Work vehicle platform device and work vehicle comprising the work vehicle platform device

Abstract

Work vehicle platform device for supporting a component and / or an operator, wherein the work vehicle platform device (50) comprises a frame (52), a platform element (54) and a locking device (56), wherein the platform element (54) is supported on the frame (52), wherein the platform element (54) is movable in a translational direction between a first retracted position and a second extended position , wherein the locking device (56) is configured to block the movement of the platform element (54) in the direction of movement at the first position and at the second position, characterized in that the work vehicle platform device (50) comprises a locking device (58) which is movable between a locking position and a release position, wherein the locking device (58) in the locking position is configured to limit the movement of the platform element (54) in a direction perpendicular to the direction of movement.

Description

[0001] The invention relates to a work vehicle platform device for supporting a component or an operator. The platform device comprises a frame and a platform element, wherein the platform element is supported on the frame. The invention further relates to a work vehicle comprising such a work vehicle platform device. Description of the state of the art

[0002] Construction vehicles, such as crawler excavators or wheeled excavators, have several components or parts that require maintenance or repair. These parts or components are sometimes located at a height that prevents an operator from reaching them while standing on the ground. For example, a tank for storing aqueous urea solution (AdBlue®), also known as diesel exhaust fluid (DEF), may be positioned in such a way that refilling cannot be done while standing on the ground. A platform or ladder is required to reach and / or support the tank.

[0003] Several methods for facilitating access to the components of a work vehicle are known in the prior art. For example, JP 2011-074595 A describes a collapsible ladder for providing access to a fuel tank. JP 2011-241642 A discloses a side step device for a work machine. The side step device comprises a rotating platform that can be unfolded to assist the operator in accessing different parts of the work machine. GB 2 468 786 A discloses a semi-trailer truck with a platform. The platform has a pull-out walkway. The generic German patent DE 10 2015 007 562 A1 describes a rotary tiller with an integrated maintenance plate. The maintenance plate is designed as a sliding element of the engine cover. US 2015 / 0224936 A1 discloses a pull-out step ladder for a truck.US 2012 / 0312825 A1 discloses a stair system for mobile oil tanks. US 6 655 706 B1 describes a pull-out step for a motorhome. Summary of the invention: Technical problem

[0004] Platforms attached to a work vehicle for accessing its components are preferably small when the vehicle is in operation, while still providing a wide standing surface. As described above, this problem has been solved by providing platforms that can be folded for storage and unfolded for standing. However, the folding and unfolding process can sometimes be time-consuming and not easy to perform.

[0005] Accordingly, the object of the present invention is to provide a work vehicle platform for supporting a component and / or the operator, which can be operated easily and quickly. Solution to the problem

[0006] The problem is solved by the work vehicle platform device according to claim 1 and the work vehicle according to claim 12.

[0007] The dependent claims describe preferred embodiments of the invention.

[0008] In a first aspect, the invention relates to a work vehicle platform device for supporting a component and / or an operator. The platform device comprises a frame, a platform element, and a locking device. The platform element is supported on the frame and is movable in a translational direction between a first retracted position and a second extended position. The locking device is configured to block the movement of the platform element in the direction of movement at both the first and second positions.

[0009] The work vehicle platform device (hereinafter referred to as the platform device) is preferably designed with sufficient stability and dimensions to allow a component to be placed on it and / or an operator to stand on it. A component could be, for example, a canister or tank for transporting aqueous urea solution (AdBlue®) or other liquids. Generally, the component can be a part or unit of the work vehicle that requires replacement, refilling, servicing, or maintenance. The component can also be referred to as a work vehicle component. The platform device can be mounted on a work vehicle, such as a wheeled excavator or a crawler excavator. In particular, the platform device is mounted on the undercarriage of the work vehicle.The work vehicle preferably provides a standing position to allow access to different areas of the work vehicle in the unfolded configuration.

[0010] The frame of the platform device is preferably attached to the work vehicle, in particular to the undercarriage. In an alternative embodiment, the frame can be an integral part of the work vehicle, for example, the undercarriage. Accordingly, the platform element can be supported on the vehicle by means of the frame. The frame can have any shape, as long as it is designed to support the platform element.

[0011] The platform element can have a plate-like form. In particular, the platform element includes an area on which the operator can stand and / or a component can be attached. Specifically, the platform element includes a standing area which has means for increasing friction so that the operator and / or the component do not slip on the platform element.

[0012] The platform element can be moved relative to the frame between a first retracted position and a second extended position. The first and second positions can be called the folded and unfolded positions, respectively. Furthermore, the first position can be called the parked position, and the second position can be called the operating position. The first retracted position can be a position in which the frame element is supported against the frame when the platform device is not in use. It is preferred that the platform element is arranged against the frame in the first position so that the platform element does not protrude from the frame. Accordingly, the first position of the platform element can be a position in which the spatial dimensions of the platform device are small.The second extended position can be the position in which the platform device can be used to support a component and / or the operator. In the second position, the platform element preferably projects from the frame, particularly in the direction of movement. For example, the standing area projects from the frame so that an operator can easily stand on the platform element. Preferably, the platform element projects beyond the undercarriage in the second position, whereas in the first position, the platform element does not project from the undercarriage.

[0013] The platform element can be moved from the first position to the second position in a translational or linear motion. The movement from the first position to the second position preferably defines the direction of movement. Accordingly, the movement of the platform element from a first position to a second position cannot be a rotational movement. The movement of the platform element can be a sliding movement. For example, the platform element can be slightly lifted and then moved in the direction of movement essentially perpendicular to the lifting motion.

[0014] The locking device locks the platform element in both the first and second positions. Accordingly, it is preferred that the platform element cannot move in the direction of travel in either the first or second position. This ensures that the platform element is securely stowed and that it does not move when an operator is standing on it. The locking element preferably only blocks movement of the platform element in the direction of travel, but allows movement in a direction perpendicular to it.

[0015] The platform device allows for easy conversion from a folded to an unfolded position and vice versa by simply moving the platform in a linear direction. It is preferred that no locking of the platform element directly to the frame by fasteners is required.

[0016] It is preferred that the locking device comprises at least one locking pin and at least one first slot and one second slot, wherein the locking pin is provided on one of the platform element and the frame, wherein the first slot and the second slot are provided on the other of the platform element and the frame, and wherein the first slot and the second slot each have a longitudinal extension perpendicular to the direction of movement.

[0017] The locking pin can be designed as any projection extending from the frame or platform element. The locking pin can be welded to the respective component, or it can be an integral part of the respective component. Preferably, two locking pins are used, arranged on opposite sides of the platform element or frame.

[0018] The first and second slots can each have a U-shaped cross-section and can each be configured as a recess or opening shaped to allow the locking pin to move into the first and second slots in a direction perpendicular to the direction of movement. The slots can be attached to the frame or platform element, for example, by welding. In an alternative embodiment, the first and second slots are an integral part of the frame or platform element. The first and second slots can each have a contact element that limits the movement of the pin in a direction perpendicular to the direction of movement. This contact element can be used to support the first and second slots on the locking pin.The first slot and the second slot preferably each have side walls extending perpendicular to the direction of movement, such that the movement of the locking pin is blocked by the side walls in the direction of movement in both the first and the second slot. Preferably, two first slots and two second slots are arranged on opposite sides of the frame of the platform element.

[0019] The arrangement comprising the first slot, the second slot, and the locking pin preferably forms a means for supporting the platform element on the frame, while simultaneously providing a locking device for blocking the movement of the platform element in the direction of movement. For this purpose, the frame can include the first slot and the second slot, in particular two first slots and two second slots on opposite sides, into which the locking pin arranged on the platform element can be inserted.Alternatively, the first slot and the second slot, in particular two first slots and two second slots arranged on opposite sides, are formed in one piece in the platform element, wherein the locking pin, in particular two locking pins arranged on opposite sides, is arranged on the frame so that the platform element can be supported on the frame by attaching one of the first slot or the second slot above the locking pin.

[0020] The provision of the first slot, the second slot and the locking pin allows the platform element to be moved quickly and easily from the first position to the second position, while at the same time the platform element can be locked relative to the frame in both the first and second positions.

[0021] It is preferred that the locking pin and the first slot are arranged such that the movement of the platform element in the direction of movement is blocked by the first slot and the locking pin at the first position. It is further preferred that the locking pin and the second slot are arranged such that the movement of the platform element in the direction of movement is blocked by the second slot and the locking pin at the second position.

[0022] Preferably, the first and second slots, as well as the locking pin, are arranged to correspond to the first and second positions. However, it is possible to provide additional slots so that more positions than the first and second positions can be provided with the platform element. For example, the first and second slots can form part of a sawtooth arrangement, with the locking pin designed to be inserted into the sawtooth arrangement. In this way, a plurality of positions for the platform element relative to the frame can be provided.

[0023] The platform device comprises a locking device that is movable between a locking position and a release position, wherein the locking device in the locking position is designed to limit the movement of the platform element in a direction perpendicular to the direction of movement.

[0024] The locking device is arranged on the frame element or the platform element in such a way that it can be moved between the locking position and the release position. In the locking position, the locking device provides a means for limiting the movement of the platform element perpendicular to the direction of movement. It is preferred that the locking device is arranged such that the locking pin cannot be moved out of the first slot or the second slot in a direction perpendicular to the direction of movement.

[0025] The locking device thus provides a means of ensuring that the platform element remains in the first and second positions. Specifically, the locking device limits the movement of the platform element perpendicular to the direction of movement, so that the platform element remains in the first and second positions. In the release position, the platform element can be moved perpendicular to the direction of movement, allowing it to move between the first and second positions. Specifically, the locking pin can be removed from the first or second slot in the release position.

[0026] It is preferred that the locking device comprises a lever element, wherein the lever element in the locking position limits the movement of the platform element in the longitudinal direction of the first slot or the second slot, so that the locking pin is prevented from leaving the first slot or the second slot, and wherein the lever element in the release position allows the movement of the platform element in the longitudinal direction of the first slot or the second slot, so that the locking pin can leave the first slot or the second slot.

[0027] The lever element can be mounted on the frame and is therefore movable relative to the frame. In the locked position, the lever element limits the movement of the platform element perpendicular to the direction of movement. Alternatively, the lever is mounted on the platform element, whereby, for example, the limitation of the platform element's movement in a direction perpendicular to the direction of movement is achieved by the lever element mounted on the platform element bearing against / abutting a stopper attached to the frame. In a further alternative embodiment, the locking device can be formed by a locking bar that is movable between the locked position and the released position.

[0028] It is preferred that the lever element is freely rotatable between the locking position and the release position, wherein the lever element has an eccentric shape so that the lever element rotates from the release position to the locking position due to gravity.

[0029] It is preferred that the lever element comprises a first region, a second region and a pivot point, wherein the lever element is rotatable about the pivot point, wherein the pivot point is arranged between the first region and the second region and wherein the first region is heavier than the second region.

[0030] In particular, the lever element can rotate freely about the pivot point. The lever element is preferably attached to the frame by a pivot pin, the pivot point being an opening in the lever element into which the pivot pin is inserted. Since the first section is heavier than the second section, gravity moves the first section below the pivot point. If the first section has an elongated shape such that the dimension parallel to the direction of gravity is longer than the dimension perpendicular to the direction of gravity, the locking position is the position in which the first section is moved to its lowest position by gravity, while the release position is a position in which the lever element is rotated by an operator so that there is more space between the pivot point and the platform element.It is possible to provide a stopper to limit the movement of the lever element, for example to position the first area close to the platform element.

[0031] The second section can have an elongated shape, for example rod-like, so that an operator can easily rotate the lever element by turning the outer end of the second section. However, it is also possible to minimize the second section, so that the lever element is primarily formed by the first section and the pivot point.

[0032] In a preferred embodiment, the lever element is a one-piece element, wherein the first area has a larger volume compared to the second area.

[0033] In this embodiment, the first region is heavier than the second region due to its larger volume, while the density of the lever element is the same across its entire volume, since it is a single, monolithic element. The lever element is made of metal, for example.

[0034] It is preferred that the locking device is spaced apart from the platform element in the locking position.

[0035] In particular, the lever element is positioned such that its first section is spaced away from the platform element in the locked position. A gap or distance between the locking device and the platform element can be such that the locking device, especially the lever element, can move freely between the release position and the locked position. At the same time, the gap is dimensioned so that the platform element can only move slightly in a direction perpendicular to the direction of movement. Because of this gap, the lever element is designed to move automatically into the locked position, ensuring that activating the locking position in the release position cannot be forgotten. This increases the safety of the platform device.

[0036] It is preferred that the platform device comprises a support pin and a rod element, wherein the support pin is provided on one of the platform element and the frame, wherein the rod element is provided on the other of the platform element and the frame, and wherein the support pin and the rod element support the platform element on the frame.

[0037] For example, the support pin is arranged on the frame, and the rod element is part of the platform element. The arrangement of the rod element and the support pin allows the platform element to slide in the direction of movement. In an alternative embodiment, the rod element is arranged on the frame, while the support pin is arranged on the platform element. The rod element and the support pin are designed so that the platform element can slide relative to the frame. In a preferred embodiment, two support pins are provided on opposite sides of the platform element or the frame. The direction between the locking pin and the support pin preferably corresponds to the direction of movement.

[0038] The platform element is preferably supported on the frame by the locking pin, which engages with the first or second slot, and the support pin, which engages with the rod element. This configuration is preferably provided on opposite sides of the frame and the platform element. However, it is also possible to provide two support pins and one locking pin. The rod element can have an elongated shape, providing an extending surface on which the support pin can slide. The rod element can be a rod or a rail.

[0039] It is preferred that the locking pin be positioned higher than the support pin. In other words, the locking pin is positioned at a first height, and the support pin is positioned at a second height in the vertical direction. Accordingly, the platform element can extend obliquely in both the first and second positions.

[0040] In this preferred embodiment, the direction of movement is not parallel to the ground, but inclined at an angle. For this purpose, the locking pin is positioned higher in a direction of gravity. The third pin is located on one of the frame or platform elements, in particular on the same component as the support pin.

[0041] It is preferred that the locking pin and / or the support pin be provided with an external bushing for supporting the platform element, which is preferably made of plastic.

[0042] Providing the bushing on the support pin reduces friction between the rod element and the support pin, allowing the platform element to slide on / along the frame with minimal friction. The bushing can be rotatably mounted on the locking pin and / or the support pin. Alternatively or additionally, the bushing can be made of a low-friction material. The bushing can be made of plastic. The rod element can be any rail or component designed to rest against and slide over the support pin.

[0043] It is preferred that the platform device includes a third pin which is spaced apart from the support pin by a gap, with the rod element preferably being arranged in the gap.

[0044] The support pin is preferably located midway between the locking pin and the third pin in the direction of movement. Due to the distance between the support pin and the third pin, the rod element can be positioned between them. Since the support pin is intended to support the platform element, it is located below the rod element, while the third pin is located above it. The third pin can act as a stop to prevent the platform element from rotating around the locking pin. Therefore, the third pin can be considered a safety device to ensure that the platform element is securely fastened to the frame, regardless of the weight and position of the load acting on the platform element.

[0045] In another aspect, the invention relates to a work vehicle comprising a work vehicle platform device as described above.

[0046] In particular, the work vehicle includes one, some, a combination of or all of the features and benefits described above.

[0047] It is preferred that the work vehicle comprises an undercarriage, wherein the platform device is arranged on the undercarriage. It is further preferred that the work vehicle comprises a rotating frame which has a tank, wherein the rotating frame is preferably rotatably arranged on the undercarriage, and the platform device is arranged below the tank.

[0048] The tank is preferably a tank for storing aqueous urea solution. The tank is preferably arranged above the platform device when the slewing frame and the undercarriage both point in the forward direction (direction of travel). Accordingly, the platform device can be used to refill the tank. In particular, the direction of movement is a left-right or lateral direction of the work vehicle.

[0049] It is preferred that the work vehicle be a mobile excavator, a crawler excavator, or an earthmoving machine. Effects of the invention

[0050] The work vehicle platform device and the work vehicle provide a platform that can be safely stowed in a frame and has reduced dimensions on one side, while providing a safe standing area, especially for an operator to refill a tank of the work machine. Brief description of the drawings Fig. Figure 1 is a perspective view from the rear of a mobile excavator which has a platform device in a first position. Fig. Figure 2 is a perspective view from the front of the wheel loader. Fig. 1, wherein the platform device is in a second position. Fig. Figure 3 is a perspective view of the platform device from Fig. 1 and Fig. 2 in the second position. Fig. Figure 4 is a perspective view of the platform device. Fig. 3 in the first position. Fig. Figures 5a to 5f show cross-sectional views of the platform device, with the views showing different snapshots of the platform device as it is moved between the first position and the second position. Description of embodiments

[0051] Fig. 1 and Fig. Figure 2 represents external perspective views of the mobile excavator according to the embodiment of the present invention, while Fig. 3, Fig. 4 to Fig. Five perspective views and cross-sectional views of a platform device mounted on the mobile excavator are shown, in which the mobile excavator has been omitted.

[0052] In the following explanation, "front" refers to the front and "rear" to the rear of the work vehicle. "Left" and "right" refer to the left and right sides of the work vehicle, respectively, when viewed from the front of the vehicle. Overall configuration

[0053] A in Fig. 1 and Fig. 2 The work vehicle 10 shown is a mobile excavator and has a rotating frame 12, a work tool 14, a cab 16, an undercarriage 18, front wheels 20, rear wheels 22, work attachments 24 and a platform device 50.

[0054] The front wheels 20 and the rear wheels 22 are movably mounted on the undercarriage 18. The front wheels 20 and / or the rear wheels 22 are driven by a motor located in the work vehicle 10, which is not shown in the figures. By driving the front wheels 20 and / or the rear wheels 22, the work vehicle 10 is accelerated into motion.

[0055] The rotating frame 12 is rotatably mounted on the undercarriage 18, allowing it to rotate relative to the undercarriage 18. Several components of the work vehicle 10, such as a tank, the engine, a hydraulic pump, and the like, are mounted on the rotating frame 12. The tank stores aqueous urea solution and is located above the platform device 50 and under a cover 19. Additional service points, such as a grease pump or a fuel tank refilling system, may be located under the cover 19. The cab 16 is also mounted on the rotating frame 12, specifically on its front left side.

[0056] The working tool 14 is attached to a front face of the rotating frame 12. The working tool 14 has a boom 26, a stick 28, and a bucket, which is not shown in the figures. The boom 26 can rotate relative to the rotating frame 12, the stick 28 can rotate relative to the boom 26, and the bucket can rotate relative to the boom 26. The movement of the boom 26, the stick 28, and the bucket is driven by a boom hydraulic cylinder 30, a stick hydraulic cylinder 32, and a bucket hydraulic cylinder 34, respectively. The hydraulic fluid for moving the hydraulic cylinders 30, 32, and 34 is supplied by the hydraulic pump.

[0057] The 24 work attachments are used in the Fig. 1 and Fig. In the embodiment shown in Figure 2, the blade is formed by a front blade 36, a first rear outrigger 38, and a second rear outrigger 40. The working attachments 24 are attached to the undercarriage 18 and movably arranged relative to it. By providing hydraulic cylinders (not visible in the figures), the front blade 36, the first rear outrigger 38, and the second rear outrigger 40 can be lowered and raised relative to the undercarriage 18 by means of the hydraulic cylinders. The hydraulic cylinders are driven by hydraulic fluid supplied by the hydraulic pump located in the slewing frame 12. Overall configuration of the work vehicle platform device 50

[0058] The work vehicle platform device 50 (hereinafter referred to as the platform device) comprises a frame 52, a platform element 54, a locking device 56, and a safety device 58. The tank for storing aqueous urea solution is arranged on the rotating frame 12 above the platform device 50 and below the cover 19. The platform device 50 is designed so that an operator can stand on the platform device 50 to fill the tank. The platform device 50 is located near steps 60 and a toolbox 62. In particular, the platform element 54 is arranged below the toolbox 62 in a first position, as shown in Fig. 4 can be seen. The levels 60 are, as in Fig. 3 and Fig. 4 can be seen, on the left and above platform element 54.

[0059] The platform element 54 comprises a standing area 64 and two rod elements 66, which are attached to the standing area 64. The rod elements 66 extend along both lateral sides of the standing area 64 in the direction of movement. The rod elements 66 are spaced apart so that they are close to the frame 52. The standing area 64 is shaped to increase friction when an operator stands on it.

[0060] The frame 52 can be attached to the toolbox 62 or be an integral part of the toolbox 62. The frame 52 can extend below and in front of the toolbox 62. Alternatively, the frame 52 can be attached to the undercarriage 18 or be an integral part of the undercarriage 18. Preferably, the frame 52 is attached to both sides of the platform element 54. Locking device 56

[0061] The locking device 56 comprises two first slots 68, two second slots 70, two locking pins 72, and two support pins 74. One set of first slots 68, second slots 70, locking pins 72, and support pins 74 is arranged on one side, while the other set of first slots 68, second slots 70, locking pins 72, and support pins 74 is arranged on the opposite side of the frame 52 and the platform element 54. Fig. Figures 5a to 5f show only one of the first slot 68, the second slot 70, the locking pin 72, and the support pin 74. The first slot 68 and the second slot 70 are formed as recesses in the frame element 54, and in particular in the standing area 64. The slots 68 and 70 have a U-shaped cross-section. The slots 68 and 70 have side walls 76 that are spaced apart in the direction of movement by a distance slightly larger than the outer diameter of the locking pin 72. The first slot 68 and the second slot 70 also comprise a contact element 78 against which the locking pin 72 rests when the platform element 54 is supported by the locking pin 72. Due to the U-shaped design of the first slot 68 and the second slot 70, the locking pin 72 can be inserted into the first slot 68 or the second slot 70 by a movement perpendicular to the direction of movement.The distance between the first slot 68 and the second slot 70 determines the movement distance of the platform element 54 from the first position to the second position. If the locking pin 72, as shown in . Fig. As shown in Figure 5a, when inserted into the first slot 68, the platform element 54 is in its first retracted position. When the locking pin 72, as shown in Figure 5a, is inserted into the first slot 68, the platform element 54 is in its first retracted position. Fig. As shown in Figure 5f, when the platform element 54 is inserted into the second slot 70, it is in the second extended position.

[0062] Preferably, the locking pin 72 is an integral element of the frame 52. The support pin 74 can also be an integral part of the frame 52. An outer bushing 80, made of a low-friction material, is provided around the support pin 74, allowing the rod element 66 to slide over the support pin 74 and reducing friction between the rod elements 66 and the support pin 74. The direction of movement between the locking pin 72 and the support pin 74 defines the direction of movement of the plate element 54. The locking pin 72 is positioned higher than the support pin 74, so that the platform element 54 is inclined at an angle to a horizontal direction. The bushing 80 is made of plastic.

[0063] A third pin 81 is arranged at a distance from the support pin 74. In particular, two third pins 81 are arranged adjacent to the support pins 74. The third pins 81 are fixed to the frame 52. The rod element 66 is arranged in the gap between the support pin 74 and the third pin 81. The third pin 81 acts as a counter-stop, preventing the platform element 54 from rotating around the locking pin 72 when a load is placed on the standing area 64. Safety device 58

[0064] The locking device 58 comprises a lever element 82 having a first section 84, a second section 86, and a pivot point 88. The lever element 82 is rotatably mounted on the frame 52 by means of a pivot pin 90. The pivot point 88 surrounds the pivot pin 90, allowing the lever element 82 to rotate freely. The second section 86 has a rod-like shape. The lever element 82 is a single-piece element, while the volume of the first section 84 is larger than the volume of the second section 86. Therefore, the first section 84 is heavier than the second section 86. Consequently, gravity rotates the lever element 82 in such a way that the first section 84, as shown in the figure, rotates in a certain direction. Fig. 5a reveals that it is facing downwards.

[0065] The safety position is a position in which the first area 84, as in Fig. As shown in Figure 5a, the first section 84 of the lever element 82 is arranged in close proximity to the platform element 54. In the locked position of the locking device 58, the first section 84 of the lever element 82 is separated from the platform element 54 by a small gap. The gap is dimensioned so that the platform element 54 can move in the direction perpendicular to the direction of movement, but the locking pin 72 cannot leave the first slot 68 or the second slot 70. By rotating the lever element 82 into the release position, as shown in Figure 5a ... Fig. As shown in Figures 5b to 5e, the distance between the lever element 82 and the platform element 54 is increased so that the platform element 54 can be moved perpendicular to the direction of movement, allowing the locking pin 72 to leave the first slot 68 or the second slot 70. For this purpose, the first region 84 of the lever element 82 is shaped such that its dimension in the direction of gravity is larger than its dimension perpendicular to the direction of gravity. Function of the platform device 50

[0066] The functionality of platform device 50 is described with reference to the Fig. Explained in sections 5a to 5f. Fig. Figure 5a shows the platform element 54 in the first retracted position and the locking device 58 in the locked position. Accordingly, the locking pin 72 is inserted into the first slot 68. The platform element 54 rests on the locking pin 72 and the support pin 74. To move the platform element 54 from the first retracted position to the second extended position, the lever element 82 is used, as shown in Fig. 5b reveals that the pivot pin 90 is rotated into the release position. Accordingly, the distance between the platform element 54 and the lever element 82 is increased so that the platform element 54 is in a direction substantially perpendicular to the direction of movement, as shown in Fig. 5c shows that it can be lifted. In this way, the locking pin 72 is removed from the first slot 68.

[0067] The platform element 54 is then moved in the direction of movement until the second slot 70 is positioned above the locking pin 72. During the movement of the platform element 54 in the direction of movement, the rod element 66 slides over the support pin 74 and, in particular, over the bushing 80. Simultaneously, the lever element 82 is held in the release position. The platform element 54 is then lowered substantially perpendicular to the direction of movement so that the locking pin 72 engages in the second slot 70, as shown in Fig. 5e is shown, introduced. Afterwards, the lever element 82 is released, so that gravity rotates the lever element 82 back into the safety position, in which the first area 84, as shown in Fig.5f is shown, arranged adjacent to the platform element 54. In this second position, the platform element 54 projects from the frame 52, so that a standing area 64 is displayed, which provides space for an operator to stand on the platform element 54 or for a component to be supported on the area 64. Reference symbol list 10 work vehicles 12 rotating frames 14 work tools 16 cabins 18 undercarriages 19 Coverage 20 front wheel 22 rear wheel 24 Working attachment 26 outriggers 28 stem 30 boom hydraulic cylinders 32 stem hydraulic cylinders 34 bucket hydraulic cylinders 36 front shield 38 first hind paw 40 second hind paw 50 platform device 52 frames 54 platform element 56 Locking device 58 Safety device Level 60 62 Toolbox 64 Standing area 66 rod element 68 first slot 70 second slot 72 locking pins 74 support pins 76 side wall 78 Plant element 80 socket 81 third cone 82 Lever element 84 first area 86 second area 88 pivot point 90 pivot pins

Claims

Work vehicle platform device for supporting a component and / or an operator, wherein the work vehicle platform device (50) comprises a frame (52), a platform element (54) and a locking device (56), wherein the platform element (54) is supported on the frame (52), wherein the platform element (54) is movable in a translational direction of movement between a first retracted position and a second extended position, wherein the locking device (56) is configured to block the movement of the platform element (54) in the direction of movement at the first position and at the second position, characterized in that the work vehicle platform device (50) comprises a locking device (58) which is movable between a locking position and a release position, wherein the locking device (58) is configured in the locking position toto limit the movement of the platform element (54) in a direction perpendicular to the direction of movement. Work vehicle platform device according to claim 1, characterized in that the locking device (56) comprises at least one locking pin (72) and at least one first slot (68) and one second slot (70), wherein the locking pin (72) is provided on one of the platform element (54) and the frame (52), wherein the first slot (68) and the second slot (70) are provided on the other of the platform element (54) and the frame (52), and wherein the first slot (68) and the second slot (70) each have a longitudinal extension perpendicular to the direction of movement. Work vehicle platform device according to claim 2, characterized in that the locking pin (72) and the first slot (68) are arranged such that the movement of the platform element (54) in the direction of movement is blocked by the first slot (68) and the locking pin (72) at the first position, and that the locking pin (72) and the second slot (70) are arranged such that the movement of the platform element (54) in the direction of movement is blocked by the second slot (70) and the locking pin (72) at the second position. Work vehicle platform device according to one of claims 2 or 3, characterized in that the locking device (58) comprises a lever element (82), wherein the lever element (82) in the locking position limits the movement of the platform element (54) in the longitudinal direction of the first slot (68) or the second slot (70), so that the locking pin (72) is prevented from leaving the first slot (68) or the second slot (70), and wherein the lever element (82) in the release position allows the movement of the platform element (54) in the longitudinal direction of the first slot (68) or the second slot (70), so that the locking pin (72) can leave the first slot (68) or the second slot (70). Work vehicle platform device according to claim 4, characterized in that the lever element (82) is freely rotatable between the locking position and the release position, wherein the lever element (82) has an eccentric shape, such that the lever element (82) rotates into the locking position due to gravity. Work vehicle platform device according to claim 4 or 5, characterized in that the lever element (82) comprises a first area (84), a second area (86) and a pivot point (88), wherein the lever element (82) is rotatable about the pivot point (88), wherein the pivot point (88) is arranged between the first area (84) and the second area (86) and wherein the first area (84) is heavier than the second area (86). Work vehicle platform device according to one of claims 1 to 6, characterized in that the locking device (58) is spaced apart from the platform element (54) in the locking position. Work vehicle platform device according to one of the preceding claims, characterized by a support pin (74) and a rod element (66), wherein the support pin (74) is provided on one of the platform element (54) and the frame (52), wherein the rod element (66) is provided on the other of the platform element (54) and the frame (52), and wherein the support pin (74) and the rod element (66) support the platform element (54) on the frame (52). Work vehicle platform device according to claim 8, characterized in that the locking pin (72) is arranged higher compared to the support pin (74). Work vehicle platform device according to claim 8 or 9, characterized in that the locking pin (72) and / or the support pin (74) are provided with an outer bushing (80) for supporting the platform element (54). Work vehicle platform device according to one of claims 8 to 10, characterized by a third pin (81) which is spaced apart from the support pin (74) by a gap, wherein the rod element (66) is arranged in the gap. Work vehicle comprising a work vehicle platform device (50) according to one of the preceding claims. Work vehicle according to claim 12, characterized by a chassis (18), wherein the work vehicle platform device (50) is arranged on the chassis (18). Work vehicle according to claim 13, characterized by a rotating frame (12) having a tank, wherein the rotating frame (12) is rotatably arranged on the undercarriage (18), wherein the work vehicle platform device (50) is arranged under the tank.

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