Extensible assembly type material transport vehicle

Abstract

The utility model discloses an extensible assembled material transport vehicle which comprises at least two frame assemblies, a bearing unit, a wheel unit and a traction unit, and the adjacent frame assemblies are connected through connecting pieces. The bearing unit is installed on the frame assembly and matched with the side wall of the frame assembly to form a material containing area. The wheel units are rotationally connected with the frame assembly and symmetrically arranged at the two ends of the frame assembly. The traction unit is installed at one end of the frame assembly and used for driving the transport vehicle to move and controlling steering. According to the extensible splicing type material transport vehicle, the overall length of the transport vehicle is adjusted by increasing or decreasing the number of the frame assemblies, the transport vehicle can be spliced according to the length of materials needing to be carried, the materials are placed in the material placing area on the transport vehicle, and the transport vehicle can walk by pulling the traction unit; the vehicle body can turn by rotating the traction unit, materials are transferred to a designated position, and transportation is convenient and flexible.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction material transportation technology, and more specifically, to an expandable modular material transport vehicle. Background Technology

[0002] In the construction process, the on-site transfer of construction materials is a crucial link affecting project efficiency and cost. Currently, the industry commonly uses large lifting machinery (such as tower cranes and truck cranes) and freight vehicles for this transfer, supplemented by some manual handling. However, existing technologies have revealed significant limitations in practical applications, specifically in the following aspects:

[0003] The economic drawbacks of large-scale lifting machinery: While tower cranes and truck cranes are suitable for vertical or horizontal lifting of large quantities of materials, their rental costs are high (approximately 2,000-5,000 yuan per unit per day) and require specialized operators. For small-scale operations with low daily transport volumes, insufficient machinery utilization leads to a sharp increase in unit transportation costs. Furthermore, the lifting path is significantly limited by the boom's working radius (usually no more than 80 meters) and site obstacles, making precise delivery in complex areas difficult.

[0004] The applicability of freight vehicles is limited. While truck transshipment can achieve long-distance transportation, it is often necessary to transfer materials multiple times due to the limitations of temporary road conditions and the spatial layout of material storage areas at construction sites. Statistics show that in construction sites with an area exceeding 2000 square meters, the average transshipment efficiency of trucks within the yard is about 40% lower than the design value. Furthermore, for small, scattered materials transported in small quantities each time, frequent vehicle dispatching will lead to a significant increase in fuel costs and carbon emissions.

[0005] The efficiency bottleneck of manual handling: While manual handling offers apparent advantages in terms of flexibility, two major technical challenges exist in actual operations: First, workers' single-load capacity is limited (usually not exceeding 50kg), resulting in low daily effective handling volume; second, repetitive physical labor easily leads to muscle strain. According to a construction industry work injury statistics report, 27.6% of occupational diseases are directly related to manual handling operations. Safety hazards and labor costs are particularly prominent when transferring heavy materials such as steel bars and precast components.

[0006] Chinese Patent Application No. 201820102022.2 discloses a reusable small transport vehicle that can be quickly maneuvered during construction, saving significant costs, time, and labor. It includes a transport vehicle unit comprising a frame and a chassis, connected by fasteners. Triangular steel is welded at the connection between the chassis and frame to ensure vehicle stability. This allows for rapid assembly during construction, convenient operation, and quick maneuverability, saving considerable time and labor.

[0007] However, the frame of the aforementioned transport vehicle unit adopts a fixed frame structure, making it impossible to adjust the length of the transport vehicle unit according to the length of the transported materials. Utility Model Content

[0008] To overcome the problem that existing transport vehicles use a fixed frame structure and cannot adjust the length of the transport vehicle according to the length of the transported materials, this utility model provides an expandable modular material transport vehicle.

[0009] The technical solution of this utility model is as follows:

[0010] A scalable modular material transport vehicle includes:

[0011] At least two frame components, adjacent frame components being connected by connectors;

[0012] A support unit is mounted on the frame assembly and cooperates with the side wall of the frame assembly to form a material placement area;

[0013] A wheel unit, which is rotatably connected to the frame assembly, and the wheel unit is symmetrically disposed at both ends of the frame assembly;

[0014] A traction unit is installed at one end of the frame assembly and is used to drive the transport vehicle to move and control its steering.

[0015] According to the above-described scheme of this utility model, the frame assembly includes a base frame and side support arms. The base frame is in the shape of an "I" and the side support arms are symmetrically arranged at both ends of the base frame.

[0016] According to the above-described scheme of this utility model, the base frame includes a first component and a second component. The two first components are symmetrically arranged at both ends of the second component. The first component is sleeved on the connecting member and the first component and the connecting member are connected by bolts.

[0017] According to the above-described scheme of this utility model, the base frame includes a first component and a second component, with two first components symmetrically arranged at both ends of the second component, and the connecting piece sleeved on the outside of the first component, and the first component and the connecting piece connected by bolts.

[0018] According to the present invention based on the above scheme, the bearing unit includes a plurality of connecting rods and mounting components. Adjacent connecting rods are connected by the mounting components, and the mounting components are hollow cylindrical structures. The mounting components are used to install crossbars to connect adjacent bearing units.

[0019] According to the present invention based on the above scheme, the bearing unit further includes a base plate, one end of which of the connecting rods is connected to the base plate, and the base plate is mounted on the frame assembly.

[0020] According to the above-described scheme of this utility model, the wheel unit includes a support frame and a wheel. The support frame is in the shape of an inverted "U", and the wheel is rotatably disposed within the support frame.

[0021] According to the above-described scheme of this utility model, the end of the support frame is provided with a bearing, which is used for steering the wheel unit.

[0022] According to the present invention based on the above scheme, the traction unit is U-shaped and is connected to the frame assembly by bolts.

[0023] According to the above-described scheme of this utility model, the frame assembly, the bearing unit, and the support frame are all assembled by splicing steel tubes.

[0024] According to the above-mentioned solution, the beneficial effects of this utility model are as follows: the expandable modular material transport vehicle of this utility model can adjust the overall length of the transport vehicle by increasing or decreasing the number of frame components. The length of the transport vehicle can be increased by adding sections according to the length of the materials to be transported. The materials are placed in the material placement area on the transport vehicle, and the traction unit is pulled to make the transport vehicle move. The traction unit can be rotated to make the vehicle turn and move the materials to the designated position. The transportation is convenient, flexible and cost-effective. Attached Figure Description

[0025] Figure 1 This is the front view of the present invention;

[0026] Figure 2 This is a side view of the present invention;

[0027] Figure 3 This is a rear view of the present invention;

[0028] Figure 4 This is a structural schematic diagram of the frame component of this utility model;

[0029] Figure 5 This is a schematic diagram showing the connection between the frame assembly and the wheel unit of this utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the support unit of this utility model.

[0031] In the figure, the various attached figures are labeled as follows:

[0032] 10. Frame assembly; 11. Connector; 12. Base frame; 121. First component; 122. Second component; 13. Side support arm; 20. Bearing unit; 21. Connecting rod; 22. Mounting component; 23. Crossbar; 24. Base plate; 30. Wheel unit; 31. Support frame; 32. Wheel; 33. Bearing; 40. Traction unit; 50. Material. Detailed Implementation

[0033] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] It should be noted that the terms "comprising" and "having," and any variations thereof, in the specification and claims of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. Terms such as "set up" should be interpreted broadly; for example, it can refer to a fixed connection, a detachable connection, or an integral part; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements or the interaction between two elements, unless otherwise expressly defined. Terms such as "upper," "lower," "left," "right," "front," "rear," and "bottom" indicate orientations or positions based on the orientations or positions shown in the accompanying drawings, and are only for ease of description and should not be construed as limiting the present technical solution.

[0035] It should be noted that Chinese Patent Application No. 201820102022.2 discloses a reusable small transport vehicle that can be quickly maneuvered during construction, saving significant costs, time, and labor. It includes a transport vehicle unit comprising a frame and a chassis, with the frame and chassis connected by fasteners. Triangular steel is welded at the connection between the chassis and frame to ensure the vehicle's stability. This allows the transport vehicle to be quickly assembled during construction, is easy to operate, and can be quickly maneuvered, saving considerable time and labor.

[0036] However, the frame of the aforementioned transport vehicle unit adopts a fixed frame structure, making it impossible to adjust the length of the transport vehicle unit according to the length of the transported materials.

[0037] like Figures 1-6 As shown, this embodiment provides an expandable modular material transport vehicle. The overall length of the transport vehicle can be adjusted by increasing or decreasing the number of frame components. The length of the transport vehicle can be increased by adding sections according to the length of the materials to be transported. The materials are placed in the material placement area on the transport vehicle, and the traction unit is pulled to make the transport vehicle move. The traction unit can be rotated to make the vehicle turn and move the materials to the designated location. The transportation is convenient, flexible and cost-effective.

[0038] Specifically, the expandable modular material transport vehicle includes a frame assembly, a load-bearing unit, a wheel unit, and a traction unit. There are at least two frame assemblies, and adjacent frame assemblies are connected by connectors. The load-bearing unit is mounted on the frame assembly and cooperates with the side wall of the frame assembly to form a material placement area. The wheel unit is rotatably connected to the frame assembly and is symmetrically arranged at both ends of the frame assembly. The traction unit is mounted at one end of the frame assembly and is used to drive the transport vehicle to move and control its steering.

[0039] It should be noted that the length of the transport vehicle can also be adjusted by using connectors of different lengths.

[0040] In one embodiment, the frame assembly includes a base frame and side support arms. The base frame is I-shaped, and the side support arms are symmetrically located at both ends of the base frame. The base frame, through the symmetrically distributed side support arms and connectors, forms a three-dimensional truss structure with a large moment of inertia, excellent bending and torsional resistance, and can effectively support heavy materials while preventing vehicle body deformation. The I-shaped base frame allows for connection to connectors on both sides, enabling rapid assembly of multiple frame components. This allows the transport vehicle to handle diverse transportation tasks without requiring customized vehicles for specific cargo sizes, greatly improving equipment utilization and adaptability.

[0041] The base frame includes a first component and a second component. The two first components are symmetrically located at both ends of the second component. The first components use standardized connection interfaces and are fitted onto the connectors. The first components and connectors are connected by bolts, enabling "plug-and-play" assembly of the frame components. The operator only needs to insert the two ends of the connectors into the reserved slots of the first components of the adjacent frame components, and then complete the expansion by connecting them laterally with bolts. No complicated tools or welding processes are required, simplifying the assembly process and greatly improving the reusability and adaptability of the equipment.

[0042] In other alternative embodiments, the base frame includes a first component and a second component. The two first components are symmetrically arranged at both ends of the second component. The connectors adopt standardized connection interfaces, are sleeved on the first components, and are connected to the first components and the connectors by bolts, realizing "plug-and-play" assembly of the frame components. The operator only needs to insert the first components of adjacent frame components into the reserved slots at both ends of the connectors, and complete the expansion by connecting them laterally with bolts. No complicated tools or welding processes are required, simplifying the assembly process and greatly improving the reusability and adaptability of the equipment.

[0043] In one embodiment, the load-bearing unit includes several connecting rods and mounting components. Adjacent connecting rods are connected by mounting components, which are hollow cylindrical structures. The mounting components are used to install crossbars to connect adjacent load-bearing units. The cooperation between the hollow cylindrical mounting components and the connecting rods enables "plug-in" rapid assembly of the load-bearing units. The operator only needs to insert the crossbar into the pre-drilled through-holes in the mounting components of adjacent load-bearing units to complete the rigid connection between the load-bearing units, without the need for welding or complex fastening tools.

[0044] The load-bearing unit also includes a base plate, the end of which is connected to the base plate. The base plate is mounted on the frame assembly and secured to the frame assembly with bolts. The load-bearing unit can be placed in the middle of the frame assembly or at other locations as needed.

[0045] In one embodiment, the wheel unit includes a support frame and a wheel. The support frame is in the shape of an inverted "U," and the wheel is rotatably mounted within the support frame. The support frame forms a load-bearing frame through symmetrically distributed steel tubes on both sides, which can effectively distribute the vertical load and lateral impact force of the wheel unit.

[0046] In one embodiment, the end of the support frame is provided with a bearing for steering the wheel unit.

[0047] The traction unit is U-shaped and bolted to the frame assembly. Bearings at the ends of the support frame form an articulated steering structure with the frame assembly. This is controlled by the U-shaped tie rod of the traction unit, allowing the transport vehicle to achieve a minimal turning radius in confined spaces. The bearings are sealed deep groove ball bearings filled with high-temperature resistant grease, ensuring smooth steering even in dusty or muddy environments, significantly improving maneuverability and transport efficiency.

[0048] In one embodiment, the frame components, load-bearing units, and support frames are all assembled using steel tubes and bolted connections, enabling rapid "building block" assembly. Users can freely combine the length and connection angle of the steel tubes (such as horizontal expansion or vertical stacking) according to transportation needs to form customized vehicle bodies that adapt to different material sizes.

[0049] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0050] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. An expandable knock-down material transport vehicle, characterized by, The utility model relates to a transport vehicle, comprising: at least two frame assemblies, adjacent frame assemblies are connected by a connecting piece; a carrying unit mounted on the frame assembly and cooperating with the side wall of the frame assembly to form a material placement area; a wheel unit rotatably connected to the frame assembly, the wheel unit being symmetrically arranged at both ends of the frame assembly; a traction unit mounted at one end of the frame assembly for driving the transport vehicle to move and control steering.

2. An expandable flat-pack material transport vehicle according to claim 1, wherein, The frame assembly comprises a chassis and side support arms, the chassis being in the shape of an "H", and the side support arms being symmetrically arranged at both ends of the chassis.

3. An expandable flat-pack material transport vehicle according to claim 2, wherein, The chassis comprises a first member and a second member, two first members being symmetrically arranged at both ends of the second member, the first member being sleeved outside the connecting piece and being connected to the connecting piece by bolts.

4. The expandable flat-pack material transport vehicle of claim 2, wherein, The chassis comprises a first member and a second member, two first members being symmetrically arranged at both ends of the second member, the connecting piece being sleeved outside the first member and being connected to the first member by bolts.

5. An expandable flat-pack material transport vehicle according to claim 1, 2, 3 or 4, wherein, The carrying unit comprises a plurality of connecting rods and mounting pieces, adjacent connecting rods being connected by the mounting pieces, the mounting pieces being in the shape of a hollow cylinder, the mounting pieces being used for mounting crossbars to connect adjacent carrying units.

6. An expandable flat-pack material transport vehicle according to claim 5, wherein, The carrying unit further comprises a bottom plate, the end of one of the connecting rods being connected to the bottom plate, the bottom plate being mounted on the frame assembly.

7. An expandable flat-pack material transport vehicle according to claim 1 or 6, wherein, The wheel unit comprises a support frame and a wheel, the support frame being in the shape of an inverted "U", and the wheel being rotatably arranged in the support frame.

8. An expandable flat-pack material transport vehicle according to claim 7, wherein, The end of the support frame is provided with a bearing, the bearing being used for steering the wheel unit.

9. An expandable flat-pack material transport vehicle according to claim 1, wherein, The traction unit is in the shape of a "U", and the traction unit is connected to the frame assembly by bolts.

10. The expandable flat-pack material transport vehicle of claim 7, wherein, The frame assembly, the carrying unit and the support frame are all connected by steel pipes.

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