FI126526B - Arrangement in connection with a fibrous web machine - Google Patents

Description

COMPILATION WITH A FIBER MACHINE

The invention relates to an arrangement in connection with a fiber web machine, which arrangement comprises at least two interlockable locking machine elements having an aperture, and a removable fastening pin between the machine elements for locking the machine elements together and locking means for locking the pin to the selected machine element. the member forming opposing portions, the locking means comprising a latch in one portion and a locking surface in the opposing portion.

There are several machine elements associated with a fiber web machine that should be serviced at regular intervals. Such machine elements include, for example, various rotary rollers and press rollers with a rotating jacket, from which press rollers with a jacket are serviced even every few weeks. During driving, for example, the press rolls must be bonded from the bearing housings to their counter rolls so that the press roll and the counter roll remain together during loading. It is important for the smooth running of the service that the press and counter rollers can be separated quickly and easily.

It is generally known that the bearing housings of the press rollers are fixed by means of fixed machine elements. The machine members in this case may be, for example, fixed connecting arms with openings for the fixing pin. The bearing housings are also made with holes for mounting pins with holes. The connecting arm is positioned between the bearing housing lugs so that the openings in the connecting arm and lugs align, then the retaining pin is inserted through both bearing housing openings and the connecting arm opening. In this case, the mounting pin locks the bearing housings together by means of connecting rods.

The bearing housings generally include, for example, bronze bushings which act as a fit between the bearing housings and the mounting pin, locking the mounting pin securely in place. According to the prior art, the pin can be secured by a latch, which can be, for example, a flange attached to the bearing housing by means of a bolt, which comes in part in front of the mounting pin head, preventing the fixing pin from being removed. However, such a structure is difficult to remove when the fastening pin is opened.

A problem with the prior art design is the difficulty of inserting the fastening pin and inadequate locking, especially in oblique press nipples.

Prior art DE 102007005393 A1 discloses an arrangement for attaching press rolls to a fiber web machine. The assembly has two interlockable, lockable, open-ended machine members, between which is provided a removable fastening pin for engaging the machine members.

DE 102008054858 A1, for its part, discloses two open-lockable machine opening means having a hole and a tie rod forming a pin. A similar structure is also known from DE 102010062101 Ai.

The object of the invention is to provide a better arrangement than the prior art adaptations in connection with a fiber web machine, in which the fastening pin can be inserted more easily and faster than the prior art adaptations, and in which the fastening pin is locked in place. This object may be achieved by an arrangement with a fiber web machine, which arrangement comprises at least two openly lockable, aperture-engaging machine members, a removably secured pin between the machine members for locking the machine members together and locking means for locking the pin to the selected machine member forming opposing parts. The locking means comprises a latch in one part and a stop surface in the opposite part, and the locking means are arranged radially on the side of the pin. The locking means allow the pin to be locked into the machine members, thereby preventing the pin from escaping from the opening of the machine members in all situations. In addition, the solution of the invention can achieve locking of the pin without separate locking means located outside the pin, which provides a considerable number of different embodiments for locking means. From now on, the term "pin" shall be understood to mean the same paragraph as the aforesaid term fastening pin.

Preferably, the latch is adapted to lock the stop surface by movement of the latch. This provides mechanical locking that is easy to open and close.

Preferably, the arrangement includes axial guiding means for the pin to align parts of the locking means. By means of the guiding means, the latching means of the locking means and the abutment surface are rapidly aligned.

According to one embodiment, the locking means include an axial groove of the pin disposed on the machine member or pin allowing the latch or abutment surface to move relative to one another. At the same time, the groove acts as an air passage, facilitating the insertion of the pin into the openings in the machine members. The groove can also be inclined, that is, to direct the pin to rotate with axial movement.

Preferably, the latch comprises at least one movable locking surface to form an obstacle on the stop surface. The movable locking surface of the latch allows the pin to be locked to engage machine elements.

According to one embodiment, the latch is fitted to a pin and the abutment surface to the machine member. The abutment surface of the machine member is easy to manufacture on the surface of the machine member.

Preferably, the pin includes a gripping surface for pulling the pin out of the openings in the machine members. Using the gripping surface, opening the bond between the machine members by pulling the pin is very simple and quick.

The gripping surface may be adapted to operate the latch. In this case, the pin can be unlocked while pulling the pin out of the openings in the machine members.

According to one embodiment, the latch is a pivotable hinged screw having a locking surface. The hinge screw is a simple and reliable tool for locking.

Preferably, the assembly includes a securing member for preventing the pin from falling, which securing member is radially disposed on the side of the pin. In this way, the pin can be prevented from falling apart without separate structures extending beyond the pin, which interferes with, for example, changing the tissue circulation of the press. In addition, this can prevent the pin from being separated from the arrangement, for example, during maintenance.

According to one embodiment, the securing member is a groove fixed piece with respect to the groove. This secures the locking member against the fixed stop surface and ultimately prevents the pin from falling.

Preferably, the gripping surface and the securing member are at least partially integrated into the locking means. In this way, the structure is simple without any external parts. The pivoting hinge screw allows the locking surface to be rotated to either the pin locking position or the pin movement position. In the locking position, the locking surface prevents the pin from being moved by the retaining surface contained therein.

According to one embodiment, the locking means comprises a fixed stop surface and a movable locking surface. The fixed stop surface forms a mechanical barrier on the movable locking surface which prevents the pin from moving out of the openings when the locking means are locked.

Preferably, the hinge screw comprises two locking surfaces substantially spaced apart from one another and forming a barrier to the abutment surface when pivoted. The hinge screw can preferably be turned only downwards to lock the pin, whereby gravity helps to hold the lock in place.

The arrangement according to the invention achieves a locking between the machine elements which is easy and quick to use and which prevents the pin from falling accidentally. The arrangement according to the invention can be carried out without the protruding protruding parts of the pin, such as chains or other similar securing means, whereby, for example, the straps of the press rolls are easy to change and do not require removal of the parts of the arrangement.

In the arrangement according to the invention, the locking means preferably comprise a groove and a locking surface which are, for example, in a pin and a locking surface which is, for example, inside the opening of the machine member. The locking means may also be the other way round, i.e. the groove and the locking surface in the machine member and the locking surface in the pin. In any case, the latch and the abutment surface are in different parts relative to each other. More particularly, the arrangement according to the invention is characterized in that the locking means are arranged radially on the side / surface of the pin.

The invention will now be described in detail with reference to the accompanying drawings illustrating certain embodiments of the invention, in which:

Fig. 1a shows an embodiment of an embodiment of the invention in the locked position,

Fig. 1a shows an embodiment of an embodiment of the invention in an open position,

Fig. 2a is a perspective view of an embodiment of the embodiment of the invention in a locked position,

Figure 2b is a side elevational view of an embodiment of the embodiment of the invention in the locked position,

Fig. 3a is an axonometric view of an embodiment of the embodiment of the invention in an open position,

Figure 3b is a side elevational view of an embodiment of the embodiment of the invention in an open position,

Fig. 4a shows an axonometric view of an embodiment of the embodiment of the invention when the pin is pulled out from within the machine member, Fig. 4b is a side view of an embodiment of the arrangement of the invention when the pin is pulled out from inside the machine member,

Figure 5a illustrates an axonometric view of an embodiment of an embodiment of the invention with the pin fully retracted from inside the machine member,

Fig. 5b shows a side elevational view of an embodiment of the arrangement of the invention when the pin is fully retracted from the inside of the machine member, Figs. 6a-6c show a side view of the operation of the locking means of the invention.

Figure 1a shows an embodiment of the arrangement 10 according to the invention as a whole. The arrangement 10 comprises at least two releasably lockable machine members 14 and 16 having an opening 12 and a removable fastening pin 18 disposed therebetween for locking the machine members 14 and 16 together. In this embodiment, the machine member 14 is a bearing housing 13 of roll 100. Roll 100 may be a press roll and roll 200 may be a counter roll thereof. In turn, in this embodiment, the machine member 16 is a connecting arm by means of which the bearing housings 13 and 15 of the rollers 100 and 200 are fixed to each other. Further, the arrangement includes a gripping surface attached to the pin 18 for pulling the pin 18 out of the openings 12 in the machine members 14 and 16. The pin 18 further includes locking means for locking the pin 18 between at least two machine members 14 and 16. The gripping surface and locking means included in the arrangement are better illustrated in Figures 2a to 4b.

In the embodiment of Fig. 1a, the press roll roll 100 has to be serviced much more frequently than the roll roll roll 200. Thus, the roll 100 must be easily and quickly removable from the roll 200. Generally, the connecting arms 16 are permanently axed to the counter roll. . Also, the attachment of the machine elements 16 to the counter roll can be accomplished by the arrangement according to the invention. In Fig. 1a, the assembly is in a locked position where the pin 18 passes through the openings 12 of both the machine housing 14 acting as a bearing housing and the machine member 16 acting as a connecting rod. Ib, in turn, illustrates a situation in which the assembly is in the open position pin 18 of the opening 12 of the machine member 16 acting as a pulled-out connecting rod. In the Ib position, roll 100 can be lifted off top of roll counter 200.

Fig. 2a is an axonometric view showing the pin 18 of an arrangement according to the invention disassembled from its application. Inside the openings 12 of the machine member 14 shown in Figs. 1a and Ib, the fitting sleeves 36 and 36 'of Fig. 2a are placed. The adapter sleeves 36 and 36 'fit the apertures 12 of the machine member 14 to the pin 18. The adapter sleeves 36 and 36 'may be, for example, bronze. Preferably, the first fitting sleeve 36 is inserted into the opening of the rear machine member in the mounting direction of the pin 18. The second fitting sleeve 36 ', in turn, is mounted in the opening of the machine member which is the first when the pin 18 is mounted and in which the pin 18 is partially retained when it is pulled out. In the space between the fitting sleeves, a second machine member 16, i.e. in this case a connecting arm, is inserted. Preferably, the adapter sleeves are connected to the machine members by crimping joints. The pin faces of the pin can also be machined directly into the bearing housing, whereby the arrangement can be realized without bushings.

2a and 2b, the locking means 24 of the arrangement consist of opposed parts which are a pin 18 and a selected machine member 14, wherein the locking means 24 comprises a latch 28 in one part and a stop surface 26 in the opposite part radially on the pin surface. In other words, the latch 28 and the stop surface 26 are in different parts.

2a and 2b, in a preferred embodiment of the invention, the longitudinal direction of the pin 18 to the surface 19 of the pin 18 is provided with guide means 29 in this embodiment. The guide means 29 are grooves 30 formed on the surface of the pin 18. 18. The latch 28 of the pin 18 and its actuating means may be formed at the end of the fitting sleeve 36 'of the groove 30. In this preferred embodiment, the latch 28 is a hinge screw 34 or a hinge pin hinged at the transverse axis of the pin 18 and formed at its end with a locking surface 42 shown in Figures 6a-6c. The axis of the hinge screw 34, in turn, is connected directly to the gripping surface 20, which in this embodiment is a handle acting as a drive means.

According to one embodiment, the guiding means for guiding the pin into the apertures of the machine members are formed, for example, by the balancing of the pin or the shape of the aperture of the machine members, whereby the locking means do not include grooves.

6a to 6c, the latch 28 may include two locking surfaces 42 between which a slot 32 is formed. The slot 32 may be a structure similar to a groove 30, i.e., a U-shaped recess in the longitudinal section of the groove 30 at the hinge screw 34 34 as shown in Figures 2a and 2b. It is essential for locking that on both sides of the slot 32 there are higher heels, i.e. locking surfaces 42, extending from the radial height of the pin 18 all the way up to the inner surface of the opening of the machine member, in other words. Thus, the locking surfaces 42, when turned transversely to the groove 30, prevent the movement of the pin 18, since the stop surface 26 remains in the slot 32 between the locking surfaces 42 and the pin which is firmly connected to the hinge screw 34 cannot be moved. For the groove between the locking surfaces, the slot may only be open at one side as in the pictures, but it may also be open at both sides, allowing air to move more along the groove. On the other hand, an open slot with only one side prevents the pin from passing past the stop surface in the locking situation if the lugs of the machine member are open on both sides, i.e. the openings extend through the lugs.

The latch 28 is provided as a counterpart in the arrangement by a fixed stop surface 26, which may be mounted on the adapter sleeve 36 '. The stop surface 26 may be any solid piece protruding from the inner surface of the fitting sleeve 36 'towards the center of the opening to form a physical barrier to the hinge screw 34. Preferably, the stop surface 26 may be a screw or bolt extending radially from pin 18 Preferably, the stop surface 26 is located at the groove 30 on the pin 18. The stop surface 26 may also be formed directly on the inner surface of the aperture of the machine member if the aperture is otherwise dimensionally accurate with the pin. The stop surface 26 is preferably formed in the pull-out direction of the pin by the outer fitting sleeve 36 ', where it also acts as a barrier to the locking member 22 of the pin 18. Also, the securing member 22 may be a bolt or similar physical barrier in the radial direction of the pin, which may be provided in the groove 30 and prevent the pin 18 from falling out of the opening 12. The securing member 22 is preferably a narrower body. For example, in the case of Figures 1a and Ib, one opening of the press roll is to release a closed cavity from the other, whereby the air must exit the cavity through the groove.

2a and 2b, in the locked position of the pin 18, the slot 32 and the locking surface 42 of the hinge screw 34 are turned transverse to the direction of the groove 30. Here, the stop surface 26 remains inside the slot 32 between the locking surfaces 42 and the hinge screw 34 outside the slot 32 prevents the pin 18 from being moved in the longitudinal direction of the pin 18. Preferably, the locking surface 26 is an integral part of the adapter sleeve or machine member and the latch is a hinged part, but it is also possible to apply the invention so that the locking surface is hinged to the machine member and the locking surface is an integral part of the support pin.

2a, the handle may be made in a recess 40 formed at the end of the pin 18, whereby the gripping means does not cause a protruding part on the pin 18. Preferably, the handle is turned transversely longitudinally when the hinge screw 34 is in the locked position. In Figures 3a and 3b, the handle is turned longitudinally of the pin 18, whereby the slot 32 of the hinge screw 34 pivots longitudinally of the pin 18 and the locking surfaces 42 pivot to the side of the groove 30. More specifically, the open side of the slot 32 then pivots towards the groove 30 and the locking surfaces 42 (Figs. 6a-6c) remain outside the width direction of the groove 30 on the sides of the groove 30. In this case, by pulling the handle, the pin 18 can be pulled out of the opening of the machine members or between the fitting sleeve 36. Preferably, the pin 18 is not completely withdrawn between the machine members, but the pin 18 remains partially within the outer fitting sleeve 36 ', as in Figures 5a and 5b. The stop surface 26 controls the direction of movement of the pin 18 by means of a groove 30 so that the pin comes out directly as shown in Figures 4a-5b. In this embodiment, the securing member 22 fixedly attached to the groove 30 of the pin 18 follows the pin 18 until it meets the stop surface 26, stopping the longitudinal movement of the pin 18. Figures 4a and 4b show a step where the pin 18 is slightly extended out of the locked position and in Figures 5a and 5b as far as possible, whereby the locking member 22 contacts the stop surface 26. that is, the connecting arm can be pulled out between the lugs of the bearing housing 13, the lugs 36 and 36 'of which fit inside the lugs.

Figures 6a-6c further illustrate, in a simplified manner, the operation of the locking means 24 of the arrangement according to the invention. Preferably, the locking means comprises a groove 30, a latch 28, and a stop surface 26 for providing mechanical locking. In this embodiment, the latch 28 is a hinge screw 34 hinged to a pin 18 having a slot 32 and a stop face 26 between the locking surfaces 42 and a fixed bolt or similar projection formed in the machine member. A groove 30 is formed on the surface of the pin 18, where the stop surface 26 is located. The latch 28 may be provided at the end of the groove 30. When the pin 18 is to be locked, the pin 18 is pushed into the machine members through the openings and at the same time toward the stop surface 26, whereby the hinged screw 34 pivoted to an open position, i.e. slot 32 towards the stop surface 26 finally meets the stop surface 26. 30, so that the pin cannot move in its longitudinal direction. In turn, when the pin 18 is pulled out, the securing member 22, i.e. the bolt or pin or the like, which is fixed to the pin, meets the stop surface 26 to prevent the pin 18 from moving. The distance between the locking surface 28 and the securing member 22 is equal to the longitudinal movement of the pin 18.

Figures 6a-6c show that at the latch 28, the groove 30 is preferably wider than the rest of the groove 30. The purpose of this is that the slot 32 may have a width at least substantially wide between the locking surfaces 42 and the stop surface 26. In this case, the latch 28 itself, i.e. in this case the hinge screw 34, should be wider than the part preceding the hinge screw 34 of the groove 30. As used herein, the term "width" refers essentially to the tangential direction of the surface of the pin 18, or in other words to the transverse direction of the groove 30.

Preferably, the pin is made of a solid alloy having the required strength. The width of the groove may be at least 10%, preferably at least 20% larger than the widths of the locking member and the stop surface so that air can escape along the groove. The pin may have a diameter of, for example, 50 to 150 mm, but the size of the pin may vary depending on the intended use.

The arrangement according to the invention can be used in any connection between the bearing housings of two rolls in a fiber web machine. In this context, a fiber web machine refers to all machines used to make a fiber web, i.e., in addition to the fiber web machine itself, the invention can also be applied to calenders.

The idea of the invention can be applied in many different ways, unlike the figures. The locations of the latch and stop surface may be opposite, as may the location of the groove in the surface of the pin. The latch may also be movable radially in its locking action, whereby the stop surface may be a mere notch in the opposite piece.

Claims (10)

An arrangement in connection with a fiber web machine, which arrangement (10) comprises at least two mutually lockable machine members (14, 16), including an opening (12), and a removably fastened pin (18) to be arranged in said openings ( 12) between the machine means (14, 16), for attaching said machine means (14, 16) to each other, and locking means (24) for locking the pin (18) to the selected machine means (14, 16) where said pin (18) ) and selected machine means (14, 16) form opposed portions, which locking means (24) comprise a rule (28) in one part and an abutment surface (26) in the opposite part, characterized in that said locking means (24) are arranged radially on the side of the pin (18). Arrangement according to claim 1, characterized in that said rule (28) is arranged to lock said abutment surface (26) by the movement of the rule (28). Arrangement according to claim 1 or 2, characterized in that the arrangement comprises the steering devices (29) in the axial direction for directing the parts of the locking devices (24) towards each other. Arrangement according to any one of claims 1-3, characterized in that the locking means (24) comprise the grooves (30) of the pin (18) in the axial direction arranged on the machine means (14, 16) or the pin (18) allowing (28) movement relative to each other. Arrangement according to any of claims 1-4, characterized in that said rule (28) comprises at least one removable locking surface (42) to form an obstacle to said abutment surface (26). Arrangement according to one of Claims 1 to 5, characterized in that said rule (28) is arranged to the pin (18) and said abutment surface of the machine means (14). Arrangement according to one of Claims 1 to 6, characterized in that the pin (18) comprises a gripping surface (20) for pulling the pin (18) from the openings (12) of the machine means (14, 16). Arrangement according to claim 6, characterized in that said gripping surface (20) is arranged for actuating said rule (28). Arrangement according to any one of claims 5-8, characterized in that said rule (28) is a reversible hinge screw (34), which comprises said locking surface (42). Arrangement according to any one of claims 1-9, characterized in that the arrangement comprises a securing means (22) for preventing the pin (18) from falling down, which securing means (22) is arranged radially on the side of the pin.