A disassembly device for the engine set of a multi-power source electric wheel mining dump truck

Abstract

This utility model discloses a disassembly device for an engine set of a multi-power source electric wheel mining dump truck, including a frame, at least two engine sets, a front suspension bracket, a rear suspension bracket, a rolling device, and shock absorbers respectively mounted on the front and rear suspension brackets. The front and rear suspension brackets are connected to each engine set. The rolling device is mounted on the rear suspension bracket. An extension plate is provided on the rear crossbeam at the bottom of the frame along the opposite direction of engine set disassembly. The shock absorber on the front suspension bracket abuts against the front crossbeam at the bottom of the frame, and the shock absorber on the rear suspension bracket abuts against the extension plate. By setting a rolling device on the rear suspension bracket, adding an extension plate on the rear crossbeam of the frame, and cooperating with the detachable design of the shock absorber, the engine set can be moved horizontally along the extension plate to get out of the interference area of ​​the frame, solving the problem of disassembly and assembly difficulties caused by overall hoisting and space constraints in the multi-power source mode.

Description

Technical Field

[0001] This utility model relates to a disassembly device for an engine set of a multi-power source electric wheel mining dump truck, belonging to the technical field of engineering machinery. Background Technology

[0002] Rigid-frame mining dump trucks are a crucial component of mining machinery and transportation equipment, widely used both domestically and internationally. Within this product category, larger equipment, such as vehicles with a load capacity of 150 tons or more, typically utilizes large-capacity engines with a displacement of 30L or more. The technology for this level of engine is not yet mature enough in China, and most parts need to be imported. Imported parts suffer from long lead times, high prices, service difficulties, and limited cooperation channels. Therefore, the use of large engines has hindered the development of the domestic rigid-frame dump truck industry. To address this situation, several domestic companies have begun using a "multi-power source" solution. This refers to using generator sets composed of two or three engines to replace traditional large engines, thereby reducing prices and shortening delivery cycles.

[0003] An engine typically requires a major overhaul after 15,000 hours of use, while the entire vehicle can operate for over ten or even twenty years. This necessitates multiple engine and radiator disassemblies. The current mainstream approach is to mount the radiator, engine, and alternator on a subframe. When removal is needed, this entire assembly is disassembled as a whole. This solution offers good overall integrity and performance, but it's unsuitable for multi-power source configurations.

[0004] For multi-power source mode, the current approach is to use a traditional subframe solution, where the engine is directly mounted on the subframe. The disadvantages of this approach are its large overall weight and space occupation. In particular, disassembly requires hoisting as a whole, which is inconvenient. It is also difficult to design a suspension system and is prone to resonance. The second approach is to use a four-point suspension solution, where the engine is directly mounted on the frame using a simple bracket. Although this approach has a simple structure, does not require a large space, and has better vibration isolation, the presence of a frame beam above the engine makes it impossible to directly disassemble the engine by hoisting. Therefore, it is more difficult to disassemble and assemble compared to the former approach. Summary of the Invention

[0005] Purpose of the invention: To solve the above-mentioned technical problems, this utility model provides a disassembly device for the engine set of a multi-power source electric wheel mining dump truck. This device, by setting a rolling device on the rear suspension bracket, adding an extension plate to the rear crossbeam of the frame, and cooperating with the detachable design of the shock absorber, enables the engine set to move horizontally along the extension plate and get out of the interference area of ​​the frame, thus solving the problem of disassembly and assembly difficulties caused by the need for overall hoisting and space constraints in the multi-power source mode.

[0006] Technical Solution: A disassembly device for an engine set of a multi-power source electric wheel mining dump truck includes a frame, at least two engine sets, a front suspension bracket, a rear suspension bracket, a rolling device, and shock absorbers respectively mounted on the front and rear suspension brackets. The front and rear suspension brackets are connected to each engine set. The rolling device is mounted on the rear suspension bracket. An extension plate is provided on the rear crossbeam at the bottom of the frame in the opposite direction of engine set disassembly. The shock absorber on the front suspension bracket abuts against the front crossbeam at the bottom of the frame, and the shock absorber on the rear suspension bracket abuts against the extension plate. When the shock absorber on the rear suspension bracket abuts against the extension plate, the rolling device is suspended. After the shock absorber on the rear suspension bracket is disassembled, the rolling device abuts against the extension plate and moves along the extension plate in the direction of engine set disassembly, causing the engine set to move away from the interference area above the frame.

[0007] This invention solves the problem of difficult disassembly and assembly caused by the need for overall hoisting and space constraints in multi-power source mode engine disassembly by installing a rolling device on the rear suspension bracket, adding an extension plate to the rear crossbeam of the frame, and combining this with the detachable design of the shock absorbers. This significantly improves disassembly efficiency. Under normal operating conditions, the front and rear shock absorbers of the engine assembly are in contact with the frame and the extension plate, respectively. When disassembly is required, the engine assembly is slightly lifted, and the front and rear shock absorbers are removed. After disassembly, the rear lifting point of the engine assembly is removed, allowing the rolling device to rest on the extension plate. The engine assembly is then moved out using the front lifting point. Once the entire engine assembly is out of the upper interference area, the rear lifting point is reinstalled, and the entire assembly is lifted out, completing the disassembly of the engine assembly.

[0008] In a preferred embodiment, to optimize the structural stability of the rolling device, the rolling device includes a mounting base, mounting brackets disposed on both sides of the mounting base, and rollers. The mounting brackets and mounting base are an integral structure, the rollers are rotatably mounted within the mounting base, and the mounting brackets are detachably connected to the rear suspension bracket. By using an integral mounting base and mounting brackets, combined with a detachable connection method, modular installation and maintenance of the rolling device are achieved, reducing assembly complexity.

[0009] In a preferred embodiment, to ensure the reliable pressure resistance of the rolling device, a mounting slot is provided on the rear suspension bracket, and the mounting seat extends through the mounting slot from bottom to top, with the top surface of the mounting bracket abutting against the bottom surface of the rear suspension bracket. This design, with the mounting seat extending through the mounting slot from bottom to top, allows the top surface of the mounting bracket to abut against the bottom surface of the rear suspension bracket, enabling direct transfer of vertical loads to the bracket and improving compressive strength.

[0010] Preferably, to facilitate roller maintenance, the mounting base and mounting bracket are provided with a roller mounting space extending along the engine assembly disassembly direction. This through-type roller mounting space design allows for side mounting or disassembly of the roller, avoiding vertical space limitations during disassembly.

[0011] Preferably, to avoid interference between the roller and the shock absorber, the distance from the bottom of the roller to the bottom surface of the rear suspension bracket is less than the distance from the bottom of the shock absorber on the rear suspension bracket to the bottom surface of the rear suspension bracket. By controlling the height of the roller bottom to be lower than the height of the shock absorber bottom, the function of switching between the roller being suspended when the shock absorber is working and the roller contacting the extension plate independently when disassembling is achieved.

[0012] A preferred embodiment, to simplify the axial fixing structure of the roller, further includes a pin, a bolt, a first countersunk hole along the roller's axial direction, a second countersunk hole coaxial with the first countersunk hole, and a through hole connecting the first and second countersunk holes. The first countersunk hole extends axially inward across the roller from one end face of the mounting base, and the second countersunk hole extends axially inward from the other end face of the mounting base and connects to the first countersunk hole via the through hole. The diameter of the through hole is smaller than the diameter of the bolt head. The pin is disposed within the first countersunk hole, and the bolt passes sequentially through the second countersunk hole and the through hole before being detachably connected to the pin. This coaxial countersunk hole and through hole combined with a bolt-pin connection allows for quick assembly and disassembly of the roller, reducing maintenance time.

[0013] Preferably, to prevent installation damage, the end of the pin near the outer side of the mounting base has a protrusion. By providing a protrusion at the end of the pin, the force during hammering installation is concentrated on the protrusion, avoiding deformation of the mounting base or damage to the threads caused by hammering.

[0014] In a preferred embodiment, to balance lifting and structural strength, the rear suspension bracket is provided with at least two sets of first reinforcing plates, each of which has a lifting hole. This integrated design of the first reinforcing plates and lifting holes achieves a combination of localized reinforcement and lifting functionality for the rear suspension bracket, reducing the need for additional lifting equipment.

[0015] In a preferred embodiment, to optimize the oil filter layout, the rear suspension bracket is further provided with an extension plate. The engine oil filter assembly is connected to the extension plate, and the extension plate is provided with a second reinforcing plate connected to a first reinforcing plate near the oil filter assembly. By connecting the filter assembly with the extension plate and providing the second reinforcing plate, the filter can be installed closer to the engine block, shortening the oil passage to quickly build up oil pressure, while also increasing the rigidity of the extension plate.

[0016] In a preferred embodiment, to enhance the rigidity and roll stability of the engine assembly, a rear suspension bracket is installed on each side of each engine assembly, and a front suspension bracket is installed at its front end. At least two shock absorbers are installed on each of the front and rear suspension brackets.

[0017] By fixing the front end of each engine unit to the front suspension bracket and the rear ends on both sides to their respective rear suspension brackets, and installing at least two shock absorbers on the front and rear brackets respectively, a high-rigidity connection frame is formed between the engine unit and the vehicle frame, which effectively resists lateral forces and torsional loads during operation and significantly improves roll stability.

[0018] Beneficial effects: This utility model, by setting a rolling device on the rear suspension bracket and using it in conjunction with the frame extension plate, enables the engine unit to be disassembled and moved along a preset track, improving the disassembly efficiency of the engine unit in multi-power source mode; it improves the dependence of traditional overall hoisting schemes on space and frame structure, enhances structural stability through the integrated rolling component design, and enables rapid maintenance in conjunction with the through-type roller installation space; at the same time, by using the misalignment height control of the shock absorber and roller, it ensures seamless switching between shock absorption and vibration isolation in working state and roller load-bearing in disassembly state, effectively avoiding mechanism interference; the pin shaft protrusion design prevents installation damage, the integrated reinforcing plate and hoisting hole improve local rigidity and simplify the hoisting process, and the extension plate optimizes the oil filter element layout, shortens the oil circuit and improves oil supply response; finally, relying on the multi-point shock absorption of the front and rear suspension brackets and the plate frame connection, it significantly enhances the installation rigidity and anti-roll capability of the engine unit, which can meet the stringent requirements of high-frequency disassembly and maintenance and stable operation under complex working conditions for multi-power source mining vehicles. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a top view of the overall structure of this utility model;

[0021] Figure 2 This is an isometric view of the engine assembly structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the bottom extension plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall rolling device of this utility model;

[0024] Figure 5 This is a cross-sectional view of the rolling device of this utility model;

[0025] Figure 6 This is an assembly drawing of the rear suspension bracket and rolling device of this utility model;

[0026] Figure 7This is a schematic diagram of the mounting groove for the rear suspension bracket of this utility model;

[0027] Figure 8 This is a side view of the rolling device of this utility model;

[0028] Figure 9 This is an isometric view of the rolling device of this utility model. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 utility model 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 utility model.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] like Figures 1-3As shown, a disassembly device for an engine set of a multi-power source electric wheel mining dump truck includes a frame 1, at least two engine sets 2, a front suspension bracket 3, a rear suspension bracket 4, a rolling device 5, and shock absorbers 6 respectively mounted on the front suspension bracket 3 and the rear suspension bracket 4. The front suspension bracket 3 and the rear suspension bracket 4 are respectively connected to each engine set 2. The rolling device 5 is mounted on the rear suspension bracket 4. An extension plate 13 is provided on the rear crossbeam at the bottom of the frame 1 in the opposite direction of disassembly of the engine set 2. The shock absorber 6 on the front suspension bracket 3 abuts against the front crossbeam at the bottom of the frame 1, and the shock absorber 6 on the rear suspension bracket 4 abuts against the extension plate 13. When the shock absorber 6 on the rear suspension bracket 4 abuts against the extension plate 13, the rolling device 5 is suspended. After the shock absorber 6 on the rear suspension bracket 4 is disassembled, the rolling device 5 abuts against the extension plate 13 and moves along the extension plate 13 in the disassembly direction of the engine set 2, so that the engine set 2 is removed from the interference area above the frame 1.

[0033] By installing a rolling device 5 on the rear suspension bracket 4, adding an extension plate 13 to the rear crossbeam of the frame 1, and cooperating with the detachable design of the shock absorber 6, the engine assembly 2 can be moved horizontally along the extension plate 13 to move away from the interference area of ​​the frame 1. This solves the problem of difficult disassembly and assembly caused by the need for overall hoisting and space constraints when disassembling the engine in multi-power source mode, significantly improving disassembly efficiency. Under normal operating conditions, the front and rear shock absorbers 6 of the engine assembly 2 are in contact with the frame 1 and the extension plate 13, respectively. When it is necessary to disassemble the engine assembly 2, the engine assembly 2 is slightly lifted as a whole, and the front and rear shock absorbers 6 are removed. After disassembly, the rear lifting point of the engine assembly 2 is removed, so that the rolling device 5 falls on the extension plate 13. The engine assembly 2 is then moved horizontally out through the front lifting point. After the engine assembly 2 is completely removed from the upper interference area, the rear lifting point of the engine assembly 2 is reinstalled, and the entire assembly is lifted out, completing the disassembly of the engine assembly 2.

[0034] like Figures 4-9 As shown, to optimize the structural stability of the rolling device 5, the rolling device 5 includes a mounting base 51, mounting brackets 52 disposed on both sides of the mounting base 51, and rollers 53. The mounting brackets 52 and the mounting base 51 are an integral structure. The rollers 53 are rotatably mounted inside the mounting base 51. The mounting brackets 52 are detachably connected to the rear suspension bracket 4. Through the integral mounting base 51 and mounting brackets 52, combined with the detachable connection method, modular installation and maintenance of the rolling device 5 are achieved, reducing assembly complexity.

[0035] To ensure the reliable pressure resistance of the rolling device 5, a mounting slot 41 is provided on the rear suspension bracket 4. The mounting seat 51 extends through the mounting slot 41 from bottom to top, and the top surface of the mounting bracket 52 abuts against the bottom surface of the rear suspension bracket 4. This design, with the mounting seat 51 extending through the mounting slot 41 from bottom to top, allows the top surface of the mounting bracket 52 to abut against the bottom surface of the rear suspension bracket 4, enabling direct transfer of vertical loads to the bracket and improving its compressive strength.

[0036] To facilitate maintenance of the roller 53, the mounting base 51 and mounting bracket 52 are provided with a through roller mounting space 7 along the disassembly direction of the engine assembly 2. This through roller mounting space 7 design allows the roller 53 to be installed or removed from the side, avoiding vertical space limitations during disassembly.

[0037] To avoid interference between the roller 53 and the shock absorber 6, the distance from the bottom of the roller 53 to the bottom surface of the rear suspension bracket 4 is less than the distance from the bottom of the shock absorber 6 on the rear suspension bracket 4 to the bottom surface of the rear suspension bracket 4. By controlling the bottom height of the roller 53 to be lower than the bottom height of the shock absorber 6, the function of switching between the roller 53 being suspended when the shock absorber 6 is working and the roller 53 contacting the extension plate 13 independently when disassembling is achieved.

[0038] To simplify the axial fixing structure of the roller 53, it also includes a pin 8, a bolt 9, a first countersunk hole 10 arranged axially along the roller 53, a second countersunk hole 11 coaxial with the first countersunk hole 10, and a through hole 12 connecting the first countersunk hole 10 and the second countersunk hole 11. The first countersunk hole 10 extends axially inward across the roller 53 from one end face of the mounting base 51, and the second countersunk hole 11 extends axially inward from the other end face of the mounting base 51 along the roller 53 and is connected to the first countersunk hole 10 through the through hole 12. The diameter of the through hole 12 is smaller than the diameter of the bolt head 9. The pin 8 is disposed in the first countersunk hole 10, and the bolt 9 passes through the second countersunk hole 11 and the through hole 12 in sequence before being detachably connected to the pin 8. By using the coaxial countersunk hole and through hole 12 in conjunction with the bolt 9-pin connection, the roller 53 can be quickly assembled and disassembled, reducing maintenance time.

[0039] To prevent installation damage, a protrusion 81 is provided at the end of the pin 8 near the outer side of the mounting base 51. By providing the protrusion 81 at the end of the pin 8, the force is concentrated on the protrusion 81 during hammering installation, avoiding deformation of the mounting base 51 or damage to the threads caused by hammering. Example 1

[0040] To balance lifting and structural strength, the rear suspension bracket 4 is equipped with at least two sets of first reinforcing plates 41, each of which has a lifting hole 411. By integrating the lifting hole 411 into the first reinforcing plates 41, the rear suspension bracket 4 achieves both localized reinforcement and lifting functionality, reducing the need for additional lifting equipment. Example 2

[0041] To optimize the layout of the oil filter assembly, an extension plate 42 is provided on the rear suspension bracket 4. The oil filter assembly 21 of the engine unit 2 is connected to the extension plate 42. The extension plate 42 is provided with a second reinforcing plate 421 that is connected to the first reinforcing plate 41 near the oil filter assembly 21. By connecting the oil filter assembly with the extension plate 42 and setting the second reinforcing plate 421, the filter can be installed close to the engine block, shortening the oil passage to quickly build up oil pressure, while also increasing the rigidity of the extension plate 42. Example 3

[0042] To enhance the rigidity and roll stability of the engine assembly 2, each engine assembly 2 is fitted with a rear suspension bracket 4 on both sides and a front suspension bracket 3 at its front end. At least two shock absorbers 6 are mounted on each of the front and rear suspension brackets 3 and 4. By fixing the front end of each engine assembly 2 to the front suspension bracket 3 and the rear ends to their respective rear suspension brackets 4, and installing at least two shock absorbers 6 on each of the front and rear brackets, a high-rigidity connection frame is formed between the engine assembly 2 and the vehicle frame 1, effectively resisting lateral forces and torsional loads during operation and significantly improving roll stability.

[0043] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily 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 is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-power source electric wheel mining dump truck engine assembly dismounting device, characterized in that: The vehicle includes a frame (1), at least two engine sets (2), a front suspension bracket (3), a rear suspension bracket (4), a rolling device (5), and shock absorbers (6) respectively mounted on the front suspension bracket (3) and the rear suspension bracket (4). The front suspension bracket (3) and the rear suspension bracket (4) are respectively connected to each engine set (2). The rolling device (5) is mounted on the rear suspension bracket (4). An extension plate (13) is provided on the rear crossbeam at the bottom end of the frame (1) in the opposite direction to the engine set (2) after disassembly. The front suspension bracket ( 3) The shock absorber (6) on the frame (1) abuts against the front crossbeam at the bottom of the frame (1), and the shock absorber (6) on the rear suspension bracket (4) abuts against the extension plate (13); when the shock absorber (6) on the rear suspension bracket (4) abuts against the extension plate (13), the rolling device (5) is suspended. After the shock absorber (6) on the rear suspension bracket (4) is disassembled, the rolling device (5) abuts against the extension plate (13) and moves along the extension plate (13) towards the disassembly direction of the engine assembly (2), so that the engine assembly (2) is removed from the interference area above the frame (1).

2. The multi-power source electrically driven wheel mining dump truck engine assembly dismounting device according to claim 1, characterized in that: The rolling device (5) includes a mounting base (51), mounting brackets (52) arranged on both sides of the mounting base (51), and rollers (53). The mounting brackets (52) and the mounting base (51) are an integral structure. The rollers (53) are rotatably installed in the mounting base (51). The mounting brackets (52) are detachably connected to the rear suspension bracket (4).

3. The multi-power source electrically driven wheel mining dump truck engine assembly dismounting device according to claim 2, characterized in that: The rear suspension bracket (4) has an installation slot (41) and the mounting seat (51) passes through the installation slot (41) from bottom to top. The top surface of the mounting bracket (52) abuts against the bottom surface of the rear suspension bracket (4).

4. The multi-power source electrically driven wheel mining dump truck engine assembly dismounting device according to claim 3, characterized in that: The mounting base (51) and mounting bracket (52) are provided with a roller mounting space (7) through the engine assembly (2) in the disassembly direction.

5. The multi-power source electrically driven wheel mining dump truck engine assembly dismounting device according to claim 3, characterized in that: The distance from the bottom of the roller (53) to the bottom surface of the rear suspension bracket (4) is less than the distance from the bottom of the shock absorber (6) on the rear suspension bracket (4) to the bottom surface of the rear suspension bracket (4).

6. The multi-power source electrically powered wheel mine dump truck engine assembly removal device according to claim 2, characterized in that: It also includes a pin (8), a bolt (9), a first countersunk hole (10) arranged along the axial direction of the roller (53), a second countersunk hole (11) coaxial with the first countersunk hole (10), and a through hole (12) connecting the first countersunk hole (10) and the second countersunk hole (11). The first countersunk hole (10) is opened from one end face of the mounting base (51) along the axial direction of the roller (53) and spans the roller (53). The second countersunk hole (11) is opened from the other end face of the mounting base (51) along the axial direction of the roller (53) and is connected to the first countersunk hole (10) through the through hole (12). The diameter of the through hole (12) is smaller than the diameter of the head of the bolt (9). The pin (8) is set in the first countersunk hole (10). After the bolt (9) passes through the second countersunk hole (11) and the through hole (12) in sequence, it is detachably connected to the pin (8).

7. The disassembly device for the engine set of a multi-power source electric wheel mining dump truck according to claim 6, characterized in that: The pin (8) has a protrusion (81) at the end near the outside of the mounting base (51).

8. The multi-power source electrically powered wheel mine dump truck engine assembly removal device according to claim 1, characterized in that: The rear suspension bracket (4) is provided with at least two sets of first reinforcing plates (41), and any one of the first reinforcing plates (41) is provided with a hoisting hole (411).

9. The multi-power source electrically driven wheel mining dump truck engine assembly removal device according to claim 8, characterized in that: The rear suspension bracket (4) is also provided with an extension plate (42), the oil filter element device (21) of the engine assembly (2) is connected to the extension plate (42), and the extension plate (42) is provided with a second reinforcing plate (421) connected to the first reinforcing plate (41) near the oil filter element device (21).

10. The multi-power source electrically powered wheel mine dump truck engine assembly removal device according to claim 1, characterized in that: Each engine group (2) has a rear suspension bracket (4) installed on both sides and a front suspension bracket (3) installed at its front end. At least two shock absorbers (6) are installed on the front suspension bracket (3) and the rear suspension bracket (4).

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