Ramp, loading and working machine

Abstract

This invention relates to the field of vehicle accessories, providing a boarding step, a boarding mechanism, and a working device, including a folding step assembly, a first motion conversion assembly, and a second motion conversion assembly. The folding step assembly is located at the entrance of the cab. The first motion conversion assembly includes a drive member and a first guide assembly. The first guide assembly includes a fixed part and a movable part, with the movable part movably connected to the fixed part. The fixed part is connected to the cab, and one end of the drive member is rotatably connected to the door, while the other end is rotatably connected to the movable part. The second motion conversion assembly includes a follower member and a second guide assembly. The second guide assembly is connected to the cab, and one end of the follower member is connected to the movable part, while the other end is connected to the folding step assembly after being redirected by the second guide assembly. When the door is closed, the door can drive the movable part to move within the fixed part via the drive member, and the movable part, in turn, drives the folding step assembly to fold via the follower member.

Description

Technical Field

[0001] This invention relates to the field of vehicle accessory technology, and more particularly to a vehicle step, a driver's cab, and a work machine. Background Technology

[0002] Currently, drivers have increasingly higher requirements for the ergonomics and comfort of operating machinery. For large operating machinery, the large distance between the cab and the ground makes it difficult for drivers to get in and out, seriously affecting their user experience.

[0003] In related technologies, a step is usually installed below the entrance to the cab to facilitate the driver's entry into the cab. However, for rotary work machinery, installing a step can cause interference between the driver's entry and exit during the rotation process, affecting the normal operation of the work machinery. Summary of the Invention

[0004] This invention provides a boarding step to solve the defect in the prior art where the boarding step of the operating machinery interferes with the exit when the machine is rotating, and to achieve the effect of the boarding step automatically folding when the door is closed.

[0005] Therefore, the present invention provides a vehicle boarding step, comprising:

[0006] A folding pedal assembly, which is disposed below the entrance to the cab and is foldable or foldable in a first direction;

[0007] A first motion conversion assembly, comprising a drive member and a first guide assembly, wherein a fixed portion of the first guide assembly is connected to the cab, one end of the drive member is rotatably connected to the door, and the other end of the drive member is rotatably connected to a movable portion of the first guide assembly.

[0008] The second motion conversion assembly includes a follower and a second guide assembly. The second guide assembly is connected to the cab. One end of the follower is connected to the moving part, and the other end of the follower is connected to the folding pedal assembly through the second guide assembly.

[0009] When the car door is closed, the car door drives the moving part to move in the second direction via the drive member, and the moving part of the first guide assembly drives the folding pedal assembly to fold in the first direction via the follower member.

[0010] According to the vehicle entry step provided by the present invention, the folding step assembly includes:

[0011] At least two pedals, one of which is used for connection to the cab;

[0012] A folding mechanism is provided between each pair of adjacent pedals. The folding mechanism is used to drive the two adjacent pedals to move closer to each other or further apart along the first direction.

[0013] According to the vehicle step provided by the present invention, the folding mechanism includes a first link and a second link. The first link and the second link are arranged crosswise and are rotatably connected at the center position of the first link and the second link. The two ends of the first link and the second link are respectively rotatably connected to two adjacent pedals, and the first link and / or the second link are slidably connected to the pedals, with the sliding direction along the width direction of the pedals.

[0014] According to the boarding step provided by the present invention, the first guide assembly includes:

[0015] A fixing plate, which is used to connect to the cab, and the fixing plate is provided with a sliding groove;

[0016] A slider, which is slidably connected to the groove.

[0017] According to the vehicle step provided by the present invention, the driving component is a third link, one end of the third link is rotatably connected to the door at a position away from the hinge axis, and the other end of the third link is rotatably connected to the slider, and the rotation axis is parallel to the axis of the hinge axis of the door.

[0018] According to the vehicle entry pedal provided by the present invention, the second motion conversion assembly includes at least one pulley connected to the cab, the follower includes a cable, one end of the cable is connected to the slider, and the other end of the cable passes around the pulley and is connected to the lowermost pedal of the folding pedal assembly. When the vehicle door is closed, the slider drives the folding pedal assembly to fold through the cable.

[0019] According to the vehicle entry pedal provided by the present invention, an elastic element is further provided between two adjacent pedals. When the vehicle door is closed, the folding pedal assembly is folded, and the elastic element is compressed and stores force. When the vehicle door is opened, the elastic element restores its deformation and releases the elastic force, which drives the folding pedal assembly to unfold.

[0020] According to the vehicle step provided by the present invention, an elongated hole is provided at the position where the step connects to the first link and / or the second link.

[0021] The present invention also provides a vehicle boarding mechanism, including the boarding step as described above.

[0022] The present invention also provides a working machine, including the boarding pedal as described above or the boarding vehicle as described above.

[0023] The present invention provides a vehicle entry step, comprising a folding step assembly, a first motion conversion assembly, and a second motion conversion assembly. The folding step assembly is installed at the entrance of the driver's cab and can be unfolded or folded along a first direction. When unfolded, the folding step assembly allows the driver to enter the driver's cab; when folded, it prevents interference with exiting the vehicle during vehicle rotation. The first motion conversion assembly includes a drive member and a first guide assembly. The first guide assembly includes a fixed portion and a movable portion, with the movable portion movably connected to the fixed portion. The fixed portion is connected to the driver's cab, one end of the drive member is rotatably connected to the door, and the other end is connected to the movable portion. When the door is closed, the drive member can drive the movable portion of the first guide assembly to move along the direction defined by the fixed portion. The second motion conversion assembly includes a follower member and a second guide assembly. The second guide assembly is connected to the driver's cab, one end of the follower member is connected to the movable portion, and the other end of the follower member is connected to the folding step assembly after being reversed by the second guide assembly. The second guide assembly can convert the movement of the follower member into movement along the first direction. When the door is closed, the door can be driven by a drive component to move the moving part within the fixed part, converting the rotational motion of the door into motion along the direction defined by the fixed part. The moving part then drives a follower to move. Through the guiding action of the second guide assembly, the motion of the end of the follower connected to the folding pedal assembly is converted into motion along a first direction, thereby causing the follower to fold the folding pedal assembly. The entry pedal provided by this invention allows the driver to enter the cab. When the door is closed, the folding pedal assembly can be folded via the first and second motion conversion components, thus preventing interference between the folding pedal assembly and other components of the working machinery during operation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the vehicle door when it is closed and the folding pedal assembly is folded, as provided by the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of the vehicle door when it is open and the folding pedal assembly is unfolded, as provided by the present invention.

[0027] Figure 3 This is a schematic diagram of the structure of the vehicle step when folded, provided by the present invention;

[0028] Figure 4This is a schematic diagram of the structure of the vehicle boarding step when it is unfolded, provided by the present invention;

[0029] Figure 5 This is a schematic diagram of the folding pedal assembly provided by the present invention when folded.

[0030] Figure 6 This is a schematic diagram of the folding pedal assembly provided by the present invention when unfolded;

[0031] Figure label:

[0032] 100: Driver's cab; 200: Door; 310: Step; 311: Level plate; 312: Connecting plate; 3121: Oblong hole; 321: First connecting rod; 322: Second connecting rod; 410: Fixing plate; 411: Slide groove; 420: Slider; 430: Third connecting rod; 510: First pulley; 520: Second pulley; 530: Third pulley; 540: Cable; 600: Spring. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] In the description of the embodiments of the present invention, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] The following is combined Figures 1 to 6 The embodiments of the present invention will be described below. It should be understood that the following description is merely an illustrative embodiment of the present invention and does not constitute a limitation thereof.

[0038] An embodiment of the present invention provides a vehicle step, including a folding step assembly, a first motion conversion assembly, and a second motion conversion assembly.

[0039] A folding pedal assembly is used to be positioned below the entrance to the cab 100. The folding pedal assembly can be unfolded or folded in a first direction. For example, the top of the folding pedal assembly is connected below the entrance to the cab 100, and the folding pedal assembly can be unfolded downwards and folded upwards in a vertical direction.

[0040] The first motion conversion assembly includes a drive component and a first guide assembly. The first guide assembly includes a fixed part and a movable part, with the movable part movably connected to the fixed part. For example, the fixed part may be connected at the entrance of the cab 100, and the fixed part provides guidance for the movement of the movable part, enabling the movable part to move linearly along the front-rear direction of the cab 100.

[0041] One end of the drive component is rotatably connected to the door 200, and the other end is rotatably connected to the moving part. After connection, the drive component, door 200, moving part, and fixed part form a crank-slider mechanism. When the door 200 rotates, the door 200 drives the moving part to move relative to the fixed part through the drive component, converting the rotational motion of the door 200 into linear motion of the moving part along the front-rear direction of the cab 100.

[0042] The second motion conversion assembly includes a follower and a second guide assembly. The second guide assembly is connected to the cab 100. One end of the follower is connected to the moving part of the first guide assembly, and the other end of the follower is connected to the folding pedal assembly through the second guide assembly.

[0043] When the door 200 is closed, the door 200 drives the moving part of the first guide assembly to move in the second direction via the drive member, that is, to move in front of or behind the cab 100. When the moving part moves, the moving part drives the follower to move. The movement of the follower in the second direction is converted into an upward movement by the second guide assembly, and the follower folds the pedal assembly upward.

[0044] The vehicle entry step provided by this invention, when the vehicle door 200 is closed, is guided by the first and second guide components, and the rotational motion of the vehicle door 200 is converted into upward motion by the driving component and the follower component, thereby causing the folding step assembly to fold upward. This ensures that the driver can enter the cab 100 through the folding step assembly when the door 200 is open, and that the folding step assembly folds upward when the door 200 is closed, thus preventing interference between the folding step assembly and other parts of the working machinery during operation.

[0045] In some embodiments of the present invention, the folding pedal assembly includes a folding mechanism and at least two pedals 310.

[0046] For example, the pedal 310 may include four pedals, which are distributed vertically, with the uppermost pedal 310 being fixedly connected to the bottom of the entrance of the cab 100. Each pedal 310 includes a horizontal plate 311 and connecting plates 312 disposed on both sides of the horizontal plate 311, with the connecting plates 312 disposed on both sides of the horizontal plate 311 in the front-rear direction of the cab 100.

[0047] A folding mechanism can be installed on each side of the cab 100, between two adjacent pedals 310, in the front-rear direction. The folding mechanism can guide and drive the unfolding and folding of the pedals 310.

[0048] When the lowest pedal 310 is subjected to an upward pulling force, the pedal 310 moves upward. Since there is a folding mechanism between each pair of adjacent pedals 310, the three pedals 310 below move upward and fold simultaneously.

[0049] When the upward pull on the lowest pedal 310 disappears, the three pedals 310 below move downward and unfold under the action of gravity.

[0050] In a further embodiment, the folding mechanism can be a scissor lift assembly, including a first link 321 and a second link 322, which are arranged crosswise and hinged at the middle of the first link 321 and the second link 322.

[0051] The two ends of the first link 321 and the second link 322 are respectively hinged to the connecting plates 312 of the two adjacent pedals 310, with the hinge axis pointing along the front-rear direction of the cab 100. The end of the first link 321 can be slidably connected to the connecting plate 312 of the corresponding pedal 310, with the sliding direction along the left-right direction of the cab 100. Alternatively, the ends of both the first link 321 and the second link 322 can be slidably connected to the connecting plates 312 of the corresponding pedals 310, with the sliding direction along the left-right direction of the cab 100.

[0052] When two adjacent pedals 310 move toward each other or toward each other, the ends of the first link 321 and the second link 322 located on the same pedal 310 slide toward each other or toward each other.

[0053] In some embodiments of the present invention, two adjacent pedals 310 are used as examples for illustration. A scissor lift assembly consisting of a first link 321 and a second link 322 is provided between the connecting plates 312 of the two pedals 310.

[0054] For example, the top end of the first link 321 is hinged to the bottom end of the connecting plate 312 of the upper pedal 310, away from the cab 100, and the bottom end of the first link 321 is hinged to the top end of the connecting plate 312 of the lower pedal 310, near the cab 100. An elongated hole 3121 is provided at the connection point between the end of the first link 321 and the connecting plate 312, extending along the left-right direction of the cab 100. Thus, the end of the first link 321 can slide within the elongated hole 3121 along the left-right direction of the cab 100.

[0055] The top end of the second link 322 is hinged to the bottom end of the connecting plate 312 of the upper pedal 310 near the cab 100, and the bottom end of the second link 322 is hinged to the top end of the connecting plate 312 of the lower pedal 310 away from the cab 100.

[0056] Thus, the hinge points of the top of the first link 321 and the connecting plate 312, the top of the second link 322 and the connecting plate 312, and the hinge points of the first link 321 and the second link 322 form a triangular structure. Since the first link 321 is slidably connected to the connecting plate 312, when the top of the first link 321 slides against the connecting plate 312, the distance between the hinge points of the first link 321 and the second link 322 and the upper pedal 310 also changes. Similarly, the distance between the hinge points of the first link 321 and the second link 322 and the lower pedal 310 also changes, thus achieving the effect of adjacent pedals 310 moving closer or further apart.

[0057] Furthermore, the elongated hole 3121 can also limit the movement position of the first connecting rod 321. When the top of the first connecting rod 321 moves to the end of the elongated hole 3121 away from the cab 100, the top of the first connecting rod 321 reaches the first limit position and cannot move further. At this time, the lower pedal 310 folds upward to the limit position. When the top of the first connecting rod 321 moves to the end of the elongated hole 3121 close to the cab 100, the top of the first connecting rod 321 reaches the second limit position and cannot move further. At this time, the lower pedal 310 unfolds downward to the limit position.

[0058] The motion of the bottom end of the first link 321 is the same as that of the top end of the first link 321, and will not be described again here.

[0059] Of course, in other embodiments, an elongated hole 3121 can also be provided at the hinge position between the connecting plate 312 of the pedal 310 and the second connecting rod 322.

[0060] In some embodiments of the present invention, the first guide assembly includes a fixed plate 410 and a slider 420. The fixed plate 410 can be disposed at the top of the entrance of the cab 100 and can be connected to the cab 100 through a support plate so that there is a certain gap between the fixed plate 410 and the cab 100.

[0061] The fixing plate 410 can be a long strip structure, and the fixing plate 410 extends along the front-rear direction of the cab 100. A sliding groove 411 is provided on the fixing plate 410, extending along the length direction of the fixing plate 410. The slider 420 is disposed in the sliding groove 411 and is slidably connected to the sliding groove 411.

[0062] The driving component can be a third link 430. One end of the third link 430 is hinged to the door 200 away from the hinge axis between the door 200 and the cab 100, and the other end of the third link 430 is hinged to the top of the slider 420. The hinge axes are parallel to the axis of the hinge axis between the door 200 and the cab 100.

[0063] Thus, the door 200, the third link 430, the slider 420 and the slide groove 411 form a crank-slider mechanism. When the door 200 rotates, the third link 430 can drive the slider 420 to move linearly in the slide groove 411, thereby converting the rotational motion of the door 200 into the linear motion of the slider 420.

[0064] In some embodiments of the present invention, the second motion conversion assembly may include three pulleys, namely a first pulley 510, a second pulley 520, and a third pulley 530. The first pulley 510 may be disposed between the fixed plate 410 and the cab 100, and located at one end of the slide groove 411 near the hinge axis between the door 200 and the cab 100. The second pulley 520 may be disposed at the bottom of the cab 100, and located below the first pulley 510. The third pulley 530 may be disposed at the bottom of the cab 100, and located below the middle position of the slide groove 411. The rotation axes of the above three pulleys may all be along the left-right direction of the cab 100.

[0065] The follower can be a pull cable 540, one end of which is connected to the bottom of the slider 420. The other end of the pull cable 540 passes over the top and rear of the first pulley 510, and then continues to wind downwards, passing over the rear and bottom of the second pulley 520, and then continues to wind forwards, passing over the top and front of the third pulley 530, and then continues to extend downwards until it is connected to the bottom pedal 310 of the folding pedal assembly.

[0066] Thus, when the door 200 is closed, the third link 430 drives the slider 420 to move forward along the slide groove 411, or rather, to move away from the hinge axis between the door 200 and the cab 100. During the movement of the slider 420, the part connecting the pull cable 540 and the pedal 310 moves upward, which in turn moves the lowest pedal 310 upward. Under the action of the folding mechanism, multiple pedals 310 move upward, achieving the effect of folding the pedals 310.

[0067] When the door 200 is opened, the third link 430 drives the slider 420 to move backward along the slide groove 411, or rather, to move towards the hinge axis between the door 200 and the cab 100. During the movement of the slider 420, the tension of the cable 540 on the lowest pedal 310 disappears, and the multiple pedals 310 can move downward and unfold under the action of gravity.

[0068] In some embodiments of the present invention, an elastic element, such as a spring 600, may be provided between two adjacent pedals 310. When the folding pedal assembly is in the unfolded position, the spring 600 may be in its original length or slightly compressed state. When the door 200 closes and causes the folding pedal assembly to fold, the spring 600 located between the pedals 310 is compressed and stores force. When the door 200 is opened again, the tension of the cable 540 on the pedals 310 disappears, the spring 600 returns to its original deformation and releases its elastic force, pushing the pedals 310 downward to unfold.

[0069] Embodiments of the present invention also provide a vehicle equipped with a driver's cab 100, which is fitted with the boarding steps described above, and thus has the same advantages as described above.

[0070] Embodiments of the present invention also provide a working machine, which can be a tracked excavator, a tracked crane, or other rotary working machine with a loading and unloading mechanism. Because it is equipped with the loading step as described above, it has the same advantages as described above.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A step for getting on a vehicle, characterized in that, include: A folding pedal assembly is provided below the entrance to the cab (100) and is foldable or foldable in a first direction. The first motion conversion assembly includes a drive component and a first guide component. The fixed part of the first guide component is connected to the cab (100). One end of the drive component is rotatably connected to the door (200), and the other end of the drive component is rotatably connected to the moving part of the first guide component. The first guide component includes a fixed plate (410) with a groove (411) and a slider (420) slidably connected to the groove (411). The drive component is a third link (430). One end of the third link (430) is rotatably connected to the door (200) away from the hinge axis, and the other end of the third link (430) is rotatably connected to the slider (420). The rotation axes are all parallel to the axis of the hinge axis of the door (200). The second motion conversion assembly includes a follower and a second guide assembly. The second guide assembly is connected to the cab (100). One end of the follower is connected to the moving part, and the other end of the follower is connected to the folding pedal assembly through the second guide assembly. The second motion conversion assembly includes at least one pulley connected to the cab (100). The follower includes a cable (540). One end of the cable (540) is connected to the slider (420), and the other end of the cable (540) passes around the pulley and is connected to the lowermost pedal (310) of the folding pedal assembly. When the door (200) is closed, the door (200) drives the moving part to move in the second direction through the drive member, and the moving part of the first guide assembly drives the folding pedal assembly to fold in the first direction through the follower member.

2. The boarding step according to claim 1, characterized in that, The folding pedal assembly includes: At least two pedals (310), one of which is used to connect to the cab (100); A folding mechanism is provided between each pair of adjacent pedals (310), and the folding mechanism is used to drive the two adjacent pedals (310) to move closer to each other or further away from each other along the first direction.

3. The boarding step according to claim 2, characterized in that, The folding mechanism includes a first link (321) and a second link (322). The first link (321) and the second link (322) are arranged crosswise and are rotatably connected at the center position of the first link (321) and the second link (322). The two ends of the first link (321) and the second link (322) are respectively rotatably connected to two adjacent pedals (310). The first link (321) and / or the second link (322) are slidably connected to the pedals (310) in the direction of sliding along the width direction of the pedals (310).

4. The boarding step according to claim 2 or 3, characterized in that, The mounting plate (410) is used to connect to the cab (100).

5. The boarding step according to claim 1, characterized in that, When the door (200) is closed, the slider (420) drives the folding pedal assembly to fold via the pull cable (540).

6. The boarding step according to claim 2, characterized in that, An elastic element is also provided between two adjacent pedals (310). When the door (200) is closed, the folding pedal assembly is folded and the elastic element is compressed and stores force. When the door (200) is opened, the elastic element restores its deformation and releases the elastic force, which drives the folding pedal assembly to unfold.

7. The boarding step according to claim 3, characterized in that, An elongated hole (3121) is provided at the position where the pedal (310) connects to the first connecting rod (321) and / or the second connecting rod (322).

8. A method of boarding, characterized in that, Includes the boarding pedal as described in any one of claims 1 to 7.

9. A type of operating machinery, characterized in that, This includes the boarding pedal as described in any one of claims 1 to 7 or the boarding as described in claim 8.

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