EP1048449A1 - Shaft door for a baling press of vertical type - Google Patents

Abstract

The press shaft door (2) has a guide consisting of two guide track units by which the feeder shaft door (4) is slid parallel with the plane of the press shaft door between closed and open positions. The feeder shaft door in an open position is completely ins the outer dimensions of the press shaft door. Each vertical end side of the feeder shaft door has at least one track following b guided by a guide track of the guide track unit.

Description

The present invention relates to a shaft door for a Baler, according to the preamble of claim 1 and one Baler with such a shaft door.

A baler is known from DE 297 042 76 01, which a press shaft door and one above it Has filler opening, which with the help of a Filler shaft door is lockable. The hopper door is attached to the press housing above the press shaft door Guide rails slidably guided so that they can be opened the feed chute opening can be moved up. The guide rails extend over the lid of the Press housing upwards, so that this known Baler always requires such a parking space when which has enough space above the baler. However, the one designed as a sliding door offers Filling shaft door of this baler has the advantage that none What is there, the feed shaft door can be swung away to the front when filling the substances to be compressed into the Filling chute can be disruptive.

Whenever there is little space to set up a baler is available, it is necessary, especially the To keep the overall height of the baler as low as possible.

It is therefore the object of the present invention, a Landing door for a baler and a baler with to create such a landing door, which if possible is space saving and at the same time the advantages of an Sliding door trained feeder door guaranteed.

According to the invention, a shaft door for a Baling press, consisting of a press shaft door with a above this intended filler opening and one Filling shaft door, by means of which the filling shaft opening is closable, such that the Press shaft door a guide device is provided with whose help the feed shaft door substantially parallel to Door level of the press shaft door between a closed Position and an open position is slidable the hopper door completely in the open position to lie within the external dimensions of the press shaft door is coming. The filling shaft door designed as a sliding door is So to close the feed chute opening from below pushed up.

The shaft door according to the invention has the advantage that the Position of the baler neither wider nor higher than that corresponding outer dimensions of the press housing, which in essentially the width or height of the press shaft door accordingly, must be. In the fully open position the filling shaft door is below the Filling shaft opening on the outside of the press shaft door. Since the filler shaft door does not swing forward, but instead Moved down, handling becomes too not compressing substances immediately before the baler hampered by a feed door that protrudes too far. In addition, what is in the baler Material when closing the filler door pinched and while closing in the interior of the Press pushed. Since the filling shaft door in the open position is located indirectly in front of the press shaft door and the top edge of the hopper door roughly on the same The same height as the lower edge of the filler opening can come, advantageously a work table formed, the depth of which is essentially the sum of the Thicknesses of the feed shaft door and the press shaft door corresponds. A work table formed in this way is added not so far from the front of the baler emerges, such as a pivoted away by 90 ° about a horizontal axis Filler shaft door.

The guide device for the hopper door exists preferably from two guideway units, each of which running vertically in the lateral outer areas of the Press shaft door are arranged. The hopper door instructs at least one of each of their side faces Track body on the in a track of the respective Guideway unit is guided. The tracking bodies are located itself in the upper area of the filling shaft door and the Guideway has such a course that the Filling shaft door forward by one dimension during opening which is slightly larger than the largest Feeder door thickness.

The loading shaft door can be in the closed position at least with parts of your lower edge on the upper edge of the Filling chute opening and thus in the latter being held. Preferably, the hopper door but not only in its upper area, but also in led her lower range. You can do two more Guideways are provided in which two more Track body are guided. These other tracking bodies are arranged in the lower area of the hopper door can be located within the two guideway units Support vertically so that the feed shaft door is supported not required on the upper edge of the feed chute opening is.

Each guideway unit can consist of three separate ones Guideway bodies exist, the geometry of which Guideways for the upper and lower areas arranged tracking body of the hopper door specifies. However, the guideway units can also be in one piece be designed so that the guideways are not only through Assembly of the individual guideway bodies on the press shaft door arise.

In an advantageous embodiment of the invention, the lowest guideway body in its lower area Stop on opening the hopper door in the Holds position. Is the fill shaft door in the closed position not on the lower edge of the Filler opening, so the bottom Guide body in its upper area with be provided with a stop that the filling shaft door in holds the closed position.

The guideway leading the respective upper track body extends directly to the outside of the Press shaft door approach so that the area there Press shaft door a stop for the upper one Forms tracking body, on which this in the closed Position of the feed shaft door is present and which in the essentially the fulcrum of the opening of the Filling shaft door represents pivotal movement. This pivotal movement is required to initially the the lower area of the filling shaft door far enough from the To move the filler shaft opening forward so that the The loading shaft door is then pushed down or can be lowered.

With the help of a preferably in its lower area Arranged locking device can Filling shaft door to be locked on the press shaft door. The Locking device can for example consist of two at the Filling shaft door hinged locking levers, which brought into a locked position by pivoting can be in which they attack on locking elements that are attached to the press shaft door. The operation can the locking lever can be done independently, however is preferably one connecting the two locking levers Connecting rod provided, which a simultaneous Unlocking the locking lever allows. Immediately after The hopper door can unlock the connecting rod with the help of this rod in its open position to be brought. To do this, the connecting rod is a little pulled forward and then pushed down or lowered.

In order to be able to close the filling shaft door again, it is expedient, a horizontal in its lower area to arrange extending actuating rod, with the help of which Filling shaft door from bottom to top in the closed Position can be raised. The connecting rod between the locking levers would in principle also become Closing the hopper door are suitable, but that would be one additional effort and greater care necessary for the locking mechanism of the Locking device reliably engages.

According to the two locking levers on the Actuating rod are stored so that the longitudinal axis of the Actuating rod the pivot point for the pivoting movement of the Locking lever forms.

Since the filling shaft door has a considerable weight, it is connected to a weight-compensating mechanism, advantageously with at least one counterweight, the filling shaft door hanging on one end of a flexible connecting element, which is guided over a deflecting body, and the counterweight on the other end of the Lanyard is attached. The counterweight or counterweights are chosen so that they correspond approximately to the weight of the filler door. Such a weight-neutral suspension of the hopper door enables the vertical position of the hopper door to be continuously adjusted to the fill level of the press shaft. Incidentally, opening and closing the feed shaft door is of course made considerably easier. Preferably, two counterweights are used, which are embedded vertically displaceably in the two vertical hollow door frame profiles, preferably square tubes, of the press shaft door. As a result, the counterweights are not visible on the one hand and on the other hand do not take up any installation space outside the press shaft door.
Instead of the counterweight, tension springs, gas springs, pneumatic or similar means can also be used if necessary.

With a very tight space for the installation and the Operation of a vertical baler allows this present new basic principle for the design of a Landing door also that the loading door after appropriate training of the press shaft door in the same can be sunk.

Figur 1

eine Aufsicht auf eine erfindungsgemäße Schachttür;

Figur 2

eine Ansicht der Einzelheit E gemäß Fig.1;

Figur 3

eine Schnittansicht gemäß Schnitt A-A in Fig.2, wobei sich die Einfüllschachttür in ihrer vollständig geschlossenen Stellung befindet;

Figur 4

eine Schnittansicht gemäß Schnitt A-A in Fig.2, wobei sich die Einfüllschachttür in ihrer nach vorne geschwenkten Stellung befindet;

Figur 5

eine Schnittansicht gemäß Schnitt A-A in Fig.2, wobei sich die Einfüllschachttür in einer noch teilweise geschlossenen, parallel zur Preßschachttür nach vorne versetzten Stellung befindet;

Figur 6

eine Schnittansicht gemäß Schnitt A-A in Fig.2, wobei sich die Einfüllschachttür in ihrer vollständig geöffneten Stellung befindet;

Figur 7

eine Schnittansicht gemäß Schnitt B-B in Fig.6, die um 90° gedreht wurde;

Figur 8A

eine Ansicht eines Teils der Einfüllschachttür;

Figur 8B

eine Seitenansicht der Einfüllschachttür gemäß Fig.8A;

Figur 9A

eine Ansicht eines Teils der Preßschachttür mit einer erfindungsgemäßen Führungsbahneinheit;

Figur 9B

eine Seitenansicht der Preßschachttür gemäß Fig.9A

An embodiment of the present invention is described below by way of example with reference to the accompanying drawings. Show it:

Figure 1

a supervision of a landing door according to the invention;

Figure 2

a view of the detail E according to Figure 1;

Figure 3

a sectional view according to section AA in Figure 2, wherein the hopper door is in its fully closed position;

Figure 4

a sectional view according to section AA in Figure 2, wherein the hopper door is in its pivoted forward position;

Figure 5

a sectional view according to section AA in Figure 2, wherein the hopper door is in a still partially closed position parallel to the press shaft door to the front;

Figure 6

a sectional view according to section AA in Figure 2, wherein the hopper door is in its fully open position;

Figure 7

a sectional view according to section BB in Figure 6, which has been rotated by 90 °;

Figure 8A

a view of part of the hopper door;

Figure 8B

a side view of the hopper door according to Fig.8A;

Figure 9A

a view of part of the press shaft door with a guide track unit according to the invention;

Figure 9B

a side view of the press shaft door according to Fig.9A

Figure 1 shows the front view of an inventive Landing door 1, which is on the right side of the housing 24 of the baler is articulated to be vertical Rotation axis can be pivoted. The landing door 1 consists of special from a press shaft door 2 with a door frame from two vertical door frame profiles 23 and two horizontal door frame profiles 25. In the upper half of the Press shaft door 2, a filling shaft opening is provided, the one in Figure 1 in its closed position The feed shaft door shown is closed. After opening the hopper door 4 becomes the hopper opening released and the material to be destroyed can in the The baler shaft can be filled.

The press shaft door 2 has the width B and the height H here on. The hopper door 4 is in each of them Positions, especially in the fully open position, essentially within this in the door plane of the Landing door 1 lying dimension B and also preferably still within the dimension H.

Figure 2 shows the detail "E" from Figure 1. They are Door frame profiles 23 and 25, preferably 4-square tubes, the Press shaft door 2 can be seen. In addition, the in the Filled shaft door 4 is shown in the closed position. The landing door 1 is also mirror-symmetrical their vertical central axis, so that the detail "E" according to FIG. 2 in mirror-symmetrical form also in the right upper half of the landing door 1 is present in Detail but without the one shown in FIG. 7 and later proximity switch 37 described.

Figure 3 shows the section A-A according to Figure 2. It is the Press shaft door 2 with the upper horizontal door frame tube 25 to recognize. The hopper door 4 closes the hopper opening 3. There are 3 behind the drawing plane of FIG. 3 Guideway body 5,6 and 7, which on the vertical Door frame tube 23 are attached, as in Figure 2 can be seen. With guideway bodies 5, 6 and 7 it can individual parts in the form of sufficiently thick sheets act, but they can also act as a single integral Be formed component in which the guideways 9 and 10 are incorporated.

In the embodiment shown, the guideway 9 is in the essentially formed by the guideway body 6. At least in its upper area, which extends from the door frame tube 25 runs obliquely below, the guide track 9 is on both sides limited, namely upwards by the guideway body 5 and down from the guideway body 6. Preferably, the Guide track 9 also in its vertical section limited on both sides, namely on the one hand by the Guideway body 6 and a guideway cover 26, at which can be a sheet which can be attached to the Guideway bodies 5.6 and 7 is attached. Just like that Guideway 9 is also the guideway 10 in both upper substantially horizontal section as also in its vertical section on both sides limited, namely on the one hand by the lower area of the Guideway body 6 and the upper region of the Guideway body 7 and on the other hand by the Guideway cover 26 and the guideway body 7.

As can be seen in Figures 2 and 3, there is Filling shaft door 4 from a substantially U-shaped Cladding sheet, one on each of the two ends Carrier plate 27 is attached. As shown in Figure 3, the Carrier plate 27 is approximately S-shaped, its upper one S-swing of the U-shape of the cladding sheet of the filling shaft door 4 is adjusted. The carrier plate 27 thus stiffens the lateral outer areas of the casing sheet.

The two carrier plates 27 each carry 2 tracking bodies in the form of two track wheels 8 and 11. The track wheels 8 and 11 are rotatably supported on the wheel axles 28 and 28 ', which of the Carrier plate 27 are worn. The movement of the top Track wheels 8 is guided by the guideway 9, while the Movement of the lower track wheel 11 from the guideway 10 to be led.

In the closed position shown in FIG Filling shaft door 4 is its own weight from the stop 13 worn at the upper end of the guideway body 7 is formed and part of the horizontal Section of the guideway 10 limited. This is supported lower track wheel 11 at stop 13.

In particular in Figure 3 and in Figures 8A and 8B Locking device shown, by means of which Filler shaft door 4 in its closed position on the Press shaft door 2 can be locked. The Locking device has a toggle-like Locking lever 15, which is pivotable on a Actuating rod 19 is mounted. The operating rod 19 is at both ends of one of the carrier plates 27 held. One likewise held by the carrier plate 27 Stop screw 29 protrudes into a locking lever 15 provided slot 30, the center line of the Arc of a circle with a center that is with the longitudinal axis of the actuating rod 19 coincides. The Stop screw 29 thus determines the maximum possible Swivel angle by which the locking lever 15 to the Longitudinal axis of the actuating rod 19 can be pivoted.

There is a locking recess 16 on the locking lever 15 provided that in the locked position from above a locking pin 31 engages, which is attached to the press shaft door 2 and can be clearly seen in FIGS. 3-6 and 9A is. In the Figure 3 locked position of the Locking lever 15 is thus prevented that the Filling shaft door 4 to the front, that is, in Fig. 3 to on the left, moved out of the feed chute opening 3. Especially It is advantageous if the two locking levers 15 over a connecting rod 18 are connected together so that by moving the connecting rod 18 forward or can be pivoted at the rear at the same time.

In the following, the opening of the filling shaft door 4 is explained of Figures 3 to 6 described.

The hopper door 4 is first unlocked by the Connecting rod 18 to the front or in FIG. 3 is pulled to the left. As a result, the Locking lever 15 in a counterclockwise direction around the longitudinal axis the actuating rod 19 and the locking recess 16 there the locking pin 31 free. After the pivoting movement of the Locking lever 15 has been stopped by the stop screw 29, the connecting rod 18 is pulled further forward, so that the lower track wheel 11 in the horizontal section of the Guideway 10 forward or in Figure 3 after left rolls as shown in Figure 4. During this Rolling movement moves the upper track wheel 8 essentially not, but its wheel axle 28 serves as a fulcrum for the Swiveling movement of the feed shaft door 4 clockwise. The Filling shaft door 4 thus performs a pure rotational movement until they are in the position shown in Figure 4 located. The swivel angle of this movement is in the range between approximately 3 ° and 10 °.

The next movement section when opening the filling shaft door 4 is shown in FIG. 5. Starting from the position shown in FIG. 4, the connecting rod 18 is pulled further forward or left, so that the lower track wheel 11 runs through the curve between the horizontal section and the vertical section of the guideway 10 according to the arrow P ₁ '. At the same time, the upper track wheel 8 moves downward along the inclined section of the guide track 9 according to arrow Pi. If the upper track wheel 8 has finally reached beyond the end of the inclined section of the guideway 9 in the vertical section of the guideway 9, the filling shaft door 4 is in a position partially closing the filling shaft opening 3 according to FIG. 5. During the transition from the one in FIG In the position shown in FIG. 4, in the position shown in FIG. 5, the loading shaft door 4 executes a translational movement which is overlaid by a rotational movement. It can be clearly seen in FIG. 5 that the loading shaft door 4 is displaced to the front or left when it is opened from the door plane of the pressing shaft door 2.

Around the hopper door 4 from that shown in Figure 5 Position in the fully open position according to Figure 6 to bring it down, just move it vertically, the track wheels 8 and 11 along the vertical sections of the guideways 9 or 10 move until the lower track wheel 11 against the stop 12 at the lower end of the vertical section of the Guideway 10 bumps. In addition, a stop 32 on lower end of the vertical section of the guideway 9 provided that the upper track wheel 8 in the in FIG. 6 shown position stops. During the transition from the in Figure 5 position shown in the position shown in Figure 6 the feed shaft door 4 performs a pure translational movement out.

In Figure 6 it can also be seen that the upper edge 33 of the Filler shaft door 4 and the lower edge 34 of the Filling chute opening 3 in the fully open position aligned with each other and the surfaces of the upper edge 33 and Lower edge 34 a work table with sufficient depth form.

The surface of this worktable is good to look at Figure 7 can be seen. To cover the between the Filling shaft door 4 and the press shaft door 2 are created Gap can be in the front area of the lower edge 34 Cover plate 35 can be provided, which is shown in FIG is shown. This prevents parts of the jam the material to be filled in the gap.

Figure 7 also shows a dash-dotted line Edge profile 36 of the press housing on which a Proximity switch 37 is arranged. In which Proximity switch 37 can be an inductive one Proximity switch, a reed contact switch or the like Act switches, which when removing a switching flag 38th from the proximity switch 37 a signal to the Forward machine control according to which of the Press drive is shut down for safety reasons. As Switch flag 38 can be a coded magnet, for example serve. An essential feature of the proximity switch 37 is that it has a tolerance zone in which the switching flag 38 can move without the Press drive is shut down. As best shown in Figure 2 too can be seen, the switching flag 38 is on one Carrier rod 39, which as an extension of the wheel axis 28 of the lower track wheel 11 is formed. The switching flag 38 protrudes to the left beyond the door frame tube 23 and is located in the closed position of the hopper door 4 in the Tolerance zone of the proximity switch 37, if the Press shaft door 2 is closed.

The position of the Adjust the loading shaft door 4 if it is weight-neutral is hung. As in FIGS. 8A and 8B and in FIG. 2 can be seen, there is one on the upper track wheel 8 Rope attachment plate 40 attached to the rope 21st is attached. Instead of the rope 21, other flexible ones could be used Connecting elements are used, such as chains or similar. The rope 21 is in via a deflecting body Formed a pulley 22 out at the top of the Guide body 5 is attached. From the pulley 22 the rope 21 runs into the hollow door frame tube 23 and holds there a slidable within the door frame tube 23 Counterweight 20, as can be seen in Figure 2. On Counterweight 20 is preferably vertical in both Trending door frame tubes 23. The size of the counterweights 20 corresponds approximately to the weight of the filler door 4. This makes the position infinitely adjustable the hopper door 4 enables. Because of the friction between the guideways 9 and 10 and Track wheels 8 and 11 and between the rope 21 and the rope pulley 22 is the filling shaft door 4, rope 21, Rope pulley 22 and counterweights 20 existing system self-locking. Another advantage of the rope suspension is in that the hopper door 4 in the in Figures 5 and 6 shown positions of the rope 21 always in the direction of Press shaft door 2 is pulled so that the Guideway cover 26 is essentially non-load bearing Must take over function.

If the filling shaft door 4 is to be started on the basis of that in FIG shown position can be closed again, so this be pulled up on the actuating rod 19. The Geometry and / or mass distribution of the locking lever 15 is advantageously chosen in such a way that be Focus always behind or in Figures 3 to 6 always to the right of its pivot axis, in the case of the one shown Embodiment behind or to the right of the longitudinal axis of the actuating rod 19 is located. Thereby it is ensured that the closure recess 16 when Closing the feed shaft door 4 via the locking pin 31 takes hold. Alternatively or additionally, the locking lever 15 of course also with spring elements in the locked position be biased. The provided on the locking lever 15 Incidentally, surface 41 ensures that the Locking lever 15 when closing the hopper door 4 from the locking pin 31 is rotated counterclockwise as far as until the locking recess 16 from above over the locking pin 31st can grab.

FIGS. 9A and 9B show part of the press shaft door 2 shown together with the guideway bodies 5,6 and 7. In FIG. 9B in particular the stops 12, 13, 14 and 32 are closed detect.

In particular in Figures 3 and 7 are on the inside of the Filler shaft door 4 arranged spacer strips 42 to recognize which ensure that during the Pressing no material through the gap between Filling shaft door 4 and the press ram.

Reference number index

1

Landing door

2nd

Press shaft door

3rd

Filling shaft opening

4th

Filler shaft door

5

Management facility

6

Management facility

7

Management facility

8th

Tracking body

9

Guideway

10th

further guideway

11

further tracking body

12th

Stop (open)

13

Stop (closed)

14

attack

15

Locking lever

16

Lock recess

18th

Connecting rod

19th

Operating rod

20th

Counterweight

21

flexible connector

22

Deflector

23

Door frame tube (vertical)

24th

Baler housing

25th

Door frame tube (horizontal)

26

Guideway cover

27

Carrier plate

28, 28 '

Wheel axles

29

Stop screw

30th

Long hole

31

Locking bolt

32

attack

33

Top edge (hopper door)

34

Lower edge (filler opening)

35

Cover plate

36

Edge profile

37

Proximity switch

38

Switch flag

39

Support rod

40

Rope attachment washer

41

Ramp area

42

Spacer bars

A-A

Cut along the line 'A-A'

B-B

Section along the line 'B-B'

B

Width (from item 2 and / or item 24)

H

Height (from item 2 and / or item 24)

P ₁ , P ₁ '

Direction of arrow (direction of movement)

Claims (17)

Landing door for a baler, consisting of a press shaft door (2) with a filling shaft opening (3) and a filling shaft door (4) by means of which the filling shaft opening (3) can be closed, characterized,
that the hopper door (4) on the housing (24) of the baler or on the press shaft door (2), between an upper position and a lower position, is arranged to be essentially vertically movable and lockable and that the hopper door (4) is in its upper position closes the filler shaft opening (3) and completely releases the same (3) in its lower position. Landing door for a baler, consisting of a press shaft door (2) with a filling shaft opening (3) and a filling shaft door (4) by means of which the filling shaft opening (3) can be closed, characterized,
that at least on the press shaft door (2) a guide device (5, 6, 7) is provided, with the aid of which the filler shaft door (4) can be displaced essentially parallel to the door plane of the press shaft door (2) between a closed position and an open position, whereby the feed shaft door (4) comes to lie in the open position essentially within the lateral outer dimensions of the press shaft door (2). Landing door under claim 1 or 2, characterized in
that the feed shaft door (4) and the press shaft door (2) located in the lower position together with their respective upper edges form a work table, the depth of which essentially corresponds to the sum of the thicknesses of the two doors (2 and 4). Landing door under claim 2,
characterized,
that the guiding device consists of two guideway units (5, 6, 7), which are each arranged vertically running on the outer areas of the press shaft door (2), and the filling shaft door (4) has at least one track follower (8) on each of its vertically running end faces which is guided by a guideway (9) of the respective guideway unit (5,6,7). Landing door under claim 4,
characterized,
that each guide unit consists of three guide track bodies (5, 6, 7) which are essentially arranged one below the other and which define the guide track (9) and a further guide track (10), and a further track follower body (11) is provided on each end face of the filler shaft door (4) which is guided by the further guideway (10). Landing door under claim 5,
characterized,
that the lowermost guide body (7) has in its lower region a stop (12) which holds the hopper door (4) in the open position. Landing door under claim 5 or 6,
characterized,
that the lowermost guide body (7) has in its upper region a stop (13) which holds the hopper door (4) in the closed position. Landing door under one of claims 4 to 7,
characterized,
that the guideway (9) runs to an area of the press shaft door (2) which forms a stop (14) against which the tracking body (8) rests in the closed position and which essentially is the fulcrum of the opening of the feed shaft door ( 4) represents pivotal movement. Landing door under one of the preceding claims,
characterized,
that the feed shaft door (4) has a locking device by means of which it can be locked on the press shaft door (2). Landing door under claim 9,
characterized,
that the locking device consists of two locking levers (15) articulated on the hopper door (4), each with a locking recess (16), the respective locking lever (15) being pivoted into a locked position in which the respective locking recess (16) in each case at least partially anticipates a locking bolt (31) attached to the press shaft door (2). Landing door under claim 10,
characterized,
that the two locking levers (15) are connected to one another by means of a connecting rod (18) so that they can be operated simultaneously. Landing door under one of the preceding claims,
characterized,
that an actuating rod (19) for lifting the filling shaft door (4) from the open position to the closed position is arranged in the lower region of the filling shaft door (4). Shaft door under claim 12 in comparison with claim 10 or 11,
characterized,
that the locking lever (15) are mounted on the actuating rod (19) so that their longitudinal axis forms the fulcrum of the locking lever (15). Landing door under one of the preceding claims,
characterized,
that at least one weight-compensating mechanism is provided on the press shaft door (2), which is connected to the feed shaft door (4) and is operatively connected to the latter (4). Landing door under claim 14,
characterized,
that the weight-compensating mechanism is at least one counterweight (20), which is connected to the filler shaft door (4) by means of a flexible connecting element (21) which is guided via a deflecting body (22). Landing door under claim 15,
characterized,
that the counterweight (20) in a vertically extending, hollow door frame profile (23) of the press shaft door (2) hangs vertically displaceably on the connecting member (21). Bale press for producing compacted waste bales, consisting of a press housing with a shaft opening that delimits the press shaft and a shaft door (1) that closes the shaft opening,
characterized,
that the shaft door (1) is designed according to one of the preceding claims.

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