A mine dump truck and a power system module thereof

Abstract

The application discloses a mine dump truck and a power system module thereof, and belongs to the field of mining equipment. The mine dump truck comprises a left power assembly, a right power assembly, a heat dissipation assembly and a sub-frame. The left power assembly and the right power assembly are arranged oppositely and parallelly on both sides of a center line extending along the length direction of the frame. The left power assembly, the right power assembly and the heat dissipation assembly are arranged at the front end of the length direction of the frame through the sub-frame, and the heat dissipation assembly is arranged at the front side of the left power assembly and the right power assembly, and the three components form a U-shaped structure. The left power assembly is coupled and connected by a left engine and a left generator and is connected to the heat dissipation assembly through a left engine pipeline. The right power assembly is coupled and connected by a right engine and a right generator and is connected to the heat dissipation assembly through a right engine pipeline. The two power assemblies are arranged in parallel, the structure is simple and easy to install. The integrated heat dissipation assembly is divided into two functional modules internally, and the heat dissipation effect is good. The integrated sub-frame is designed, the two power assemblies can be well installed, and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to a power system module for a mine dump truck, belonging to the field of mine dump trucks of engineering machinery. BACKGROUND

[0002] The mine dump truck is a heavy-duty dump truck for off-road use, which is specially designed for large-scale and high-efficiency transportation of bulk materials such as ores, rocks and earth in closed operation areas such as mines and large open sites. In order to improve transportation efficiency and reduce transportation cost, in recent years, mine dump trucks have been developing towards large-scale, with a load capacity increasing from dozens of tons to hundreds of tons, and the size and power demand of a single vehicle constantly rising. One of the challenges brought by this is that traditional engines are mostly small and medium-sized, which cannot meet the road demand. The classic solution of equipping a vehicle with one engine cannot meet the power requirements of the whole vehicle.

[0003] Installing more engines on a mine dump truck is also the current research direction. Chinese invention patent CN114872536B discloses a hybrid transmission system using a double-generator module to replace a high-power single-generator module. However, it has the following problems: the double-generator module is arranged in a V shape, resulting in a large transverse size at the front end, which is not compact enough, and the components are not horizontally flat and vertically upright in spatial arrangement, which makes the design and installation more complex. The single generator module uses an independent radiator, which is high in cost. The two independent mounting rack structures are complex and do not form a complete whole, which makes it impossible to establish a connection relationship between the middle part of the two generator modules and the frame. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a power system module for a mine dump truck, which has two power components arranged in parallel, simple structure and easy installation; an integrated heat dissipation component, which is divided into two functional modules inside, good heat dissipation effect; an integrated auxiliary frame, which integrates the power components, heat dissipation components and the like, high integration, can well install two power components, and low cost.

[0005] The present application is implemented according to the following technical solutions: In a first aspect, the present invention provides a power system module for a mining dump truck, comprising a left power assembly, a right power assembly, a heat dissipation assembly, and a subframe; the left power assembly and the right power assembly are arranged opposite to and parallel to each other on both sides of a centerline extending along the length of the frame; the left power assembly, the right power assembly, and the heat dissipation assembly are disposed at the front end of the frame along the length of the frame via the subframe, and the heat dissipation assembly is arranged in front of the left power assembly and the right power assembly, the three forming a U-shaped structure; the left power assembly is formed by coupling a left engine and a left generator, and is connected to the heat dissipation assembly through a left engine pipe; the right power assembly is formed by coupling a right engine and a right generator, and is connected to the heat dissipation assembly through a right engine pipe.

[0006] In some embodiments, the heat dissipation assembly includes a frame and left and right components located within the frame and arranged symmetrically; the frame is placed on the front support of the subframe and fixed to the subframe by fasteners; the left power assembly is connected to the left component of the heat dissipation assembly via a left engine pipe, and the right power assembly is connected to the right component of the heat dissipation assembly via a right engine pipe; the left and right engine pipes are not cross-connected and remain independent.

[0007] In some embodiments, the left-side component includes a left intercooler, a left upper water chamber, a left lower water chamber, a left shield, and a left core; the right-side component includes a right intercooler, a right upper water chamber, a right lower water chamber, a right shield, and a right core; both the left and right shields have open structures for housing cooling fans, and the opening positions are offset; the cooling fan of the left-side component faces the left engine, and the cooling fan of the right-side component faces the right engine.

[0008] In some embodiments, the subframe is a welded structural component, comprising: Mounting brackets are arranged on the vehicle frame, and the shape of the mounting brackets matches the structure of the vehicle frame at the location where the mounting brackets are installed; Multiple mounting supports are arranged on the mounting frame. Both the left and right power components are provided with multiple mounting points. Each mounting support corresponds to one or two mounting points. The mounting supports and mounting points are fixed and unfixed by fasteners, thereby realizing the connection and disconnection of the left and right power components with the mounting frame.

[0009] In some embodiments, the mounting frame is welded from two parallel crossbeams and two parallel longitudinal beams, and both the crossbeams and longitudinal beams are box-shaped welded structures. The two longitudinal beams have the same structure, and after being bent once in their front region and once in their rear region, the longitudinal beams are divided into three sections, namely the front section beam, the middle section beam, and the rear section beam. The middle section beam slopes upward from the front section beam to the rear section beam. The two crossbeams have different structures. The front crossbeam has a straight structure and is connected between the front parts of the two middle section beams. The rear crossbeam has a U-shaped structure and is connected between the two rear section beams.

[0010] In some embodiments, the plurality of mounting supports include two middle supports, two rear supports, one front middle support, and one rear middle support; each of the two middle beam segments has a middle support fixed to its front portion, which is symmetrically arranged along the centerline of the mounting frame in the front-rear direction. The left middle support of the two middle supports is connected to the left front mounting point on the left power assembly by fasteners, and the right middle support of the two middle supports is connected to the right front mounting point on the right power assembly by fasteners. Each of the two rear beam segments has a rear support fixed to its front and rear portions, which are symmetrically arranged along the centerline of the mounting frame in the front-rear direction. The left rear support of the two rear supports is connected to the left rear mounting point on the left power assembly by fasteners, and the right rear support of the two rear supports is connected to the right rear mounting point on the right power assembly by fasteners. The right front mounting point on the left power assembly and the left front mounting point on the right power assembly are respectively connected to the front middle support by fasteners, and the right rear mounting point on the left power assembly and the left rear mounting point on the right power assembly are respectively connected to the rear middle support by fasteners.

[0011] In some embodiments, the left front mounting point and the right front mounting point are both composed of a bent bracket and a shock-absorbing pad, and the bent bracket is bolted to the engine; the left rear mounting point and the right rear mounting point are both composed of a welded bracket and a shock-absorbing pad, and the welded bracket is bolted to the generator.

[0012] In some embodiments, the subframe further includes two connecting supports, namely a left front support and a right front support fixed to two front beams; the bottom of the left front support and the right front support are both mounted to the frame via shock-absorbing pads; the heat dissipation assembly is fixed to the left front support and the right front support; the outer surfaces of the left rear support and the right rear support are both provided with connecting devices and are connected to the frame by hinges.

[0013] In some embodiments, the connecting device is a pin, one of which passes through the left rear support and the left longitudinal beam of the two longitudinal beams, the three being a superimposed welded structure; the other pin passes through the right rear support and the right longitudinal beam of the two longitudinal beams, the three being a superimposed welded structure; the pin is also connected to the frame by a ball joint through a spherical bearing.

[0014] Secondly, the present invention provides a mining dump truck, including the aforementioned power system module.

[0015] Beneficial effects of this invention: Unlike existing technologies, the two power components are arranged in parallel, with a simple structure that is easy to install; the integrated heat dissipation component is divided into two functional modules, which has a good heat dissipation effect; an integrated subframe is designed to integrate the power components, heat dissipation components, etc., with a high degree of integration, which can install the two power components well and at a low cost. Attached Figure Description

[0016] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0017] In the attached diagram: Figure 1 This is a top view of a power system module for a mining dump truck according to the present invention. Figure 2 This is a three-dimensional structural diagram of a power system module for a mining dump truck according to the present invention; Figure 3 This is a bottom view of a power system module for a mining dump truck according to the present invention. Figure 4 This is a perspective structural diagram of the subframe of the present invention; Figure 5 This is a three-dimensional structural diagram of the heat dissipation component of the present invention; Figure 6 This is a partial structural diagram of the mounting fulcrum of the power assembly of the present invention; Figure 7 This is a cross-sectional view of the left rear support of the present invention.

[0018] Attached diagram labels: 1 Left power unit, 2 Right power unit, 3 Cooling unit, 4 Subframe, 5 Frame, 6 Hydraulic pump, 7 Shock absorber, 8 Left front mounting point, 9 Left rear mounting point, 10 Pin.

[0019] 1-1 Left engine, 1-2 Left generator, 1-3 Left engine piping, 2-1 Right engine, 2-2 Right generator, 2-3 Right engine piping.

[0020] 3-1 Left intercooler, 3-2 Left upper water chamber, 3-3 Left lower water chamber, 3-4 Left protective cover, 3-5 Left core.

[0021] 3-6 Right intercooler, 3-7 Right upper water chamber, 3-8 Right lower water chamber, 3-9 Right protective cover, 3-10 Right core.

[0022] 4-1 Left longitudinal beam, 4-2 Right longitudinal beam, 4-3 Front crossbeam, 4-4 Rear crossbeam, 4-5 Left front support, 4-6 Right front support, 4-7 Left middle support, 4-8 Right middle support, 4-9 Left rear support, 4-10 Right rear support, 4-11 Middle front support, 4-12 Middle rear support.

[0023] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] like Figure 1 , Figure 2 , Figure 3As shown, the present invention provides a power system module for a mining dump truck, including a left power assembly 1, a right power assembly 2, a heat dissipation assembly 3, and a subframe 4; the left power assembly 1 and the right power assembly 2 are arranged opposite to each other and parallel to each other on both sides of the centerline extending along the length direction of the frame 5; the left power assembly 1, the right power assembly 2, and the heat dissipation assembly 3 are set at the front end of the frame 5 along the length direction through the subframe 4, and the heat dissipation assembly 3 is arranged in front of the left power assembly 1 and the right power assembly 2, forming a U-shaped structure; the left power assembly 1 is formed by coupling and connecting a left engine 1-1 and a left generator 1-2, and is connected to the heat dissipation assembly 3 through a left engine pipe 1-3; the right power assembly 2 is formed by coupling and connecting a right engine 2-1 and a right generator 2-2, and is connected to the heat dissipation assembly 3 through a right engine pipe 2-3.

[0028] The following provides a further explanation of the specific structure of the aforementioned heat dissipation components.

[0029] like Figure 2 , Figure 5 As shown, the heat dissipation assembly 3 includes a frame and left and right components arranged symmetrically within the frame; the frame is placed on the front support of the subframe 4 and fixed to the subframe 4 by fasteners; the left power assembly 1 is connected to the left component of the heat dissipation assembly 3 through the left engine pipe 1-3, and the right power assembly 2 is connected to the right component of the heat dissipation assembly 3 through the right engine pipe 2-3. The left engine pipe 1-3 and the right engine pipe 2-3 are not cross-connected and remain independent.

[0030] It should be noted that both the left engine pipes 1-3 and the right engine pipes 2-3 include cooling water connection pipes, intake and exhaust connection pipes.

[0031] Further plans will continue to be considered. Figure 2 , Figure 5 As shown, the left-side components include the left intercooler 3-1, the left upper water chamber 3-2, the left lower water chamber 3-3, the left shield 3-4, and the left core 3-5; the right-side components include the right intercooler 3-6, the right upper water chamber 3-7, the right lower water chamber 3-8, the right shield 3-9, and the right core 3-10; both the left shield 3-4 and the right shield 3-9 have open structures for housing the cooling fan, and the opening positions are offset; the cooling fan of the left-side component faces the left engine 1-1, and the cooling fan of the right-side component faces the right engine 2-1.

[0032] The following provides a further explanation of the specific structure of the aforementioned subframe.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6As shown, the subframe 4 is a welded structural component, including a mounting bracket and multiple mounting supports. The mounting bracket is arranged on the frame 5, and the shape of the mounting bracket matches the structure of the frame 5 at the location where the mounting bracket is set. Multiple mounting supports are arranged on the mounting bracket 5. Both the left power assembly 1 and the right power assembly 2 are provided with multiple mounting points. One mounting support corresponds to one or two mounting points. The mounting supports and mounting points are fixed and unfixed by fasteners, thereby realizing the connection and disconnection between the left power assembly 1 and the right power assembly 2 and the mounting bracket.

[0034] Further options, such as Figure 4 As shown, the mounting frame is welded together from two parallel crossbeams (i.e., front crossbeam 4-3 and rear crossbeam 4-4) and two parallel longitudinal beams (i.e., left longitudinal beam 4-1 and right longitudinal beam 4-2). The front crossbeam 4-3 and rear crossbeam 4-4, as well as the left longitudinal beam 4-1 and right longitudinal beam 4-2, are all box-shaped welded structures. The left longitudinal beam 4-1 and right longitudinal beam 4-2 have the same structure. The longitudinal beams are divided into three sections after being bent once in their front and once in their rear regions, namely the front section beam, the middle section beam, and the rear section beam. The middle section beam slopes upward from the front section beam to the rear section beam. The two crossbeams have different structures. The front crossbeam 4-3 has a straight structure and is connected between the front parts of the two middle section beams. The rear crossbeam 4-4 has a ︺-shaped structure and is connected between the two rear section beams.

[0035] Further options, such as Figure 4 , Figure 6 As shown, the multiple mounting supports include two center supports (i.e., left center support 4-7 and right center support 4-8), two rear supports (i.e., left rear support 4-9 and right rear support 4-10), one center front support 4-11, and one center rear support 4-12; each of the two center beam sections has a center support fixed at its front, symmetrically arranged along the centerline of the mounting frame in the front-rear direction. The left center support 4-7 is connected to the left front mounting point 8 on the left power assembly 1 by fasteners, and the right center support 4-8 is connected to the right front mounting point on the right power assembly 2 by fasteners; on the two rear beam sections... Each of the two rear supports is fixed with a rear support arranged symmetrically along the center line of the mounting frame. The left rear support 4-9 of the two rear supports is connected to the left rear mounting point 9 on the left power assembly 1 by fasteners. The right rear support 4-10 of the two rear supports is connected to the right rear mounting point on the right power assembly 2 by fasteners. The right front mounting point on the left power assembly 1 and the left front mounting point on the right power assembly 2 are respectively connected to the middle front support 4-11 by fasteners. The right rear mounting point on the left power assembly 1 and the left rear mounting point on the right power assembly 2 are respectively connected to the middle rear support 4-12 by fasteners.

[0036] Further options, such as Figure 6As shown, the left front mounting point 8 and the right front mounting point are both composed of a bent bracket and a shock-absorbing pad 7, and the bent bracket is bolted to the engine; the left rear mounting point 9 and the right rear mounting point are both composed of a welded bracket and a shock-absorbing pad 7, and the welded bracket is bolted to the generator.

[0037] Further options, such as Figure 2 , Figure 4 As shown, the subframe 4 also includes two connecting supports, namely the left front support 4-5 and the right front support 4-6, which are fixed to the two front beams. The bottom of the left front support 4-5 and the right front support 4-6 are both mounted to the frame through shock-absorbing pads. The heat dissipation assembly 3 is fixed to the left front support 4-5 and the right front support 4-6. The outer sides of the left rear support 4-9 and the right rear support 4-10 are both equipped with connecting devices and are connected to the frame by hinge.

[0038] Further options, such as Figure 4 , Figure 7 As shown, the connecting device is a pin 10. One pin 10 passes through the left rear support 4-9 and the left longitudinal beam 4-1 of the two longitudinal beams. The three are stacked and welded together. The other pin 10 passes through the right rear support 4-10 and the right longitudinal beam 4-2 of the two longitudinal beams. The three are stacked and welded together. The pin 10 is also connected to the frame by a ball joint through a spherical bearing.

[0039] Further options, such as Figure 6 As shown, both the left engine 1-1 and the left generator 1-2 have a power output interface (PTO) at the rear, and a hydraulic pump 6 can be optionally installed to provide a power oil source.

[0040] In summary, this invention provides a power system module for mining dump trucks, achieving the following functions and effects: Unlike existing technologies, the two power components are arranged in parallel, with a simple structure that is easy to install; the integrated heat dissipation component is divided into two functional modules, which has a good heat dissipation effect; an integrated subframe is designed to integrate the power components, heat dissipation components, etc., with a high degree of integration, which can install the two power components well and at a low cost.

[0041] The mining dump truck provided by the present invention is described below. The mining dump truck described below can be referred to in correspondence with the power system module described above.

[0042] The present invention provides a mining dump truck, which may include a power system module as described in any of the above embodiments.

[0043] The beneficial effects achieved by the mining dump truck provided by this invention are consistent with the beneficial effects achieved by the power system module provided by this invention, so they will not be repeated here.

[0044] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0045] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A power system module for mining dump trucks, characterized in that: Includes the left powertrain, right powertrain, cooling system, and subframe; The left and right power assemblies are arranged opposite and parallel to each other on both sides of the centerline extending along the length of the frame. The left power assembly, right power assembly, and heat dissipation assembly are mounted at the front end of the frame along the length direction via the subframe, and the heat dissipation assembly is arranged in front of the left power assembly and right power assembly, forming a U-shaped structure. The left power assembly consists of a left engine and a left generator coupled together, and is connected to the heat dissipation assembly through the left engine piping. The right power assembly consists of a right engine and a right generator coupled together, and is connected to the cooling assembly via the right engine piping.

2. The power system module for a mining dump truck according to claim 1, characterized in that: The heat dissipation assembly includes a frame and left and right side components located within the frame and arranged symmetrically; the frame is placed on the front support of the subframe and fixed to the subframe by fasteners. The left power assembly is connected to the left side of the cooling assembly via a left engine pipe, and the right power assembly is connected to the right side of the cooling assembly via a right engine pipe. The left and right engine pipes are not cross-connected and remain independent.

3. A power system module for a mining dump truck according to claim 2, characterized in that: The left-side component includes a left intercooler, a left upper water chamber, a left lower water chamber, a left protective cover, and a left core. The right-side component includes a right intercooler, a right upper water chamber, a right lower water chamber, a right protective cover, and a right core. Both the left and right shields have open structures for housing cooling fans, and the opening positions are offset. The cooling fan of the left component faces the left engine, and the cooling fan of the right component faces the right engine.

4. A power system module for a mining dump truck according to claim 1, characterized in that, The subframe is a welded structural component, including: Mounting brackets are arranged on the vehicle frame, and the shape of the mounting brackets matches the structure of the vehicle frame at the location where the mounting brackets are installed; Multiple mounting supports are arranged on the mounting frame. Both the left and right power components are provided with multiple mounting points. Each mounting support corresponds to one or two mounting points. The mounting supports and mounting points are fixed and unfixed by fasteners, thereby realizing the connection and disconnection of the left and right power components with the mounting frame.

5. A power system module for a mining dump truck according to claim 4, characterized in that: The mounting frame is welded together from two parallel horizontal beams and two parallel vertical beams, and both the horizontal beams and the vertical beams are box-shaped welded structures. The two longitudinal beams have the same structure. After being bent once in the front region and once in the rear region, the longitudinal beams are divided into three sections, namely the front section beam, the middle section beam and the rear section beam. The middle section beam slopes upward from the front section beam to the rear section beam. The two crossbeams have different structures. The front crossbeam has a straight structure and connects the front parts of the two middle beams. The rear crossbeam has a ︺-shaped structure and connects the two rear beams.

6. A power system module for a mining dump truck according to claim 5, characterized in that: The plurality of mounting supports includes two center supports, two rear supports, one center-front support, and one center-rear support; Each of the two middle beam sections is fixed with a middle support that is symmetrically arranged along the center line of the mounting frame in the front-rear direction. The left middle support of the two middle supports is connected to the left front mounting point on the left power assembly by fasteners, and the right middle support of the two middle supports is connected to the right front mounting point on the right power assembly by fasteners. Each of the two rear beams is fixed with a rear support that is symmetrically arranged along the center line of the mounting frame in the front-rear direction. The left rear support is connected to the left rear mounting point on the left power assembly by fasteners, and the right rear support is connected to the right rear mounting point on the right power assembly by fasteners. The right front mounting point on the left power assembly and the left front mounting point on the right power assembly are respectively connected to the center front support by fasteners, and the right rear mounting point on the left power assembly and the left rear mounting point on the right power assembly are respectively connected to the center rear support by fasteners.

7. A power system module for a mining dump truck according to claim 6, characterized in that: Both the left front mounting point and the right front mounting point are composed of a bent bracket and a shock-absorbing pad, and the bent bracket is bolted to the engine. Both the left and right rear mounting points are composed of welded brackets and shock-absorbing pads, and the welded brackets are bolted to the generator.

8. A power system module for a mining dump truck according to claim 6, characterized in that: The subframe also includes two connecting supports, namely a left front support and a right front support fixed to the two front beams; the bottom of the left front support and the right front support are both mounted to the frame via shock-absorbing pads; the heat dissipation assembly is fixed to the left front support and the right front support. Both the left and right rear supports have connecting devices on their outer surfaces, which are connected to the frame by hinge.

9. A power system module for a mining dump truck according to claim 8, characterized in that: The connecting device is a pin shaft, one of which passes through the left rear support and the left longitudinal beam of the two longitudinal beams, and the three are stacked and welded together. The other pin shaft passes through the right rear support and the right longitudinal beam of the two longitudinal beams, and the three are stacked and welded together. The pin shaft is also connected to the frame by a ball joint through a spherical bearing.

10. A mining dump truck, characterized in that: Includes the power system module as described in any one of claims 1 to 9.

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