Vehicle crane cabin with swing door

Abstract

We provide a vehicle crane cabin with an optimized swing door. [Solution] The present invention relates to a cabin (8) of a vehicle crane, comprising a swing door (9) fixed to the cabin (8) via a lower door mechanism (12) and an upper door mechanism, and movable between a closed position and an open position, wherein the lower door mechanism (12) is configured in the shape of a parallelogram. To provide an optimized swing door for a working machine, particularly a cabin of a vehicle crane, it is proposed that the movement of the swing door (9) between a closed position and an open position can be locked by a locking brake (15), and that the locking brake (15) acts on the lower door mechanism (12).

Description

TECHNICAL FIELD

[0001] The present invention relates to a cabin for a mobile crane, which is provided with a swing door that is fixed to the cabin via a lower door mechanism and an upper door mechanism, and is movable between a closed position and an open position.

[0002] German Laid-Open Patent Publication No. 103 61 831 A1 already discloses a cabin with a single-swing swing door for use in cranes or excavators. This swing door can be used to close and open a door opening arranged on the side of the cabin. For this purpose, the swing door is suspended inward at its upper end via a support joint having a vertical pivot axis in the region above the door opening. This support joint is intended to support the weight of the swing door, is fixed to a bent support arm, and its opposite end terminates in a vertical rotating rod. The rotating rod is rotatably mounted at the top and bottom inside the cabin adjacent to the long side of the door opening. To open and close the swing door, the rotating rod is driven around its central axis in the direction of rotation. Furthermore, the swing door is connected to the cabin via a further guide lever at the upper part and via two additional guide levers at the lower part. Via a total of three guide levers and the support arm, the swing door can be moved into and out of the door opening in a stable manner over a defined movement path. The entire swing door moves in a parallelogram configuration via the guide levers and the support arm. In this case, the section of the movement path between the direct closing and opening of the door opening by the swing door is substantially linear, so that the rubber seal provided on the swing door and the door opening is only stressed in the sealing direction and will not be deformed by lateral forces.

[0003] Furthermore, European Patent Specification No. 1 085 154 B1 already discloses a sliding door for the cabin of construction machinery, in particular a hydraulic excavator or vehicle crane. The sliding door is guided vertically via rollers in guide rails within the cabin. To open and close the sliding door or the door opening of the cabin, the guide rails are formed in an arc shape at one end of each.

[0004] Subsequently, German Patent Publication No. 10 2023 131 660 A1 also discloses a cabin for a mobile crane having a driveable swing door. This swing door is fixed to the cabin via a first lower rocker arm and a second upper rocker arm. The swing door can move from a closed position to an open position and vice versa via a drive mechanism acting on the second upper rocker arm. The swing door can also be locked in a stepless manner between the closed and open positions via a latching mechanism or a braking mechanism.

[0005] Furthermore, Publication No. US 2020 / 0 181 966 A1 discloses a wheel loader cabin with a revolving door that can be held in all intermediate positions. The revolving door is driven via an electric motor in conjunction with a self-locking worm gear for stopping the revolving door.

[0006] The object of the present invention is to provide a vehicle crane cabin equipped with an optimized swing door.

[0007] This objective is achieved by a swing door having the features of claim 1. Advantageous embodiments of the present invention are described in dependent claims 2 to 12.

[0008] According to the present invention, in a vehicle crane cabin equipped with a swing door fixed to the cabin via a lower door mechanism and an upper door mechanism, and movable between a closed position and an open position, wherein the lower door mechanism is configured in the shape of a parallelogram, the optimization of the swing door is achieved by the fact that the movement of the swing door between the closed position and the open position can be locked by a locking brake, and the locking brake acts on the lower door mechanism. In this way, the crane operator can set the swing door to any open position for the purpose of ventilating the cabin or communicating with the outside. Even when the cabin is tilted to an inclined working position, the locking brake prevents the swing door from opening unexpectedly due to the tilt of the cabin. Particularly advantageous is that, since the locking brake acts on the lower door mechanism, it is positioned on the cabin floor without obstructing the crane operator's view. Furthermore, the upper door mechanism is kept free of other components that may obstruct the crane operator's upward view.

[0009] In certain embodiments, a configuration is provided in which the locking brake is electrically and / or continuously variable.

[0010] The fact that the locking brake is electrically operable and includes brake discs and brake shoes is structurally particularly advantageous.

[0011] The advantages of the swing door in terms of operation and safety are evident from the fact that the locking force of the locking brake can be set to ensure that the swing door is securely held in any position between the closed and open positions, including the closed and open positions, but nevertheless allows for emergency opening at any position.

[0012] It is structurally advantageous that the swing door can be moved between the closed and open positions manually by a crane operator, rather than being driven by a motor.

[0013] A particularly advantageous feature is that the upper door mechanism has a single upper guide lever, which is fixed to the swing door via a first upper guide joint and to the cabin via a second upper guide joint. This means that the cabin roof can be configured to be as transparent as possible without the upper door mechanism obstructing the crane operator's view through the cabin roof. The cabin according to the present invention is characterized by being robust while being highly easy to operate when opening and closing. The swing door itself is ideal for accessing and entering the cabin.

[0014] A particularly structural advantage is that the lower door mechanism has a first support lever and a second support lever, the first of which is fixed to the swing door via a first lower support joint and to the cabin via a third lower support joint, and the second support lever is fixed to the swing door via a second lower support joint and to the cabin via a fourth lower support joint. The lower door mechanism is designed to be stable and supports most of the weight of the swing door, so the upper door mechanism can consist of a single upper guide lever. Overall, the swing door is suspended at only three points. This suspension is inherently rigid. Furthermore, this suspension does not require guide rails to be placed in the cabin and is structurally simple.

[0015] The speed at which the swing door moves is limited by a gas spring attached to the lower door mechanism. The gas spring facilitates the opening of the swing door up to its dead center and ensures that the swing door opens further to the rearmost stopper in the open position. To close the door from the rearmost stopper in the open position to the dead center of the gas spring, the gas spring again provides assistance and ensures that the swing door closes easily after the dead center of the gas spring.

[0016] In a structurally advantageous embodiment, a configuration is provided in which the gas spring is articulated between a first or second support lever and the cabin floor. In an alternative embodiment, a configuration may also be provided in which two gas springs are attached to both support levers.

[0017] A particular advantage is that the support tube is positioned between the first lower support joint and the first upper support joint. In this case, the support tube is attached to the swing door in an advantageous manner and therefore moves outward with the swing door, without reducing the interior space of the cabin and / or the size of the door opening.

[0018] The operation of the swing door is optimized by a damper attached to the lower door mechanism, which dampens the movement of the swing door in the open position. This damper also acts as a rear stopper, preventing the swing door from colliding with the side of the cabin.

[0019] The ability of the cabin to tilt up and down relative to the work machine around the horizontal pivot axis allows the crane operator to adapt their working field of view in terms of horizontal orientation to the situation.

[0020] In the context of the present invention, the term "vehicle crane" is understood to mean either a mobile crane or telescopic jib crane having a lower running body with rubber tires that can travel on public roads, or a crawler crane having a grid mast jib. Due to its robust design and optimized movement path when open and closed, the swing door according to the present invention described above is particularly suitable for cabins with a variable tilt angle. [Brief explanation of the drawing]

[0021] The present invention will be described in more detail below with reference to exemplary embodiments shown in the drawings. [Figure 1] Figure 1: Schematic diagram of a vehicle crane with a telescopic jib. [Figure 2]Figure 2: Perspective view of the cabin with the swing door closed. [Figure 3] Figure 3: Side view of the upward-sloping cabin [Figure 4] Figure 4: Cabin with the swing door closed and another perspective view of the associated door mechanism. [Figure 5] Figure 5: Floor plan of the cabin with a lower door mechanism. [Figure 6] Figure 6: Perspective view of the upper door mechanism [Figure 7] Figure 7: Perspective view of the lower area of ​​the swing door

[0022] Figure 1 shows a schematic view from one side of a vehicle crane 1, specifically a mobile crane, parked on a level ground U. The vehicle crane 1, which is capable of traveling on public roads, has a multi-axle lower vehicle 2 with wheels 3 fitted with pneumatic tires. An upper vehicle 4 is mounted on the lower vehicle 2, which is pivotable about a vertical axis relative to the lower vehicle 2. A telescopic jib 5 is mounted on the upper vehicle 4 so as to be able to rake around a horizontal axis, and a counterweight 4a is attached to its rear end. The telescopic jib 5 typically consists of a number of jib components 6, in particular an external base box 6a that houses multiple internal boxes 6b of the telescopic jib 5, which are extendable and retractable. In the retracted state, the internal boxes 6b are almost completely contained within the base box 6a. The base box 6a is articulated on the upper vehicle 4 so that the telescopic jib 5 can be raised and lowered. A hoisting rope 7 extends beyond the free end of the telescopic jib 5, particularly beyond its rearmost internal box 6b, from which a load-lifting means (e.g., a load hook, or a lower block for rope passage equipped with a load hook) not shown is suspended. The lower traveling body 2 is found to have a driver's cab 2a at its front end, particularly for the vehicle crane 1 to travel on roads and rough terrain.

[0023] Furthermore, Figure 1 shows that a separate cabin 8 for the crane operator is arranged at the front end of the upper traveling body 4. This cabin 8 is fixed to the upper traveling body 4 so as to be tiltable via a pivot axis S. In this case, the pivot axis S is oriented horizontally and transversely with respect to the upper traveling body 4, and extends parallel to the luffing axis W on which the telescopic jib 5 is mounted to the upper traveling body 4. Furthermore, when viewed in the vertical direction, the pivot axis S is arranged substantially at the center and on the back side of the cabin 8. The fact that the cabin 8 can be tilted up and down makes it easier for the crane operator to observe the telescopic jib 5 and any load suspended from the telescopic jib 5 during operation of the mobile crane 1, particularly from an ergonomic point of view. Thereby, the working field of view of the crane operator can be adapted to the situation.

[0024] Figure 2 shows a perspective view of the cabin 8 provided with a swing door 9 that closes the door opening 10 of the cabin 8 in the closed position. For clarity, the cabin 8 is shown without the upper traveling body 4 and installation elements (for example, a seat with control elements). Naturally, the door opening 10 is almost completely hidden by the swing door 9. The cabin 8 as a whole has the shape of an elongated upright cuboid, the length of the cabin 8 viewed in the longitudinal direction of the upper traveling body 4 is approximately equal to the height of the cabin 8, and the width of the cabin 8 provides sufficient space for a non-illustrated seat provided with control elements for the crane operator. The width of the cabin 8 corresponds to approximately half of the height or length of the cabin 8. Corresponding to the cuboid shape of the cabin 8, it has a front face 8a, a back face 8b, a left side face 8c, a right side face 8d, a floor 8e, and a roof 8f. In this case, the front face 8a is oriented forward with respect to the upper traveling body 4, that is, arranged at the end opposite to the counterweight 4a of the upper traveling body 4. Except for the floor 8e, the front face 8a, the back face 8b, the left side face 8c, the right side face 8d, and the roof 8f are each provided with at least partially transparent window panes 11 like windows, and the swing door 9 is provided with an at least partially transparent door window pane 9a.

[0025] As is also apparent from Figure 2, the flat roof 8f provided with the window panel 11 at the front portion is inclined rearward from the front surface 8a toward the rear surface 8b, and is inclined downward at an inclination angle in the range of 5 to 20° with respect to the floor 8e. As a result, the upper horizontal cross profile 8g (as a contour that obstructs the wedge angle of the crane operator's field of view) between the two A-pillars on the front surface of the cabin 8 is displaced upward, so that the wedge angle of the field of view of the crane operator in the cabin 8 at any inclination is improved, thereby increasing the overall wedge angle of the field of view for tracking the load compared with other cabins. Furthermore, rainwater can flow down more easily from the roof 8f, and will not drip from the front into the interior of the cabin 8 when the front window panel is open. Therefore, any rainwater can flow out more easily from the roof 8f. In the basic position of the non-inclined cabin 8, the floor 8e is oriented horizontally. Furthermore, as described above, in order to facilitate the work of the crane operator, the front half of the cabin 8 is substantially, that is, 80% or more, composed only of the window panel 11 and the door window panel 9a. All the window panels 11 are tinted, and further provided on the inner side with a shade, which is provided in particular by a roller blind.

[0026] Figure 2 shows the swing door 9 in the closed position. In order to open the swing door 9, via a door mechanism described later, the swing door 9 first moves substantially linearly outward from the closed position within the door opening 10, and then moves rearward along the left side surface 8c in a uniform arcuate path, as a result, in the open position, the door opening 10 is substantially completely, that is, 90% or more, unobstructed.

[0027] Overall, the swing door 9 is designed as a frame with a door window panel 9a. The swing door 9 is substantially rectangular with a cornered bulge at the front, and the cornered frame consists of a rear frame 9c, first and second front frames 9d, 9e forming an obtuse angle, a top frame 9f, and a bottom frame 9g. This frame design is robust and resistant to twisting, ensuring that the swing door 9 opens and closes smoothly even when the cabin 8 is tilted. Furthermore, the frame design, consisting of profiles formed by continuous casting, allows for the integration of design elements and additional functional elements. The cabin 8 is also constructed as a frame consisting of profiles formed by continuous casting.

[0028] Figure 3 shows a side view of an upward-tilting cabin 8 with a swing door 9 in the closed position. The cabin 8 is tilted upward by approximately 15° around the pivot axis S from the horizontal position. The stepless slewing range of the cabin 8 is 0 to 30°. It is also evident that, on the left side and the right side (not shown) 8c, 8d, the lower areas 9b, 11a of the door window panel 9a and window panel 11 are not completely transparent for aesthetic reasons, but preferably have an opaque black lining. This does not obstruct the visibility of the crane operator's surroundings. The same applies to the roof 8f, which has already been shown in Figure 2.

[0029] Figure 4 shows the closed swing door 9 from the inside, and the right side 8d of the cabin 8 is shown in another partially transparent perspective view to reveal the associated lower and upper door mechanisms 12, 13 on the floor 8e. For this purpose, the floor 8e is configured as a hollow floor having an inner upper floor surface facing the crane operator and a lower outer floor surface that forms the exterior of the cabin 8. The lower door mechanism 12 is located within this cavity. Furthermore, the swing door 9 is additionally shown with hatching in an open position, moved rearward and nearly touching the left side 8c.

[0030] When the floor 8e is viewed from above, the lower door mechanism 12 has a substantially parallelogram shape, and this shape is, - A first lower support joint 12a is a pivot joint located at the rear lower end of the swing door 9 and having a vertical axis of rotation. - A second lower support joint 12b is located at the front lower end of the swing door 9 and is a pivot joint that also has a vertical axis of rotation. -A third lower support joint 12c is located within the floor 8e, offset inward and rearward from the first lower support joint 12a, and is a swivel joint having a vertical axis of rotation. -A fourth lower support joint 12d is located within the floor 8e, offset inward and rearward from the second lower support joint 12b, and is a swivel joint having a vertical axis of rotation. - A first support lever 12e is articulated between the first lower support joint 12a and the third lower support joint 12c, and -A second support lever 12f is articulated between the second lower support joint 12b and the fourth lower support joint 12d. The first and second support levers 12e and 12f are located in a common horizontal plane. The lower door mechanism 12 is dimensioned to support substantially the entire weight of the swing door 9.

[0031] Between the open and closed positions, the first and second support levers 12e and 12f move approximately 70 to 75° around the third and fourth lower support joints 12c and 12d, respectively.

[0032] The upper door mechanism 13 has a guiding function rather than a supporting function, and therefore differs in structure from the lower door mechanism 12. The upper door mechanism 13 has a very simple structure, and this structure is - A first upper guide joint 13a is a pivot joint located at the rear upper end of the swing door 9 and having a vertical axis of rotation. -On the roof 8f, a second upper guide joint 13b is positioned offset inward and rearward relative to the first upper guide joint 13a, and is a ball joint having a vertical axis of rotation, and -It includes an upper guide lever 13c arranged in an articulated manner between the first upper guide joint 13a and the second upper guide joint 13b. The first upper guide joint 13a and the first lower support joint 12a are positioned so that one is above the other when viewed vertically, and their vertical axes of rotation are aligned with each other. Furthermore, the first upper guide joint 13a and the first lower support joint 12a are connected to each other via a support tube 14, thereby stabilizing the lower and upper door mechanisms 12, 13 relative to each other. The support tube 14 extends parallel to the rear frame 9c of the swing door 9, with a small gap between them, and is fixed only to the first upper guide joint 13a and the first lower support joint 12a. The support tube 14 is not attached at the top to the roof 8f and at the bottom to the floor 8e, as in other door mechanisms. Unlike the lower door mechanism 12, the upper door mechanism 13 does not have third and fourth upper guide joints, nor does it have a second guide lever. The upper guide lever 13c guides the swing door 9 and, when the swing door 9 is in the closed position, holds the swing door 9 in the closed position, that is, presses the swing door 9 into the door opening 10, via the arrangement of the second upper guide joint 13c which is positioned displaced rearward on the roof 8f.

[0033] Overall, it is clear that the swing door 9 is held and guided via the first and second lower support joints 12a, 12b and the first upper guide joint 13a, and is therefore held in a total of three places. Furthermore, transferring the support function to the lower door mechanism 12 and placing it on the floor 8e is advantageous because it allows for a structurally simpler design of the upper door mechanism 13, thereby not obstructing the crane operator's visibility around them. The lower door mechanism 12 is then covered from above by the intermediate floor. Also, since a single second upper guide joint 13b is positioned on the roof 8f offset inward and significantly rearward relative to the first upper guide joint 13a, the crane operator's upward view is not obstructed by the upper door mechanism 13. In relation to the length of the roof 8f, the second upper guide joint 13b is positioned in the rear third of the roof 8f. Therefore, the window panel 11 on the roof 8f is opaque (non-transparent) only in a small rear area 11b.

[0034] Figure 5 shows a plan view of the floor 8e of the cabin 8 and the lower door mechanism 12, which will be described with reference to the details of the lower door mechanism 12. In this case as well, the swing door 9 is additionally shown in the open position, moved rearward and lying almost touching the left side 8c, as shown by the dotted line illustration. An elongated strip-shaped connector 12g is positioned between the first support lever 12e and the second support lever 12f, similarly via a vertical pivot axis. The connector 12g stabilizes the parallelogram on one hand and acts as a fixed base for the gas spring 12h on the other, which is supported at one end by the second support lever 12f in the area of ​​the fourth lower support joint 12d and at the other end by the floor 8e in the area of ​​the first lower support joint 12a. Alternatively, the gas spring 12h may be provided on the first support lever 12e, or two gas springs 12h may be provided on each of the two support levers 12e and 12f. In this way, the gas spring 12h dampens the movement between opening and closing, thereby facilitating the manual opening and closing of the swing door 9. A damper 12i, which acts as a rear stopper for the swing door 9 in the open position, is positioned between the floor 8e and the end of the first support lever 12e closest to the swing door.

[0035] In addition, a locking brake 15 is provided that allows the swing door 9 to be locked in any position between the closed and open positions in a stepless manner. For this purpose, a segment of the brake disc 15a is positioned concentrically with the first lower support joint 12a in the area of ​​the first lower support joint 12a. The brake disc 15a can be locked in a stepless manner via the drive unit 15b and the brake shoe 15d. This type of locking brake 15 exhibits low wear. The brake is operated via the drive unit 15b, which is an electric motor with a worm gear, and acts on the brake shoe 15d via a lever mounted in this position, through a linkage 15c that is linearly driven by the worm gear. The linkage 15c operates the brake shoe 15d by pulling it. The locking brake 15 allows the crane operator to adjust the swing door 9 to any open position for ventilation of the cabin 8 and communication with the outside, even when the cabin 8 is tilted to an inclined working position. The swing door 9 is also securely held in the closed and open positions. The locking brake 15 prevents the swing door 9 from opening unexpectedly due to the tilting of the cabin 8. The locking force is adjustable via a spring 15e between the linkage 15c and the brake shoe 15d, and may be configured such that the swing door 9 is fixed in any tilted position of the cabin 8, and can be opened in an emergency (especially from the outside) at any point. The locking force of the locking brake 15 can be adjusted via an adjustment screw 15f on the linkage 15c. In principle, the locking brake 15 can also be designed as a mechanical device.

[0036] The parallelogram design of the lower door mechanism 12 with two support levers 12e and 12f, their respective lengths, and the placement of the third and fourth lower support joints 12c and 12d relative to the swing door 9 are optimized so that the swing door 9 does not protrude as far outward as possible from the contour of the cabin 8 when viewed in plan. This ensures that access to the left side 8c or the platform 16 in front of the door opening 10 is not restricted as much as possible. In the open position, the swing door 9 lies almost touching the left side 8c. Figure 5 also shows that during opening and closing, the front end of the swing door 9 moves along an arc-shaped, flat travel path B, so that the swing door 9 does not protrude from the door opening 10 by more than three times its thickness during opening or closing. This ensures sufficient space for the crane operator to stand comfortably on the platform 16 while opening and closing the swing door 9. The maximum distance between the swing door 9 and the left side 8c in the open position is only about 1.5 times its thickness.

[0037] By adjusting the entire lower door mechanism 12 relative to the floor 8e, the swing door 9 can be adjusted inward and outward, as well as forward and backward, relative to the door opening 10.

[0038] Figure 6 shows a perspective view of the upper door mechanism 13. It can be seen that the first upper guide joint 13a is positioned on the rear frame 9c of the swing door 9 so as to be vertically adjustable via an elongated hole. The same applies to the lower first lower support joint 12a. The support tube 14 is directly adjacent to the first lower support joint 12a. The swing door 9 can be adjusted inward and outward, as well as forward and backward, relative to the door opening 10 via the mounting of a second upper guide joint 13b, which is a ball joint with a vertical axis of rotation located on the roof 8f.

[0039] The adjustment options for the swing door 9 relative to the door opening 10 of the cabin 8 ensure that the swing door 9 makes planar contact with the door opening 10 through its seal. This reduces seal wear and ensures a secure seal. The robustness of the swing door 9, due to its frame design, means that there is little displacement relative to the door opening 10 during operation. Nevertheless, certain maintenance intervals are required. The aforementioned adjustment options in the areas of the lower and upper door mechanisms 12, 13 make it easy and possible to readjust the swing door 9 relative to the door opening 10 based on a clear concept. These adjustment options also help to compensate for manufacturing tolerances during the initial adjustment of the swing door 9 relative to the door opening 10.

[0040] Figure 7 shows a perspective view of the lower region of the swing door 9. At the lower end, the swing door 9 has a recess 9d that extends across its entire width when viewed from the outside, providing the crane operator with more legroom. This improves stability on the platform 16 and has a positive impact on work safety.

[0041] In relation to this exemplary embodiment, the cabin 8 with the swing door 9 has been described as a component of the vehicle crane 1. In principle, this cabin 8 with the swing door 9 according to the present invention can also be used in mobile work machines, in particular construction machines such as excavators. It is also possible to equip the driver's cab 2a of the vehicle crane 1 with the swing door 9 according to the present invention. Furthermore, the terms “horizontal” and “vertical” selected in the description of the above exemplary embodiment refer to the cabin 8 and the floor 8e oriented horizontally, respectively. Furthermore, the lower door mechanism 12 can also be designed to be electrically driven. For this purpose, a configuration is provided in which an electric motor engages with a third lower support joint 12c. [Explanation of symbols]

[0042] 1. Vehicle crane 2 Lower running body 2a Driver's cab 3 wheels 4. Upper running body 4a Counterweight 5. Telescopic jib 6 Jib parts 6a Basic Box 6b Internal box 7. Hoisting rope 8 cabins 8a front 8b Back 8c Left side 8d Right side 8e floor 8th floor roof 8g Cross Profile 9 Swing Doors 9a Door window panel 9b Lower area 9c Rear frame 9d recess 9d First front frame 9e Second front frame 9f Top frame 9g bottom frame 10 Door opening 11 Window board 11a Lower area 11b Back area 12. Lower door mechanism 12a First lower support joint 12b Second lower support joint 12c Third lower support joint 12d Fourth lower support joint 12e First support lever 12f Second support lever 12g connector 12h gas spring 12i damper 13 Upper door mechanism 13a First upper guide joint 13b Second upper guide joint 13c Upper Guide Lever 14 Support tube 15 Locking Brakes 15a Brake Disc 15b Drive unit 15c linkage 15d Brake Shoes 15e Spring 15f adjustment screw 16 platforms B Travel Route S pivot axis U ground W undulation axis

Claims

1. A cabin (8) of a vehicle crane (1) is provided with a swing door (9) fixed to the cabin (8) via a lower door mechanism (12) and an upper door mechanism (13), and movable between a closed position and an open position, wherein the lower door mechanism (12) is configured in the shape of a parallelogram, characterized in that the movement of the swing door (9) between the closed position and the open position can be locked by a locking brake (15), and the locking brake (15) acts on the lower door mechanism (12).

2. The cabin (8) according to claim 1, characterized in that the locking brake (15) is electrically and / or continuously operated.

3. The cabin (8) according to claim 1 or 2, wherein the locking brake (15) is electrically operable and comprises a brake disc (15a) and a brake shoe (15d).

4. The cabin (8) according to any one of claims 1 to 3, wherein the locking force of the locking brake (15) is set such that the swing door (9) is reliably held at any point between the closed position and the open position, including the closed position and the open position, but nevertheless, emergency opening is possible at any point.

5. A cabin (8) according to any one of claims 1 to 4, characterized in that the swing door (9) is manually movable between the closed position and the open position.

6. A cabin (8) according to any one of claims 1 to 5, wherein the upper door mechanism (13) has a single upper guide lever (13c) that is fixed to the swing door (9) via a first upper guide joint (13a) and to the cabin (8) via a second upper guide joint (13b).

7. The cabin (8) according to claim 1, wherein the lower door mechanism (12) has a first support lever (12e) and a second support lever (12f), the first support lever (12e) is fixed to the swing door (9) via a first lower support joint (12a) and to the cabin (8) via a third lower support joint (12c), and the second support lever (12f) is fixed to the swing door (9) via a second lower support joint (12b) and to the cabin (8) via a fourth lower support joint (12b).

8. The cabin (8) according to claim 1, wherein a gas spring (12h) is attached to the lower door mechanism (12) to dampen the movement of the swing door (9) between the closed position and the open position.

9. The cabin (8) according to claim 8, wherein the gas spring (12h) is arranged in an articulated manner between the first support lever (12e) or the second support lever (12f) and the floor (8e) of the cabin (8).

10. A cabin (8) according to any one of claims 6 to 9, characterized in that a support tube (14) is disposed between the first lower support joint (12a) and the first upper support joint (13a).

11. A cabin (8) according to any one of claims 7 to 10, characterized in that a damper (12i) is attached to the lower door mechanism (12) to dampen the movement of the swing door (9) in the open position region.

12. A cabin (8) according to any one of claims 1 to 11, characterized in that the cabin (8) is tiltable with respect to a work machine about a horizontal pivot axis (S).

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