Front A-shaped frame for dumper

Abstract

The utility model provides a front A-shaped frame for a dumper, which relates to the field of A-shaped frames, and adopts the technical scheme that the front A-shaped frame comprises a barrel body, a connecting body I and a connecting body II, the barrel body is vertically arranged, the connecting body I and the connecting body II are both connected with the barrel body and are symmetrically arranged in a V shape, and the connecting body I and the connecting body II are connected with the barrel body. The first connecting body and the second connecting body each comprise a first connecting part and a second connecting part, the rear ends of the first connecting parts and the rear ends of the second connecting parts extend towards the oblique rear portion of the barrel, and the included angle between the first connecting parts and the second connecting parts is an obtuse angle. The strength of the front A-shaped frame can be enhanced, the front A-shaped frame adapts to the load working condition of the dumper, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of A-frames, and more particularly to a front A-frame for dump trucks. Background Technology

[0002] Articulated dump trucks generally operate in harsher conditions and environments than rigid dump trucks, often working on rainy and muddy construction sites. Currently, the front axles of articulated dump trucks are generally divided into two types: rigid axles and independent suspension axles, which use an A-frame structure. In comparison, independent suspension axles have better overall vibration reduction performance.

[0003] In the prior art, Chinese utility model patent with authorization announcement number CN213735185U provides a lightweight A-frame, including a sleeve, a front part of the A-frame, a left rear part of the A-frame, and a right rear part of the A-frame; the sleeve is connected to the front part of the A-frame; the left rear part and the right rear part of the A-frame are symmetrical structures, and their heads are connected to the front part of the A-frame; the front part of the A-frame includes an upper bent cover plate and a lower buckle plate; the upper bent cover plate and the lower buckle plate are fastened together to... The sleeves are spliced ​​to form a sealed box-shaped structure; the upper bent cover plate is generally trapezoidal, with a semi-circular groove at the head and a bent tail; the lower buckle plate is generally trapezoidal, with a semi-circular groove at the head and rounded corners and bevels at the tail that match the upper bent cover plate, and bent sides on both sides; this A-frame is generally triangular, with high overall structural strength, effectively transmitting longitudinal driving force and braking force, while also transmitting some lateral impact force.

[0004] In the above technical solutions, the sleeve is directly connected to the frame via a ball joint, which gives the front A-frame a certain degree of rotational freedom when turning. However, due to the complex working conditions of articulated dump trucks, the front A-frame is subjected to dynamic loads in multiple directions. In the existing solutions, the left and right rear parts of the A-frame are straight structures with low strength. When the front A-frame swings left and right, it causes bending and torsion on the left and right rear parts of the A-frame, making them prone to deformation and cracking, which affects the service life of the front A-frame. Utility Model Content

[0005] In order to solve the technical problem of low strength of the front A-frame in the prior art, this utility model provides a front A-frame for dump trucks, which can enhance the strength of the front A-frame, adapt to the load conditions of dump trucks, and extend the service life.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a front A-type frame for dump trucks, including a cylindrical body, the cylindrical body being vertically arranged, and a connecting body one and a connecting body two. The connecting body one and the connecting body two are both connected to the cylindrical body and are arranged symmetrically in a V-shape. The connecting body one and the connecting body two each include a connecting part one and a connecting part two. The rear ends of the connecting part one and the connecting part two extend obliquely to the rear of the cylindrical body, and the included angle between the connecting part one and the connecting part two is an obtuse angle.

[0007] This invention, by setting the first and second connecting bodies into a bent structure, can effectively disperse the force and change the force transmission path compared with the straight structure in the prior art. Under the same working conditions, the A-frame with the bent structure has higher strength and longer service life.

[0008] Furthermore, the angle between the first connecting part and the second connecting part is α, where 150°≤α≤160°.

[0009] Furthermore, the first connecting part and the second connecting part have a circular arc transition.

[0010] This invention avoids stress concentration between the first and second connecting parts by using a rounded transition.

[0011] Furthermore, both the first connecting part and the second connecting part are box-shaped structures.

[0012] This utility model achieves a lightweight design for the front A-frame by adopting a box structure.

[0013] Furthermore, both the first connecting part and the second connecting part include an upper plate, a lower plate, an outer vertical plate, an inner vertical plate, and a mounting plate that are welded together. The upper plate, the lower plate, the outer vertical plate, and the inner vertical plate are all made of bent plates. The mounting plate is located at the rear end and has mounting holes.

[0014] Furthermore, a reinforcing rib is provided between the mounting plate and the corresponding lower plate.

[0015] This utility model enhances the strength of connection part one and connection part two by setting reinforcing ribs.

[0016] The widths of the upper plate and the lower plate increase from front to back, and the distance between the upper plate and the lower plate also increases from front to back.

[0017] This invention changes the width of the upper and lower plates to make the first and second connecting parts have variable cross-sections, which avoids stress concentration in a local area, makes the stress distribution more uniform, improves the load-bearing capacity of the structure, and saves materials.

[0018] Furthermore, the outer panel is provided with lifting lugs, and the inner panel is provided with pipe supports.

[0019] Furthermore, two transition portions are symmetrically arranged on the outer circumference of the cylinder. The transition portions and the cylinder are integrally cast. The transition portions are welded to the corresponding connecting portions. The extension direction of the transition portions is the same as the extension direction of the connecting portions.

[0020] This invention integrates two transition sections on the cylinder body, transferring the connection points of connecting section one and connecting section two to the cylinder body from the outer circumferential surface to the transition section, thereby avoiding stress concentration and enhancing connection strength.

[0021] Furthermore, a reinforcing plate is horizontally arranged between the two transition sections.

[0022] This invention enhances the strength between the two transition sections by adding a reinforcing plate.

[0023] As can be seen from the above technical solutions, this utility model has the following advantages:

[0024] This utility model provides a front A-frame for dump trucks. By designing connecting body one and connecting body two as a bent structure, compared with the straight structure in the prior art, it can effectively disperse the force and change the force transmission path. Under the same working conditions, the A-frame with the bent structure has higher strength and longer service life. The arc transition avoids stress concentration at connecting parts one and two. The box structure achieves a lightweight design for the front A-frame. The strength of connecting parts one and two is enhanced by adding reinforcing ribs. By changing the width of the upper and lower plates and the distance between them, connecting parts one and two are designed as variable cross-sections, avoiding stress concentration in a local area, improving the load-bearing capacity of the structure, making the stress distribution more uniform, and saving materials. By integrating two transition parts on the cylinder, the connection position of connecting parts one and two to the cylinder is transferred from the outer circumference to the transition part, avoiding stress concentration and enhancing the connection strength. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0027] Figure 2This is a schematic diagram of the assembly structure of the axle and a specific embodiment of the present invention.

[0028] In the figure, 1. Cylinder body; 2. Connecting part one; 3. Connecting part two; 4. Mounting plate; 5. Lifting lug; 6. Pipe support; 7. Transition part; 8. Reinforcing rib plate; 9. Inner vertical plate; 10. Outer vertical plate; 11. Reinforcing plate. Detailed Implementation

[0029] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0030] like Figure 1 As shown in the figure, this specific embodiment provides a front A-frame for a dump truck, including a cylindrical body 1, which is vertically arranged, and also includes a connecting body one and a connecting body two. Both connecting bodies one and two are connected to the cylindrical body 1 and are arranged symmetrically in a V-shape. Both connecting bodies one and two include a connecting part one 2 and a connecting part two 3. The rear ends of both connecting parts one 2 and connecting parts two 3 extend obliquely to the rear of the cylindrical body 1. The included angle between connecting parts one 2 and connecting parts two 3 is an obtuse angle, and the angle between connecting parts one 2 and connecting parts two 3 is α, where 150°≤α≤160°. In this specific embodiment, α is 153°. In this text, the connection position between the front A-frame and the axle is referred to as the rear.

[0031] This specific embodiment sets the first and second connecting bodies into a bent structure, which can effectively disperse the force and change the force transmission path compared with the straight structure in the prior art. Under the same working conditions, the A-frame with the bent structure has higher strength and longer service life.

[0032] To avoid stress concentration, the connection part 12 and the connection part 23 are connected by a rounded transition.

[0033] like Figure 1 and Figure 2As shown in this specific embodiment, for ease of manufacturing and to ensure strength, both connecting part 2 and connecting part 3 are welded box structures. Specifically, both connecting part 2 and connecting part 3 include a welded upper plate, a lower plate, an outer vertical plate 10, an inner vertical plate 9, and a mounting plate 4. The upper plate, lower plate, outer vertical plate 10, and inner vertical plate 9 are all made of bent plates. The mounting plate 4 is located at the rear end and is used to connect with the axle. The mounting plate 4 has mounting holes. Furthermore, a reinforcing rib 8 is provided between the mounting plate 4 and the corresponding lower plate. The reinforcing rib 8 has a right-angled triangular structure. The wide end of the reinforcing rib 8 is connected to the mounting plate 4. The connection position of the reinforcing rib 8 and the mounting plate 4 is close to the connection between the mounting plate 4 and the inner vertical plate 9. The narrow end of the reinforcing rib 8 is inclined towards the outer vertical plate 10. With this arrangement, the reinforcing rib 8 can play its reinforcing role and enhance strength.

[0034] like Figure 1 and Figure 2 As shown, in order to further optimize the structure, in this specific embodiment, the width of the upper plate and the lower plate increases from front to back, and the distance between the upper plate and the lower plate also increases from front to back. By changing the width of the upper plate and the lower plate and the distance between the upper plate and the lower plate, the connecting part 1 2 and the connecting part 2 3 are designed with variable cross sections, which avoids stress concentration in a certain local area, makes the stress distribution more uniform, improves the load-bearing capacity of the structure, and saves materials.

[0035] like Figure 1 and Figure 2 As shown, to enhance the connection strength between connecting part 1 2, connecting part 2 3 and cylinder 1, two transition parts 7 are symmetrically arranged on the outer circumference of cylinder 1. The transition parts 7 and cylinder 1 are integrally cast structures. The transition parts 7 are welded to the corresponding connecting parts 1 2. The extension direction of the transition parts 7 is the same as the extension direction of the connecting parts 1 2. With this arrangement, the connection position of connecting parts 1 2 and connecting part 2 3 to cylinder 1 is shifted backward. On the one hand, this increases the contact area and improves the weld strength. On the other hand, it makes the overall structure of cylinder 1 and connecting parts 1 2 and connecting part 2 3 a triangular structure, which can evenly distribute the externally applied force to all parts and greatly reduce the local stress concentration. Furthermore, a reinforcing plate 11 is horizontally arranged between the two transition parts 7. There are two reinforcing plates 11 arranged vertically opposite each other.

[0036] Furthermore, to facilitate disassembly and assembly, the outer upright plate 10 is equipped with lifting lugs 5; to optimize the utilization of the frame space, the inner upright plate 9 is equipped with pipe supports 6 for fixing the corresponding pipes.

[0037] As can be seen from the above specific embodiments, this utility model has the following beneficial effects:

[0038] 1. By setting the connecting body one and connecting body two as a bent structure, compared with the straight structure in the prior art, the force can be effectively dispersed and the force transmission path can be changed. Under the same working conditions, the A-frame with the bent structure has higher strength and longer service life.

[0039] 2. Avoid stress concentration at connection part 1 (2) and connection part 2 (3) by using a rounded transition;

[0040] 3. A lightweight design for the front A-frame is achieved by adopting a box-type structure;

[0041] 4. The strength of connection part 1 2 and connection part 2 3 is enhanced by setting reinforcing ribs 8;

[0042] 5. By changing the width of the upper and lower plates and the spacing between them, the connection part 1 2 and the connection part 2 3 are designed with variable cross sections, which avoids stress concentration in a certain local area, improves the load-bearing capacity of the structure, makes the stress distribution more uniform, and saves materials.

[0043] 6. By integrating two transition sections 7 on the cylinder 1, the connection positions of connecting section 1 2 and connecting section 2 3 with the cylinder 1 are transferred from the outer circumferential surface to the transition section 7, thus avoiding stress concentration and enhancing the connection strength.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A front A-frame for a dump truck, comprising a cylinder (1) which is arranged vertically, characterized in that, Also include connector one and connector two, the connector one and the connector two are connected with the barrel (1) and are V-shaped symmetry, the connector one and the connector two include connection part one (2) and connection part two (3), the rear end of connection part one (2) and connection part two (3) extends to the oblique rear of the barrel (1), the included angle between connection part one (2) and connection part two (3) is obtuse.

2. The front A-frame for a self-unloading truck of claim 1, wherein, The angle between the connection part one (2) and the connection part two (3) is a, 150°≤a≤160°.

3. The front A-frame for a self-unloading trailer as set forth in claim 2, wherein, The connection part one (2) and the connection part two (3) are circular arc transition.

4. The front A-frame for a dump truck of claim 3, wherein, The connection part one (2) and the connection part two (3) are both box structures.

5. The front A-frame for a dump truck of claim 4, wherein, The connection part one (2) and the connection part two (3) each include a welded upper plate, a lower plate, an outer vertical plate (10), an inner vertical plate (9) and a mounting plate (4), the upper plate, the lower plate, the outer vertical plate (10) and the inner vertical plate (9) are all made of bent plates, the mounting plate (4) is arranged at the rear end, and the mounting plate (4) is provided with mounting holes.

6. The front A-frame for a dump truck of claim 5, wherein, The mounting plate (4) and the corresponding lower plate are provided with a reinforcing rib plate (8).

7. The front A-frame for a dump truck of claim 6, wherein, The width of the upper plate and the lower plate increases from front to back, and the distance between the upper plate and the lower plate increases from front to back.

8. The front A-frame for a dump truck of claim 7, wherein, The outer vertical plate (10) is provided with an ear (5), and the inner vertical plate (9) is provided with a pipeline support (6).

9. The front A-frame for a dump truck of claim 1, wherein, The outer circumferential surface of the barrel (1) is symmetrically provided with two transition portions (7), the transition portion (7) and the barrel (1) are a cast integrated structure, the transition portion (7) and the corresponding connection part one (2) are welded, and the extension direction of the transition portion (7) is the same as that of the connection part one (2).

10. The front A-frame for a dump truck of claim 9, wherein, Two transition portions (7) are horizontally provided with a reinforcing plate (11).

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