Transportation device capable of crossing steps

Abstract

The invention provides a step-spanning transportation device which comprises a top plate and a bottom plate, and a linear adjusting rod is arranged between the top plate and the bottom plate; a self-adaptive clamping mechanism is arranged at the top end of the top plate, two rows of wheel sets are arranged at the bottom end of the bottom plate, each wheel set comprises at least two walking wheels, a synchronous transmission belt is arranged between every two adjacent walking wheels in a sleeving mode, and the two corresponding walking wheels are connected between the two wheel sets through a synchronous shaft; a foldable supporting mechanism is arranged on the peripheral side of the synchronizing shaft and comprises an arc-shaped guide rail and a supporting block, the arc-shaped guide rail is slidably connected to the peripheral side of the synchronizing shaft, the supporting block is fixedly connected to the arc-shaped guide rail, and when the arc-shaped guide rail pushes the supporting block to move towards the periphery of the walking wheel, the side edge working face of the supporting block makes surface contact with the step; an expandable stable bracket is arranged at the end part of the synchronizing shaft; the expandable stable bracket comprises multiple stages of folding connecting rods and electric push rods arranged between the adjacent folding connecting rods; the method has the effect of improving the step crossing flexibility of the transportation tool.

Description

Technical Field

[0001] The invention relates to the technical field of transportation tools, and in particular to a step-spanning transportation device. Background Art

[0002] At present, in the construction process of construction projects, it is often necessary to transport large equipment, building materials and heavy construction machinery accessories between work surfaces at different elevations. Traditional solutions mainly rely on lifting machinery for lifting and transportation, but due to narrow working space, complex terrain or temporary construction needs, cranes are often unable to be deployed due to site restrictions, resulting in low transportation efficiency or even stagnation, and there is a problem of insufficient flexibility of transportation tools to cross steps. Summary of the invention

[0003] The purpose of the present invention is to provide a step-crossing transport device to solve the problem of insufficient flexibility of transport tools crossing steps.

[0004] In order to achieve the above-mentioned purpose, a step-crossing transport device of the present invention adopts the following technical solutions:

[0005] A step-spanning transport device comprises a top plate and a bottom plate, wherein a linear adjustment rod is arranged between the top plate and the bottom plate;

[0006] The top surface of the top plate is provided with an adaptive clamping mechanism, and the bottom surface of the bottom plate is provided with two rows of wheel groups, each row of the wheel groups includes at least two running wheels, a synchronous transmission belt is sleeved between two adjacent running wheels, and the two wheel groups are connected to the corresponding two running wheels via a synchronous shaft;

[0007] A foldable support mechanism is provided on the peripheral side of the synchronous shaft, and the foldable support mechanism includes an arc-shaped guide rail and a support block. The arc-shaped guide rail is slidably connected to the peripheral side of the synchronous shaft, and the support block is fixedly connected to the end of the arc-shaped guide rail. When the arc-shaped guide rail pushes the support block to move toward the periphery of the walking wheel, the side working surface of the support block forms a surface contact with the edge of the step.

[0008] An expandable stabilizing bracket is arranged at the end of the synchronization shaft. The expandable stabilizing bracket comprises a multi-stage folding connecting rod and an electric push rod arranged between adjacent folding connecting rods.

[0009] As an optimization of a transport device that crosses steps, the adaptive clamping mechanism includes a base, a sleeve and a limit block. The base is rotatably connected to the top plate, the sleeve is fixedly connected to one side of the circumference of the base, the limit block is L-shaped, one end of the limit block is slidably connected to the sleeve, and the other end of the limit block is provided with a pressure sensor.

[0010] As an optimization of the transport device across steps, the foldable support mechanism also includes a fixed rod and a telescopic cylinder, the fixed rod extends radially along the synchronous axis, the arc guide rail passes through and slides on the fixed rod, one end of the telescopic cylinder is hinged to the side of the fixed rod, and the other end of the telescopic cylinder is hinged to the end of the arc guide rail.

[0011] As an optimization of the transport device across steps, the deployable stabilizing bracket further includes a supporting foot pad, and the supporting foot pad is ball-hinged to the bottom of the folding connecting rod at the lowest end.

[0012] As an optimization of the transport device across steps, a linear adjustment rod is provided at each of the four corners of the bottom plate, a ball joint is provided at the top end of each linear adjustment rod, and the four corners of the top plate are respectively sleeved on the four ball joints.

[0013] As an optimization of the step-crossing transport device, an inclination sensor is arranged on the top plate, and the inclination sensor signal is connected to the linear adjustment rod.

[0014] As an optimization of the step-spanning transport device, the cross-sectional shape of the support block is a right-angled triangle, and the right-angled vertices of the support block are provided with wear-resistant pads.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the distance between the top plate and the bottom plate can be adjusted through the linear adjustment rod, so that the top plate is always in a horizontal state, and the object can be fixed on the top plate through the adaptive clamping mechanism; the bottom plate can be smoothly transported on a flat ground by relying on multiple walking wheels through the wheel group, and then the support block is folded to the outer periphery of the walking wheel along the motion trajectory of the arc guide rail through the foldable support structure, and the support block contacts the step surface. At the same time, under the rotation of the synchronous shaft, multiple support blocks are alternately supported on different steps to achieve ladder climbing, thereby improving the flexibility of the transport tool crossing the steps; the ladder climbing of the walking wheel is assisted by the deployable stabilizing bracket, and the multi-stage folding connecting rod can lift one end of the transport device, which is convenient for the support block to contact with steps of different heights, further improving the flexibility of the transport tool crossing the steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is a schematic diagram of the overall structure of a step-crossing transport device according to an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of a ladder climbing process of a step-crossing transport device according to an embodiment of the present application;

[0019] Figure 3 It is a schematic diagram of the overall structure of the foldable support mechanism according to an embodiment of the present application.

[0020] In the figure: 1. top plate; 2. bottom plate; 21. adaptation rod; 3. adaptive clamping mechanism; 31. base; 32. sleeve; 33. limit block; 34. pressure sensor; 4. linear adjustment rod; 41. ball joint; 5. wheel set; 51. walking wheel; 52. synchronous transmission belt; 53. synchronous shaft; 6. foldable support mechanism; 61. arc guide rail; 62. support block; 63. fixing rod; 64. telescopic cylinder; 7. expandable stabilizing bracket; 71. folding connecting rod; 72. electric push rod; 73. supporting foot pad; 8. inclination sensor. DETAILED DESCRIPTION

[0021] To make the technical solutions and advantages of the present invention more clear, the present invention and its beneficial effects will be described in further detail below in conjunction with specific implementation methods and accompanying drawings, but the implementation methods of the present invention are not limited thereto.

[0022] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0024] The following is combined with Figure 1-3 , further details of this application are given.

[0025] The present application provides a step-crossing transport device, which adopts the following technical solution:

[0026] Reference Figure 1 and Figure 2The transport device includes a top plate 1 and a bottom plate 2. The top plate 1 carries the transported object. A linear adjustment rod 4 is installed between the top plate 1 and the bottom plate 2. In this embodiment, the linear adjustment rod 4 is a cylinder. A main board is installed on the top plate 1. The main board is equipped with a single-chip microcomputer. The main board is connected to the servo drive controller of the linear adjustment rod 4 by signal. The lifting and lowering of the linear adjustment rod 4 can be controlled by the main board. Specifically, a linear adjustment rod 4 is installed at each of the four corners of the bottom plate 2. Each linear adjustment rod 4 can be lifted and lowered independently. Furthermore, a ball joint 41 is integrally formed at the top of each linear adjustment rod 4. The four corners of the top plate 1 are provided with corresponding mounting holes. The top plate 1 is sleeved on the ball joint 41 through the mounting holes, so that the linear adjustment rod 4 can adjust the top plate 1 to any angle relative to the bottom plate 2, which is conducive to keeping the top plate 1 level. Furthermore, an inclination sensor 8 is installed on the top plate 1, and the inclination sensor 8 forms a closed-loop control signal connection with the linear adjustment rod 4 through the main board, and adjusts the horizontality of the top plate 1 through real-time feedback, so that the top plate 1 is always in a horizontal position during the movement, thereby improving the stability of transportation.

[0027] Reference Figure 1 and Figure 2 , an adaptive clamping mechanism 3 is installed on the top surface of the top plate 1 for clamping the object to be transported. Furthermore, the adaptive clamping mechanism 3 includes a base 31, a sleeve 32 and a limit stopper 33. The base 31 is circular and rotatably installed on the top surface of the top plate 1. It is rotated or locked by a motor drive, and can adjust the direction of the clamped object, which is beneficial to improve the stability of the clamping. The sleeve 32 is in the shape of a hollow rectangular parallelepiped, and the sleeve 32 extends from the circular shape of the base 31 in two opposite directions. The limit stopper 33 is L-shaped, and one end of the limit stopper 33 is inserted into the sleeve 32 for sliding. The sliding of the limit stopper 33 relative to the sleeve 32 is controlled by the cylinder drive. The other end of the limit stopper 33 extends vertically upward, and a pressure sensor 34 is installed at the end, and the pressure sensor 34 is connected to the main board signal. When the limit blocks 33 on both sides of the base 31 approach each other, the limit blocks 33 clamp the object to be transported, and the pressure sensor 34 transmits the pressure data to the main board until the limit blocks 33 clamp the object. The limit blocks 33 are locked relative to the movement of the sleeve 32, thereby achieving the clamping of materials of different sizes.

[0028] Reference Figure 1 and Figure 2, two rows of wheel groups 5 are installed side by side on the bottom surface of the base plate 2, each row of wheel groups 5 includes at least two running wheels 51. In this embodiment, one row of wheel groups 5 includes three running wheels 51. The base 2 and the running wheels 51 are correspondingly connected through an adaptation rod 21. The adaptation rod 21 can be a cylinder. According to the change of the terrain, each adaptation rod 21 drives the corresponding running wheel 51 to abut against the ground, so that during the movement, each running wheel 51 can maintain contact with the terrain, thereby improving the overall stability of the transportation device. A synchronous transmission belt 52 is commonly provided between two adjacent running wheels 51, and the synchronous transmission belt 52 is used to realize motion coupling of multiple running wheels 51. Furthermore, between the two rows of wheel groups 5, the running wheels 51 are paired one by one, and a synchronous shaft 53 is installed between the corresponding two running wheels 51, and the running wheels 51 on both sides are synchronously moved through the synchronous shaft 53.

[0029] Reference Figure 1 , Figure 2 and Figure 3 A plurality of foldable support mechanisms 6 are installed on the circumference of the synchronous shaft 53. Each foldable support mechanism 6 includes an arc-shaped guide rail 61 and a support block 62. The arc-shaped guide rail 61 is slidably installed on the circumference of the synchronous shaft 53. The motion trajectory of the arc-shaped guide rail 61 extends from the inside of the running wheel 51 to the periphery of the running wheel 51. The support block 62 is fixedly welded to the end of the guide rail. The support block 62 is pushed to the outer peripheral surface of the running wheel 51 by the sliding of the arc-shaped guide rail 61. When the arc-shaped guide rail 61 pushes the support block 62 to the outer peripheral surface of the running wheel 51, the support block 62 forms a protrusion on the circumference of the running wheel 51. The side working surface of the support block 62 contacts the step surface. Another support block 62 contacts the next step under the rotation of the synchronous shaft 53, and the synchronous transmission belt 52 is lifted up to a certain angle. In the process of the synchronous transmission belt 52 moving, the device moves on the step through the reciprocating and alternating support of the plurality of support blocks 62 and the step, thereby improving the flexibility of the transport device crossing the step. Furthermore, the cross-sectional shape of the support block 62 is a right triangle, and the two right-angled sides of the support block 62 serve as working surfaces in contact with the edge of the step, which can increase the stability of the support block 62. At the same time, the right-angled vertex of the support block 62 is installed with a wear-resistant pad, which can increase the friction between the side working surface of the support block 62 and the step, thereby improving the stability of the step on the transport device.

[0030] Further, refer to Figure 1 and Figure 3The foldable support mechanism 6 further includes a fixed rod 63 and a telescopic cylinder 64. The fixed rod 63 extends outward along the radial direction of the synchronous shaft 53, one end of the telescopic cylinder 64 is hinged to one side of the fixed rod 63, and the other end of the telescopic cylinder 64 is hinged to one end of the arc guide rail 61. The arc guide rail 61 is inserted from one side to the other side of the fixed rod 63. The sliding position of the arc guide rail 61 changes with the length of the telescopic cylinder 64. The telescopic cylinder 64 controls the arc cylinder to stay at different positions, so that the support block 62 has different angles, thereby meeting the step-crossing requirements of different construction environments, which is conducive to improving the flexibility of the transportation tool.

[0031] Reference Figure 1 and Figure 2 , the end of the synchronous shaft 53 passes through the running wheel 51 and extends outward, and the end of the synchronous shaft 53 is installed with a deployable stable bracket 7. The deployable stable bracket 7 includes a multi-stage folding link 71 and an electric push rod 72. The multi-stage folding link 71 is sequentially connected from the end of the synchronous shaft 53, and the electric push rod 72 is installed between two adjacent folding links 71. By changing the length of the electric push rod 72, the folding state between the multi-stage folding links 71 can be changed. Specifically, when the electric push rod 72 is fully extended, the multi-stage folding link 71 is fully unfolded into a vertical straight line, and the running wheel 51 is independently lifted and suspended in the air, so that one side of the transport device is tilted at a certain angle, which is convenient for the support block 62 to align with the step; when the electric push rod 72 is not fully unfolded, the electric push rod 72 forms a triangular stable structure between the two folding links 71, so that a fixed support height is formed between the multi-stage folding links 71, and the transport device is adjusted to a suitable inclination angle to adapt to the support requirements of different terrains and inclination angles, thereby improving the flexibility of the transport device.

[0032] Further, refer to Figure 1 and Figure 3 The deployable stable bracket 7 also includes a supporting foot pad 73. One side of the supporting foot pad 73 is ball-hinged to the bottom of the folding link 71 at the bottom end. A rectangular rubber pad is installed on the other side of the supporting foot pad 73. The rectangular rubber pad is vertically downward toward the ground under its own weight, so that when any shape of the folding link 71 contacts the ground, the supporting foot pad 73 can always be in positive contact with the ground, thereby improving the supporting stability of the folding link 71.

[0033] The experimental principle of the embodiment of the present application is as follows: when an object needs to be transported across the steps, the object is placed on the top plate 1, the adaptive clamping mechanism 3 selects the clamping direction according to the length or width of the object, the base 31 rotates so that the sleeve 32 is located in the clamping direction, and the limit block 33 is close to each other along the sleeve 32 to clamp the object; under the feedback adjustment action of the inclination sensor 8 of the top plate 1, the linear adjustment rod 4 constantly adjusts the position and inclination of the top plate 1 relative to the bottom plate 2, so that the top plate 1 is always in a horizontal state, which is conducive to improving the stability of object transportation; at the bottom end of the bottom plate 2, the ladder climbing action is performed through the foldable support mechanism 6, and the telescopic cylinder 64 drives The arc guide rail 61 pushes the support block 62 to fold toward the outer periphery of the walking wheel 51, forming a bulge on the outer periphery of the walking wheel 51, and the side working surface of the support block 62 contacts and abuts against the step. Under the driving action of the synchronous transmission belt 52, the transport device moves forward and upward at the same time, and multiple support blocks 62 alternate on different steps to form a step-up action; and then the deployable stable bracket 7 is used for assistance to improve the stability of the contact between the walking wheel 51 and the step. At the same time, when the lifting angle is required to be large, the multi-stage folding connecting rod 71 can also make one end of the transport device tilt up, which is convenient for the support block 62 to overlap with the step and improve the flexibility of transporting across the step. Through the above device, the object can adapt to different terrains, complete the action of transporting the object onto the step, and keep the object stable at the same time, thereby improving the flexibility of the transport tool crossing the step, which is conducive to improving construction efficiency.

[0034] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs can also change and modify the above embodiment. Therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by those skilled in the art on the basis of the present invention belongs to the protection scope of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A step-crossing transport device, characterized in that: It comprises a top plate (1) and a bottom plate (2), wherein a linear adjustment rod (4) is arranged between the top plate (1) and the bottom plate (2); The top surface of the top plate (1) is provided with an adaptive clamping mechanism (3), and the bottom surface of the bottom plate (2) is provided with two rows of wheel groups (5), each row of the wheel groups (5) includes at least two running wheels (51), a synchronous transmission belt (52) is sleeved between two adjacent running wheels (51), and two corresponding running wheels (51) are connected between the two wheel groups (5) via a synchronous shaft (53); A foldable support mechanism (6) is provided on the peripheral side of the synchronization shaft (53), and the foldable support mechanism (6) comprises an arc-shaped guide rail (61) and a support block (62), wherein the arc-shaped guide rail (61) is slidably connected to the peripheral side of the synchronization shaft (53), and the support block (62) is fixedly connected to the end of the arc-shaped guide rail (61), and when the arc-shaped guide rail (61) pushes the support block (62) to move toward the periphery of the walking wheel (51), the side working surface of the support block (62) forms a surface contact with the edge of the step; An expandable stabilizing bracket (7) is provided at the end of the synchronization shaft (53), and the expandable stabilizing bracket (7) comprises a multi-stage folding connecting rod (71) and an electric push rod (72) provided between adjacent folding connecting rods (71).

2. A step-crossing transport device according to claim 1, characterized in that: The adaptive clamping mechanism (3) comprises a base (31), a sleeve (32) and a limit stopper (33); the base (31) is rotatably connected to the top plate (1); the sleeve (32) is fixedly connected to one side of the circumference of the base (31); the limit stopper (33) is L-shaped; one end of the limit stopper (33) is slidably connected to the sleeve (32); and the other end of the limit stopper (33) is provided with a pressure sensor (34).

3. The step-crossing transport device according to claim 1, characterized in that: The foldable support mechanism (6) further comprises a fixed rod (63) and a telescopic cylinder (64); the fixed rod (63) extends radially along the synchronous shaft (53); the arc-shaped guide rail (61) penetrates and slides on the fixed rod (63); one end of the telescopic cylinder (64) is hinged to the side of the fixed rod (63); and the other end of the telescopic cylinder (64) is hinged to the end of the arc-shaped guide rail (61).

4. The step-crossing transport device according to claim 1, characterized in that: The deployable stabilizing bracket (7) further comprises a supporting foot pad (73), wherein the supporting foot pad (73) is ball-hinged to the bottom of the folding connecting rod (71) at the bottom end.

5. The step-crossing transport device according to claim 1, characterized in that: A linear adjustment rod (4) is provided at each of the four corners of the bottom plate (2), a ball joint (41) is provided at the top end of each linear adjustment rod (4), and the four corners of the top plate (1) are respectively sleeved on the four ball joints (41).

6. The step-crossing transport device according to claim 1, characterized in that: The top plate (1) is provided with an inclination sensor (8), and the signal of the inclination sensor (8) is connected to the linear adjustment rod (4).

7. The step-crossing transport device according to claim 1, characterized in that: The cross-sectional shape of the support block (62) is a right-angled triangle, and a wear-resistant liner is provided at the right-angled vertex of the support block (62).

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