Rear A-shaped frame for dumper

Abstract

The utility model provides a rear A-shaped frame for a dumper, which relates to the field of A-shaped frames, and adopts the technical scheme that the rear A-shaped frame comprises a barrel body and a connecting piece, the connecting piece is arranged at the rear part of the barrel body, the barrel body is arranged on the connecting piece in an offset manner, and the offset direction of the barrel body is far away from a transmission shaft; the connecting piece comprises a first connecting part and a second connecting part, the rear end of the first connecting part and the rear end of the second connecting part are each provided with a mounting plate, the mounting plates are used for being connected with a rear axle, and the two mounting plates are symmetrically arranged relative to the vertical center face of the connecting piece. The transmission shaft can be avoided, the space of the chassis frame is reasonably utilized, interference between the rear A-shaped frame and the transmission shaft is avoided, and the layout difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of A-frames, and more particularly to a rear 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 left rear part and the right rear part of the A-frame are symmetrical structures. However, due to the offset setting of the drive shaft between the middle axle and the rear axle, the interference with the symmetrical structure of the rear A-frame makes the chassis layout more difficult. Utility Model Content

[0005] In order to solve the technical problem of interference between the rear A-frame and the drive shaft in the prior art, this utility model provides a rear A-frame for dump trucks that can avoid the drive shaft, make reasonable use of the chassis frame space, avoid interference between the rear A-frame and the drive shaft, and reduce the layout difficulty.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a rear A-frame for a dump truck, including a cylindrical body and a connecting member, wherein the connecting member is horizontally arranged at the rear of the cylindrical body, the cylindrical body is offset on the connecting member, and the offset direction of the cylindrical body is away from the drive shaft; a first connecting body and a second connecting body, wherein the rear ends of the first connecting body and the second connecting body are provided with mounting plates, the mounting plates are used to connect with the rear axle, and the two mounting plates are symmetrically arranged about the vertical center face of the connecting member.

[0007] By offsetting the cylindrical body, the center plane of the rear A-frame is no longer coplanar with the vertical center plane of the vehicle. This allows the connecting body 1 and connecting body 2 of the rear A-frame to deviate from the drive shaft and connect to the axle, thus avoiding interference between the connecting body 1 and connecting body 2 and the drive shaft.

[0008] Furthermore, the first connector is positioned close to the cylinder, and the area of ​​any cross-section of the first connector is not less than the area of ​​any cross-section of the second connector.

[0009] This invention increases the load-bearing strength of the side of the rear A-frame that experiences greater stress by increasing the cross-sectional area of ​​the connecting body, thus preventing deformation. At the same time, reducing the cross-sectional area of ​​the side with less stress also saves materials and achieves lightweighting.

[0010] Furthermore, along the direction from the cylinder to the mounting plate, the cross-sectional area of ​​the first connector and the second connector gradually increases.

[0011] This invention, by setting the first and second connectors as variable cross-section structures, avoids stress concentration in a local area, makes the stress distribution more uniform, improves the load-bearing capacity of the structure, and saves materials.

[0012] Furthermore, both the first connector and the second connector are box-shaped structures.

[0013] This invention achieves lightweight design by adopting a box structure.

[0014] Furthermore, both the first connecting body and the second connecting body include a first bent plate and a second bent plate connected to each other, and the first bent plate and the second bent plate form a rectangular box structure.

[0015] Furthermore, a reinforcing plate is provided between the mounting plate and the upper surface of the corresponding bending plate.

[0016] This invention enhances the support strength of the mounting plate by adding a reinforcing plate.

[0017] Furthermore, the thickness of the connector increases along the direction from the cylinder to the mounting plate.

[0018] This invention avoids stress concentration in the connector and improves its strength by setting the connector to a variable cross-section structure.

[0019] Furthermore, the connector is a box structure, comprising an upper bending plate, a lower panel, a first vertical plate, and a second vertical plate. The upper bending plate includes a first connecting part and a second connecting part. The first connecting part is trapezoidal, with its narrow end connected to the cylindrical body. The second connecting part extends obliquely downward from the first connecting part. Both the first connecting part and the second connecting part are connected to the second connecting part. The lower panel is trapezoidal, with its narrow end connected to the cylindrical body and its wide end connected to the second connecting part. The first vertical plate and the second vertical plate are disposed opposite each other between the upper bending plate and the lower panel.

[0020] This utility model adopts a box structure, which achieves lightweight design on the one hand, and on the other hand, the various components can support each other when under stress, resulting in higher strength and better adaptability to complex working conditions.

[0021] Furthermore, the wide end of the connecting portion one is inclined upwards.

[0022] This invention, by setting the first connecting part at an angle, can disperse and cancel the forces transmitted from the first connecting body and the second connecting body through the structure, thereby preventing the connecting body from deforming after bearing load for a long time and enhancing its strength.

[0023] Furthermore, both the first connector and the second connector have an L-shaped structure, and both the first connector and the second connector include a reinforcing part, which is connected to the second connector.

[0024] This invention enhances the connection strength between the L-shaped connector and the connector by using L-shaped connector 1 and connector 2, effectively preventing deformation and cracking under complex working conditions.

[0025] As can be seen from the above technical solutions, this utility model has the following advantages:

[0026] This utility model provides a rear A-frame for dump trucks. By offsetting the cylindrical body, the center plane of the rear A-frame is no longer coplanar with the vertical center plane of the vehicle. This allows the connecting bodies one and two of the rear A-frame to be deviated from the drive shaft when connecting to the axle, thus avoiding interference between them. Increasing the cross-sectional area of ​​connecting body one increases the load-bearing strength on the side of the rear A-frame with higher stress, preventing deformation. Simultaneously, reducing the cross-sectional area on the side with lower stress saves material and achieves weight reduction. By setting connecting bodies one and two as variable cross-section structures, stress concentration in a localized area is avoided, resulting in a more uniform stress distribution, improving the structural load-bearing capacity, and saving material. Materials; lightweight design achieved through box structure; enhanced support strength for mounting plate through reinforcing plates; stress concentration and improved strength achieved by using variable cross-section connectors; box structure achieves lightweight design while providing mutual support among components under load, resulting in higher strength and better adaptability to complex working conditions; inclined connection part one disperses and cancels the forces transmitted from connector one and connector two through structure, preventing deformation after prolonged load and enhancing strength; L-shaped connection parts one and two enhance the connection strength between connector one and connector two and the connector, effectively preventing deformation and cracking under complex working conditions. Attached Figure Description

[0027] 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.

[0028] Figure 1 This is a structural diagram illustrating a specific embodiment of the present invention. Figure 1 .

[0029] Figure 2 This is a structural diagram illustrating a specific embodiment of the present invention. Figure 2 .

[0030] Figure 3 This is a cross-sectional view of a specific embodiment of the present utility model.

[0031] Figure 4 This is a schematic diagram of the assembly structure of the axle and a specific embodiment of the present invention.

[0032] Figure 1 and Figure 4 All views are obtained by rotating the structure 180° in its installed state. Figure 2 and Figure 3 This is a view of the corresponding structure in its installed state.

[0033] In the figure, 1. cylinder; 2. connector; 201. connector one; 202. vertical plate; 203. lower panel; 204. connector two; 3. connector two; 4. connector one; 5. mounting plate; 6. reinforcement; 7. axle; 8. drive shaft. Detailed Implementation

[0034] 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.

[0035] like Figure 1 , Figure 2 and Figure 4 As shown in the figure, this specific embodiment provides a rear A-frame for a dump truck, including a cylinder 1, a connector 2, a first connector 4, and a second connector 3. The cylinder 1 is vertically arranged, and the connector 2 is horizontally arranged at the rear of the cylinder 1. The cylinder 1 is offset on the connector 2, that is, the vertical center plane of the cylinder 1 and the vertical center plane of the connector 2 are not coplanar. The cylinder 1 is offset in a direction away from the drive shaft 8. The rear ends of the first connector 201 and the second connector 204 are both provided with mounting plates 5. The mounting plates 5 are used to connect with the rear axle 7. The two mounting plates 5 are symmetrically arranged about the vertical center plane of the connector 2. In this document, the mounting plate 5 is located at the rear.

[0036] In this specific embodiment, by setting the cylinder 1 off-center, the center plane of the rear A-frame is no longer coplanar with the vertical center plane of the vehicle. This allows the connecting body 4 or connecting body 3 of the rear A-frame to deviate from the drive shaft 8 and connect to the axle 7, so that the connecting body 4 and connecting body 3 avoid the drive shaft 8 and prevent the connecting body 4 or connecting body 3 from interfering with the drive shaft 8.

[0037] like Figure 1 and Figure 2 As shown, due to the offset installation, connector 4 is positioned close to cylinder 1. The distances between connector 4 and connector 3 and cylinder 1 are different, and the force on connector 4 is greater than that on connector 3, resulting in a difference in the magnitude of the forces on the two. To ensure the load-bearing strength of the rear A-frame, the area of ​​any cross-section of connector 4 is not less than the area of ​​any cross-section of connector 3. Increasing the cross-sectional area of ​​connector 4 can increase the load-bearing strength on the side of the rear A-frame with greater force, avoiding deformation. At the same time, reducing the cross-sectional area on the side with less force can save materials and achieve weight reduction.

[0038] like Figure 1 and Figure 2 As shown, to further enhance the strength of the rear A-frame, the cross-sectional areas of connector 1 4 and connector 2 3 gradually increase along the direction from cylinder 1 to mounting plate 5. By setting connector 1 4 and connector 2 3 as variable cross-section structures, stress concentration in a local area can be avoided, making the stress distribution more uniform, improving the load-bearing capacity of the structure, and saving materials. Furthermore, to achieve lightweight design, connector 1 4 and connector 2 3 are both box structures. Specifically, connector 1 4 and connector 2 3 each include a connected bent plate 1 and bent plate 2. The bent plate 1 and bent plate 2 are welded together to form a rectangular box structure. The end faces of the two mounting plates 5 are welded to the end faces of bent plate 1 and bent plate 2, respectively. A reinforcing plate is welded between the mounting plate 5 and the upper plane of the corresponding bent plate 1. By setting the reinforcing plate, the support strength of the mounting plate 5 can be enhanced.

[0039] like Figure 3 As shown, to enhance the strength of connector 2, the thickness of connector 2 increases along the direction from cylinder 1 to mounting plate 5. This increased thickness results in a variable cross-section structure for connector 2, preventing stress concentration and improving strength. Furthermore, connector 2 is a box-like structure, comprising an upper bent plate, a lower panel 203, a first vertical plate 202, and a second vertical plate, all welded together. The upper bent plate includes a first connecting part 201 and a second connecting part 204. The first connecting part 201 is trapezoidal, and its narrow end is welded to the outer circumference of cylinder 1. The second connecting part 204 extends towards the outer circumference of the cylinder 1. The lower part 201 extends diagonally downwards, and both the first connector 4 and the second connector 3 are welded to the second connector 204. The lower panel 203 has a trapezoidal structure. The narrow end of the lower panel 203 is welded to the cylinder 1, and the wide end of the lower panel 203 is welded to the second connector 204. The first vertical plate 202 and the second vertical plate are welded between the upper bending plate and the lower panel 203. By setting the connector 2 as a box structure, a lightweight design is achieved on the one hand, and on the other hand, the upper bending plate, the lower panel 203, and other components can support each other under stress, making them less prone to deformation, stronger, and more adaptable to complex working conditions.

[0040] like Figure 3 As shown, preferably, the wide end of the connecting part 201 is inclined upward. By inclining the connecting part 201, the force transmitted from the connecting body 4 and the connecting body 3 can be dispersed and canceled through the structure, avoiding deformation of the connecting body after bearing load for a long time and enhancing its strength. In this specific embodiment, the angle between the connecting part 201 and the horizontal plane is 15°.

[0041] like Figure 3As shown, further, to enhance the connection strength between connector 1 4, connector 2 3 and connector 2 204, connector 1 4 and connector 2 3 both have an L-shaped structure. Connector 1 4 and connector 2 3 both include a reinforcing part 6, which is connected to connector 2 204. Specifically, the upper bending plate of connector 1 4 and connector 2 3 includes an upper plane and an outer surface, and the lower bending plate of connector 1 4 and connector 2 3 includes a lower plane and an inner surface. The upper plane and the lower surface have an L-shaped structure. The ends of the two upper planes connected to connector 2 204 and the ends of the two lower surfaces connected to connector 2 204 are provided with reinforcing parts 6. The reinforcing parts 6 in the upper and lower positions are arranged opposite each other.

[0042] As can be seen from the above specific embodiments, this utility model has the following beneficial effects:

[0043] 1. By offsetting the cylinder 1, the center plane of the rear A-frame is no longer coplanar with the vertical center plane of the vehicle. This allows the connecting body 1 4 and connecting body 2 3 of the rear A-frame to deviate from the drive shaft 8 and connect to the axle 7, thus avoiding interference between the connecting body 1 4 and connecting body 2 3 and the drive shaft 8.

[0044] 2. By increasing the cross-sectional area of ​​the connecting part 201, the load-bearing strength of the side of the rear A-frame with greater stress can be increased, thus avoiding deformation. At the same time, reducing the cross-sectional area of ​​the side with less stress can save materials and achieve lightweighting.

[0045] 3. By setting the first connector 4 and the second connector 3 as variable cross-section structures, stress concentration in a local area can be avoided, the stress distribution can be made more uniform, the load-bearing capacity of the structure can be improved, and materials can be saved.

[0046] 4. Lightweight design is achieved by adopting a box structure; the support strength of the mounting plate 5 can be enhanced by setting a reinforcing plate;

[0047] 5. By setting connector 2 as a variable cross-section structure, stress concentration in connector 2 can be avoided, thus improving its strength;

[0048] 6. By adopting a box structure, lightweight design is achieved on the one hand, and the components can support each other when under stress, resulting in higher strength and better adaptability to complex working conditions;

[0049] 7. By tilting the connection part 201, the force transmitted from the connector 4 and the connector 3 can be dispersed and canceled through the structure, avoiding deformation of the connector after bearing load for a long time and enhancing its strength.

[0050] 8. By adopting L-shaped connector 1 4 and connector 2 3, the strength of the connection between connector 1 and connector 2 and connector 2 can be enhanced, effectively avoiding deformation and cracking under complex working conditions.

[0051] 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 rear A-frame for a dump truck comprising a cylinder (1), characterized in that, Also include, The connecting piece (2) is arranged horizontally at the rear of the cylinder (1), the cylinder (1) is offset on the connecting piece (2), and the offset direction of the cylinder (1) is away from the transmission shaft; The rear end of the connecting body one (4) and the connecting body two (3) is provided with a mounting plate (5), the mounting plate (5) is used for connecting with the rear axle, and the two mounting plates (5) are symmetrically arranged about the vertical center of the connecting piece (2).

2. The rear A-frame for a dump truck of claim 1, wherein, The connecting body one (4) is arranged close to the cylinder (1), and the cross-sectional area of the connecting body one (4) at any position is not less than the cross-sectional area of the connecting body two (3) at any position.

3. The rear A-frame for a dump truck of claim 2, wherein, In the direction from the cylinder (1) to the mounting plate (5), the cross-sectional area of the connecting body one (4) and the connecting body two (3) gradually increases.

4. The rear A-frame for a dump truck of any of claims 1-3, wherein, The connecting body one (4) and the connecting body two (3) are both box structures.

5. The rear A-frame for a dump truck of claim 4, wherein, The connecting body one (4) and the connecting body two (3) both include connected bending plate one and bending plate two, and the bending plate one and the bending plate two form a rectangular box structure.

6. The rear A-frame for a dump truck of claim 5, wherein, The mounting plate (5) and the upper plane of the corresponding bending plate one are provided with a reinforcing plate.

7. The rear A-frame for a dump truck of claim 4, wherein, In the direction from the cylinder (1) to the mounting plate (5), the thickness of the connecting piece (2) increases.

8. The rear A-frame for a dump truck of claim 7, wherein, The connecting piece (2) is a box structure, the connecting piece (2) includes an upper bending plate, a lower panel (203), a vertical plate one (202) and a vertical plate two, the upper bending plate includes a connecting part one (201) and a connecting part two (204), the connecting part one (201) is a trapezoidal structure, the narrow end of the connecting part one (201) is connected with the cylinder (1), the connecting part two (204) extends to the oblique lower side of the connecting part one (201), the connecting body one (4) and the connecting body two (3) are connected with the connecting part two (204), the lower panel (203) is a trapezoidal structure, the narrow end of the lower panel (203) is connected with the cylinder (1), and the wide end of the lower panel (203) is connected with the connecting part two (204), the vertical plate one (202) and the vertical plate two are arranged opposite to each other between the upper bending plate and the lower panel (203).

9. The rear A-frame for a dump truck of claim 8, wherein, The wide end of the connecting part one (201) is arranged upwardly inclined.

10. The rear A-frame for a dump truck of claim 9, wherein, The connecting body one (4) and the connecting body two (3) are both L-shaped structures, and the connecting body one (4) and the connecting body two (3) both include a reinforcing part (6), and the reinforcing part (6) is connected with the connecting part two (204).

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