barrier on the maintenance bridge are also fixed, since this arrangement requires holes in the railing. Thus, it acts as part of the locking arrangement.

Due to the problems of the current embodiment, it is easy to forget to lock the locking pin. In this case the security barrier only appears to be in place, but it is not locked. Thus, for example, when the security barrier is subjected to a load, the security barrier may open, which may result in dropping from the service bridge and causing a serious accident.

SUMMERY OF THE UTILITY MODEL

The present invention aims to provide such a locking arrangement for a service bridge railing of a fibre product machine, which is simple to operate and to structure, and which is easy and quick to use. In addition, the utility model also aims to provide a fence element for a maintenance bridge fence of a textile machine and a maintenance bridge fence of a textile machine, which are easy and quick to use. The features of the locking arrangement of the present invention are pointed out in the following.

The present application provides a locking arrangement for a service bridge fence of a textile machine and located in a fence element of the fence, and comprising: a chamber adapted for use with another fence member, the fence adapted to be locked to the other fence member; a releasably closable locking mechanism for locking the fence to the further fence element by removing the further fence element from a chamber of the locking mechanism, the locking mechanism comprising a latch pivotably placed in the locking arrangement such that, when locked, the latch is adapted to give way to the further fence element to bring the further fence element into the chamber and, after the further fence element passes the latch, to return to a position in front of the further fence element to close the chamber, when unlocked, the latch is adapted to give way to the further fence element to open and remove the further fence element from the chamber, and wherein the fence element of the fence is adapted to be part of the locking arrangement, and the fence element comprises a space for an arranged evasive action of the latch.

Further, the latch and the space are in a longitudinal direction of the rail element.

Further, the latch is hinged at a distance from the centerline of the fence member.

Further, the locking mechanism comprises a hinged arm arranged for the latch, into which hinged arm a pivot point is fitted for the hinging of the latch, thereby enabling a pivoting movement of the latch.

The present application also provides a fence element for a service bridge fence of a textile machine and comprising an elongated rail member having an end; and a locking arrangement releasably locking the rail element to the rail element at least at one end of the rail part, the locking arrangement being as described above.

The present application also provides a service bridge fence of a textile machine, comprising at least one fence element equipped with a locking arrangement for releasably locking the fence from the fence element to the fence element of another fence, the fence element being a fence element as described above.

The locking arrangement of the present invention requires user intervention only when unlocked. The intervention is very simple, consisting of: lifting the latch as part of the locking mechanism gives way to the fence element which has been locked in the chamber portion of the locking arrangement. Thanks to the utility model, the locking is performed completely automatically. The user places the chamber fitted in the safety barrier into the fence element whereby the latch automatically clears the fence element and returns to the locked position by gravity. Thus, no contact with the latch is required when locking.

Thanks to the utility model, the position of the service barrier on the service bridge is not fixed, since there is no need to provide holes for the fence elements to which the chamber is locked. All parts of the locking arrangement are connected to the security barrier. In addition, the utility model allows the locking arrangement to be provided without loosening members and without the need for tools for locking or unlocking. The locking arrangement of the present invention thus simplifies the implementation of the locking element in many respects. Further advantageous effects achieved by the present invention become apparent from the features of the description part and the appended claims.

Drawings

The utility model is described in more detail by reference to the accompanying drawings, but not limited to the embodiments shown below, in which

Figure 1 shows an example of a maintenance bridge of a textile machine equipped with a safety rail,

figure 2 shows the security fence of figure 1,

figure 3a shows an example of a security fence locking arrangement,

figure 3b shows the locking arrangement shown in figure 3a from above,

fig. 4 shows the locking device of fig. 3a and 3b in a diagonal view, and

fig. 5 shows the locking arrangement with the security fence open.

Detailed Description

Fig. 1 shows an example of a service bridge 101 of a fibre product machine 100, in which the locking arrangement 20, the fence element 11 and the fence 10 of the utility model can be used. In fig. 1, the textile machine 100 is shown for reference purposes only to show its position relative to the service bridge 101. The textile machine 100 is located behind a shoulder edge barrier 102.2 of the service bridge 101. The service bridge 101 comprises a bottom plate 103, usually called service level, in the machine direction MD of the fibre product machine 100 and shoulder edge fences 102.1, 102.2 on both sides of the service bridge. One of the shoulder edge fences 102.1 is in turn located on the opposite edge of the service bridge 101 with respect to the fibre product machine 100. The bottom plate 103 is a generally planar element. The shoulder edge fences 102.1, 102.2 consist at their top edge of the handrail 104 and at their bottom edge of the bar 105. There may be, for example, a glass panel 107, an intermediate bar 106 between them, or the gap between them may also be open. The service bridge 101 also has a main body (not shown) on which the floor 103 and shoulder edge fences 102.1, 102.2 have been arranged. Those skilled in the art will appreciate that the service bridge 101 may be formed from floor and shoulder edge barrier elements. Their lengths do not necessarily correspond to each other, for example between the floor 103 and the shoulder edge fences 102.1, 102.2 and/or between the opposite side shoulder edge fences 102.1, 102.2. The floor 103 of the service bridge 101 is designed for people to walk and stay on, and the shoulder edge fences 102.1, 102.2 are in turn used to prevent leaving the service bridge 101, such as to prevent a person on the service bridge 101 from falling off the service bridge 101.

The shoulder edge fences 102.1, 102.2 of the service bridge 101 and the floor element 103 can each be removed from the service bridge 101, for example in connection with service work performed on the textile machine 100. The floor element 103 and its shoulder edge fences 102.1, 102.2 can be removed from the service bridge 101, for example, as a single modular component. In this case, a security fence 110 would be required. They can be used to prevent a person from reaching a certain position on the service bridge 101, for example a position from which the floor element 103 has been partially removed, and thus causing a risk of falling of the person working on the service bridge 101.

Fig. 2 shows an example of a security fence 110, two analogues of which are also shown in the service bridge 101 of fig. 1. Here, the safety rail 110 comprises two rail elements, namely a top rail element 11.1 and a bottom rail element 11.2. Both rail elements 11.1, 11.2 are telescopic, so that they can be fitted to service bridges 101 of various widths. In this embodiment, the rail member has two extensions. Now a panel 111 with hazard markings (which connects the panels over at least a part of the length of the security barrier 110) may be present between the fencing elements 11.1, 11.2. In addition, the fence elements 11.1, 11.2 are interconnected at one end 21.1 by a vertical beam 25. At the end of the bottom rail element 11.2 there may be a stop 26 on which the rail 10 rests against the shoulder edge fence 102.1.

The safety fence 110 is attached from one end thereof (typically from the end 21.2 on the side of the fibre product machine 100) to the shoulder edge fence 102.2 on that side. The connection is made via a joint 108. Because of joint 108, security fence 110 can be opened and closed. When closed, the safety fence 110 extends between the shoulder edge fences 102.1, 102.2. When opened, safety rail 110 is separated from shoulder edge fence 102.1 on the opposite side with respect to shoulder edge fence 102.2 on the side of joint 108 and is pivoted horizontally via joint 108, so that the safety rail can pass along maintenance bridge 101. When fully opened, the safety rail 110 is parallel to its pivotally hinged shoulder edge barrier 102.2. If the security fence is integrally mounted to service bridge 101, this is also the location of security fence 110 when service bridge 101 is in a passable state.

At the end of the safety fence 110 opposite to the joint 108, there is a locking arrangement 20 of the fence 10 for the service bridge 101 of the fibre product machine 100. More specifically, the locking arrangement 20 is designed for locking the safety fence 110 to another shoulder edge fence 102.1. With the embodiment presented, the first shoulder edge barrier 102.1 (and more particularly, the handrail 104 of the shoulder edge barrier 102.1) is farther from the fibrous product machine 100. The locking arrangement 20 is located in a fence element 11.1 of a fence 10, more particularly a security fence 110. The locking arrangement 20 comprises a chamber 12 and a locking mechanism 13 adapted to engage with the chamber 12. The cavity 12 is adapted for a locking arrangement 20 for a further fence member 11' to which the fence 10 is adapted to be locked. The locking mechanism 13 is releasably closable. The locking mechanism 13 is designed for locking the fence 10 to another fence element by removing the other fence element 11' from its cavity 12.

The chamber 12 now has a cross-section with a U-shaped profile and it is formed by a bent sheet metal element 24. If the handrail 104 of the shoulder edge barrier 102.1 has a rectangular cross-section, the chamber 12 may similarly be rectangular, for example. The sheet metal piece 24, and thus the chamber 12, may have the width of the handrail 104 in the cross-sectional direction of the handrail 104. In this case, there is no space for the fence element 11.1 suitable for use as a door to pivot about the armrest 104 when the lock is engaged.

Fig. 3a shows an example of a locking arrangement 20 of a safety fence 110, in which a cross section of a handrail 104 of a shoulder edge barrier 102.1 is shown, and fig. 3b is the corresponding locking arrangement 20 seen from above. Fig. 4 next shows the locking arrangement 20 in a diagonal view. Figure 3a also shows an example of a handrail 104 of a shoulder edge barrier 102.1 in cross-section. The handrail 104 of the shoulder edge barrier 102.1 comprises a continuous elongated profile beam 109 adapted to act as an insert and a narrower groove 112 fitted in the profile beam, by means of which the handrail 104 can be fitted to the edge of the fence panel 107.

The locking mechanism 13 comprises a latch 14 pivotably placed in a locking arrangement 20. More specifically, the latch 14 is pivotably placed in the locking arrangement 20 such that, when locked, the latch 14 is adapted to give way to the other fence element 11' to bring it into the cavity 12. In addition, the latch 14 is adapted to return to a position in front of the other fence element 11 'to close the chamber 12 after the other fence element 11' passes the latch 14. When unlocked, the latch 14 is then adapted to give way to the other fence element 11 'to open the chamber 12 and remove the other fence element 11' from the chamber 12. In other words, the locking element (i.e. latch 14) is functionally fitted in conjunction with the chamber 12, so as to give way to the fence element fittable into the chamber 12 when bringing the fence element 11' into the chamber 12 and when removing the fence element from the chamber 12, and in addition to prevent the fence element 11' from exiting from the chamber 12 when the fence element 11' is in the chamber 12. More generally, the latch 14 is adapted to act in the locking mechanism 13 as a locking element adapted to give way to the fence element 11 'when brought into and removed from the chamber 12, and also adapted to wedge the fence element 11' into the chamber when it resides in the chamber 12.

The rail element 11 of the rail 10 is adapted as part of the locking arrangement 20. In this case, the fence element 11 comprises a space 15 for the arranged evasive movement V of the latch 14 (fig. 5). Thus, when the latch 14 gives way to the rail element 11', the latch pivots into the tubular rail element 11, bringing the rail element 11' into the chamber 12 and removing the rail element 11' from the chamber at the same time. For the evasive movement V, there is a cut-out in the shape of the latch 14 in the jacket on the lower surface of the rail element 11, which cut-out enables the latch 14 to pivot into the rail element 11. The latch 14 is in the shape of a cut-out piece, for example. The basic shape of the sheet may be triangular. The latch 14 and the space 15 arranged for the latch within the rail element 11 are in the longitudinal direction L of the rail element 11.

The latch 14 is pivotably hinged in a locking arrangement 20. The latch 14 is hinged to a distance D from the centre line 16 of the rail element 11. To this end, the locking mechanism 13 comprises an articulated arm 17 arranged for the latch 14, into which an articulation point 18 is fitted for articulation of the latch 14, enabling pivotal movement thereof. The articulated arm 17 is a projection oriented below the jacket of the fence element 11 comprising a pivot point 18. On the other hand, the hinge arms 17 can also be directed upwards from the centre line 16 of the fencing element 11.

In addition to the locking arrangement 20, the utility model also relates to a fence element 11 of a fence 10 for a maintenance bridge 101 of a textile machine 100. The rail element 11 comprises an elongated rail member 19. The rail part 19 has ends 21.1, 21.2. At least at one end 21.1 of the rail part 19, there is a locking arrangement 20 for releasably locking the rail element 11 to another rail element 11'. The locking arrangement 20 is the locking arrangement of the above utility model. The other fence element 11' to which the fence element comprising the locking arrangement 20 locks is now arranged orthogonally to the fence element 11 comprising the locking arrangement 20. In this case it may be for example a shoulder edge fence 102.1 of the maintenance bridge 101. The rail element 11 can also be telescopic, i.e. its length can be adjusted. In this case, the fence member can be fitted to maintenance bridges 101 of various sizes.

The fence element 11 can for example be included only as a safety barrier or for example as a sub-component of the safety fence (top fence) in fig. 1 and 2. When it is used as a safety barrier and the fencing element 11 is pushed in the direction of the railing (i.e. handrail 104) of the service bridge 100, the locking mechanism 13 is caught against the railing 104 and the safety barrier is likewise held in place in the machine direction MD. In the case of a security barrier, the locking arrangement 20 of the present invention may thus be located at both ends of the rail element 11. Thus, instead of being mounted integrally, the security barrier may be placed anywhere on the service bridge 100 to prevent movement of the security barrier, for example, when leaning against the security barrier in the machine direction MD.

In addition to the locking arrangement 20 and the fence element 11, the utility model also relates to a fence 10 for a maintenance bridge 101 of a fibre product machine 100, as shown in fig. 1 and 2. The fence 10 comprises at least one fence element 11 equipped with the locking arrangement 20 of the present invention to releasably lock the fence 10 from a fence element 11 to a fence element 11 'of another fence 10' (in the case of a shoulder edge fence 102.1). At least one of the rail elements 11 of the rail 10 is a rail element 11 as described above.

The operation of the security fence 110 and locking arrangement 20 of the present invention and the structural details of this embodiment are explained in more detail below by reference to fig. 3a to 3b, 4 and 5. Fig. 3a shows an example of a locking arrangement 20 of a security fence 110, and fig. 3b shows an example when viewed from above. Fig. 4 next shows the locking arrangement 20 in a diagonal view. When closing the safety fence 110 and thus preventing passage regulated by the safety fence, the safety fence 110 is pivoted horizontally so that its first end 21.1, and more specifically the chamber 12 of the locking arrangement 20, is on the armrest 104 of the shoulder edge barrier 102.1. The chamber 12 of the security fence 110 is then lowered onto the handrail 104. Thus, the armrest 104 pivots the latch 14 relative to the pivot point 18 of the latch, whereby the latch 14 gives way for the armrest 104 and into the space 15 arranged inside the rail element 11. In other words, the armrest 104 pushes the latch 14 away from the armrest front and through the latch, into the cavity 12 in the locking arrangement 20 arranged for the armrest. Thus, the locking arrangement does not require special user interaction with the locking mechanism 13.

The security barrier is automatically locked when it is lowered onto the fence 102.1 of the maintenance bridge 100. After the armrest 104 has entered the cavity 12 and thus passed the latch 14, the latch 14 can spontaneously return to its original position. In this case, the latch pivots relative to its pivot point 18 in a direction opposite to the direction when the armrest 104 is brought into the chamber 12. The end 22 of the latch 14 is then located below the armrest 104, for example attached to a profile beam 109. The resetting of the latch 14 occurs by gravity, whereby the resetting of the latch 14 also does not require user interaction. This makes it easier to use the lockable security fence 110 since locking occurs entirely without manipulation of the locking mechanism 13, thereby improving security since the present invention allows for automatic locking. The locking member is provided to be stationary and will not open unless the locking member is intentionally opened.

Since end 22 of latch 14 is placed under armrest 104, latch 14 prevents armrest 104 from exiting compartment 12 when safety rail 110 is lifted to clear armrest 104 of shoulder edge barrier 102.1 from compartment 12 and thus open safety rail 110. In this case, the latch 14 wedges the armrest 104 into the cavity 12 because the latch 14, and more particularly the tip 22 thereof, is below the armrest 104. Thus, the fence is not opened when lifted. On the edge of the latch 14 that engages the hinge arm 17, there is a mechanism that prevents the latch 14 from pivoting downward from this locked position. The stopper 23 now serves as the mechanism. On the other hand, at the end of the latch 14 there may be e.g. a screw for adjusting the latch 14 so that it fits into handrails 104 of different diameters.

The safety lock opens when the locking latch 14 is lifted by hand and the safety fence 110 is lifted off the railing 104. The locking member of the security fence 110 is opened by rotating the latch 14 so that the latch gives way to the armrest 110. Rotation of the latch 14 requires positive action from the person performing the unlocking. In this case, the latch 14 is lifted by hand from below, whereby the latch 14 pivots via its joint 18 and gives way for the armrest 104 in the cavity 12 and into the rail element 11 arranged in the space 15 for the latch 14. When the head 22 of the latch 14 has passed the armrest 104, the armrest 104 may be removed from the chamber 12. Fig. 5 shows the locking arrangement 20 with the security fence 110 open. The movement of the latch 14 is not yet complete. In the arrangement of fig. 5, the armrest 104 is still prevented from moving out of the chamber 12 by a latch that is located slightly below the cross-sectional profile of the armrest 104. Another small pivoting motion V is required to move the head 22 of the latch 14 from a position in front of the armrest 104, after which the chamber 12 may be lifted off the top of the armrest 104 to remove the armrest 104 from the chamber 12. These also prevent accidental opening of the lock when the latch 14 is lifted from under the fence member 11 to open the lock and the pivoting movement V occurs from the bottom upwards.

Security fence 110 is opened by raising security fence 110 slightly from its first end 21.1 and then pivoting the security fence away from the top of armrest 104. Thus, during unlocking, the movement of the latch 14 and its action are similar to those during locking. The locking member can be opened by lifting the latch 14 from below. Thus, the lock cannot be opened accidentally, for example, but it always requires active action from the user of the security fence 110.

To raise first end 21.1 of security fence 110 while closing and opening security fence 110, the opposite end 21.2 of the security fence includes a ball joint 108' to pivotally attach security fence 110 to another shoulder edge barrier 102.2. In addition to the horizontal pivoting movement of the safety rail 110, the ball joint also allows a small vertical movement of the safety rail 110, which is required to bring the shoulder edge fence 102.1 into the chamber 12 and remove it from the chamber 12.

In the solution of the utility model, the user is not responsible for the locking of the security barrier 110, but the security barrier is always automatically locked. This solution does not require a loosening element, spring, cylinder or actuator. The locking occurs under the influence of gravity. The lock fits all types of fences, including the top rail of a glass fence.

In the context of the present invention, a fibre-product machine generally refers to a machine that utilizes wood fibres as its raw material, such as a paper machine, a board machine (fibreboard machine), a post-processing machine, a domestic paper machine and a chemical pulp dryer.

It should be understood that the above description and the related figures are only intended to illustrate the present invention. The utility model is therefore not limited to the embodiments described above or as described in the claims, but various different variants or modifications of the utility model which are possible within the scope of the inventive concept specified by the claims below will be apparent to the person skilled in the art.

Claims

1. A locking arrangement for a service bridge fence of a textile machine and located in a fence element (11) of a fence (10), and comprising:

a chamber (12) adapted for a further railing element (11'), said railing (10) being adapted to be locked to said further railing element (11'),

a releasably closable locking mechanism (13) for locking the fence (10) to the further fence element (11') by removing the further fence element (11') from the cavity (12) of the locking mechanism,

characterized in that the locking mechanism (13) comprises a latch (14) pivotably placed in the locking arrangement (20) such that:

when locked, the latch (14) is adapted to give way for the further fence element (11') to bring it into the chamber (12) and to return to a position in front of the further fence element (11') after the further fence element (11') passes the latch (14) to close the chamber (12),

when unlocked, the latch (14) is adapted to give way to the further fence element (11') to open the chamber (12) and remove the further fence element (11') from the chamber (12),

and wherein the fence element (11) of the fence (10) is adapted as part of the locking arrangement (20) and comprises a space (15) for an arranged evasive action (V) of the latch (14).

2. The locking arrangement according to claim 1, characterized in that the latch (14) and the space (15) are in the longitudinal direction (L) of the fence element (11).

3. A locking arrangement according to claim 1, characterized in that the latch (14) is hinged at a distance (D) from a centre line (16) of the fence element (11).

4. A locking arrangement according to claim 2, characterized in that the latch (14) is hinged at a distance (D) from a centre line (16) of the fence element (11).

5. A locking arrangement according to any one of claims 1 to 4, characterised in that the locking mechanism (13) comprises an articulated arm (17) arranged for the latch (14), into which articulated arm a pivot point (18) is fitted for articulation of the latch (14) to enable pivotal movement thereof.

6. A fencing element for a service bridge fence of a fibre product machine, the fencing element (11) comprising an elongated rail member (19) having ends (21.1, 21.2); and a locking arrangement (20) releasably locking the railing element (11) to the railing element (11') at least at one end (21.1) of the railing part (19), characterized in that the locking arrangement (20) is according to any one of claims 1 to 5.

7. A service bridge railing of a textile machine, comprising at least one railing element (11) equipped with a locking arrangement (20) for releasably locking the railing (10) from the railing element (11) to the railing element (11') of another railing (10'), characterized in that the railing element is a railing element (11) according to claim 6.