Buffer mounting structure of mining wide-body dumper and mining wide-body dumper

Abstract

The utility model provides a mining wide-body dumper buffer installation structure and a mining wide-body dumper, and belongs to the technical field of engineering machinery, the mining wide-body dumper buffer installation structure comprises a container assembly, the container assembly is provided with a container bottom plate, a plurality of damping rubber mats are fixed at intervals along a main longitudinal beam of the container bottom plate, and the container assembly is elastically abutted against a chassis frame through the damping rubber mats. According to the buffering installation structure of the mining wide-body dumper, the damping rubber mat is arranged at the bottom of the container bottom plate, and when the container assembly is turned over and pressed on the chassis frame, the damping rubber mat is pressed by the container assembly to make direct contact with the chassis frame. An auxiliary frame structure does not need to be arranged, the gravity center of the whole vehicle can be lowered, the damping and buffering effects can be achieved, the safety of the chassis frame and the cargo box bottom plate is well guaranteed, and the problem that cargoes deform and crack due to impact is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction machinery, and particularly relates to a buffer installation structure of a wide-body dump truck for mines and a wide-body dump truck for mines. Background Art

[0002] The installation method of the cargo box of a wide-body dump truck for mines is divided into a structure with a sub-frame and a structure without a sub-frame. The advantage of the structure with a sub-frame is that it can evenly distribute the impact force of the cargo box and the goods during operation to the chassis frame, and at the same time ensure that the chassis frame and the cargo box floor are not damaged by impact and cracking. However, the disadvantage is also obvious. The sub-frame causes the center of gravity of the whole vehicle to be too high, which is not conducive to the running stability.

[0003] For the cargo box of the structure without a sub-frame, there is currently no buffer device between the cargo box floor and the chassis frame, or a wear-resistant nylon pad is used for simple force buffering. The cargo box of the structure without a sub-frame is favored by customers because of its low center of gravity and stable operation.

[0004] However, for the current wide-body dump truck for mines with the structure without a sub-frame, since there is no buffer device assembled between the cargo box floor and the chassis frame, it is easy to cause damage to the cargo box floor and the chassis frame. Summary of the Utility Model

[0005] The embodiment of the utility model provides a buffer installation structure of a wide-body dump truck for mines, which can not only solve the problem of too high center of gravity of a large-tonnage wide-body dump truck for mines, but also play a role in shock absorption and buffering between the cargo box floor and the chassis frame, and avoid damage to the cargo box floor and the chassis frame.

[0006] In a first aspect, to achieve the above object, the technical solution adopted by the utility model is: to provide a buffer installation structure of a wide-body dump truck for mines, including a cargo box assembly. The cargo box assembly has a cargo box floor, and a plurality of shock-absorbing rubber pads are fixedly arranged at intervals along the length direction of the main longitudinal beam of the cargo box floor. The cargo box assembly is elastically abutted against the chassis frame through the shock-absorbing rubber pads.

[0007] In combination with the first aspect, in a feasible manner, the shock-absorbing rubber pad includes an installation base and a shock-absorbing rubber layer vulcanized on the surface of the installation base. A plurality of first installation holes are dispersedly arranged on the installation base, and the shock-absorbing rubber layer forms an avoidance notch at the position of the first installation holes.

[0008] In combination with the first aspect, in a feasible manner, a plurality of installation bottom plates are arranged at intervals along the length direction of the main longitudinal beam. Second installation holes are arranged on the installation bottom plates. The shock-absorbing rubber pad is fastened to the installation bottom plates through fasteners passing through the first installation holes and the second installation holes. The exposed section of the fastener is hidden in the avoidance notch, and the length of the exposed section of the fastener is less than the thickness of the shock-absorbing rubber layer.

[0009] In combination with the first aspect, in an implementable manner, the thickness D of the shock-absorbing rubber pad is 30 - 50 mm, and the thickness d of the shock-absorbing rubber layer is two-thirds of D.

[0010] In combination with the first aspect, in an implementable manner, the first mounting hole is an oblong hole.

[0011] In combination with the first aspect, in an implementable manner, the first mounting hole extends to the edge of the mounting base.

[0012] In combination with the first aspect, in an implementable manner, the outer dimensions of the mounting bottom plate and the mounting base are the same, and both are rectangular plates.

[0013] In combination with the first aspect, in an implementable manner, the width of the mounting bottom plate is greater than the width of the main longitudinal beam.

[0014] In combination with the first aspect, in an implementable manner, shock-absorbing rubber pads are arranged along the length direction of the main longitudinal beam, and the distance between two adjacent shock-absorbing rubber pads gradually increases from the front end to the rear end of the main longitudinal beam.

[0015] The buffer mounting structure of the mining wide-body dump truck provided by the present utility model, compared with the prior art, has the beneficial effects that: a shock-absorbing rubber pad is arranged at the bottom of the cargo box bottom plate. When the cargo box assembly is turned over and pressed on the chassis frame, the shock-absorbing rubber pad is pressed by the cargo box assembly and directly contacts the chassis frame. This application does not need to set a sub-frame structure, which can not only reduce the center of gravity of the whole vehicle, but also play a role in shock absorption and buffering, and can well ensure the safety of the chassis frame and the cargo box bottom plate, and avoid the problems of impact deformation and cracking of the goods.

[0016] In the second aspect, the embodiment of the present utility model further provides a mining wide-body dump truck, which is provided with the buffer mounting structure of the mining wide-body dump truck.

[0017] The mining wide-body dump truck provided by the embodiment of the present utility model does not need to adopt a sub-frame structure, and not only has the characteristics of low center of gravity of the cargo box without a sub-frame structure and stable operation, but also can avoid damage to the cargo box bottom plate and the chassis frame due to the shock absorption and buffering effect, and improve the operation life and operation reliability of the whole vehicle. Description of the Drawings

[0018] Figure 1 It is a bottom view structural schematic diagram of the buffer mounting structure of the mining wide-body dump truck provided by the embodiment of the present utility model;

[0019] Figure 2 It is a side view structural schematic diagram of the buffer mounting structure of the mining wide-body dump truck provided by the embodiment of the present utility model;

[0020] Figure 3 Schematic three-dimensional structure diagram of the buffer mounting structure of a mine-use wide-body dump truck provided by an embodiment of the present utility model;

[0021] Figure 4 For Figure 3 Partial enlarged structure diagram at position A in

[0022] Figure 5 Schematic side view structure diagram of a mine-use wide-body dump truck provided by an embodiment of the present utility model;

[0023] Figure 6 Schematic side view structure diagram of the cargo box assembly of a mine-use wide-body dump truck provided by an embodiment of the present utility model when it is lifted;

[0024] Explanation of reference numerals in the drawings:

[0025] 1. Cargo box assembly; 2. Shock-absorbing rubber pad; 21. Mounting base; 22. Shock-absorbing rubber layer; 23. Avoidance notch; 3. Fastener; 4. Chassis frame; 5. Lifting oil cylinder; 6. Mounting base plate; 7. Tipping seat; 8. Main longitudinal beam. Detailed implementation manners

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the following further describes the present utility model in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0027] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary-secondary or sequential relationship between these entities or operations.

[0028] In the claims, description and above-mentioned drawings of the present utility model, when terms such as "front", "rear", "length", "width", "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom" are used to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the specific protection scope of the present invention.

[0029] Please refer to Figures 1 to 6The buffer installation structure of the wide-body dump truck for mining provided by the utility model is now described. The buffer installation structure of the wide-body dump truck for mining includes a cargo box assembly 1, the cargo box assembly 1 has a cargo box bottom plate, and a plurality of shock-absorbing rubber pads 2 are fixed at intervals along the length direction of the main longitudinal beam 8 of the cargo box bottom plate, and the cargo box assembly 1 is elastically abutted against the chassis frame 4 through the shock-absorbing rubber pads 2.

[0030] The buffer installation structure of the wide-body dump truck for mining provided by the utility model is provided with a shock-absorbing rubber pad 2 at the bottom of the cargo box bottom plate. When the cargo box assembly 1 is turned over and pressed on the chassis frame 4, the shock-absorbing rubber pad 2 is directly in contact with the chassis frame 4 by the pressure of the cargo box assembly 1. The application does not need to set up a sub-frame structure, which can not only lower the center of gravity of the whole vehicle, but also play a shock-absorbing and buffering role, and well ensure the safety of the chassis frame 4 and the cargo box bottom plate, and avoid the problem of cargo impact deformation and cracking.

[0031] The shock-absorbing rubber pad 2 of the present application is installed at the bottom of the cargo box floor. When the shock-absorbing rubber pad 2 is worn out and fails, the cargo box assembly 1 can be lifted up by the lifting cylinder 5 for replacement, which is also convenient for installation and maintenance.

[0032] It should be noted that the length direction of the main longitudinal beam 8 of the present application is consistent with the front-rear direction of the entire vehicle.

[0033] In some embodiments, see Figure 1 and Figure 4 As shown, the shock-absorbing rubber pad 2 includes a mounting base 21 and a shock-absorbing rubber layer 22 vulcanized on the surface of the mounting base 21; the mounting base 21 is provided with first mounting holes in a dispersed manner, and the shock-absorbing rubber layer 22 forms an avoidance gap 23 at the position of the first mounting hole. The shock-absorbing rubber layer 22 of the shock-absorbing rubber pad 2 is vulcanized as one with the mounting base 21, so that the shock-absorbing rubber pad 2 forms an integrated structure, and the shock-absorbing rubber layer 22 is not easy to crack during long-term and repeated collisions with the chassis frame 4, which not only improves the stability and reliability of the loading and unloading operation of the dump truck, but also extends the service life of the shock-absorbing rubber pad 2, and reduces the time for maintenance and replacement and the cost of maintenance materials.

[0034] During the vulcanization process, a fixed avoidance gap 23 for the shock-absorbing rubber pad 2 is reserved to avoid drilling holes in the shock-absorbing rubber layer 22 at a later time and damaging the integrity of the shock-absorbing rubber layer 22, thereby reducing the risk of damaging the shock-absorbing rubber layer 22 due to drilling holes, resulting in cracking of the shock-absorbing rubber layer 22 and reduced buffering and shock-absorbing performance.

[0035] In some embodiments, see Figure 1 , Figures 3 to 4As shown in the figure, a plurality of mounting base plates 6 are arranged at intervals along the length direction of the main longitudinal beam 8. A second mounting hole is provided on the mounting base plate 6. The shock-absorbing rubber pad 2 is fastened to the mounting base plate 6 by a fastener 3 passing through the first mounting hole and the second mounting hole. The exposed section of the fastener 3 is hidden in the avoidance notch 23, and the length of the exposed section of the fastener 3 is less than the thickness of the shock-absorbing rubber layer 22. In this application, the mounting base plate 6 is provided on the main longitudinal beam 8 to mount the shock-absorbing rubber pad 2. The mounting base plate 6 can be welded to the bottom of the main longitudinal beam 8. This design method can avoid damaging the whole main longitudinal beam 8, that is, maintain the original internal structure of the component, so as to ensure the strength and rigidity of the whole component. The exposed section of the fastener 3 cannot exceed the shock-absorbing rubber layer 22, so as to avoid interference and wear between the exposed section of the fastener 3 and other components when the cargo box assembly 1 falls back to the chassis frame 4. Moreover, when the cargo box assembly 1 falls back, it also ensures that the shock-absorbing rubber layer 22 is in pressing contact with the chassis frame 4, forming a soft-hard shock-absorbing buffer contact instead of a hard-hard collision damage.

[0036] The fastener 3 used in this application is a bolt pair. The shock-absorbing rubber pad 2 is installed on the mounting base plate 6 of the main longitudinal beam 8 by using the connection method of bolts and nuts. During the use of the vehicle, it can be clearly distinguished whether a single shock-absorbing rubber pad 2 is intact, which is convenient for replacement and daily maintenance.

[0037] In this application, the shock-absorbing rubber pad 2 can also be directly fixed on the main longitudinal beam 8. Generally, a plurality of main longitudinal beams 8 are provided at the bottom of the cargo box floor. The shock-absorbing rubber pad 2 can be fixed on each main longitudinal beam 8, or can be arranged on the symmetric main longitudinal beams 8 along the central axis in the front-back direction of the cargo box assembly 1.

[0038] In some embodiments, the thickness D of the shock-absorbing rubber pad 2 is 30-50 mm, and the thickness d of the shock-absorbing rubber layer 22 is two-thirds of D. This application needs to ensure that the shock-absorbing rubber layer 22 has a relatively thick thickness, so that the shock-absorbing rubber pad 2 has good elastic buffer performance, so as to ensure that when the cargo box assembly 1 falls back to the chassis frame 4, it has better shock-absorbing buffer, achieving the purpose of avoiding collision and mutual damage between the cargo box assembly 1 and the chassis frame 4. Reasonably selecting the performance parameters and quantity of the shock-absorbing rubber pad 2 can extend the service life of the chassis frame 4 and the cargo box assembly 1, and can also extend the service life of the shock-absorbing rubber pad 2. For example, 5-10 shock-absorbing rubber pads 2 are arranged at intervals along the length direction of each main longitudinal beam 8.

[0039] A reasonable installation method and layout method of the shock-absorbing rubber pad 2 can verify the service life of the shock-absorbing rubber pad 2. For example, mounting base plates 6 with the same external dimensions are welded on the main longitudinal beam 8. The width of the mounting base plate 6 is greater than the width of the main longitudinal beam 8, so as to increase the contact area between the shock-absorbing rubber pad 2 and the chassis frame 4, thereby improving the reliability of shock absorption and buffering and meeting the requirements of vehicle operation; see Figure 1As shown in the figure, in terms of the layout, the main longitudinal beam 8 is arranged with a higher density at the front and a lower density at the rear. This is because the cargo box assembly 1 is connected through the rear flip seat 7. During the operation of the wide-body mining dump truck, the displacement of the front end of the cargo box assembly 1 is relatively large. Therefore, the density of the shock-absorbing rubber pads 2 arranged at the front end of the cargo box assembly 1 is relatively high, which can ensure the service performance and lifespan of the shock-absorbing rubber pads 2 and extend the maintenance cycle.

[0040] At the same time, the thickness of the shock-absorbing rubber pad 2 in this application is much smaller than the height of the subframe, which reduces the center of gravity of the whole vehicle. For example, the thickness of the shock-absorbing rubber pad 2 is 23 mm, the thickness of the mounting base 21 is 7 mm, and the total thickness is only 31 mm. Compared with the subframe with a height of 250 mm, the center of gravity of the whole vehicle is greatly reduced.

[0041] In some embodiments, referring to Figure 1 and Figure 4 as shown in the figure, the first mounting hole is an oblong hole. The second mounting hole on the mounting base plate 6 is a round hole. The assembly error can be eliminated through the oblong hole, which is convenient for adjusting the installation position of the fastener 3 and ensures the smooth progress of the assembly.

[0042] In some embodiments, referring to Figure 1 and Figure 4 as shown in the figure, the first mounting hole extends to the edge of the mounting base 21, that is, the first mounting hole is not only an oblong hole but also has an opening at one end, so that the fastener 3 can enter the first mounting hole from the side, improving the convenience of assembly and adjustment of the fastener 3.

[0043] In some embodiments, referring to Figure 1 and Figure 4 as shown in the figure, the outer dimensions of the mounting base plate 6 and the mounting base 21 are the same, and both are rectangular plates. The length direction of the rectangular plate extends along the length direction of the main longitudinal beam 8, ensuring that the mounting base plate 6 and the main longitudinal beam 8 have a large contact surface, thereby improving the reliability of the support.

[0044] In some embodiments, referring to Figure 1 and Figure 4 as shown in the figure, the width of the mounting base plate 6 is greater than the width of the main longitudinal beam 8, which is convenient for the installation of the fastener 3.

[0045] In some embodiments, referring to Figure 1 as shown in the figure, shock-absorbing rubber pads 2 are arranged along the length direction of the main longitudinal beam 8, and the distance between two adjacent shock-absorbing rubber pads 2 gradually increases from the front end to the rear end of the main longitudinal beam 8. That is, the density of the shock-absorbing rubber pads 2 arranged at the front end of the main longitudinal beam 8 is relatively high. Since the displacement of the front end of the cargo box is relatively large during the operation of the wide-body mining dump truck and the impact force generated during the fall is also relatively large, the shock-absorbing rubber pads 2 densely arranged at the front end can reduce their own damage and ensure the service performance and lifespan of the shock-absorbing rubber pads.

[0046] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0047] Based on the same inventive concept, an embodiment of the present application further provides a mining wide-body dump truck, which is provided with the buffer mounting structure of the mining wide-body dump truck.

[0048] For wide-body mining dump trucks of different tonnages, different numbers of shock-absorbing rubber pads 2 can be selected to meet the requirements of stable and reliable vehicle operation.

[0049] The mining wide-body dump truck provided by the embodiment of the present utility model does not need to adopt a sub-frame structure. It not only has the characteristics of low center of gravity of the cargo box and stable operation without a sub-frame structure, but also can avoid the problems of impact deformation, cracking and damage of the cargo box bottom plate and the chassis frame 4 due to the shock-absorbing and buffering effect, thereby improving the service life and operation reliability of the whole vehicle.

[0050] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A buffer mounting structure for a mining wide-body dump truck, including a cargo box assembly (1), the cargo box assembly (1) having a cargo box bottom plate, characterized in that, A plurality of shock-absorbing rubber pads (2) are fixedly arranged at intervals along the length direction of the main longitudinal beam (8) of the cargo box bottom plate, and the cargo box assembly (1) is elastically abutted against the chassis frame (4) through the shock-absorbing rubber pads (2); The shock-absorbing rubber pad (2) comprises a mounting base (21) and a shock-absorbing rubber layer (22) vulcanized on the surface of the mounting base (21); a plurality of first mounting holes are dispersedly arranged on the mounting base (21), and the shock-absorbing rubber layer (22) forms an avoidance notch (23) at the position of the first mounting hole; A plurality of mounting bottom plates (6) are arranged at intervals along the length direction of the main longitudinal beam (8), and second mounting holes are arranged on the mounting bottom plates (6); the shock-absorbing rubber pad (2) is fastened on the mounting bottom plate (6) through a fastener (3) penetrating through the first mounting hole and the second mounting hole; the exposed section of the fastener (3) is hidden in the avoidance notch (23), and the length of the exposed section of the fastener (3) is less than the thickness of the shock-absorbing rubber layer (22); Shock-absorbing rubber pads (2) are arranged along the length direction of the main longitudinal beam (8), and the distance between two adjacent shock-absorbing rubber pads (2) gradually increases from the front end to the rear end of the main longitudinal beam (8).

2. The buffer mounting structure of the mine-use wide-body dump truck according to claim 1, characterized in that, The thickness D of the shock-absorbing rubber pad (2) is 30-50 mm, and the thickness d of the shock-absorbing rubber layer (22) is two-thirds of D.

3. The buffer mounting structure of the mining wide-body dump truck according to claim 1, characterized in that, The first mounting hole is an oblong hole.

4. The buffer mounting structure of the mining wide-body dump truck according to claim 3, characterized in that The first mounting hole extends to the edge of the mounting base (21).

5. The buffer mounting structure of the mine-use wide-body dump truck according to claim 1, characterized in that The outer dimensions of the mounting bottom plate (6) and the mounting base (21) are the same, and both are rectangular plates.

6. The buffer mounting structure of the mine-use wide-body dump truck according to claim 5, characterized in that, The width of the mounting bottom plate (6) is greater than the width of the main longitudinal beam (8).

7. A mining wide-body dump truck, characterized in that, A buffer mounting structure of a mining wide-body dump truck as described in any one of claims 1-6 is provided.

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