Device for removing liquid and dirt

Abstract

The invention relates to a device (31, 61) for removing liquid (99) and dirt (97) from a movable handrail (15) of an escalator (1) or a moving walkway. The device (31, 61) has a bearing device (35), a wheel body (37) with a compressible adsorptive strap (33), a press roller (39), a wheel shaft (47) and a roller shaft (49), the wheel body (37) being rotatably mounted in the bearing device (35) by means of the wheel shaft (47) and the press roller (39) being rotatably mounted in the bearing device (35) by means of the roller shaft (49). The shaft distance (K) between the wheel shaft (47) and the roller shaft (49) is defined in such a way that the adsorptive strap (33) of the wheel body (37) is compressed in a contact area (Z) between the wheel body (37) and the pressing roller (39).

Description

Technical Field

[0001] The present invention relates to a device for removing liquid and dirt from a movable handrail of an escalator or a moving walkway. Background Art

[0002] Escalators and moving walks are used to transport people and carried items in buildings such as railway stations, subway stations, airports, shopping malls, department stores, etc. For transportation, escalators and moving walks have a rotatable and foot-steppable conveyor belt. To prevent people from falling during walking, escalators and moving walks are provided with guardrails on both sides of the conveyor belt, and handrails are respectively arranged around the guardrails in a rotatable manner. The two handrails must be driven at the same speed as the conveyor belt in accordance with relevant standards such as EN115. The handrail usually has a C-shaped cross-section. The forward running section of the handrail is guided by a T-shaped guiding profile rigidly fixed to the guardrail. The return guiding of the return running section is carried out inside the guardrail base of the guardrail that is not visible to people.

[0003] For example, as disclosed in EP2931645B1, the handrail is driven by a handrail drive wheel arranged inside the escalator or the moving walkway. The handrail drive wheel transmits its driving torque and driving motion to the inside of the C-shaped handrail through frictional engagement. As long as the escalator or the moving walkway is supported indoors and protected from the weather, there are almost no problems with the traction between the handrail and the handrail drive wheel. For escalators and moving walks that are used indoors in whole or in part, in rainy weather, a large amount of liquid, especially water, will accumulate on the inner side of the C-shaped handrail, which will greatly change the frictional condition between the handrail drive wheel and the handrail. As a result, slip-stick effects will occur, causing the handrail to move unevenly and making users uncomfortable. In addition, most regulations (such as the standard EN115) prohibit the handrail speed from being slower than the conveyor belt speed.

[0004] CN216004891U, JP2005324968A, JPS5181382A, and JP2008063103A disclose a handrail treatment device for cleaning and disinfecting the handrail of an escalator or a moving walkway by applying an antibacterial liquid film on the surface of the handrail. Summary of the Invention

[0005] The object of the present invention is to provide a reliable mechanism that prevents a large amount of liquid from entering between the handrail drive wheel and the handrail surface in contact with the handrail drive wheel.

[0006] This object is achieved by an escalator or a moving walkway having at least one movably arranged handrail that is wound around and a handrail drive with a handrail drive wheel. The handrail drive wheel is typically arranged in the region of the return run of the handrail, where the handrail can be driven by the handrail drive wheel. The escalator or the moving walkway preferably has at least one device for removing liquid and dirt for each handrail. The device includes: a bearing device, a wheel body with a compressible adsorptive strap, a squeezing roller, a wheel axle, and a roller axle. The compressible adsorptive strap referred to herein is a layer of compressible adsorbent material arranged on the outer cylindrical surface of the wheel body. The adsorptive strap is made of an open-pored, compressible material. For example, felt, woven textile fibers, twisted textile fibers, foam polymer materials (such as foam rubber or open-pored foam rubber), etc. are suitable for this purpose.

[0007] The wheel body is rotatably supported in the bearing device by the wheel axle, and the squeezing roller is rotatably supported in the bearing device by the roller axle. The axial distance is defined or adjusted between the wheel axle and the roller axle such that the adsorptive strap of the wheel body is compressed in the contact region between the wheel body and the squeezing roller.

[0008] This device for removing liquid and dirt is supported on the escalator or the moving walkway such that the strap of the wheel body remains in contact with the same surface of the handrail that contacts the handrail drive wheel. In other words, the surface (strip) of the handrail that is important for frictional engagement with the handrail drive wheel is at least partially cleaned of liquid. For the wheel body, the term "contact" must be interpreted in a broad sense so that on the one hand, the surface of the adsorptive strap can actually physically contact the handrail surface. On the other hand, the distance between the strap surface and the handrail surface can also be selected such that the strap only contacts the droplets or liquid film present on the handrail surface and adsorbs the droplet or liquid film by capillary action. In contrast, the contact between the handrail drive wheel and the handrail surface is always "physical" because frictional engagement is absolutely necessary for transmitting motion.

[0009] During operation, the adsorptive strap absorbs the liquid accumulating on the handrail surface and conveys it to the squeezing roller due to the rotation of the wheel body. Since the squeezing roller compresses the strap in the contact region, the liquid absorbed by the handrail is squeezed out of the strap. The section of the adsorptive strap that has been squeezed out continues to move until it reaches the handrail surface again and absorbs the liquid there again.

[0010] The device can be arranged immediately before the handrail drive wheel in the direction of the linear movement of the handrail in the escalator or the moving walkway. If the moving walkway or the escalator needs to operate in both directions, one device of the above type can be provided on each side of the handrail drive wheel.

[0011] In one design, the device has an adjustment mechanism through which the axial spacing between the roller shaft and the wheel shaft can be specified or adjusted. Thereby, on the one hand, the amount of liquid extruded from the absorbent strap can be adjusted. On the other hand, this also makes it possible to change the rotational resistance exerted by the squeezing roller on the wheel body. In addition, through proper adjustment, wear can be reduced, especially wear on the strap.

[0012] In another design, the device has a friction wheel that converts the linear motion of the handrail into a rotational motion and transmits the rotational motion to the wheel body. This can be achieved in different ways. For example, the friction wheel can be arranged on the wheel shaft and directly connected to the wheel body, or even integrally formed with the wheel body. The friction wheel can also be supported on another shaft and transmit its rotational motion to the wheel body through a transmission member. The advantage of using a friction wheel is that the transmission of motion does not have to be achieved through frictional engagement with the strap. This can be achieved only by slightly pressing the strap against the handrail surface and thus also compressing the surface. Depending on the strap material used, the liquid absorption capacity of the strap will be reduced by compression.

[0013] The speed ratio between the friction wheel and the wheel body can be specified by the geometric relationship of the mechanism and its diameter. Of course, the required speed ratio can also be set fixedly or variably through the transmission member mentioned above arranged between the friction wheel and the wheel body.

[0014] In an alternative design, the device includes a motor and / or an input shaft. The motor and / or the input shaft is designed to transmit a rotational motion to the wheel body. Thereby, the rotational speed of the wheel body can vary independently of the linear motion of the handrail. As long as the surface of the strap only slightly contacts the handrail surface or no longer contacts the handrail surface, there is almost no wear despite the speed difference between the two surfaces.

[0015] In another design, the device has a transmission member through which the rotational motion of the wheel body is transmitted to the squeezing roller at a predetermined speed ratio and in the opposite rotational direction. By using such a transmission member, the optimal rotational speed of the squeezing roller relative to the rotational speed of the wheel body can be set and maintained, thereby also minimizing the wear of the strap.

[0016] In another design, the device includes a discharge device that is arranged below the squeezing roller with respect to the specified use position of the device in an escalator or a moving walkway and with respect to the direction of gravity. Thereby, the liquid extruded from the strap can be transferred to the desired position to prevent the liquid from returning to the handrail surface.

[0017] In addition, the device may have a guiding device. The guiding device conveys the fluid that accumulates on the surface of the handrail and cannot be reached by the strap to the strap of the wheel body.

[0018] Not only will liquid accumulate on the handrail surface, but there are also dirt particles. These dirt particles come from the environment or the wear process of escalator or moving walk components and also affect the frictional condition between the handrail drive wheel and the handrail. Since the absorbent strap is compressible and thus "soft", the dirt particles can easily be pressed into its surface and adhere there. Thus, in another design, the device has a brush which is adjustable to fit the absorbent strap of the wheel body and is fixed to a bearing device. Preferably, the dirt particles removed by the brush are also conveyed into the above-mentioned discharge device. This can be achieved in connection with the rotational movement of the strap relative to the fixed brush, by means of a suitable shaping of the brush (e.g. a wedge-shaped plough).

[0019] In order to ensure that the return run-around section of the handrail is safely guided in an escalator or a moving walk, a plurality of support rollers or sliding guides are usually provided. One of the support rollers or one of the sliding guides can be assigned to the handrail drive or the device.

[0020] If the handrail drive or the device has a sliding guide for the handrail, the guide surface of the sliding guide extends parallel to the direction of movement of the handrail. In a preset use position, the axle of the device is orthogonally oriented to the direction of movement of the handrail, and the sliding guide and the wheel body are arranged on the same side of the handrail.

[0021] If the handrail drive or the device has a support roller for the handrail, the support roller is arranged to be rotatably supported in the escalator or the moving walk by means of its support roller axle parallel to the axis of rotation of the handrail drive wheel. In a preset use position, the axle of the device is oriented parallel to the support roller axle and the axis of rotation, and the handrail is guided through between the support roller and the wheel body.

[0022] Depending on the material used for the strap (e.g. felt), squeezing it when absorbing liquid is not recommended. However, for foam polymer materials such as foam rubber or open-cell sponge rubber, slight compression may be beneficial. Preferably, the device has an adjustment mechanism by means of which the distance between the axle of the wheel and the support roller axle can be adjusted. Thereby, the liquid absorption of the strap can be optimized, for example in such a way that the strap is slightly compressed in the area of contact with the handrail in order to achieve a sucking effect inside the strap when the strap relaxes.

[0023] In another design, an escalator or a moving walkway may have a monitoring sensor pointing to the tie belt to monitor the physical state of the tie belt. Measurement data from the monitoring sensor is transmitted continuously or periodically to the controller of the escalator or the moving walkway. These measurement data can be processed in the controller, where state criteria are stored in the controller, and the prepared and processed measurement data is compared with the state criteria. Methods for processing measurement data to obtain data comparable to the state criteria have been known for many years, so they will not be explained in detail herein. According to the comparison result of the measurement data with the state criteria, a stop command and / or a maintenance request and / or a warning message can be issued. Description of the Drawings

[0024] Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, in which, in all the drawings, similar elements have the same reference numerals. Here, neither the drawings nor the description should be construed as limiting the present invention. Among them:

[0025] Figure 1 An escalator is schematically shown in a sectional side view having handrails arranged in a winding manner and a device for removing liquid and dirt from the handrails;

[0026] Figure 2 Shown in an enlarged sectional side view according to a first implementation variant, Figure 1 of the device shown in;

[0027] Figure 3 Shown in a sectional top view Figure 2 of the device shown in, wherein the axle and the roller axle of the device are arranged in the cutting plane;

[0028] Figure 4 Shown Figure 2 a front view of the device shown in; and

[0029] Figure 5 The device according to a second implementation variant is shown in a three-dimensional view. Detailed Description of the Embodiments

[0030] Figure 1An escalator 1 having a load-bearing structure 3 is schematically shown in a sectional side view. In the load-bearing structure 3, a conveyor belt 5 having steps 7 (partially shown) is arranged to be wound around. In addition, on each side of the conveyor belt 5 on the load-bearing structure 3, a guardrail 11 is arranged (since it is a side view, only one guardrail 11 can be seen). An armrest 15 is arranged to be wound around each guardrail 11, wherein the forward winding section 13 of the armrest is for moving in the same direction and at the same speed as the walkable winding section 9 of the conveyor belt 5. The return winding section 17 of the armrest 15 and the return winding section 19 of the conveyor belt 5 are guided inside the load-bearing structure 3 and are thus hidden from the user. A drive unit 21 and a controller 23 are also arranged in the load-bearing structure 3. In addition, an armrest drive 29 is installed in the load-bearing structure 3, and the armrest drive 29 has an armrest drive wheel 25 for each of its armrests 15. The drive unit 21 is connected to the conveyor belt 5 and the corresponding armrest drive wheels 25 in a motion-transmittable manner.

[0031] In order to achieve sufficient traction between the armrest 15 and the armrest drive wheel 25, the armrest 15 is guided in such a way that it is partially wound around the armrest drive wheel 25. In two regions of the armrest 15 adjacent to the partial winding portion, devices 31 for removing liquid 99 and dirt 97 are respectively provided (see Figure 5 ). Equipping each armrest 15 with two devices 31 means that the escalator 1 is arranged to operate in two opposite movement directions Y. As long as only one movement direction Y is provided, the devices 31 are arranged adjacent to the front of the armrest drive wheel 25 taking into account the movement direction Y of the armrest 15.

[0032] Figure 2 Shown in a first design Figure 1 An enlarged sectional side view of the device 31 shown in Figure 3 Shown in a sectional top view Figure 2 The device 31 shown in Figure 4 And Figure 3 A front view of the device 31 as seen from the viewing direction A shown in

[0033] The device 31 for removing liquid 99 and dirt has a bearing device 35, a wheel body 37 with a compressible adsorbent strap 33, a squeezing roller 39, a wheel shaft 47 and a roller shaft 49. The wheel body 37 is rotatably supported in the bearing device 35 by the wheel shaft 47, and the squeezing roller 39 is rotatably supported in the bearing device 35 by the roller shaft 49. In this case, the axial spacing K between the wheel shaft 47 and the roller shaft 49 is defined or set in such a way that the adsorbent strap 33 of the wheel body 37 is compressed in the contact area Z between the wheel body 37 and the squeezing roller 39.

[0034] In order for the handrail 15 to reach the handrail drive wheel 25 without accumulating excessive amounts of liquid and dirt residues, the strap 33 of the wheel body 37 remains in contact with the same surface 27 of the handrail drive wheel 25 that contacts the handrail 15, or rather, the strap 33 of the wheel body 37 and the handrail drive wheel 25 remain in contact with the same surface 27 of the handrail 15. Accordingly, the device 31 continuously removes the liquid 99 and dirt 97 from this surface 27.

[0035] On both sides of the wheel body 37, two friction wheels 41 are arranged on the wheel axle 47 and are firmly connected to the wheel body 37. The friction wheels 41 convert the linear movement B of the handrail 15 into a rotational movement M and transmit it to the wheel body 37. The advantage of this is that the transmission of the rotational movement M does not have to be carried out via the strap 33 and thereby increase wear. As can be seen from this embodiment, due to the speed ratio resulting from the geometric conditions, the cylindrical surface 34 of the strap 33 moves faster than the surface 27 of the handrail with which it is in contact. In order to minimize wear, the strap 33 should cover the surface 27 of the handrail 15 in a manner with as little compression or even no contact as possible.

[0036] The strap 33 soaked with the liquid 99 is squeezed by the squeezing roller 39 such that the previously absorbed liquid 99 is continuously squeezed out of the strap 33. In order to prevent the squeezed-out liquid 99 from flowing back to the surface 27 of the handrail 15, the device 31 has a discharging device 51. With respect to the preset use position of the device 31 in the escalator 1 or moving walkway and with respect to the direction of gravity G, this discharging device is arranged below the squeezing roller 39.

[0037] In order to ensure that the handrail 15 is always in the correct position relative to the strap 33, the handrail drive 29 or the device 31 has a support roller 53 for the handrail 15. The support roller 53 is rotatably supported on the escalator 1 or moving walkway by means of its support roller axle 57. The wheel axle 47 of the wheel body 37 is arranged parallel to the support roller axle 57 and the rotational axle 55 of the handrail drive wheel 25 (see Figure 1 ). The handrail 15 is guided through between the support roller 53 and the wheel body 37. Preferably, the device 31 has an adjustment mechanism 36 by means of which the distance H between the wheel axle 47 and the support roller axle 57 can be adjusted. The liquid absorption of the strap 33 can be optimized by using a suitable strap material in such a way that in the area in contact with the handrail 15, the strap 33 is slightly compressed so as to achieve a sucking effect inside the strap when it subsequently loosens.

[0038] Figure 5 A schematic three-dimensional view of the device 61 is shown in a second design. For the sake of clarity, the illustration of the bearing device is omitted. In order to adjust the degree of compression of the strap 33, the device 61 has a calibration mechanism 63 by means of which the axial spacing K between the roller axle 49 and the wheel axle 47 can be adjusted.

[0039] Different from the above-described device 31, Figure 5 the device 61 in Figure 5 does not include a friction wheel 41, but includes a motor 69 and / or an input shaft 65, wherein the motor 69 or the input shaft 65 is arranged to transmit a rotational movement M to the wheel body 37. The input shaft 65 can be connected not only to the motor 69, but also to a gear ratio transmission member (not shown) that transmits the rotational movement M of the drive unit 21 (see Figure 1 ) to the wheel body 37.

[0040] Figure 5 The device 61 shown in also includes a transmission member 71. By means of this transmission member 71, the rotational movement M of the wheel body 37 is transmitted to the pressing roller 39 at a predetermined gear ratio and in the opposite rotational direction. Since the pressing roller 39 compresses the strap 33, the circumferential speed of the strap surface changes in the contact area Z, which causes a relative movement between the surface of the strap 33 and the surface of the pressing roller 39. In order to minimize the relative movement and wear phenomenon on the strap 33 as much as possible, the gear ratio can be selected, for example, in such a way that the circumferential speed of the pressing roller 39 is equivalent to the reduced circumferential speed of the strap 33, so as to minimize the differential speed generated on the surfaces of the strap 33 and the pressing roller 39 due to the compression of the adsorptive strap 33.

[0041] In addition, the device 61 has a brush 73, which can be adjusted towards the adsorptive strap 33 of the wheel body 37 and is fixed on the bearing device 35. The shape of the brush 73 is selected in such a way that due to the rotational movement M of the strap 33 relative to the fixed brush 73, the dirt particles 97 removed by the brush 73 are also fed into the discharge device 51 introduced previously. The dirt particles 97 conveyed to the discharge device 51 are washed away by the extruded liquid 99.

[0042] As an alternative or supplement to the support roller 53 already introduced, the handrail drive 29 or the device 61 can have a sliding guide 75 for the handrail 15. The guide surface 77 of the sliding guide is arranged parallel to the longitudinal extension or the movement direction Y of the handrail 15 in the escalator 1 or the moving walkway. The wheel axle 47 of the device 61 is arranged orthogonally to the movement direction Y of the handrail 15 in its preset working position. The sliding guide 75 and the wheel body 37 are arranged on the same side of the handrail 15. Similar to the distance H of the support roller 53, the distance X between the guide surface 77 and the wheel axle 47 is preferably also adjustable.

[0043] From Figure 5As can be seen, the surface 27 of the handrail 15 is wider than the strap 33. Therefore, the device 61 can have a guiding device 79. By means of the guiding device 79, the liquid 99 that accumulates on the surface 27 of the handrail 15 and cannot be reached by the strap 33 of the wheel body 37 can be conveyed to the strap 33. In the present embodiment, the guiding device 79 is integrated in the sliding guide 75. Of course, the guiding device 79 can also be provided with, for example, a guide plate or a twisting roller. The guiding device 79 does not have to be part of the sliding guide 75.

[0044] Figure 5 The device 61 shown in the figure has a monitoring sensor 81 pointing to the strap 33 for monitoring the physical state of the strap 33. Any type of sensor, such as an optical sensor, a distance sensor, a proximity sensor, etc., can be used as the monitoring sensor 81. For example, it can detect the dissolution phenomenon of the strap 33. In the present embodiment, the measurement data 83 from the monitoring sensor 81 is transmitted to the controller 23 of the escalator 1 or the moving walkway. The measurement data 83 is processed in the controller 23 and compared with a status criterion (not shown). If the detected condition no longer conforms to the specified status criterion, a stop command 85 can be issued to the drive 21 or the motor 69 and / or a maintenance request 87 can be issued to the maintenance center 89 and / or a warning message 91 can be issued to the communication unit 93 according to the detected condition.

[0045] Although the present invention has been introduced by describing specific embodiments, obviously, many other design variants can also be proposed using the knowledge of the present invention, for example, by using one or more features shown and introduced only in the second design variant and one or more features shown and introduced in the first design variant.

Claims

1. An escalator (1) or moving walkway having at least one movably arranged handrail (15) that is looped around and having a handrail drive (29) with a handrail drive wheel (25), the handrail drive wheel being arranged in the region of the return run section (17) of the handrail (15), and the handrail (15) being drivable by the handrail drive wheel (25), wherein, An escalator (1) or a moving walkway includes at least one device (31, 61) for removing liquid (99) and dirt (97) for each handrail in its handrail (15), wherein the device (31, 61) includes bearing means (35), a wheel body (37) with an adsorbent strap (33) that can be compressed, a squeezing roller (39), a wheel shaft (47) and a roller shaft (49), wherein the wheel body (37) is rotatably supported in the bearing means (35) by means of the wheel shaft (47), and the squeezing roller (39) is rotatably supported in the bearing means (35) by means of the roller shaft (49), and the axial spacing (K) between the wheel shaft (47) and the roller shaft (49) is defined or adjusted in such a way that the squeezing roller (39) compresses the adsorbent strap (33) in the contact area (Z), characterized in that the strap (33) of the wheel body (37) remains in contact with the same surface (27) of the handrail (15) that is in contact with the handrail drive wheel (25).

2. The escalator (1) or moving walk according to claim 1, wherein, The device (31, 61) is arranged immediately in front of the handrail drive wheel (25) with respect to the direction of movement (Y) of the handrail (15).

3. An escalator (1) or moving walk according to claim 1 or 2, wherein, With respect to the two possible directions of movement (Y) of the handrail (15), the devices (31, 61) are arranged on both sides of the handrail drive wheel (25).

4. An escalator (1) or moving walk according to any one of the preceding claims, wherein, The device (31, 61) has a calibration mechanism (63) by means of which the axial spacing (K) between the roller shaft (49) and the wheel shaft (47) can be adjusted.

5. An escalator (1) or moving walk according to any one of the preceding claims, wherein, The device (31, 61) has a friction wheel (41) that converts the linear movement (B) of the handrail (15) into a rotational movement (M) and transmits the rotational movement to the wheel body (37).

6. An escalator (1) or moving walk according to any one of the preceding claims, wherein, The device (31, 61) includes a motor (69) and / or an input shaft (65), and the motor (69) or the input shaft (65) is arranged to transmit a rotational movement (M) to the wheel body (37).

7. An escalator (1) or a moving walk according to any one of the preceding claims, wherein, The device (31, 61) includes a transmission member (71) through which the rotational movement (M) of the wheel body (37) is transmitted to the squeezing roller (39) at a predetermined speed ratio and in the opposite rotational direction.

8. An escalator (1) or a moving walk according to any one of the preceding claims, wherein, The device (31, 61) includes a discharge device (51) that is arranged below the squeezing roller (39) with respect to the preset use position of the device (31, 61) in the escalator (1) or the moving walkway and with respect to the direction of gravity (G).

9. An escalator (1) or moving walk according to any one of the preceding claims, wherein, The device (31, 61) includes a brush (73) that is fixed to the bearing means (35) in such a way that it can be adjusted relative to the adsorbent strap (33) of the wheel body (37).

10. An escalator (1) or a moving walk according to any one of the preceding claims, wherein, The handrail drive (29) or the device (31, 61) has a sliding guide (75) for the handrail (15), the guide surface (77) of the sliding guide being arranged parallel to the direction of movement (Y) of the handrail (15) in the escalator (1) or moving walkway, wherein, in a preset use position, the axle (47) of the device (31, 61) is arranged orthogonally to the direction of movement (Y) of the handrail (15), and the sliding guide (75) and the wheel body (37) are arranged on the same side of the handrail (15).

11. An escalator (1) or moving walk according to any one of the preceding claims, wherein, The handrail drive (29) or the device (31, 61) has a support roller (53) for the handrail (15), the support roller (53) being rotatably supported in the escalator (1) or moving walkway by means of a support roller axle (57) arranged parallel to the axis of rotation (55) of the handrail drive wheel (25), wherein, in a preset use position, the axle (47) of the device (31, 61) is arranged parallel to the support roller axle (57) and parallel to the axis of rotation (55), and the handrail (15) is guided through between the support roller (53) and the wheel body (37).

12. The escalator (1) or moving walk according to claim 11, wherein, The device (31, 61) includes an adjustment mechanism (36) by means of which the distance (H) between the axle (47) and the support roller axle (57) can be adjusted.

13. An escalator (1) or a moving walk according to any one of the preceding claims, wherein, The escalator or moving walkway has a monitoring sensor (81) directed at the belt (33) for monitoring the physical state of the belt (33).

14. The escalator (1) or moving walk according to claim 13, wherein, The measurement data (83) of the monitoring sensor (81) can be transmitted to the controller (23) of the escalator (1) or moving walkway, and the measurement data (83) can be processed in the controller (23) in order to output a stop command (85) and / or a maintenance request (87) and / or a warning message (91) based on the processing result.

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