Platform framework structure and mining dump truck

Abstract

The utility model provides a platform skeleton structure and mining dump truck, the platform skeleton structure comprises an external frame structure and an internal frame structure, the external frame structure is provided with an accommodating cavity, the internal frame structure is arranged in the accommodating cavity and is welded with the external frame structure, the internal frame structure comprises a longitudinal beam, a support beam and a plurality of cross beams, the length direction of the longitudinal beams is parallel to the length direction of the supporting beams, the length direction of the longitudinal beams is perpendicular to the length direction of the cross beams, the two ends of each longitudinal beam are fixedly connected to the external frame structure, the cross beams are distributed in parallel at intervals, the two ends of each cross beam are fixedly connected to the external frame structure, and the supporting beams are at least arranged between two adjacent cross beams in one set. The two ends of the supporting beams are fixedly connected to the two adjacent cross beams correspondingly.

Description

Technical Field

[0001] The utility model relates to the technical field of mining machinery, in particular to a platform skeleton structure and a mining dump truck. Background Art

[0002] Mining dump trucks are mainly used to transport earth and stone materials in large mines and belong to the category of off-road vehicles. Since their body width is much larger than that of ordinary vehicles, in order to ensure the driver's driving field of vision and out of consideration for installation space and manufacturing costs, the cab is usually distributed on the left front side of the vehicle body, and a platform is left on the right front side of the vehicle body for installing some vehicle accessories, providing access and alighting channels, maintenance channels, etc. The platform frame provides a mounting structure, bears the weight of the platform, and provides a connection with the frame. It is the main body of the entire platform design. That is, the platform frame is used to support the entire right platform of the mining dump truck and provide an installation position for accessories, and plays a role in connecting to the vehicle frame. The skeleton structure in the prior art is divided into load-bearing platforms and non-load-bearing platforms. Among them, the cab of the load-bearing platform is installed on the platform skeleton structure, while the cab of the non-load-bearing platform is not installed on the platform skeleton structure.

[0003] Existing platform frames are typically made of steel or alloy materials, with multiple components held together by a number of welds. This type of welding typically utilizes traditional tailored welding techniques, with the frame's crossbeams, longitudinal beams, and reinforcing beams welded together to form the basic structure supporting the vehicle's right platform. However, current platform frame structures often suffer from uneven weld strength and are prone to cracking or deformation. This can lead to fatigue failure, particularly during prolonged vehicle use or when subjected to significant impact loads, thus impacting the vehicle's usability and durability. Utility Model Content

[0004] The purpose of the utility model is to provide a platform skeleton structure to solve the problems of uneven strength of the platform skeleton structure welds, easy cracking or deformation, and fatigue failure caused by large impact loads.

[0005] The utility model provides a platform skeleton structure, comprising an external frame structure and an internal frame structure, wherein the external frame structure has an accommodating cavity, the internal frame structure is placed in the accommodating cavity and is welded to the external frame structure, the internal frame structure comprises a longitudinal beam, a support beam and a plurality of cross beams, the length direction of the longitudinal beam is parallel to the length direction of the support beam, the length direction of the longitudinal beam is perpendicular to the length direction of the cross beam, both ends of the longitudinal beam are respectively fixedly connected to the external frame structure, the cross beams are distributed in parallel and at intervals, and both ends of the cross beams are respectively fixedly connected to the external frame structure, the support beam is at least provided between a group of two adjacent cross beams, and the two ends of the support beam are respectively fixedly connected to the two adjacent cross beams.

[0006] In one embodiment of the present invention, the crossbeams are the first crossbeam, the second crossbeam, the third crossbeam, the fourth crossbeam and the fifth crossbeam, the first crossbeam, the second crossbeam, the third crossbeam, the fourth crossbeam and the fifth crossbeam are parallel to each other and spaced apart, and the longitudinal beam is fixedly connected to the first crossbeam, the second crossbeam, the third crossbeam, the fourth crossbeam and the fifth crossbeam in sequence.

[0007] In one embodiment of the present invention, the support beam includes a first support beam and a second support beam, the two ends of the first support beam are respectively fixedly connected to the first cross beam and the second cross beam, and the two ends of the second support beam are respectively fixedly connected to the fourth cross beam and the fifth cross beam.

[0008] In an embodiment of the present invention, there are two first support beams, and the two first support beams are located on both sides of the longitudinal beam.

[0009] In one embodiment of the present invention, the external frame structure includes a first beam segment, a second beam segment, a third beam segment and a fourth beam segment, and the first beam segment, the second beam segment, the third beam segment and the fourth beam segment are connected in sequence and enclosed to form the accommodating cavity.

[0010] In one embodiment of the present invention, one side of the first crossbeam abuts against the first beam section and is fixedly connected to the first beam section, and one side of the fifth crossbeam abuts against the third beam section and is fixedly connected to the third beam section.

[0011] In one embodiment of the present utility model, the platform skeleton structure also includes a bracket component, and there are three bracket components. The three bracket components are fixedly installed on the third beam section at intervals. The bracket component is provided with a first mounting hole, and the first beam section is provided with a second mounting hole. The first mounting hole located in the bracket component is connected to the frame through a fastener, and the second mounting hole located in the first beam section is connected to the frame through a fastener.

[0012] In one embodiment of the present invention, the bracket component is composed of a U-shaped steel plate, the tops of both sides of the U-shaped steel plate are connected to the third beam section by welding, and the bottom surface of the U-shaped steel plate constitutes the bottom of the bracket component.

[0013] In one embodiment of the present invention, the platform skeleton structure also includes a vertical assembly mounting component, which is installed on the external frame structure and is perpendicular to the plane formed by the external frame structure. The vertical assembly mounting component is provided with an opening for installing accessories such as rearview mirrors.

[0014] The utility model also provides a mining dump truck, comprising a vehicle frame. The mining dump truck also comprises the platform skeleton structure described above, and the platform skeleton structure is fixedly connected to the vehicle frame.

[0015] In the platform frame structure and mining dump truck of the present invention, a large number of reinforcing beams are eliminated, which greatly reduces the weight of the vehicle compared with the traditional right platform frame weldment. This lightweight design not only reduces the vehicle's own weight, but also improves the performance of the vehicle; the overall structure is simpler and more compact, significantly reduces the number of welding points, reduces the risk of stress concentration and weld fatigue failure, has a high safety factor, and improves welding quality and durability; while ensuring strength, the number of parts of the platform frame structure is reduced, and the manufacturing process is simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram from a first perspective of the platform skeleton structure of an embodiment of the present invention.

[0017] Figure 2 This is a schematic structural diagram from a second perspective of the platform skeleton structure of an embodiment of the present utility model. DETAILED DESCRIPTION

[0018] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] The utility model provides a platform skeleton structure, such as Figure 1-2 As shown, the platform skeleton structure of one embodiment includes an external frame structure 11 and an internal frame structure 12. The external frame structure 11 has a receiving cavity 115, and the internal frame structure 12 is placed in the receiving cavity 115 and welded to the external frame structure 11. The internal frame structure 12 includes a longitudinal beam 126, a support beam, and a plurality of cross beams. The longitudinal beam 126 has a length parallel to that of the support beam, and the longitudinal beam 126 has a length perpendicular to that of the cross beam. The longitudinal beam 126 has two ends fixedly connected to the external frame structure 11, and the cross beams are spaced apart in parallel, and the two ends of the cross beams are fixedly connected to the external frame structure 11. The support beam is provided between at least two adjacent cross beams, and the two ends of the support beam are fixedly connected to two adjacent cross beams.

[0020] In the platform skeleton structure of the present invention, a large number of reinforcing beams are eliminated, which greatly reduces the weight of the vehicle compared with the traditional right platform skeleton weldments. This lightweight design not only reduces the vehicle's own weight, but also improves the performance of the vehicle; the overall structure is simpler and more compact, significantly reducing the number of welding points, reducing the risk of stress concentration and weld fatigue failure, with a high safety factor, and improving welding quality and durability; while ensuring strength, the number of parts of the platform skeleton structure is reduced, simplifying the manufacturing process.

[0021] In this embodiment, the crossbeams are the first crossbeam 121, the second crossbeam 122, the third crossbeam 123, the fourth crossbeam 124 and the fifth crossbeam 125. The first crossbeam 121, the second crossbeam 122, the third crossbeam 123, the fourth crossbeam 124 and the fifth crossbeam 125 are parallel to each other and spaced apart. The longitudinal beam 126 is fixedly connected to the first crossbeam 121, the second crossbeam 122, the third crossbeam 123, the fourth crossbeam 124 and the fifth crossbeam 125 in sequence.

[0022] From the above, it can be seen that five beams are provided in this embodiment. Of course, those skilled in the art can set the number of beams to 2, 3, 4, 6, 7, etc. according to actual conditions, and this is not limited here.

[0023] In this embodiment, the cross beam and the longitudinal beam are both composed of channel steel, which can be bent from high-strength steel. The channel steel includes two side walls and a connecting bottom surface. The two side walls are symmetrically located on both sides of the connecting bottom surface, and the bottom surface of the cross beam and the bottom surface of the longitudinal beam are both composed of the connecting bottom surface of the channel steel. This structure can meet the structural strength requirements, reduce the overall mass, and reduce the energy consumption of the vehicle. In addition, the platform skeleton structure reserves a reasonable space to facilitate assembly on the vehicle.

[0024] In this embodiment, the support beams include a first support beam 127 and a second support beam 128. The ends of the first support beam 127 are fixedly connected to the first crossbeam 121 and the second crossbeam 122, respectively. The ends of the second support beam 128 are fixedly connected to the fourth crossbeam 124 and the fifth crossbeam 125, respectively. The provision of the first and second support beams 127, 128 enhances the overall structural strength while also enabling the platform skeleton structure to provide better support for installation. Specifically, there are two first support beams 127, located on either side of the longitudinal beam 126.

[0025] It is understood that the installation positions of the first support beam 127 and the second support beam 128 are not limited to the above positions. The first support beam 127 can also be fixedly connected between the second crossbeam 122 and the third crossbeam 123, or between the third crossbeam 123 and the fourth crossbeam 124, or between the fourth crossbeam 124 and the fifth crossbeam 125. Similarly, the second support beam 128 can also be fixedly connected between the third crossbeam 123 and the fourth crossbeam 124, or between the second crossbeam 122 and the third crossbeam 123, or between the first crossbeam 121 and the second crossbeam 122.

[0026] In this embodiment, the external frame structure 11 includes a first beam segment 111, a second beam segment 112, a third beam segment 113 and a fourth beam segment 114. The first beam segment 111, the second beam segment 112, the third beam segment 113 and the fourth beam segment 114 are connected in sequence and enclosed to form a receiving cavity 115.

[0027] Specifically, the second beam section 112 includes a first portion 1121, a second portion 1122, and a third portion 1123. One end of the first portion 1121 is fixedly connected to the first beam section 111, the other end of the first portion 1121 is fixedly connected to one end of the second portion 1122, the other end of the second portion 1122 is fixedly connected to the fifth crossbeam 125, one end of the third portion 1123 is fixedly connected to the second portion 1122, and the other end of the third portion 1123 is fixedly connected to the third beam section 113. The first portion 1121, the second portion 1122, and the third portion 1123 are arranged along the length direction of the first crossbeam 121.

[0028] In this embodiment, one side of the first crossbeam 121 abuts against the first beam section 111 and is fixedly connected to the first beam section 111, and one side of the fifth crossbeam 125 abuts against the third beam section 113 and is fixedly connected to the third beam section 113. This arrangement makes the platform skeleton structure more stable as a whole and increases the connection strength.

[0029] In this embodiment, the platform skeleton structure further includes three bracket components 13, each of which is fixedly mounted to the third beam section 113 at intervals. The bracket components 13 define a first mounting hole, and the first beam section 111 defines a second mounting hole. The first mounting hole in the bracket components 13 is connected to the vehicle frame (not shown) via a fastener, and the second mounting hole in the first beam section 111 is connected to the vehicle frame (not shown) via a fastener. It should be noted that those skilled in the art may configure the number of bracket components 13 to one, two, four, five, or the like, depending on actual circumstances, and this is not intended to be a single limitation.

[0030] Specifically, the bracket component 13 is constructed from a U-shaped steel plate. The top ends of the U-shaped plate are welded to the third beam section 113, and the bottom surface of the U-shaped plate forms the base of the bracket component 13. Specifically, the bottom surface of the plate is provided with a first mounting hole. The U-shaped bracket component 13 offers high strength, stability, light weight, and a compact footprint. This structure enhances the fit of the platform skeleton structure with the vehicle frame (not shown), allowing for better installation of the platform skeleton structure on the vehicle frame (not shown).

[0031] In this embodiment, the platform skeleton structure also includes a vertical assembly mounting component 14, which is installed on the external frame structure 11 and is perpendicular to the plane formed by the external frame structure 11. The vertical assembly mounting component 14 is provided with an opening for installing accessories such as rearview mirrors.

[0032] Specifically, the vertical assembly mounting assembly 14 includes a first connecting beam 141, a second connecting beam 142, a third connecting beam 143, a fourth connecting beam 144, a fifth connecting beam 145, and a sixth connecting beam. One end of the first connecting beam 141 is fixedly connected to the third beam section 113, the other end of the first connecting beam 141 is fixedly connected to one end of the second connecting beam 142, the other end of the second connecting beam 142 is fixedly connected to one end of the third connecting beam 143, one end of the fourth connecting beam 144 is fixedly connected to both the second connecting beam 142 and the third connecting beam 143, the other end of the third connecting beam 143 extends downwardly through the outer frame structure 11 along the longitudinal direction, the other end of the fourth connecting beam 144 is fixedly connected to one end of the fifth connecting beam 145, and the other end of the fifth connecting beam 145 extends upwardly along the longitudinal direction. The longitudinal directions of the first connecting beam 141, the third connecting beam 143, and the fifth connecting beam 145 are parallel to each other.

[0033] Specifically, the vertical assembly mounting assembly 14 further includes a first diagonal brace 146, a second diagonal brace 147, and a third diagonal brace 148. The first diagonal brace 146 has two ends fixedly connected to the second connecting beam 142 and the fourth connecting beam 144, respectively. The third diagonal brace 148 has two ends fixedly connected to the fourth connecting beam 144 and the fifth connecting beam 145, respectively. The second diagonal brace 147 has two ends fixedly connected to the third connecting beam 143 and the fourth connecting beam 144, respectively.

[0034] Specifically, the vertical assembly mounting assembly 14 also includes a sixth connecting beam 149 and a seventh connecting beam 1401. One end of the sixth connecting beam 149 is fixedly connected to the other end of the third connecting beam 143, and the other end of the sixth connecting beam 149 is fixedly connected to one end of the seventh connecting beam 1401. The other end of the seventh connecting beam 1401 is fixedly connected to the fourth beam section 114. Two bent plates 15 are fixedly connected to the sixth connecting beam 149, located at either end of the sixth connecting beam 149, and are reinforced with pads.

[0035] The utility model also provides a mining dump truck, which comprises a vehicle frame. The mining dump truck also comprises the platform skeleton structure as described above, and the platform skeleton structure is fixedly connected to the vehicle frame.

[0036] In this document, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms based on specific circumstances.

[0037] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of the technical solution and the convenience of description. Therefore, they should not be understood as limitations on the present invention.

[0038] As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A platform skeleton structure, characterized in that: The invention comprises an external frame structure (11) and an internal frame structure (12), wherein the external frame structure (11) has a receiving cavity (115), the internal frame structure (12) is placed in the receiving cavity (115) and is welded to the external frame structure (11), the internal frame structure (12) comprises a longitudinal beam (126), a support beam and a plurality of cross beams, the length direction of the longitudinal beam (126) is parallel to the length direction of the support beam, the length direction of the longitudinal beam (126) is perpendicular to the length direction of the cross beam, the two ends of the longitudinal beam (126) are respectively fixedly connected to the external frame structure (11), the cross beams are distributed in parallel and spaced apart, and the two ends of the cross beams are respectively fixedly connected to the external frame structure (11), the support beam is at least provided between a group of two adjacent cross beams, and the two ends of the support beam are respectively fixedly connected to the two adjacent cross beams.

2. The platform skeleton structure according to claim 1, characterized in that: The crossbeams are a first crossbeam (121), a second crossbeam (122), a third crossbeam (123), a fourth crossbeam (124) and a fifth crossbeam (125); the first crossbeam (121), the second crossbeam (122), the third crossbeam (123), the fourth crossbeam (124) and the fifth crossbeam (125) are arranged parallel to each other and spaced apart; the longitudinal beam (126) is fixedly connected to the first crossbeam (121), the second crossbeam (122), the third crossbeam (123), the fourth crossbeam (124) and the fifth crossbeam (125) in sequence.

3. The platform skeleton structure according to claim 2, characterized in that: The support beam comprises a first support beam (127) and a second support beam (128), wherein two ends of the first support beam (127) are respectively fixedly connected to the first crossbeam (121) and the second crossbeam (122), and two ends of the second support beam (128) are respectively fixedly connected to the fourth crossbeam (124) and the fifth crossbeam (125).

4. The platform skeleton structure according to claim 3, characterized in that: There are two first support beams (127), and the two first support beams (127) are located on both sides of the longitudinal beam (126).

5. The platform skeleton structure according to claim 2, characterized in that: The external frame structure (11) comprises a first beam section (111), a second beam section (112), a third beam section (113) and a fourth beam section (114); the first beam section (111), the second beam section (112), the third beam section (113) and the fourth beam section (114) are sequentially connected and enclosed to form the accommodating cavity (115).

6. The platform skeleton structure according to claim 5, characterized in that: One side of the first crossbeam (121) abuts against the first beam section (111) and is fixedly connected to the first beam section (111), and one side of the fifth crossbeam (125) abuts against the third beam section (113) and is fixedly connected to the third beam section (113).

7. The platform skeleton structure according to claim 5, characterized in that: The platform skeleton structure further includes a bracket component (13), wherein there are three bracket components (13), and the three bracket components (13) are fixedly installed at intervals on the third beam section (113), the bracket component (13) is provided with a first mounting hole, and the first beam section (111) is provided with a second mounting hole, the first mounting hole located in the bracket component (13) is connected to the vehicle frame via a fastener, and the second mounting hole located in the first beam section (111) is connected to the vehicle frame via a fastener.

8. The platform skeleton structure according to claim 7, characterized in that: The bracket component (13) is composed of a U-shaped steel plate, the tops of both sides of the U-shaped steel plate are connected to the third beam section (113) by welding, and the bottom surface of the U-shaped steel plate constitutes the bottom of the bracket component (13).

9. The platform skeleton structure according to claim 1, characterized in that: The platform skeleton structure further includes a vertical assembly mounting component (14), which is mounted on the external frame structure (11) and is perpendicular to a plane formed by the external frame structure (11). The vertical assembly mounting component (14) is provided with an opening for mounting accessories such as a rearview mirror.

10. A mining dump truck, comprising a frame, characterized in that: The mining dump truck further comprises a platform skeleton structure as described in any one of claims 1 to 9, wherein the platform skeleton structure is fixedly connected to the vehicle frame.

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