Power assembly for engineering vehicle

Abstract

The utility model relates to the field of engineering vehicles, in particular to a power assembly for an engineering vehicle. The powertrain includes: an engine having a first side; a power takeoff is arranged in the engine, and a power takeoff opening of the power takeoff protrudes out of the first side face The gearbox is mounted on the first side surface; the gear pump is mounted on the gearbox and is opposite to the power take-off port; and a transmission shaft is arranged between the gear pump and the power takeoff port, and the transmission shaft is configured to transmit power of the power takeoff to the gear pump. According to the power assembly for the engineering truck, the gear pump is installed on the gearbox and connected with the power take-off shaft through the transmission shaft, the power take-off opening can be prevented from being damaged by the weight of the gear pump, and therefore the power take-off opening is prevented from cracking and oil leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the field of engineering vehicles, in particular to a power assembly for an engineering vehicle. Background Art

[0002] Mining engineering vehicles refer to special vehicles used in mining and construction that are specially designed for mining operating conditions. They mainly include: mining transport vehicles, mining loaders, mining bulldozers, mining drills and other varieties, which are mainly used in mining, transportation and construction operations.

[0003] The hydraulic system of existing mining engineering vehicles is relatively complex, and the required oil pressure and oil flow are relatively large. The gear pumps are mostly two-pump pumps, and the gear pumps themselves are relatively heavy. The traditional layout of the gear pump is mostly directly installed at the power take-off port of the engine flywheel housing. However, due to the relatively harsh operating conditions of mining engineering vehicles and the heavy gear pumps themselves, the existing flywheel housing power take-off port is prone to cracking and oil leakage.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Summary of the invention

[0005] In order to improve or solve the technical problem in the prior art that the gear pump is installed at the power take-off port of the flywheel housing, which leads to cracks and oil leakage at the power take-off port of the flywheel housing, the utility model provides a power assembly for an engineering vehicle. The power assembly includes: an engine, having a first side; a power take-off is arranged in the engine, and the power take-off port of the power take-off protrudes from the first side; a gearbox is installed on the first side; a gear pump is installed on the gearbox and arranged opposite to the power take-off port; a transmission shaft is arranged between the gear pump and the power take-off port, and the transmission shaft is configured to transmit the power of the power take-off to the gear pump.

[0006] The utility model is used in a powertrain for an engineering vehicle, which includes an engine, a gearbox and a gear pump. The gearbox is mounted on the engine, the gear pump is mounted on the gearbox, and the power take-off transmits power to the gear pump through a transmission shaft so that the gear pump can absorb or discharge oil. The utility model is used in a powertrain for an engineering vehicle, which can avoid damage to the power take-off port due to the weight of the gear pump by mounting the gear pump on the gearbox and connecting it to the power take-off port through a transmission shaft, thereby preventing the power take-off port from cracking and leaking oil.

[0007] In the preferred technical solution of the powertrain for engineering vehicles, the gear pump is connected to the transmission shaft via a coupling. Through the above arrangement, the arrangement of the coupling can allow the rigid connection between the gear pump and the transmission shaft to be changed into a flexible connection, thereby preventing the gear pump and the transmission shaft from being damaged when the engine and the reducer vibrate.

[0008] In the preferred technical solution of the powertrain for engineering vehicles, a support beam is installed on the gearbox, and an auxiliary shock absorber is arranged on the support beam, and the auxiliary shock absorber can be connected to the frame of the engineering vehicle; the gear pump is installed on the support beam. Through the above arrangement, the gear pump is fixed on the support beam, and the support beam is installed on the gearbox, which can ensure that the vibration frequency of the gear pump and the motor is the same, thereby reducing the failure rate of the gear pump, the transmission shaft and the coupling.

[0009] In the preferred technical solution of the power assembly for engineering vehicles, a fixed support is provided between the support beam and the gear pump. Through the above arrangement, the fixed support can fix the gear pump more conveniently.

[0010] In the preferred technical solution of the powertrain for engineering vehicles, a suspension assembly for suspending the engine on the frame of the engineering vehicle is also arranged on the engine. Through the above arrangement, the suspension assembly can suspend the engine on the frame to better protect the engine and the gearbox.

[0011] In the preferred technical solution of the powertrain for engineering vehicles, the suspension assembly includes a plurality of legs mounted on the engine and a suspension shock absorber mounted on the legs. Through the above configuration, the arrangement of the suspension shock absorber can reduce the vibration of the engine and the gearbox, thereby protecting the engine and the gearbox.

[0012] In the above preferred technical solution for the powertrain of an engineering vehicle, the legs include a first leg close to the first side, a second leg arranged on both sides of the engine opposite to the first leg, a third leg away from the first side, and a fourth leg arranged on both sides of the engine opposite to the third leg; the first leg and the second leg connect the engine and the gearbox. Through the above arrangement, the first leg and the second rear leg can connect the engine and the gearbox, thereby reducing the bending moment at the power take-off port and improving the reliability of the power take-off port and the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0014] Figure 1 This is a first schematic diagram of an embodiment of the utility model for a power assembly of an engineering vehicle.

[0015] Figure 2 It is another schematic diagram of an embodiment of the utility model for a power assembly of an engineering vehicle.

[0016] List of reference numerals: 1. engine; 11. first side; 12. power take-off port; 2. gearbox; 21. support beam; 22. auxiliary shock absorber; 23. fixed support; 3. gear pump; 4. transmission shaft; 5. coupling; 6. suspension assembly; 61. leg; 611. first leg; 612. second leg; 613. third leg; 614. fourth leg; 62. suspension shock absorber. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0018] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In order to improve or solve the technical problem in the prior art that the gear pump is installed at the power take-off port of the flywheel housing, which leads to cracks and oil leakage at the power take-off port of the flywheel housing, the utility model provides a power assembly for an engineering vehicle. The power assembly includes: an engine 1, having a first side 11; a power take-off is arranged in the engine 1, and the power take-off port 12 of the power take-off protrudes from the first side 11; a gearbox 2 is installed on the first side 11; a gear pump 3 is installed on the gearbox 2 and arranged opposite to the power take-off port 12; a transmission shaft 4 is arranged between the gear pump 3 and the power take-off port 12, and the transmission shaft 4 is configured to transmit the power of the power take-off to the gear pump 3.

[0021] Figure 1 This is a first schematic diagram of an embodiment of the utility model for a power assembly of an engineering vehicle. Figure 2 FIG. 2 is another schematic diagram of an embodiment of the utility model for a powertrain of an engineering vehicle. Figure 1 and Figure 2 As shown, in one or more embodiments, the powertrain of the utility model for an engineering vehicle includes an engine 1 , a gearbox 2 and a gear pump 3 .

[0022] Continue to see Figure 1 and Figure 2 The engine 1 has a first side 11 and a second side opposite to each other. Figure 1 In the orientation shown, the first side 11 is the right side of the engine 1, and the second side is the left side of the engine 1. In one or more embodiments, a power take-off is arranged in the engine 1, the power take-off is rotatably connected to the engine 1, and the power take-off port 12 of the power take-off protrudes from the first side 11. Furthermore, the engine 1 also includes a third side and a fourth side opposite to each other, and a top surface and a bottom surface opposite to each other. Based on Figure 1 In the orientation shown, the third side surface refers to the upward side of the engine 1, the fourth side surface refers to the downward side of the engine 1, the top surface refers to the outward side of the engine 1, and the bottom surface refers to the inward side of the engine 1 (not shown in the figure due to obstruction).

[0023] Continue to see Figure 1 and Figure 2 The gearbox 2 is mounted on the first side surface 11 and is close to the bottom surface of the engine 1. Figure 2 In the orientation shown, the top surface of the engine 1 is higher than the top surface of the gearbox 2. In one or more embodiments, the gearbox 2 is detachably mounted on the engine 1 by bolts. A support beam 21 is provided on the top surface of the gearbox 2, and the support beam 21 is fixedly connected to the gearbox 2 by bolts. Figure 1 In the orientation shown, the support beam 21 extends in the up-down direction. Furthermore, auxiliary shock absorbers 22 are provided at both ends of the support beam 21, and the auxiliary shock absorbers 22 can be connected to the frame of the engineering vehicle. Preferably, the auxiliary shock absorbers 22 are commonly used automobile shock absorbers, and the details are not repeated here. Furthermore, a fixed support 23 is installed above the support beam 21, and the fixed support 23 includes a mounting plate and a support plate connected to the mounting plate. Based on Figure 1 In the orientation shown, the mounting plate extends in the up-down direction. Two support plates are provided, and both mounting plates are provided on the left side of the mounting plate and are respectively close to the upper and lower ends of the mounting plate. Preferably, the mounting plate is roughly in the shape of a right-angled trapezoid.

[0024] Continue to see Figure 1 and Figure 2In one or more embodiments, the gear pump 3 is mounted on a fixed support 23. A transmission shaft 4 is provided between the gear pump 3 and the power take-off port 12, and the transmission shaft 4 transmits the power output of the power take-off to the gear pump 3. Furthermore, a coupling 5 is arranged between the power take-off port 12 and the transmission shaft 4, and between the transmission shaft 4 and the gear pump 3, and the coupling 5 is fixedly connected to the power take-off port 12 and the gear pump 3 through a flange. Preferably, the coupling 5 is a universal coupling 5. Specifically, the transmission shaft 4 and the coupling 5 can be regarded as a whole, and the end of the transmission shaft 4 and the end of the coupling 5 together form a complete coupling 5. When the power take-off rotates, the power take-off port 12 rotates accordingly, driving the transmission shaft 4 to rotate, and the driving gear in the gear pump 3 rotates accordingly to realize the oil suction or oil discharge of the gear pump 3.

[0025] Continue to see Figure 1 and Figure 2 In one or more embodiments, a suspension assembly 6 is further provided on the engine 1. The suspension assembly 6 includes a plurality of legs 61 mounted on the engine 1 and a suspension shock absorber 62 mounted on the legs 61. One suspension shock absorber 62 is connected to a corresponding leg 61. In one or more embodiments, the legs 61 include a first leg 611, a second leg 612, a third leg 613 and a fourth leg 614. The first leg 611 and the second leg 612 are close to and protrude from the first side surface 11, and are fixedly connected to the gearbox 2. The first leg 611 is mounted on the third side surface of the engine 1, and the second leg 612 is mounted on the fourth side surface of the engine 1. The third leg 613 and the fourth leg 614 are close to the second side surface. The third leg 613 is mounted on the third side surface of the engine 1, and the fourth leg 614 is mounted on the fourth side surface of the engine 1. Alternatively, the number of legs 61 can be adjusted according to actual needs, for example, set to 3, 5, etc.

[0026] So far, the technical scheme of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical schemes after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A powertrain for an engineering vehicle, characterized in that: include: An engine (1) having a first side surface (11); a power take-off is arranged in the engine (1), and a power take-off port (12) of the power take-off protrudes from the first side surface (11); A gearbox (2) mounted on the first side surface (11); A gear pump (3) is mounted on the gearbox (2) and arranged opposite to the power take-off port (12); a transmission shaft (4) is provided between the gear pump (3) and the power take-off port (12), and the transmission shaft (4) is configured to transmit the power of the power take-off to the gear pump (3).

2. The powertrain for an engineering vehicle according to claim 1, characterized in that: A support beam (21) is mounted on the gearbox (2), and an auxiliary shock absorber (22) is arranged on the support beam (21), and the auxiliary shock absorber (22) can be connected to the frame of the engineering vehicle; the gear pump (3) is mounted on the support beam (21).

3. The power assembly for an engineering vehicle according to claim 2, characterized in that: A fixed support (23) is provided between the support beam (21) and the gear pump (3).

4. The power assembly for an engineering vehicle according to claim 1, characterized in that: The gear pump (3) is connected to the transmission shaft (4) via a coupling (5).

5. The power assembly for an engineering vehicle according to claim 1, characterized in that: The engine (1) is also provided with a suspension assembly (6) for suspending the engine (1) on the frame of the engineering vehicle.

6. The power assembly for an engineering vehicle according to claim 5, characterized in that: The suspension assembly (6) comprises a plurality of legs (61) mounted on the engine (1) and a suspension shock absorber (62) mounted on the legs (61).

7. The power assembly for an engineering vehicle according to claim 6, characterized in that: The support legs (61) include a first support leg (611) close to the first side surface (11), a second support leg (612) arranged on both sides of the engine (1) opposite to the first support leg (611), a third support leg (613) away from the first side surface (11), and a fourth support leg (614) arranged on both sides of the engine (1) opposite to the third support leg (613); the first support leg (611) and the second support leg (612) connect the engine (1) and the gearbox (2).

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