Wide-body dumper container lifting structure

Abstract

A container lifting structure of a wide-body dumper belongs to the technical field of engineering machinery and comprises a container and a frame, a front plate of the container is fixedly provided with two upper connecting parts, each upper connecting part is correspondingly hinged with a lifting oil cylinder, a lower connecting hinge point of each lifting oil cylinder is hinged with a lower connecting part, the lower connecting part is of a concentric-square-shaped structure, and the lower connecting part is connected with the frame. The lower connecting part is fixedly arranged on the frame in a sleeving mode, the two lifting oil cylinders are oppositely arranged on the two sides of the frame, the span between the two lifting oil cylinders can be increased due to the arrangement of the lower connecting part, and the possibility of unbalance loading of the two lifting oil cylinders is reduced; the two lifting oil cylinders are lifted forwards to provide lifting force with larger tonnage, so that the large-tonnage capacity of a vehicle is improved, faults of an oil cylinder system and a container connecting structure are reduced, the lower connecting part shaped like the Chinese character'hui 'is good in integrity and high in transverse rigidity, the lifting stability can be effectively improved, torsional deformation is reduced, and the lifting safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a lifting structure for a cargo box of a wide-body dump truck. Background Art

[0002] Off-road wide-body dump trucks generally use a single-cylinder front-lift form. As vehicles in mining areas become larger and their load-bearing capacity continues to increase, the tonnage of the single-cylinder front-lift cylinder is constantly increasing, the cargo box lifting structure is limited by the single cylinder, and the connection strength with the cargo box and the pressure of the single cylinder are increased. At the same time, when unloading in the mining area, there will be unloading problems such as soft road surface and overloading, which will aggravate the imbalance of force on the connection structure between the cargo box and the cylinder, as well as the overloading force of the cylinder, causing problems such as damage to the cargo box connection structure and damage to the cylinder.

[0003] In order to solve the problems of uneven force and overload, a double-cylinder lifting structure (such as publication number CN206394508U) has appeared. A dump cylinder and a cylinder lower support are respectively arranged on the opposite sides of the beam. The cylinder lower support is fixed on the beam, and the cylinder barrel end of the dump cylinder is hinged to the cylinder lower support. The piston rod end of the dump cylinder is hinged to the bottom of the vehicle compartment, so that the cargo box can be lifted by the double dump cylinders, reducing the pressure of the single cylinder and improving the support stability.

[0004] In the existing double-cylinder lifting structure, the lower supports of the cylinders are independently installed on both sides of the beam. The two lower supports of the cylinders are connected only by a rotating shaft at the bottom. The overall lateral rigidity is poor. When soft road conditions, overloading, and other phenomena occur during the lifting and unloading process, torsional deformation problems are very likely to occur, resulting in poor safety in use. Utility Model Content

[0005] In order to solve the technical problems in the above-mentioned background technology that the existing double-cylinder lifting structure has poor overall lateral rigidity and is very prone to torsional deformation, the utility model provides a wide-body dump truck cargo box lifting structure.

[0006] The technical solution of this utility model is as follows:

[0007] The utility model provides a wide-body dump truck cargo box lifting structure, comprising: a cargo box and a frame, wherein two upper connecting parts are fixedly installed on a front plate of the cargo box, each upper connecting part is hinged with a lifting cylinder, the lower connecting hinge point of the lifting cylinder is hinged with the lower connecting part, the lower connecting part is a U-shaped structure, the lower connecting part is sleeved and fixed on the frame, the two lifting cylinders are relatively arranged on both sides of the frame, the setting of the lower connecting part makes the lifting cylinders relatively arranged on both sides of the frame, and no longer installed on the upper wing surface of the frame, which can increase the span between the two lifting cylinders and reduce the possibility of unbalanced loading of the two lifting cylinders. The front lifting of the two lifting cylinders can provide a lifting force of a larger tonnage, thereby improving the large tonnage capacity of the vehicle and reducing the failure of the cylinder system and the cargo box connection structure, the U-shaped lower connecting part has good integrity and strong lateral rigidity, can effectively improve the stability of lifting, reduce torsional deformation, and improve the safety of lifting.

[0008] Preferably, the lower connecting part includes two cylinder bases, the tops of the two cylinder bases are connected by an upper reinforcing beam, the bottoms of the two cylinder bases are connected by a lower cross beam, the upper reinforcing beam, the lower cross beam and the cylinder bases are all connected by bolts, the upper reinforcing beam is located above the frame, and the lower cross beam is located below the frame, together forming a U-shaped lower connecting part, which effectively improves the integrity and lateral stiffness and reduces torsional deformation.

[0009] Preferably, the oil cylinder base, the lower cross beam and the frame are all connected by bolts, which improves the connection strength and stability between the lower connecting part and the frame, ensures the transmission of force between the lower connecting part and the frame, and reduces torsional deformation.

[0010] Preferably, the cylinder base includes a second fixed plate, which is an inverted L-shaped structure, and can expand the contact area with the upper reinforcement beam, thereby improving the supporting stability and connection firmness of the upper reinforcement beam. The second fixed plate is connected to the lower cross beam and the upper reinforcement beam by bolts, and a second pin is fixed on the second fixed plate, and the second pin is hinged to the lower connecting hinge of the lifting cylinder.

[0011] Preferably, the lower cross beam includes a connecting rod, and two connecting plates are symmetrically installed at both ends of the connecting rod. The connecting plate is connected to the second fixing plate by bolts, which enlarges the connection area between the connecting rod and the cylinder base and the frame, and improves the installation firmness.

[0012] Preferably, the upper connecting part includes a first fixed plate, which is fixedly mounted on the front plate of the cargo box. A connecting arm is fixedly provided on the first fixed plate, and the connecting arm is hinged to the upper connecting hinge of the corresponding lifting cylinder through a first pin shaft to facilitate the articulation of the lifting cylinder and the cargo box.

[0013] Preferably, the upper connection hinges of the two lifting cylinders are coaxially arranged, and the lower connection hinges of the two lifting cylinders are coaxially arranged, which can meet the synchronization requirements of the installation of the two lifting cylinders.

[0014] It can be seen from the above technical solutions that the advantages of the utility model are:

[0015] 1. The lower connecting part is sleeved and fixed on the frame. The U-shaped lower connecting part has good integrity and strong lateral rigidity, which can effectively improve the stability of lifting, reduce torsional deformation and improve the safety of lifting. The two lifting cylinders are relatively arranged on both sides of the frame, which can increase the span between the two lifting cylinders and reduce the possibility of unbalanced loading of the two lifting cylinders. The front lifting of the two lifting cylinders can provide a larger tonnage lifting force, thereby improving the large tonnage capacity of the vehicle and reducing the failure of the cylinder system and the cargo box connection structure.

[0016] 2. The tops of the two cylinder bases are connected by an upper reinforcement beam, and the bottoms of the two cylinder bases are connected by a lower cross beam. The force between the two cylinder bases is transmitted through the upper reinforcement beam and the lower cross beam. The integrity is good and the lateral rigidity is strong, which can effectively reduce torsional deformation.

[0017] 3. The second fixing plate is an inverted L-shaped structure, which can expand the contact area with the upper reinforcement beam, thereby improving the supporting stability and connection firmness of the upper reinforcement beam.

[0018] 4. The setting of the connecting plate effectively expands the connection area between the connecting rod, the cylinder base and the frame, thereby improving the installation firmness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of a wide-body dump truck cargo box lifting structure according to one or more embodiments of the utility model;

[0021] Figure 2 for Figure 1 A local enlarged schematic diagram of the structure A shown;

[0022] Figure 3 for Figure 1 A local enlarged schematic diagram of the structure B position shown;

[0023] Figure 4 This is a schematic diagram of the exploded structure of the lower connecting part according to one or more embodiments of the present invention;

[0024] The components represented by the reference numerals in the figure are:

[0025] 1. Cargo box; 2. Vehicle frame; 3. Upper connecting part; 31. First fixing plate; 32. Connecting arm; 33. First pin shaft; 4. Lifting cylinder; 5. Lower connecting part; 51. Cylinder base; 511. Second fixing plate; 512. Second pin shaft; 52. Upper reinforcing beam; 53. Lower cross beam; 531. Connecting plate; 532. Connecting rod. DETAILED DESCRIPTION

[0026] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0027] In a typical implementation of the present invention, Figure 1-Figure 4 As shown, a wide-body dump truck cargo box lifting structure is proposed, including: a cargo box 1, a frame 2, two upper connecting parts 3, two lifting cylinders 4 and a U-shaped lower connecting part 5, the two upper connecting parts 3 are fixedly installed on the front plate of the cargo box 1 by bolt connection, welding, etc., and are mainly used for connection with the lifting cylinder 4; the lower connecting part 5 is sleeved on the frame 2 and fixedly connected to the frame 2 by bolt connection, the two ends of the lower connecting part 5 are respectively located on both sides of the frame 2, and a lifting cylinder 4 is hinged at each end of the lower connecting part 5, and the upper connection hinge of the lifting cylinder 4 is hinged to the corresponding upper connecting part 3.

[0028] The two lifting cylinders 4 on both sides of the frame 2 have the same height, the upper connection hinges of the two lifting cylinders 4 are coaxially arranged, and the lower connection hinges of the two lifting cylinders 4 are coaxially arranged, which can meet the synchronization requirements of the installation of the double lifting cylinders 4. The setting of the lower connecting part 5 makes the lifting cylinders 4 relatively arranged on both sides of the frame 2, instead of being installed on the upper wing surface of the frame 2, which can increase the span between the two lifting cylinders 4 and reduce the possibility of unbalanced loading of the two lifting cylinders 4. The two lifting cylinders 4 can provide a lifting force of a larger tonnage by lifting forward, thereby improving the large tonnage capacity of the vehicle and reducing the failure of the cylinder system and the cargo box connection structure.

[0029] like Figure 3As shown, the upper connecting part 3 includes a first fixed plate 31, a connecting arm 32 and a first pin shaft 33. The first fixed plate 31 is fixedly mounted on the front plate of the cargo box 1 by welding or the like. The connecting arm 32 is fixedly mounted on the first fixed plate 31 by welding. The end of the connecting arm 32 is hinged to the upper connecting hinge point of the corresponding lifting cylinder 4 through the first pin shaft 33. The number of the upper connecting parts 3 is the same as the number of the lifting cylinders 4 and corresponds one to one, and is mainly used for the hinge connection between the lifting cylinder 4 and the front plate of the cargo box 1.

[0030] like Figure 2 , Figure 4 As shown, the lower connecting part 5 is a U-shaped structure, which includes a cylinder base 51, an upper reinforcement beam 52 and a lower cross beam 53. There are two cylinder bases 51, which are relatively arranged on both sides of the frame 2 and fixedly connected to the frame 2 by bolts. The two cylinder bases 51 are arranged at the same height, and are mainly used to be hinged with the lower connecting hinge point of the lifting cylinder 4 corresponding to the same side; the tops of the two cylinder bases 51 are connected by the upper reinforcement beam 52, and the upper reinforcement beam 52 and the cylinder base 51 are fixedly connected by bolts, and the upper reinforcement beam 52 is located above the frame 2; the bottoms of the two cylinder bases 51 are connected by the lower cross beam 53, and the lower cross beam 43 is fixedly connected to the cylinder base 51 and the side of the frame 2 by bolts, so that the cylinder base 51, the upper reinforcement beam 52 and the lower cross beam 53 together form a U-shaped lower connecting part 5 structure, which has good integrity and strong lateral rigidity, can effectively improve the stability of lifting, reduce torsional deformation, and improve the safety of lifting.

[0031] The cylinder base 51 includes a second fixing plate 511 and a second pin shaft 512. The second fixing plate 511 is an inverted L-shaped structure, that is, it includes a vertical section and a horizontal section. The horizontal section is fixedly arranged on the top of the vertical section. A number of bolt holes are arranged on the vertical section and the horizontal section. The vertical section is used for connecting with the lower cross beam 53 and the frame 2, and the horizontal section is used for connecting with the upper reinforcement beam 52. The setting of the horizontal section can expand the contact area with the upper reinforcement beam 52, thereby improving the supporting stability and connection firmness of the upper reinforcement beam 52; the second pin shaft 512 is fixedly installed on the vertical section of the second fixing plate 511 by welding or the like. The second pin shaft 512 is arranged horizontally, and is mainly used for connecting with the lower connecting hinge of the lifting cylinder 4.

[0032] The lower cross beam 53 includes a connecting plate 531 and a connecting rod 532. There are two connecting plates 531. A plurality of bolt holes are provided on the connecting plates 531. The two connecting plates 531 are symmetrically installed on both sides of the connecting rod 532 by bolt connection. The connecting plates 531 are also fixedly connected to the second fixing plate 511 and the frame 2 by bolt connection.

[0033] Since the oil cylinder base 51, the upper reinforcement beam 52, the lower cross beam 53, and the lower connecting part 5 and the frame 2 are all fixedly connected by bolt connection, the lower connecting part 5 has strong overall installation stability, and can adjust the relative position and components as needed. It is easy to use and has strong overall adaptability. It will not change the structure of the frame 2 and the cargo box 1, and effectively reduces the cost of use.

[0034] It can be understood that the rear end bottom of the cargo box 1 is rotatably connected to the frame 2 via a pin shaft, and the specific connection method is conventional means and will not be described in detail here.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wide-body dump truck cargo box lifting structure, comprising: A cargo box (1) and a vehicle frame (2), characterized in that two upper connecting parts (3) are fixedly installed on the front plate of the cargo box (1), each upper connecting part (3) is correspondingly hinged with a lifting cylinder (4), the lower connecting hinge of the lifting cylinder (4) is hinged with the lower connecting part (5), the lower connecting part (5) is a U-shaped structure, the lower connecting part (5) is sleeved and fixed on the vehicle frame (2), and the two lifting cylinders (4) are relatively arranged on both sides of the vehicle frame (2).

2. A wide-body dump truck cargo box lifting structure according to claim 1, characterized in that: The lower connecting part (5) comprises two oil cylinder bases (51), the tops of the two oil cylinder bases (51) are connected via an upper reinforcing beam (52), the bottoms of the two oil cylinder bases (51) are connected via a lower cross beam (53), the upper reinforcing beam (52), the lower cross beam (53) and the oil cylinder bases (51) are all connected via bolts, the upper reinforcing beam (52) is located above the vehicle frame (2), and the lower cross beam (53) is located below the vehicle frame (2).

3. The wide-body dump truck cargo box lifting structure according to claim 2, characterized in that: The oil cylinder base (51), the lower cross beam (53) and the vehicle frame (2) are all connected via bolts.

4. The wide-body dump truck cargo box lifting structure according to claim 2, characterized in that: The oil cylinder base (51) comprises a second fixing plate (511), the second fixing plate (511) is an inverted L-shaped structure, the second fixing plate (511) is connected to the lower cross beam (53) and the upper reinforcement beam (52) by bolts, a second pin shaft (512) is fixedly provided on the second fixing plate (511), and the second pin shaft (512) is hinged to the lower connection hinge point of the lifting oil cylinder (4).

5. The wide-body dump truck cargo box lifting structure according to claim 4, characterized in that: The lower cross beam (53) comprises a connecting rod (532), two connecting plates (531) are symmetrically mounted at both ends of the connecting rod (532), and the connecting plates (531) are connected to the second fixing plate (511) via bolts.

6. The wide-body dump truck cargo box lifting structure according to claim 1, characterized in that: The upper connecting portion (3) comprises a first fixing plate (31), the first fixing plate (31) being fixedly mounted on the front plate of the cargo box (1), a connecting arm (32) being fixedly arranged on the first fixing plate (31), and the connecting arm (32) being hingedly connected to the upper connecting hinge point of the corresponding lifting cylinder (4) via a first pin shaft (33).

7. The wide-body dump truck cargo box lifting structure according to claim 1, characterized in that: The upper connection hinges of the two lifting oil cylinders (4) are coaxially arranged, and the lower connection hinges of the two lifting oil cylinders (4) are coaxially arranged.

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