Mining electric wheel dumper frame

Abstract

The utility model relates to a mining electric wheel dump truck frame, and belongs to the technical field of electric wheel dump trucks. According to the technical scheme, the variable cross-section box structure comprises a left longitudinal beam and a right longitudinal beam, the left longitudinal beam and the right longitudinal beam are connected through a cross beam, and the left longitudinal beam (the right longitudinal beam) is of a variable cross-section box structure composed of an upper cover plate, a lower flitch plate, an outer side plate and an inner side plate. By means of the box body structure, the situation that the service life is short after the groove-shaped cross section is excessively stressed for a long time can be avoided, meanwhile, the variable-cross-section box body structure can design the corresponding cross section area according to the stress magnitude of different positions, and therefore production materials and cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wheel dump trucks, in particular to a frame of an electric wheel dump truck for mining. Background Art

[0002] Mining dump trucks are specialized vehicles used for transporting ore or earth in open-pit mining and large-scale earthwork construction, with the characteristics of heavy load and high working efficiency. Currently, mining dump trucks are developing in the direction of large-scale and giant.

[0003] Rigid electric wheel dump truck is an important transportation equipment necessary for open-pit mines or large civil construction sites. Its working characteristics are: more loading and unloading, heavy load, short transportation distance, frequent turning and uphill and downhill, continuous return cycle operation, etc., coupled with the poor road conditions of off-road transportation, which makes the use conditions and stress of the frame extremely harsh. Therefore, the structural form of the frame of the mining electric wheel dump truck is more complex. The frame of the mining dump truck is an ultra-large structural part. It is the base for the whole vehicle to bear, support and install. It is the most important structural component of the mining dump truck and will accompany the dump truck throughout its life cycle. During the use of the mining dump truck, the frame is subjected to gravity, impact load, torsion load, bending load and alternating load at the same time, so the frame is required to have good strength and reliability.

[0004] At present, the frames of electric wheel dump trucks for mining commonly used in the market are usually multi-beam box structures, generally composed of 2 longitudinal beams and 6 cross beams. The frame is wide in the front and narrow in the back, low in the front and high in the back. The existing frame longitudinal beams generally adopt a groove-shaped cross-section, and the cross beams and longitudinal beams are riveted or welded. The overall torsional stiffness and strength of the frame are low, and the service life is short. Utility Model Content

[0005] The utility model aims at the problems in the prior art and provides a mining electric wheel dump truck frame with high structural strength, thereby solving the problem in the prior art that the torsional rigidity and strength of the entire frame are low due to the use of a grooved cross section.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A mining electric wheel dump truck frame includes a left longitudinal beam and a right longitudinal beam, the left longitudinal beam and the right longitudinal beam are connected by a cross beam, and the left (right) longitudinal beam is composed of an upper cover plate, a lower plate, an outer plate and an inner plate to form a variable cross-section box structure. By setting the box structure, it is possible to avoid the situation where the service life is low after being subjected to excessive force for a long time when a groove-shaped cross-section is used. At the same time, the variable cross-section box structure can design the corresponding cross-sectional area according to the force size at different positions, thereby reducing the material and cost of production.

[0008] Preferably, the cross beam includes a traction beam, which is used to connect with the hydraulic lifting cylinder, and the cross section of the left (right) longitudinal beam is the largest at the contact with the hydraulic lifting cylinder, and then decreases toward both ends. The longitudinal beam is subjected to the greatest force at the traction beam, and the cross-sectional area of ​​the longitudinal beam is the largest here.

[0009] Preferably, each of the upper cover plate, the lower plate, the outer plate and the inner plate can be divided into at least two small plates. By arranging that each of the upper cover plate, the lower plate, the outer plate and the inner plate can be divided into at least two small plates, it is convenient for production and transportation, and the difficulty of production and transportation is reduced.

[0010] Preferably, two adjacent small plates are welded at the segmentation. By welding two adjacent small plates at the segmentation, the force effect of the longitudinal beam can be ensured.

[0011] Preferably, a plurality of first ribs are provided inside the box structure of the left (right) longitudinal beam, and a first rib is provided between two adjacent plates, and the first rib welds the above four plates into one. By providing the first rib, the stress of the longitudinal beam can be increased, the service life of the frame can be extended, the maximum cross-sectional area of ​​the longitudinal beam can be reduced, and materials can be saved.

[0012] Preferably, the inner plate is provided with a plurality of slotted openings, which facilitate the staff to weld the first rib plate inside at the slotted openings and facilitate the staff to assemble the frame.

[0013] Preferably, the inner plate is further provided with a cover plate, which is used to cover the long hole opening. After the longitudinal beam is welded, the cover plate is used to block the long hole opening, thereby improving the stress effect of the longitudinal beam.

[0014] Preferably, the cross beam comprises a front bumper, the front bumper is a box structure, and a towing hook and a vehicle support plate are arranged at the lower end of the front bumper. By arranging the box-shaped front bumper and the towing hook, the force effect of the front bumper can be improved, and it is convenient to tow the dump truck.

[0015] Preferably, a plurality of second ribs are provided inside the front bumper, and the second ribs are provided above the towing hook or the support plate. The second ribs can increase the stress on the front bumper, reduce the maximum cross-sectional area of ​​the longitudinal beam, and save materials.

[0016] It can be seen from the above technical solutions that the advantages of the utility model are as follows: by setting the box structure, it is possible to avoid the situation where the life of the groove-shaped cross-section is low after being subjected to excessive force for a long time, and the variable cross-section box structure can design the corresponding cross-sectional area according to the force magnitude at different positions, thereby reducing the material and cost of production. The longitudinal beam is subjected to the greatest force at the traction beam, and the cross-sectional area of ​​the longitudinal beam is the largest here. By setting each individual plate in the upper cover plate, the lower plate, the outer plate and the inner plate can be segmented into at least two small plates, which can facilitate production and transportation and reduce the difficulty of production and transportation. By welding two adjacent small plates at the segmentation, the force effect of the longitudinal beam can be ensured. By setting the first rib plate, the force of the longitudinal beam can be increased, the life of the frame can be extended, the maximum cross-sectional area of ​​the longitudinal beam can be reduced, and materials can be saved. By setting the long hole opening, it is convenient for the staff to weld the first rib plate inside at the long hole opening, so that it is convenient for the staff to assemble the frame. By setting the cover plate, after the longitudinal beam is welded, the cover plate is used to block the long hole opening, thereby improving the force effect of the longitudinal beam. By providing the front bumper and the towing hook of the box body, the force effect of the front bumper can be improved, and it is convenient to tow the dump truck. By providing the second rib plate, the force of the front bumper can be increased, the maximum cross-sectional area of ​​the longitudinal beam can be reduced, and materials can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 The structure of the embodiment of the utility model is shown in FIG. Figure 1 .

[0019] Figure 2 The structure of the embodiment of the utility model is shown in FIG. Figure 2 .

[0020] Figure 3 It is a structural schematic diagram of the right longitudinal beam of a specific implementation example of the utility model.

[0021] Figure 4 for Figure 3 Structural cross-section of the A1 area.

[0022] Figure 5 It is a top view of part of the structure of an embodiment of a specific implementation method of the utility model.

[0023] Figure 6 for Figure 5Structural cross-section view of the A2 area in the middle.

[0024] Figure 7 It is a partial cross-sectional structural schematic diagram of a front bumper according to a specific implementation example of the utility model.

[0025] Figure 8 It is a structural schematic diagram of an upper ring beam in a specific implementation example of the utility model.

[0026] Fig. 9 It is a structural schematic diagram of the lower ring beam of an embodiment of the utility model.

[0027] Fig.10 It is a structural schematic diagram of a traction beam according to a specific implementation example of the utility model.

[0028] Fig.11 It is a structural schematic diagram of the rear tail beam according to a specific implementation example of the utility model.

[0029] Fig.12 It is a structural schematic diagram of an electrical control cabinet installation platform according to a specific implementation example of the utility model.

[0030] Fig.13 It is a structural schematic diagram of a fan mounting seat according to a specific implementation example of the utility model.

[0031] Description of main reference numerals

[0032] In the figure: 1, fuel tank fixing seat; 2, left longitudinal beam; 3, right longitudinal beam; 4, front bumper; 5, front round pipe; 6, upper ring beam; 7, lower ring beam; 8, traction beam; 9, rear tail beam; 10, first steering seat; 11, second steering seat; 12, front fixing seat of auxiliary frame; 13, rear fixing seat of first auxiliary frame; 14, rear fixing seat of second auxiliary frame; 15, control cabinet installation platform; 16, fan installation seat; 17, hydraulic oil tank fixing seat; 21, installation fixing seat; 22, first lifting cylinder support; 23, second lifting cylinder support; 24, first intermediate pipe; 27, left rear tail seat; 28, second intermediate pipe; 29, The right rear tailstock is composed of: 30, upper cover plate; 31, lower plate; 32, outer plate; 33, inner plate; 34, first rib plate; 35, cover plate; 36, first circular hole; 37, second circular hole; 38, second rib plate; 39, towing hook; 40, support plate; 41, first threaded mounting hole; 44, front suspension mounting pin hole; 45, second threaded mounting hole; 48, steering knuckle arm mounting pin hole; 49, first pin hole; 50, opening pad; 51, second pin hole; 52, first coaxial pin hole; 53, second coaxial pin hole; 54, third pin hole; 55, first opening; 56, screw hole; 57, second opening. DETAILED DESCRIPTION

[0033] 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.

[0034] Example:

[0035] like Figure 1-Figure 6 As shown, a frame of an electric wheel dump truck for mining includes a left longitudinal beam 2 and a right longitudinal beam 3, a front bumper 4, a front round tube 5, an upper ring beam 6, a lower ring beam 7, a traction beam 8, and a rear tail beam 9, which constitute 6 cross beams connecting the left longitudinal beam 2 and the right longitudinal beam 3, wherein the left longitudinal beam 2 and the right longitudinal beam 3 are box-type structures, and the entire frame constitutes a box frame structure, and the left longitudinal beam 2 and the right longitudinal beam 3 are also respectively provided with a first steering seat 10 and a second steering seat 11, and the first steering seat 10 and the second steering seat 11 adopt a box structure , respectively welded on the lower side of the left longitudinal beam 2 and the right longitudinal beam 3 and on the front side of the lower ring beam 7. Among them, the right longitudinal beam 3 is taken as an example for explanation. The right longitudinal beam 3 is composed of an upper cover plate 30, a lower plate 31, an outer plate 32 and an inner plate 33 to form a variable cross-section box structure. The cross-section near the hydraulic lifting cylinder is the largest, and then decreases toward both ends. Due to the long length of the longitudinal beam, each of the above-mentioned 4 plates can be segmented into 2-3 small plates, and welding is performed at the segment to ensure that each plate is a whole. Figure 3 The section A3 in the middle is a cross-section to facilitate display of the interior of the box. A plurality of first ribs 34 are provided inside the box. The first ribs 34 weld the above four plates into one to increase the bending and torsional strength of the box. To ensure the reliability of the welding of the first ribs 34 and the convenience of the operating space, a plurality of long hole openings are provided on the inner plate 33. After the welding of the internal first ribs 34 is completed, the long hole openings on the inner plate 33 need to be welded and covered with a covering cover 35.

[0036] In this embodiment, the rear end of the longitudinal beam is parallel to the longitudinal center direction of the vehicle body. Near the support position of the lifting hydraulic cylinder, the left longitudinal beam 2 (right longitudinal beam 3) forms an angle of 2° with the longitudinal center direction of the vehicle body to facilitate the layout of the front engine space. The upper cover plate 30 and the lower plate 31 form an angle of 10° to match the downward inclination angle of the cargo box. In this way, the entire longitudinal beam presents a "wide front and narrow rear, low front and high rear" structural form. Two first circular holes 36 are provided on the inner plate 33 and the outer plate 32 in the middle of the left longitudinal beam 2, and the fuel tank fixing seat 1 is inserted into them for welding. Two first circular holes 36 are also provided on the inner plate 33 and the outer plate 32 in the middle of the right longitudinal beam 3, and the hydraulic oil tank fixing seat 17 is inserted into it for welding to connect the inner and outer side plates, thereby also improving the rigidity of the box. A second circular hole 37 matching the front circular tube 5 is provided at the front end of the longitudinal beam. The front circular tube 5 passes through the inner and outer plates 32 and the second circular hole 37 of the two longitudinal beams and is welded into one.

[0037] In this embodiment, the front subframe fixing seat 12 is welded on the front round tube 5 by end face fixing, and there are two of them, which are arranged between the left longitudinal beam 2 and the right longitudinal beam 3, and are symmetrically distributed with respect to the center of the vehicle body; the first subframe rear fixing seat 13 and the second subframe rear fixing seat 14 are radially fixed, and are respectively arranged at the inner middle and rear positions of the left longitudinal beam 2 and the right longitudinal beam 3. The front subframe fixing seat 12, the first subframe rear fixing seat 13 and the second subframe rear fixing seat 14 constitute a total of four-point shock absorption.

[0038] like Figure 7 As shown, the front bumper 4 is a box structure, and multiple second ribs 38 are arranged inside the box, and the second ribs 38 are arranged at the towing hook 39 and the support plate 40. The front bumper 4 has first threaded mounting holes 41 at both ends for mounting the left extended bumper and the right extended bumper.

[0039] like Figure 8 As shown, the upper ring beam 6 is a "U"-shaped box structure, which is connected across the upper parts of the left longitudinal beam 2 and the right longitudinal beam 3. Front suspension mounting pin holes 44 are provided at both ends of the upper ring beam 6. The front suspension adopts McPherson suspension. A plurality of second threaded mounting holes 45 are provided on the left and right outermost end faces of the upper ring beam 6 for mounting the left extension beam and the right extension beam.

[0040] like Fig. 9 As shown, the lower ring beam 7 is a "U"-shaped box structure, which is connected across the lower part of the left longitudinal beam 2 and the right longitudinal beam 3, and cooperates with the upper ring beam 6 to form an "O"-shaped ring beam structure. The left and right ends of the lower ring beam 7 are provided with steering knuckle arm mounting pin holes 48 connected to the steering knuckle arm.

[0041] like Fig.10As shown, the traction beam 8 is a multi-casting welded integrated structure, which is composed of castings: a mounting seat 21, a first lifting cylinder support 22, a second lifting cylinder support 23, a first intermediate tube 24, etc. The mounting seat 21 is welded to the outer ends of both sides of the first lifting cylinder support 22 and the second lifting cylinder support 23, and the first intermediate tube 24 is welded in the middle of the first lifting cylinder support 22 and the second lifting cylinder support 23. The mounting seat 21 is provided with a first pin hole 49 for supporting the first pin shaft of the lifting cylinder, and the first pin shaft is fixed to the mounting seat 21 through a radial pin shaft; the first lifting cylinder support 22 and the second lifting cylinder support 23 are provided with an open pad 50 that conforms to the longitudinal beam, and the first lifting cylinder support 22, the second lifting cylinder support 23 and the longitudinal beam are welded together through the opening and the open pad 50 here, and the first intermediate tube 24 is provided with a second pin hole 51 connected to the rear axle barrel nose cone.

[0042] like Fig.11 As shown, the rear tail beam 9 is a cast-welded integrated structure, which is composed of: a left rear tail seat 27, a second intermediate pipe 28 and a right rear tail seat 29. The second intermediate pipe 28 is welded between the left rear tail seat 27 and the right rear tail seat. A group of first coaxial pin holes 52 for mounting the cargo box and a group of second coaxial pin holes 53 for mounting the rear suspension are provided on the left rear tail seat 27 and the right rear tail seat. In addition, a third pin hole 54 for mounting the A-shaped suspension swing arm is also provided on the left rear tail seat 27.

[0043] like Fig.12 As shown, the control cabinet mounting platform 15 is provided with three mounting longitudinal beams, each of which has a first opening 55 that conforms to the upper part of the upper ring beam 6. The control cabinet mounting platform 15 is welded to the upper ring beam 6 through the first opening 55. The upper end of the control cabinet mounting platform 15 is provided with screw holes 56 for mounting the AC cabinet, so that the AC cabinet can be directly installed on the frame.

[0044] like Fig.13 As shown, the fan mounting seat 16 is provided with a second opening 57 conforming to the shape of the intermediate tube, and the fan mounting seat 16 is welded to the first intermediate tube 24 through the second opening 57 to form a whole.

[0045] 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 frame of an electric wheel dump truck for mining, comprising a left longitudinal beam (2) and a right longitudinal beam (3), wherein the left longitudinal beam (2) and the right longitudinal beam (3) are connected by a cross beam, and characterized in that: The left (right) longitudinal beam is composed of an upper cover plate (30), a lower plate (31), an outer plate (32) and an inner plate (33) to form a variable cross-section box structure.

2. The frame of the mining electric wheel dump truck according to claim 1, characterized in that: The cross beam comprises a traction beam (8) which is used to connect with the hydraulic lifting cylinder. The cross section of the left (right) longitudinal beam is the largest at the contact point with the hydraulic lifting cylinder and then decreases towards both ends.

3. The frame of the mining electric wheel dump truck according to claim 1, characterized in that: Each individual plate among the upper cover plate (30), the lower plate (31), the outer plate (32) and the inner plate (33) can be segmented into at least two small plates.

4. The frame of the mining electric wheel dump truck according to claim 3, characterized in that: Two adjacent small plates are welded at the segmentation.

5. The frame of the mining electric wheel dump truck according to claim 4, characterized in that: A plurality of first rib plates (34) are arranged inside the box structure of the left (right) longitudinal beam, and a first rib plate (34) is arranged between two adjacent plates. The first rib plates (34) weld the above four plates into one body.

6. The frame of the mining electric wheel dump truck according to claim 5, characterized in that: The inner plate (33) is provided with a plurality of long hole openings.

7. The frame of the mining electric wheel dump truck according to claim 6, characterized in that: A sealing cover plate (35) is also provided on the inner side plate (33), and the sealing cover plate (35) is used for sealing the long hole opening.

8. The frame of the mining electric wheel dump truck according to claim 1, characterized in that: The cross beam comprises a front bumper (4), which is a box structure, and a towing hook (39) and a vehicle supporting plate (40) are arranged at the lower end of the front bumper (4).

9. The frame of the mining electric wheel dump truck according to claim 8, characterized in that: A plurality of second ribs (38) are arranged inside the front bumper (4), and the second ribs (38) are arranged above the towing hook (39) or the vehicle supporting plate (40).

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