A-shaped frame assembly, suspension system and mining dump truck

Abstract

The utility model discloses an A-shaped frame assembly, a suspension system and a mining dump truck. The A-shaped frame assembly comprises an A-shaped frame, a sleeve and a connecting plate II. The A-shaped frame is of a steel pipe truss type structure and is further of a left-right symmetrical structure with the center line of the A-shaped frame as the center, and a triangular frame is arranged in the A-shaped frame. The sleeve is fixed at the tip end of the front part of the A-shaped frame and is used for being matched with a hinging component to be connected with a frame; the connecting plates II are fixed to the end faces of the two sides of the rear portion of the A-shaped frame respectively and used for being matched with fixing components to be connected with an axle. The seamless steel pipe is applied to the A-shaped frame of the mining dump truck for the first time, and the limitation of a traditional box beam structure is broken through; the seamless steel pipe truss and triangular rib plate node combination form has the advantages of light weight, high strength and the like.

Description

Technical Field

[0001] This utility model relates to an A-frame assembly, belonging to the technical field of mining dump trucks. Background Technology

[0002] Due to its simple structure and robust durability, the A-frame-based suspension structure is widely used in mining dump trucks. Traditional mining dump truck A-frames mostly adopt a welded box-beam structure (patent application number: 202022773167.5). The existing technology has the following technical problems and defects:

[0003] 1. Traditional A-frames use box beam structures with dense welds, which easily lead to thermal stress concentration, increasing the risk of welding deformation and fatigue cracks, and affecting the structural lifespan;

[0004] 2. Heavy and unevenly distributed weight;

[0005] 3. Limited torsional resistance; box-shaped cross-sections are prone to local deformation under extreme working conditions.

[0006] 4. The process is complex, requiring multiple bending, snapping, and sealing steps, resulting in high manufacturing costs and low material utilization, which does not conform to the trend of green manufacturing.

[0007] 5. The connection structure with the axle and shock absorber is complex and difficult to manufacture.

[0008] 6. Box girder has a large cross-section, resulting in high wind resistance, high drag during vehicle operation, and high fuel consumption. It is also prone to wind vibration at high speeds. Summary of the Invention

[0009] To address the shortcomings of existing technologies, this utility model provides an A-frame assembly, which for the first time applies seamless steel pipes to the A-frame of a mining dump truck, breaking through the limitations of traditional box beam structures; the combination of seamless steel pipe truss and triangular stiffener plate nodes offers advantages such as light weight and high strength.

[0010] This utility model is achieved according to the following technical solution:

[0011] In a first aspect, this utility model provides an A-frame assembly, comprising:

[0012] The A-frame is a steel pipe truss structure, and it is also a symmetrical structure about the center line of the A-frame. A triangular frame is provided in the A-frame.

[0013] A sleeve is fixed at the front tip of the A-frame and is used to connect the hinged component to the vehicle frame.

[0014] Connecting plate II is fixed to the rear two end faces of the A-frame, and is used to connect the fixing component to the axle.

[0015] In some embodiments, the A-frame includes:

[0016] Connecting plate I, which is an arc-shaped plate, is used to form the front tip of the A-frame;

[0017] Two main support pipes I are arranged symmetrically about the center line of connecting plate I, and the two main support pipes I are fixedly connected to connecting plate I;

[0018] Main support tube II is fixedly connected between two main support tubes I near the connecting plate II, and the main support tube II and the two main support tubes I form a triangular frame;

[0019] Two inclined support pipes are arranged symmetrically about the center line of connecting plate I. The two inclined support pipes are respectively connected between main support pipe II and the corresponding main support pipe I. The inclined support pipes, main support pipe I and main support pipe II form a triangular frame.

[0020] In some embodiments, the main support tube I has a horizontally inwardly extending insertion groove in the central region of the end face facing the connecting plate I, and the rear end of the connecting plate I is inserted into the insertion groove and then welded together.

[0021] In some embodiments, the openings between the end face of the main support pipe I and the top and bottom surfaces of the connecting plate I are sealed by welding a sealing plate with the same shape as the opening.

[0022] In some embodiments, the front end of the connecting plate I is provided with an arc-shaped groove, the sleeve is embedded in the arc-shaped groove, and the outer circumferential surface of the sleeve is completely fitted with the inner circumferential surface of the arc-shaped groove and then welded together. The axial center line of the sleeve is perpendicular to the transverse section of the connecting plate I.

[0023] In some embodiments, at least one triangular support rib plate I is fixedly connected at the connection point between the main support pipe I and the main support pipe II near the inclined support pipe; and / or,

[0024] At least one triangular support rib plate II is fixedly connected to the connection point between the main support pipe I and the main support pipe II near the connecting plate II, and the triangular support rib plate II extends and is fixedly connected to the connecting plate II; and / or,

[0025] At least one triangular support rib plate III is fixedly connected at the connection between the main support pipe I and the connecting plate II.

[0026] In some embodiments, the main support pipe I is a bent pipe that bends outward in its middle region; one end of the inclined support pipe is connected to the middle region of the main support pipe II along its length, and the other end of the inclined support pipe is connected to the upper middle region of the main support pipe I; both ends of the main support pipe II along its length are connected to the lower middle region of the corresponding main support pipe I.

[0027] Secondly, this utility model provides a suspension system, comprising:

[0028] The frame, axles, and the aforementioned A-frame assembly;

[0029] A tie rod is arranged parallel to the axle and is hinged between the support on the axle and the frame.

[0030] Thirdly, this utility model provides a mining dump truck, including the aforementioned suspension system.

[0031] In some embodiments, the axle includes a front axle, a center axle, and a rear axle; the front axle, frame, A-frame assembly, and tie rod form a front axle suspension system; the center axle, frame, A-frame assembly, and tie rod form a center axle suspension system; and the rear axle, frame, A-frame assembly, and tie rod form a rear axle suspension system; the center axle and the rear axle are connected together by two symmetrically arranged balance beams located on both sides of the frame.

[0032] The beneficial effects of this utility model are:

[0033] This invention provides an A-frame assembly, the first to apply seamless steel pipes to the A-frame of a mining dump truck, breaking through the limitations of traditional box girder structures. The main body of the steel pipe truss A-frame is made of high-strength seamless steel pipes bent into a triangular frame, forming a high-rigidity, lightweight skeleton. It features uniform wall thickness, simple manufacturing process, minimal welding, small welding deformation, and low manufacturing cost. Lightweight yet high-strength, the seamless steel pipes have no weld defects, excellent fatigue resistance, low wind resistance coefficient, and enhanced reliability, meeting the requirements of green, energy-saving, and environmentally friendly development. Attached Figure Description

[0034] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0035] In the attached diagram:

[0036] Figure 1This is a structural schematic diagram of the A-frame assembly of this utility model;

[0037] Figure 2 This is a schematic diagram of the structure of a single suspension system of this utility model;

[0038] Figure 3 This is a schematic diagram of the structure of two suspension systems in series according to this utility model;

[0039] Figure 4 This is a schematic diagram of the assembly of the balance beam of this utility model;

[0040] Figure 5 This is a schematic diagram of the assembly of the tie rod of this utility model.

[0041] Attached diagram labels: 1. Sleeve, 2. Connecting plate I, 3. Main support tube I, 4. Diagonal support tube, 5. Triangular support rib plate I, 6. Main support tube II, 7. Triangular support rib plate II, 8. Connecting plate II, 9. Sealing plate, 10. Frame, 11. Axle, 12. Tie rod, 13. Bolt, 14. Bearing, 15. Tire, 16. Balance beam, 17. Shock absorber, 18. Right support, 19. Bearing.

[0042] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0044] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] like Figure 1 As shown, an A-frame assembly includes an A-frame, a sleeve 1, and a connecting plate II 8. The A-frame is a steel pipe truss structure and is symmetrical about the center line of the A-frame. A triangular frame is provided in the A-frame. The sleeve 1 is fixed at the front tip of the A-frame and is used to connect with the hinge component to the frame 10. The connecting plate II 8 is fixed at the rear two end faces of the A-frame and is used to connect with the fixing component to the axle 11.

[0047] The following provides a further explanation of the specific structure of the A-frame described above.

[0048] Continue to refer to Figure 1 As shown, the A-frame includes a connecting plate I2, two main support tubes I3, a main support tube II6, and two diagonal support tubes 4. The connecting plate I2 is an arc-shaped plate used to form the front tip of the A-frame. The two main support tubes I3 are arranged symmetrically about the center line of the connecting plate I2, and the two main support tubes I3 are fixedly connected to the connecting plate I2. The main support tube II6 is fixedly connected between the two main support tubes I3 near the connecting plate II8, and the main support tube II6 and the two main support tubes I3 form a triangular frame. The two diagonal support tubes 4 are arranged symmetrically about the center line of the connecting plate I2, and the two diagonal support tubes 4 are respectively connected between the main support tube II6 and the corresponding main support tube I3. The diagonal support tubes 4, the main support tubes I3, and the main support tube II6 form a triangular frame.

[0049] Further plans will continue to be considered. Figure 1 As shown, the main support pipe I3 ​​has a horizontally extending inward insertion groove in the central area of ​​the end face facing the connecting plate I2. The rear end of the connecting plate I2 is inserted into the insertion groove and then welded together.

[0050] Further plans will continue to be considered. Figure 1 As shown, the openings between the end face of the main support pipe I3 ​​and the top and bottom surfaces of the connecting plate I2 are sealed by welding a sealing plate 9 with the same shape as the opening.

[0051] Further plans will continue to be considered. Figure 1As shown, the front end of the connecting plate I2 is provided with an arc-shaped groove, the sleeve 1 is embedded in the arc-shaped groove, and the outer circumferential surface of the sleeve 1 is completely fitted with the inner circumferential surface of the arc-shaped groove and then welded together. The axial center line of the sleeve 1 is perpendicular to the transverse section of the connecting plate I2.

[0052] The preferred solution will continue to be referenced. Figure 1 As shown, at least one triangular support rib plate I5 is fixedly connected at the connection between the main support pipe I3 ​​and the main support pipe II6 near the inclined support pipe 4.

[0053] The preferred solution will continue to be referenced. Figure 1 As shown, at least one triangular support rib plate II7 is fixedly connected at the connection between the main support pipe I3 ​​and the main support pipe II6 near the connecting plate II8, and the triangular support rib plate II7 extends and is fixedly connected to the connecting plate II8.

[0054] The preferred solution will continue to be referenced. Figure 1 As shown, at least one triangular support rib plate III is fixedly connected at the connection between the main support pipe I3 ​​and the connecting plate II8.

[0055] Further plans will continue to be considered. Figure 1 As shown, the main support pipe I3 ​​is a bent pipe that bends outward in its middle region; one end of the inclined support pipe 4 is connected to the middle region of the main support pipe II6 in the length direction, and the other end of the inclined support pipe 4 is connected to the upper middle region of the main support pipe I3 ​​in the length direction; both ends of the main support pipe II6 in the length direction are connected to the lower middle region of the corresponding main support pipe I3.

[0056] The preferred design is that the seamless steel pipe is made of a material no less than Q345B, and the reinforcing plate is made of a material no less than Q355B. The wall thickness of the seamless steel pipe is no less than 6mm.

[0057] As can be seen from the above, the A-frame assembly provided by this utility model is based on a seamless steel pipe truss structure. The truss structure is lightweight and has high strength; the seamless steel pipe is bent, reducing the amount of welding and simplifying the process; the main support pipe I and the main support pipe II are connected by diagonal support pipes to form a triangular stable structure, increasing structural stability; the connecting plate I is inserted horizontally into the slot on the main support pipe I, making it a whole and increasing structural strength; the assembly is a combination of seamless steel pipe truss and triangular stiffener plate nodes.

[0058] like Figure 2 As shown, the present invention also provides a suspension system, including a frame 10, an axle 11, the aforementioned A-frame assembly, and a tie rod 12; the tie rod 12 is arranged parallel to the axle 11, and the tie rod 12 is hinged between the support on the axle 11 and the frame 10.

[0059] Further options, such as Figure 5As shown, the tie rod 12 is used to connect the right support 18 on the axle 11 and the frame 10. The two ends of the tie rod 12 are hinged. The hinged connection is achieved by a metal bearing, a spherical bearing, or a flexible bearing, i.e., bearing 19 in the attached figure.

[0060] It should be noted that an even number of tires 15 are arranged at both ends of the axle 11, and the tires 15 and the axle 11 are fixedly connected. The sleeve 1 is hinged to the frame 10, and the hinged connection is achieved through metal bearings, spherical bearings, or elastic bearings, i.e., bearing 14 in the attached figure. The connecting plate II 8 is fixedly connected to the axle 11, which can be achieved through peripheral bolts 13. That is, the frame 10 is connected to the left support and the right support 18 by bolts 13, and the left support and the right support 18 are connected to the connecting plate II 8 by bolts 13. The right support 18 has a crossbar connecting base structure.

[0061] like Figure 3 As shown, this utility model also provides a mining dump truck, including the aforementioned suspension system. The axle includes a front axle, a middle axle, and a rear axle; the front axle, frame, A-frame assembly, and tie rod form a front axle suspension system, the middle axle, frame, A-frame assembly, and tie rod form a middle axle suspension system, and the rear axle, frame, A-frame assembly, and tie rod form a rear axle suspension system; the middle axle and the rear axle are connected together by two symmetrically arranged balance beams 16 located on both sides of the frame.

[0062] It should be noted that, Figure 2 The application of a front axle structure, i.e., a single suspension system, is given. Figure 3 The structure of the middle and rear axles is given, that is, the two suspension systems are applied in series and connected by a balance beam.

[0063] Further options, such as Figure 4 As shown, a shock absorber 17 is provided between the axle 11 and the balance beam 16. The upper part of the shock absorber 17 is fixedly connected to the balance beam 16, and the lower part of the shock absorber 17 is fixedly connected to the axle 11.

[0064] In summary, this utility model provides an A-frame assembly, the first to apply seamless steel pipes to the A-frame of a mining dump truck, breaking through the limitations of traditional box girder structures. The main body of the steel pipe truss A-frame is made of high-strength seamless steel pipes bent into a triangular frame, forming a high-rigidity and lightweight skeleton. It features uniform wall thickness, simple process, minimal welding, small welding deformation, and low manufacturing cost. It is lightweight yet high-strength, with seamless steel pipes free of weld defects, exhibiting excellent fatigue resistance, low wind resistance coefficient, and enhanced reliability, meeting the requirements of green, energy-saving, and environmentally friendly development.

[0065] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0066] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0067] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An A-frame assembly, characterized in that, include: The A-frame is a steel pipe truss structure, and it is also a symmetrical structure about the center line of the A-frame. A triangular frame is provided in the A-frame. A sleeve is fixed at the front tip of the A-frame and is used to connect the hinged component to the vehicle frame. Connecting plate II is fixed to the rear two end faces of the A-frame, and is used to connect the fixing component to the axle.

2. The A-frame assembly according to claim 1, characterized in that, The A-frame includes: Connecting plate I, which is an arc-shaped plate, is used to form the front tip of the A-frame; Two main support pipes I are arranged symmetrically about the center line of connecting plate I, and the two main support pipes I are fixedly connected to connecting plate I; Main support tube II is fixedly connected between two main support tubes I near the connecting plate II, and the main support tube II and the two main support tubes I form a triangular frame; Two inclined support pipes are arranged symmetrically about the center line of connecting plate I. The two inclined support pipes are respectively connected between main support pipe II and the corresponding main support pipe I. The inclined support pipes, main support pipe I and main support pipe II form a triangular frame.

3. An A-frame assembly according to claim 2, characterized in that: The main support tube I has a horizontally extending inward insertion groove in the center area of ​​the end face facing the connecting plate I. The rear end of the connecting plate I is inserted into the insertion groove and then welded together.

4. An A-frame assembly according to claim 3, characterized in that: The openings between the end face of the main support pipe I and the top and bottom surfaces of the connecting plate I are sealed by welding a sealing plate with the same shape as the opening.

5. An A-frame assembly according to claim 2, characterized in that: The front end of the connecting plate I is provided with an arc-shaped groove, the sleeve is embedded in the arc-shaped groove, and the outer circumferential surface of the sleeve is completely fitted with the inner circumferential surface of the arc-shaped groove and then welded together. The axial center line of the sleeve is perpendicular to the transverse section of the connecting plate I.

6. An A-frame assembly according to claim 2, characterized in that: At least one triangular support rib plate I is fixedly connected at the connection point between the main support pipe I and the main support pipe II near the inclined support pipe; And / or, At least one triangular support rib plate II is fixedly connected to the connection point between the main support pipe I and the main support pipe II near the connecting plate II, and the triangular support rib plate II extends and is fixedly connected to the connecting plate II; and / or, At least one triangular support rib plate III is fixedly connected at the connection between the main support pipe I and the connecting plate II.

7. An A-frame assembly according to claim 2, characterized in that: The main support pipe I is a bent pipe that bends outward in its middle region; one end of the inclined support pipe is connected to the middle region of the main support pipe II in the length direction, and the other end of the inclined support pipe is connected to the upper middle region of the main support pipe I in the length direction. Both ends of the main support pipe II along its length are connected to the lower middle region of the corresponding main support pipe I.

8. A suspension system, characterized in that, include: The vehicle frame, the axle, and the A-frame assembly as described in any one of claims 1 to 7; A tie rod is arranged parallel to the axle and is hinged between the support on the axle and the frame.

9. A mining dump truck, characterized in that: Includes the suspension system as described in claim 8.

10. A mining dump truck according to claim 9, characterized in that: The axle includes a front axle, a middle axle, and a rear axle; the front axle, the frame, the A-frame assembly, and the tie rod form a front axle suspension system; the middle axle, the frame, the A-frame assembly, and the tie rod form a middle axle suspension system; and the rear axle, the frame, the A-frame assembly, and the tie rod form a rear axle suspension system. The middle axle and the rear axle are connected together by two symmetrically arranged balance beams located on both sides of the frame.

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