Trolley suitable for stairs

Abstract

The trolley suitable for the stairs comprises a bottom plate, moving wheels, ladder stand mechanisms, a bearing mechanism and a pushing handle, a plurality of moving wheels are rotationally installed on the lower side face of the bottom plate, and the ladder stand mechanisms are fixed to the outer side faces of wheel bodies of the moving wheels; a controller and a power source are fixed to the lower side face of the bottom plate. A bearing mechanism is fixed to the upper side face of the bottom plate, and a pushing handle is fixed to the upper side face of one end of the bottom plate. Due to the arrangement of the crawling ladder mechanism and the bearing mechanism, when the goods shelf is used, the goods shelf can be flexibly switched between a flat ground environment and a stair environment, and goods can be stably placed on the supporting plate and can be kept balanced even in an inclined environment.

Description

Technical Field

[0001] The utility model belongs to the technical field of material handling, and particularly relates to a trolley applicable to stairs. Background Art

[0002] A trolley is a vehicle for handling materials. Due to its low cost, convenient operation, light self-weight and other advantages, it is widely used in short-distance material handling and can handle materials over short distances in places where motor vehicles cannot be used.

[0003] However, traditional trolleys are often limited to flat ground use in terms of design and function, and are inadequate for complex terrains such as stairs. When users need to carry goods up and down stairs, traditional trolleys often fail to provide effective support, resulting in not only low handling efficiency, but also possible damage to goods or injury to personnel.

[0004] Therefore, it is very necessary to invent a trolley applicable to stairs. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a trolley applicable to stairs to solve the problems mentioned in the background art.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model is a trolley applicable to stairs, which includes a bottom plate, moving wheels, a ladder climbing mechanism, a carrying mechanism and a pusher. A plurality of moving wheels are rotatably installed on the lower side of the bottom plate through support bearings, and ladder climbing mechanisms are fixed to the outer sides of the wheel bodies of the moving wheels through bolts; a controller and a power supply are respectively fixed to the lower side of the bottom plate through bolts; a carrying mechanism is fixed to the upper side of the bottom plate, and a pusher is fixed to the upper side of one end of the bottom plate through bolts.

[0008] Further, the ladder climbing mechanism includes a fixed frame, electric push rods and sliders. The fixed frame is fixed to the outer side of the wheel body of the moving wheel through bolts, and two electric push rods are symmetrically fixed inside the fixed frame through bolts; the output ends of the electric push rods are all fixed with sliders, and the sliders are slidably connected to the fixed frame. Such a setting enables the device to have the function of climbing stairs.

[0009] Further, the carrying mechanism includes a pallet, a rocker, a moving block, and a cylinder. The pallet is provided on the upper side of the bottom plate, and one end of the pallet close to the pusher is rotatably connected to the bottom plate through a support bearing; on both sides of the other end of the pallet, rockers are rotatably installed through support bearings, and the other end of the rocker is rotatably connected to the moving block through a support bearing; the moving block is slidably installed on the upper side of the bottom plate, and one side of the moving block is fixed to the output end of the cylinder by bolts; the cylinder is fixed to the upper side of the bottom plate by bolts. Such a setting can prevent the goods from slipping.

[0010] Further, a gyroscope sensor is fixed to the outer side of the bottom plate by bolts. With such a setting, the gyroscope sensor can detect the angle between the bottom plate and the horizontal plane, thereby providing a basis for the action of the carrying mechanism.

[0011] Further, the pusher includes a limit block, a stud, a sleeve, and a bent pipe. The limit block is fixed to the upper side of the bottom plate by bolts, and the shape of the limit block is a polyhedron; two studs are respectively fixed to two sides of the upper end of the limit block by welding; sleeves are respectively rotatably installed at both ends of the bent pipe, and the sleeves are respectively fixed to the corresponding studs by thread engagement. With such a setting, connecting the bent pipe to different studs through the sleeves can facilitate the staff to pull the device in different scenarios.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The setting of the ladder climbing mechanism of the utility model can be flexibly switched between two environments of flat ground and stairs. On flat ground, the slider can contract to avoid contact with the ground, ensuring the smooth movement of the trolley. When climbing stairs, the slider extends to contact the edges of the stairs. With the pulling force of the staff, the slider will lift the moving wheels, realizing the climbing of the trolley on the stairs. Secondly, when the user is exhausted or needs to stop, the trolley moves backward, and the slider will contact the upper side of the stair step, thereby preventing the moving wheels from rotating in the reverse direction and realizing braking to ensure the use safety.

[0014] 2. The setting of the carrying mechanism of the utility model, when there is an angle between the bottom plate and the horizontal plane (such as when climbing stairs), the cooperation of the cylinder, the moving block, and the rocker can drive the pallet to rotate correspondingly on the bottom plate, making the pallet always parallel to the ground. This adjustment function effectively prevents the goods from slipping on the pallet and ensures the safe transportation of the goods. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 is a schematic structural diagram of the present utility model.

[0017] Figure 2 is a schematic structural diagram of the ladder climbing mechanism of the present utility model.

[0018] Figure 3 is a schematic structural diagram of the bearing mechanism of the present utility model.

[0019] Figure 4 is a schematic structural diagram of the pusher of the present utility model.

[0020] Figure 5 is a schematic structural diagram of the present utility model when climbing stairs.

[0021] In the figure:

[0022] 1 - bottom plate, 2 - moving wheel, 3 - ladder climbing mechanism, 31 - fixed frame, 32 - electric push rod, 33 - slider, 4 - gyroscope sensor, 5 - bearing mechanism, 51 - support plate, 52 - rocker, 53 - moving block, 54 - cylinder, 6 - pusher, 61 - limit block, 62 - stud, 63 - sleeve, 64 - elbow pipe. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0024] In the description of the present utility model, it should be understood that the terms "upper", "middle", "outer", "inner", "around", etc. indicating the orientation or position relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0025] Please refer to Figures 1 to 5As shown in the figure, the utility model is a trolley applicable to stairs, including a bottom plate 1, moving wheels 2, a ladder climbing mechanism 3, a bearing mechanism 5 and a pusher 6. A plurality of moving wheels 2 are rotatably installed on the lower side of the bottom plate 1 through support bearings, and a ladder climbing mechanism 3 is fixedly installed on the outer side of the wheel body of each moving wheel 2 through bolts; a controller and a power supply are fixedly installed on the lower side of the bottom plate 1 through bolts; a bearing mechanism 5 is fixedly installed on the upper side of the bottom plate 1, and a pusher 6 is fixedly installed on the upper side of one end of the bottom plate 1 through bolts.

[0026] Specifically, the ladder climbing mechanism 3 includes a fixed frame 31, an electric push rod 32 and a slider 33. The fixed frame 31 is fixedly installed on the outer side of the wheel body of the moving wheel 2 through bolts, and two electric push rods 32 are symmetrically and fixedly installed inside the fixed frame 31 through bolts; the output ends of the electric push rods 32 are fixedly installed with sliders 33, and the sliders 33 are slidably connected to the fixed frame 31. When used on flat ground, the electric push rod 32 can drive the slider 33 to contract, so that the slider 33 does not contact the ground. When climbing stairs is required, the electric push rod 32 can drive the slider 33 to extend on the wheel body of the moving wheel 2. When the staff pulls the device upward, the wheel body of the moving wheel 2 will rotate accordingly, and then the corresponding slider 33 can contact the corresponding edge of the stairs. As the staff continues to exert force, the slider 33 can lift the moving wheel 2 until it contacts the next step of the stairs. By repeating the above actions, the device can climb the stairs. At the same time, when the user is exhausted and the device moves backward, as the wheel body of the moving wheel 2 rotates in the reverse direction, the corresponding slider 33 can contact the upper side of the stairs, thereby preventing the moving wheel 2 from continuing to rotate in the reverse direction for braking.

[0027] Specifically, the bearing mechanism 5 includes a tray 51, a rocker 52, a moving block 53 and a cylinder 54. The tray 51 is arranged on the upper side of the bottom plate 1, and one end of the tray 51 close to the pusher 6 is rotatably connected to the bottom plate 1 through a support bearing; the other ends of both sides of the tray 51 are rotatably installed with rockers 52 through support bearings, and the other ends of the rockers 52 are rotatably connected to the moving block 53 through support bearings; the moving block 53 is slidably installed on the upper side of the bottom plate 1, and one side of the moving block 53 is fixedly connected to the output end of the cylinder 54 through bolts; the cylinder 54 is fixedly installed on the upper side of the bottom plate 1 through bolts. When in use, goods can be placed on the tray 51. When the gyroscope sensor 4 detects an angle between the bottom plate 1 and the ground, such as when climbing stairs, through the cooperation of the cylinder 54, the moving block 53 and the rocker 52, the tray 51 is driven to rotate correspondingly on the bottom plate 1, so that the tray 51 is always parallel to the ground, thereby preventing the goods from slipping on the tray 51.

[0028] Specifically, a gyroscope sensor 4 is fixed to the outer side surface of the bottom plate 1 by bolts. During use, the gyroscope sensor 4 can detect the angle between the bottom plate 1 and the horizontal plane, thereby providing a basis for the operation of the carrying mechanism 5.

[0029] Specifically, the pusher 6 includes a limit block 61, a stud 62, a sleeve 63, and a bent pipe 64. The limit block 61 is fixed to the upper side surface of the bottom plate 1 by bolts, and the shape of the limit block 61 is a polyhedron; two studs 62 are respectively fixed to two side surfaces at the upper end of the limit block 61 by welding; sleeves 63 are rotatably installed at both ends of the bent pipe 64, and the sleeves 63 are respectively fixed to the corresponding studs 62 by thread engagement. When used on the ground, the bent pipe 64 can be fixed to the two studs 62 directly above the limit block 61 through the sleeves 63. When it is necessary to climb stairs, the bent pipe 64 can be fixed to the other two studs 62 of the limit block 61 through the sleeves 63, so that the extending direction of the bent pipe 64 can adapt to the stairs, thereby facilitating the user to pull the device upward through the bent pipe 64.

[0030] Please refer to Figures 1-5 As shown, the present utility model is a trolley applicable to stairs, and its working principle is as follows: During use, the goods to be transported can be placed on the pallet 51, and then the device is moved through the pusher 6. Among them, when used on the ground, the ladder climbing mechanism 3 can contract to avoid contacting the ground and ensure the smooth movement of the trolley. When it is necessary to climb stairs, the ladder climbing mechanism 3 can be extended out of the moving wheel 2, so as to assist the device to climb the stairs through the ladder climbing mechanism 3. In addition, during use, through the cooperation of the gyroscope sensor 4 and the carrying mechanism 5, the goods can be prevented from slipping on the device.

[0031] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A trolley suitable for stairs, comprising a base plate (1), moving wheels (2), a ladder climbing mechanism (3), a bearing mechanism (5) and a handle (6), characterized in that: A plurality of moving wheels (2) are rotatably mounted on the lower side of the base plate (1), wherein the outer side surfaces of the moving wheels (2) are all fixed with ladder mechanisms (3); a controller and a power supply are respectively fixed to the lower side of the base plate (1); a bearing mechanism (5) is fixed to the upper side of the base plate (1), and a push handle (6) is fixed to the upper side of one end of the base plate (1).

2. A trolley suitable for stairs as claimed in claim 1, characterized in that: The ladder climbing mechanism (3) comprises a fixed frame (31), an electric push rod (32) and a sliding block (33); the fixed frame (31) is fixed to the outer side of the wheel body of the moving wheel (2), and two electric push rods (32) are symmetrically fixed inside the fixed frame (31); the output ends of the electric push rods (32) are fixed with sliding blocks (33), wherein the sliding blocks (33) are slidably connected to the fixed frame (31).

3. A trolley suitable for stairs as claimed in claim 1, characterized in that: The bearing mechanism (5) comprises a support plate (51), a rocker (52), a moving block (53) and a cylinder (54); the support plate (51) is provided with an upper side surface of the base plate (1), and one end of the support plate (51) close to the push handle (6) is rotatably connected to the base plate (1); rockers (52) are rotatably mounted on both side surfaces of the other end of the support plate (51), wherein the other end of the rocker (52) is rotatably connected to the moving block (53); the moving block (53) is slidably mounted on the upper side surface of the base plate (1), and one side surface of the moving block (53) is fixed to the output end of the cylinder (54); and the cylinder (54) is fixed to the upper side surface of the base plate (1).

4. A trolley suitable for stairs as claimed in claim 1, characterized in that: A gyro sensor (4) is fixed to the outer side surface of the bottom plate (1).

5. A trolley suitable for stairs as claimed in claim 1, characterized in that: The push handle (6) comprises a limit block (61), a stud (62), a sleeve (63) and a bent pipe (64); the limit block (61) is fixed to the upper side of the base plate (1), and the limit block (61) is in the shape of a polyhedron; two studs (62) are respectively fixed to the two side surfaces of the upper end of the limit block (61); sleeves (63) are rotatably mounted at both ends of the bent pipe (64), wherein the sleeves (63) are respectively fixed to the corresponding studs (62) by threaded engagement.

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