Tail beam structure and chassis assembly

Abstract

The utility model relates to the technical field of vehicles, in particular to a tail beam structure and a chassis assembly.The tail beam structure comprises a rear tail cross beam and two rear tail beam supporting seats, each rear tail beam supporting seat comprises a box-shaped body and a supporting sleeve, and the two box-shaped bodies are arranged at intervals in the first horizontal direction; through holes are formed in the two opposite side walls, in the first horizontal direction, of the two box-shaped bodies respectively, the two supporting sleeves are inserted into the two box-shaped bodies through the through holes respectively, one ends, in the second horizontal direction, of the two box-shaped bodies are used for being connected with the two longitudinal beams in an inserted mode respectively and fixed relative to the two longitudinal beams, and the rear tail beam supporting base is an integrally-formed casting part. The two ends of the rear tail cross beam are connected with the two supporting sleeves in an inserted mode respectively and fixed relatively. The first horizontal direction is perpendicular to the second horizontal direction. Due to the fact that the two rear tail beam supporting seats are manufactured through the casting technology, a large number of welding beads are reduced, the deformation problem of the rear tail beam supporting seats in the manufacturing process is effectively solved, and the strength of the rear tail beam supporting seats is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a tail beam structure and a chassis assembly. Background Art

[0002] Engineering vehicles are specialized transportation equipment for open-pit mining. Low cost, heavy load, and high work efficiency have always been the goals pursued by customers. Production cost and efficiency are the key points of mine car design. The frame carries the mass of the vehicle and the cargo, causing the frame to bear gravity, impact load, torsion load, and alternating load at the same time. Therefore, the frame is required to have good rigidity, strength, and fatigue resistance.

[0003] The frame of a mining dump truck is composed of a pair of longitudinal beams and multiple cross beams, which together form a closed structure of the frame. The tail beam structure is one of the cross beams, which is located at the rear of the frame, connecting the left and right longitudinal beams and closing the entire frame. Its upper part is hinged with the cargo compartment as the rotation center of the cargo compartment, and its lower part is connected to the rear axle vertically and horizontally with two rear suspension cylinders and a tie rod. It not only supports the cargo compartment, but also transmits the force of the frame to the rear axle through the rear suspension cylinder. It is the most complex component of the vehicle. Therefore, the tail beam structure has a great impact on the reliability, durability and driving safety of mining dump trucks.

[0004] At present, the tail beam structure of the dump truck frame is generally welded by steel plate and seamless torsion steel pipe. Due to the large number of welds, welding deformation is prone to occur during the manufacturing process. And as the load capacity of dump trucks is getting larger and larger, weld cracking often occurs during use. Utility Model Content

[0005] The purpose of the utility model is to provide a tail beam structure and a chassis assembly to solve the problem that the tail beam structure welded from steel plates in the related art has many welds and is prone to welding deformation during the manufacturing process. In addition, as the load capacity of current dump trucks is increasing, weld cracking often occurs during use.

[0006] On the one hand, the utility model provides a tail beam structure, which includes:

[0007] Two rear tail beam support seats, the rear tail beam support seats include a box-shaped body and a support sleeve, the two box-shaped bodies are spaced apart along a first horizontal direction, two side walls of the two box-shaped bodies opposite to each other along the first horizontal direction are respectively provided with through holes, the two support sleeves are respectively inserted into the two box-shaped bodies through the through holes, one end of the two box-shaped bodies along the second horizontal direction is respectively used to be inserted into and relatively fixed with two longitudinal beams, and the rear tail beam support seat is an integrally formed casting;

[0008] A rear cross beam, the two ends of which are respectively plugged into the two support sleeves and relatively fixed;

[0009] The first horizontal direction is perpendicular to the second horizontal direction.

[0010] As a preferred technical solution for the tail beam structure, the peripheral wall of the support sleeve is fixedly connected to the side wall of the box-type body provided with a through hole, and the end of the support sleeve extending into the box-type body is fixedly connected to the side wall opposite to the box-type body along the first horizontal direction.

[0011] As a preferred technical solution for the tail beam structure, the rear tail beam support seat also includes a transverse rib plate, which is arranged inside the box-type body, and the transverse rib plate is fixedly connected to the two side walls of the corresponding box-type body along the first horizontal direction, and the transverse rib plate is fixedly connected to the support sleeve.

[0012] As a preferred technical solution for the tail beam structure, the transverse rib plate extends along the second horizontal direction to the insertion point between the box-type body and the longitudinal beam.

[0013] As a preferred technical solution for the tail beam structure, an inserting portion is protrudingly provided at one end of the box-shaped body along the second horizontal direction, and the inserting portion is used to be inserted into the corresponding longitudinal beam.

[0014] As a preferred technical solution for the tail beam structure, two reinforcing plates are protruding from one end of the box-shaped body along the second horizontal direction, and the two reinforcing plates are spaced apart in the vertical direction. The plug-in portion is used to be inserted into the longitudinal beam so that the two reinforcing plates are respectively used to fit with the two side walls of the longitudinal beam along the vertical direction, and the two reinforcing plates are respectively used to be fixedly connected with the two side walls of the longitudinal beam along the vertical direction.

[0015] As a preferred technical solution for the tail beam structure, the connection between the box-shaped body and the corresponding support sleeve is an arc transition.

[0016] As a preferred technical solution for the tail beam structure, the other end of the box-shaped body along the second horizontal direction and the area away from the ground in the vertical direction is set as a solid part, and the solid part is provided with a through shaft hole along the first horizontal direction.

[0017] As a preferred technical solution for the tail beam structure, along the vertical direction, the axis of the through-axis hole is higher than the longitudinal beam.

[0018] On the other hand, the utility model provides a chassis assembly, including two longitudinal beams spaced apart and arranged in parallel along the first horizontal direction and a tail beam structure in any of the above-mentioned schemes, wherein one end of the two box-shaped bodies along the second horizontal direction is respectively plugged into and relatively fixed to one end of the two longitudinal beams.

[0019] The beneficial effects of the utility model are:

[0020] The utility model provides a tail beam structure and a chassis assembly, the tail beam structure comprises a rear tail beam and two rear tail beam support seats, the rear tail beam support seat comprises a box-type body and a support sleeve, the two box-type bodies are arranged at intervals along a first horizontal direction, the two side walls of the two box-type bodies opposite to each other along the first horizontal direction are respectively provided with through holes, the two support sleeves are respectively inserted into the two box-type bodies through the through holes, one end of the two box-type bodies along the second horizontal direction is respectively used to be plugged with two longitudinal beams and relatively fixed, the rear tail beam support seat is an integrally formed casting; the two ends of the rear tail beam are respectively plugged with the two support sleeves and relatively fixed; the first horizontal direction and the second horizontal direction are perpendicular. The tail beam structure is installed on the chassis assembly, because the two rear tail beam support seats are made by casting technology, a large number of welds are reduced, thereby effectively improving the deformation problem of the rear tail beam support seat during the manufacturing process, and at the same time, the support sleeve is inserted into the box-type body, and this arrangement increases the contact area between the support sleeve and the box-type body, avoiding stress concentration between the support sleeve and the box-type body. The two ends of the rear tail beam are respectively plugged into two support sleeves and relatively fixed to achieve the relative fixation of the rear tail beam and the two rear tail beam support seats. Therefore, the tail beam structure improves the deformation and insufficient support force caused by welding by reducing the weld bead, and improves the strength of the rear tail beam support seat by inserting the support sleeve into the box-shaped body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the assembly of the tail beam structure and the longitudinal beam in the embodiment of the utility model;

[0022] Figure 2 This is a structural schematic diagram of the tail beam structure in an embodiment of the utility model;

[0023] Figure 3 A cross-sectional view of the tail beam structure in an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the rear tail beam support seat in the embodiment of the utility model;

[0025] Figure 5 It is a schematic structural diagram of the rear tail beam support seat in an embodiment of the utility model.

[0026] In the figure:

[0027] X, first horizontal direction; Y, second horizontal direction; Z, vertical direction;

[0028] 100, longitudinal beam;

[0029] 1. rear tail beam support seat; 11. box-shaped body; 111. plug-in part; 112. reinforcement plate; 113. solid part; 1131. through shaft hole; 12. support sleeve; 121. through hole; 13. transverse rib plate;

[0030] 2. Rear cross beam. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] like Figure 1 to Figure 5 As shown, the present embodiment provides a tail beam structure, which includes a rear tail cross beam 2 and two rear tail beam support seats 1, the rear tail beam support seat 1 includes a box-type body 11 and a support sleeve 12, the two box-type bodies 11 are arranged at intervals along the first horizontal direction X, and the two side walls of the two box-type bodies 11 opposite to each other along the first horizontal direction X are respectively provided with through holes 121, the two support sleeves 12 are respectively inserted into the two box-type bodies 11 through the through holes 121, and one end of the two box-type bodies 11 along the second horizontal direction Y is respectively used to be plugged with the two longitudinal beams 100 and relatively fixed, and the rear tail beam support seat 1 is an integrally formed casting; the two ends of the rear tail cross beam 2 are respectively plugged with the two support sleeves 12 and relatively fixed; the first horizontal direction X and the second horizontal direction Y are perpendicular. The tail beam structure is installed on the chassis assembly. Since the two rear tail beam support seats 1 are made by casting technology, a large number of welds are reduced, thereby effectively improving the deformation problem of the rear tail beam support seat 1 during the manufacturing process. At the same time, the support sleeve 12 is inserted into the box-type body 11. This setting increases the contact area between the support sleeve 12 and the box-type body 11, and avoids stress concentration between the support sleeve 12 and the box-type body 11. The two ends of the rear tail cross beam 2 are respectively plugged into the two support sleeves 12 and relatively fixed to achieve relative fixation of the rear tail cross beam 2 and the two rear tail beam support seats 1. Therefore, the tail beam structure improves the deformation and insufficient support force caused by welding by reducing welds, and improves the strength of the rear tail beam support seat 1 by inserting the support sleeve 12 into the box-type body 11.

[0036] Specifically, the first horizontal direction X is the axial direction of the rear tail beam 2 , and the second horizontal direction Y is the length direction of the longitudinal beam 100 .

[0037] Optionally, the peripheral wall of the support sleeve 12 is fixedly connected to the side wall of the box-shaped body 11 provided with the through hole 121, and the end of the support sleeve 12 extending into the box-shaped body 11 is fixedly connected to the side wall opposite to the box-shaped body 11 along the first horizontal direction X. In this embodiment, the above arrangement increases the fixing surface of the support sleeve 12 and the box-shaped body 11, so as to avoid stress concentration of the box-shaped body 11 and improve the overall strength of the rear tail beam support seat 1.

[0038] Optionally, the rear tail beam support seat 1 also includes a transverse rib plate 13, which is arranged inside the box-shaped body 11, and the transverse rib plate 13 is fixedly connected to the two side walls of the corresponding box-shaped body 11 along the first horizontal direction X, and the transverse rib plate 13 is fixedly connected to the support sleeve 12. In this embodiment, the transverse rib plate 13 can improve the overall strength of the box-shaped body 11, which is conducive to the installation of different equipment on the outer side wall of the box-shaped body 11, such as oil and gas springs, cargo box flip shafts, rear protection, stone ejectors, etc. It can also prevent the box-shaped body 11 from being deformed. At the same time, relative displacement between the box-shaped body 11 and the support sleeve 12 can also be prevented.

[0039] Optionally, the transverse rib plate 13 extends along the second horizontal direction Y to the connection between the box-shaped body 11 and the longitudinal beam 100. In this embodiment, this arrangement can enhance the strength of the box-shaped body 11 at the connection with the longitudinal beam 100, thereby preventing it from deforming and failing to be connected and fixed with the corresponding longitudinal beam 100, thereby affecting the fixing stability of the box-shaped body 11 and the longitudinal beam 100.

[0040] Optionally, a plug-in portion 111 is protruded from one end of the box-shaped body 11 along the second horizontal direction Y, and the plug-in portion 111 is used to be inserted into the corresponding longitudinal beam 100. In this embodiment, when the plug-in portion 111 is inserted into the corresponding longitudinal beam 100, the box-shaped body 11 and the longitudinal beam 100 are welded, and the plug-in portion 111 prevents the internal contact of the welding from being unrealistic, improves the welding strength, and prolongs the service life of the chassis assembly.

[0041] Optionally, two reinforcing plates 112 are convexly provided at one end of the box-shaped body 11 along the second horizontal direction Y, and the two reinforcing plates 112 are spaced apart along the vertical direction Z. The plug-in portion 111 is used to be inserted into the longitudinal beam 100, so that the two reinforcing plates 112 are respectively used to fit with the two side walls of the longitudinal beam 100 along the vertical direction Z, and the two reinforcing plates 112 are respectively used to be fixedly connected with the two side walls of the longitudinal beam 100 along the vertical direction Z. In this embodiment, when the vehicle is driving, the chassis assembly will be subjected to a force along the vertical direction Z, so it is necessary to strengthen the connection between the box-shaped body 11 and the longitudinal beam 100 along the vertical direction Z. Therefore, when the plug-in portion 111 is inserted into the longitudinal beam 100, the two reinforcing plates 112 are respectively fitted with and fixedly connected to the two side walls of the longitudinal beam 100 along the vertical direction Z, so as to enhance the reinforcement of the connection between the box-shaped body 11 and the longitudinal beam 100 along the vertical direction Z.

[0042] Optionally, the connection between the box-shaped body 11 and the corresponding support sleeve 12 is arc-shaped. In this embodiment, this setting can improve the connection strength between the box-shaped body 11 and the corresponding support sleeve 12, and avoid stress concentration between the box-shaped body 11 and the corresponding support sleeve 12 at the connection position.

[0043] Optionally, the area of ​​the box-shaped body 11 at the other end along the second horizontal direction Y and away from the ground along the vertical direction Z is set as a solid part 113, and the solid part 113 is provided with a through-axis hole 1131 along the first horizontal direction X. In this embodiment, the rotating shaft of the bucket is passed through the through-axis hole 1131 to realize the rotation of the bucket relative to the tail beam structure. During this process, the area of ​​the box-shaped body 11 near the through-axis hole 1131 is subjected to a large load. In order to prevent the area of ​​the box-shaped body 11 near the through-axis hole 1131 from being deformed or damaged, the area of ​​the box-shaped body 11 near the through-axis hole 1131 is set as the solid part 113 to improve the strength of the area.

[0044] Optionally, along the vertical direction Z, the axis of the through-axis hole 1131 is higher than the longitudinal beam 100. In this embodiment, the above arrangement can shorten the rollover radius of the bucket and prevent the center of mass from tilting too far backwards and causing the front wheels to hang in the air.

[0045] This embodiment also provides a chassis assembly, including two longitudinal beams 100 spaced apart and arranged in parallel along a first horizontal direction X and the tail beam structure in the above scheme, and one end of the two box-shaped bodies 11 along a second horizontal direction Y is respectively plugged into one end of the two longitudinal beams 100 and relatively fixed.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Tail beam structure, characterized in that: include: Two rear tail beam support seats (1), the rear tail beam support seats (1) comprising a box-shaped body (11) and a support sleeve (12), the two box-shaped bodies (11) are arranged at intervals along a first horizontal direction (X), two side walls of the two box-shaped bodies (11) opposite to each other along the first horizontal direction (X) are respectively provided with through holes (121), the two support sleeves (12) are respectively inserted into the two box-shaped bodies (11) through the through holes (121), one end of the two box-shaped bodies (11) along a second horizontal direction (Y) is respectively used for plugging with two longitudinal beams (100) and relatively fixing, and the rear tail beam support seat (1) is an integrally formed casting; A rear cross beam (2), wherein two ends of the rear cross beam (2) are respectively plugged into the two support sleeves (12) and relatively fixed; The first horizontal direction (X) and the second horizontal direction (Y) are perpendicular.

2. The tail beam structure according to claim 1, characterized in that: The peripheral wall of the support sleeve (12) is fixedly connected to the side wall of the box-shaped body (11) provided with a through hole (121), and the end of the support sleeve (12) extending into the box-shaped body (11) is fixedly connected to the side wall opposite to the box-shaped body (11) along the first horizontal direction (X).

3. The tail beam structure according to claim 1, characterized in that: The rear tail beam support seat (1) also includes a transverse rib plate (13), which is arranged inside the box-shaped body (11), and the transverse rib plate (13) is fixedly connected to the two side walls of the corresponding box-shaped body (11) along the first horizontal direction (X), and the transverse rib plate (13) is fixedly connected to the support sleeve (12).

4. The tail beam structure according to claim 3, characterized in that: The transverse rib plate (13) extends along the second horizontal direction (Y) to the insertion point between the box-shaped body (11) and the longitudinal beam (100).

5. The tail beam structure according to claim 1, characterized in that: An inserting portion (111) is protrudingly provided at one end of the box-shaped body (11) along the second horizontal direction (Y), and the inserting portion (111) is used to be inserted into the corresponding longitudinal beam (100).

6. The tail beam structure according to claim 5, characterized in that: Two reinforcing plates (112) are protruded from one end of the box-shaped body (11) along the second horizontal direction (Y), and the two reinforcing plates (112) are spaced apart along the vertical direction (Z). The plug-in portion (111) is used to be inserted into the longitudinal beam (100), so that the two reinforcing plates (112) are respectively used to fit with the two side walls of the longitudinal beam (100) along the vertical direction (Z), and the two reinforcing plates (112) are respectively used to be fixedly connected with the two side walls of the longitudinal beam (100) along the vertical direction (Z).

7. The tail beam structure according to claim 1, characterized in that: The connection between the box-shaped body (11) and the corresponding supporting sleeve (12) is an arc transition.

8. The tail beam structure according to claim 1, characterized in that: The other end of the box-shaped body (11) along the second horizontal direction (Y) and the area away from the ground along the vertical direction (Z) is set as a solid part (113), and the solid part (113) is provided with a through shaft hole (1131) along the first horizontal direction (X).

9. The tail boom structure according to claim 8, characterized in that: Along the vertical direction (Z), the axis of the through-hole (1131) is higher than the longitudinal beam (100).

10. Chassis assembly, characterized in that, It comprises two longitudinal beams (100) spaced apart and arranged in parallel along the first horizontal direction (X) and a tail beam structure according to any one of claims 1 to 9, wherein one end of the two box-shaped bodies (11) along the second horizontal direction (Y) is respectively plugged into and relatively fixed to one end of the two longitudinal beams (100).

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