Diesel engine two-stage hydraulic pump transmission structure

Abstract

The utility model discloses a diesel engine two-stage hydraulic pump transmission structure which comprises a diesel engine gear chamber cover and a gear chamber, a front-end hydraulic pump connector is arranged on the side of the diesel engine gear chamber cover, a front hydraulic gear transmission spline is arranged at the inner end of the front-end hydraulic pump connector, a rear-end hydraulic pump connector is arranged on the side of the gear chamber, and a rear hydraulic gear transmission spline is arranged at the inner end of the rear-end hydraulic pump connector. A front hydraulic gear transmission spline is arranged at the inner end of the front hydraulic pump connector, a rear hydraulic gear transmission spline is arranged at the inner end of the rear hydraulic pump connector, the front hydraulic gear transmission spline and the rear hydraulic gear transmission spline are both connected with a hydraulic pump transmission gear assembly, and the hydraulic pump transmission gear assembly is connected with a multi-stage gear mechanism. The problem that an existing diesel engine does not have a multifunctional interface is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of diesel engine, especially a two-stage hydraulic pump transmission structure of diesel engine. BACKGROUND

[0002] With the requirement of the fourth phase emission regulation of non-road machinery, the major host factories are upgrading the emission of non-road vehicles while upgrading the non-road vehicles to the fourth phase emission regulation in engineering machinery, agricultural machinery and other non-road vehicle types. The old and backward mechanical transmission power output is gradually eliminated because of its low transmission efficiency, large mechanical loss and complex and heavy transmission mechanism. The hydraulic power transmission system is widely used because of its high transmission efficiency and small mechanical loss. At present, with the upgrading of non-road engineering machinery and agricultural machinery, the demand for diesel engines with multifunctional interfaces is becoming more and more important. In order to adapt to the power upgrade of engineering machinery and agricultural machinery vehicles, it is necessary to improve the structure of diesel engines to meet the synchronous upgrade of the power required by engineering machinery and agricultural machinery, that is, to meet the installation requirements of multi-stage hydraulic pump interfaces while keeping the overall vehicle structure unchanged. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a two-stage hydraulic pump transmission structure of diesel engine, which solves the problem that the existing diesel engine does not have a multifunctional interface.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A two-stage hydraulic pump transmission structure of diesel engine, comprising a diesel engine gear chamber cover and a gear chamber, wherein the diesel engine gear chamber cover is provided with a front-end hydraulic pump interface, the inner end of the front-end hydraulic pump interface is provided with a front hydraulic gear transmission spline, the gear chamber is provided with a rear-end hydraulic pump interface, the inner end of the rear-end hydraulic pump interface is provided with a rear hydraulic gear transmission spline, the front hydraulic gear transmission spline and the rear hydraulic gear transmission spline are connected with a hydraulic pump transmission gear assembly, and the hydraulic pump transmission gear assembly is connected with a multi-stage gear mechanism.

[0006] The hydraulic pump power output end with different interface sizes replaces the plunger hydraulic pump that needs to be installed on the flywheel, so that the diesel engine has rich power output interfaces, which can effectively solve the demand of engineering machinery, agricultural machinery and other compatible diesel engines for hydraulic transmission systems.

[0007] As a further optimization of the utility model, the interface sizes of the front-end hydraulic pump interface and the rear-end hydraulic pump interface are two sizes.

[0008] As a further preferred embodiment of the utility model, the multi-stage gear mechanism comprises an idler gear one, a crankshaft gear, an intermediate transmission gear and an idler gear two, the crankshaft gear and the intermediate transmission gear are arranged on both sides below the idler gear one, the crankshaft gear and the intermediate transmission gear are in meshing connection with the idler gear one, and the intermediate transmission gear and the hydraulic pump transmission gear assembly are in meshing connection with both sides of the upper portion of the idler gear two.

[0009] The diesel engine power is transmitted to the hydraulic pump transmission gear assembly through the multi-stage gear train, and the power is output to the hydraulic pump from the front hydraulic gear transmission spline and the rear hydraulic gear transmission spline, so that the demand of the engineering machinery and the agricultural machinery for the multi-stage hydraulic system is solved.

[0010] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects:

[0011] 1. The hydraulic pump power output end with different interface sizes replaces the plunger hydraulic pump which needs to be installed on the flywheel, so that the diesel engine has rich power output interfaces, and the demand of the engineering machinery, the agricultural machinery and the like for the hydraulic transmission system can be effectively solved.

[0012] 2. The power output interfaces of the diesel engine are rich and various, convenient to install, compact in structure and meet the various demands of the vehicle.

[0013] 3. The diesel engine power is transmitted to the hydraulic pump transmission gear assembly through the multi-stage gear train, and the power is output to the hydraulic pump from the front hydraulic gear transmission spline and the rear hydraulic gear transmission spline, so that the demand of the engineering machinery and the agricultural machinery for the multi-stage hydraulic system is solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the front and rear gear chambers of the utility model after being assembled on the diesel engine.

[0015] Figure 2 It is a schematic view of the front gear of the utility model on the diesel engine.

[0016] Figure 3 It is a schematic view of the front gear train shaft side of the utility model on the diesel engine. DETAILED DESCRIPTION

[0017] In order to make the purpose, the technical scheme and the advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] The following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0019] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0020] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Specific embodiment 1:

[0024] Figure 1 、 Figure 2 、 Figure 3A diesel engine two-stage hydraulic pump transmission structure is shown, comprising a diesel engine gear chamber cover 1 and a gear chamber 4, the diesel engine gear chamber cover 1 is provided with a front-end hydraulic pump interface 2, the front-end hydraulic pump interface 2 is provided with a front hydraulic gear transmission spline 3 at the inner end, the gear chamber 4 is provided with a rear-end hydraulic pump interface 7, the rear-end hydraulic pump interface 7 is provided with a rear hydraulic gear transmission spline 6 at the inner end, the front hydraulic gear transmission spline 3 and the rear hydraulic gear transmission spline 6 are connected with a hydraulic pump transmission gear assembly 12, and the hydraulic pump transmission gear assembly 12 is connected with a multi-stage gear mechanism.

[0025] The hydraulic pump power output end with different interface sizes replaces the plunger hydraulic pump which needs to be installed on the flywheel, so that the diesel engine has more abundant power output interfaces, and the demand of the hydraulic transmission system of the engineering machinery, agricultural machinery and the like on the diesel engine can be effectively solved. Embodiment 2

[0027] This embodiment further illustrates the front-end hydraulic pump interface 2 on the basis of the embodiment 1, the interface sizes of the front-end hydraulic pump interface 2 and the rear-end hydraulic pump interface 7 are two sizes. Embodiment 3

[0029] This embodiment further illustrates the multi-stage gear mechanism on the basis of the embodiment 1, the multi-stage gear mechanism comprises an idle gear one 8, a crankshaft gear 9, an intermediate transmission gear 10 and an idle gear two 11, the crankshaft gear 9 and the intermediate transmission gear 10 are arranged on the two sides below the idle gear one 8, the crankshaft gear 9 and the intermediate transmission gear 10 are connected in mesh with the idle gear one 8, and the idle gear two 11 is connected in mesh with the intermediate transmission gear 10 and the hydraulic pump transmission gear assembly 12 on the two sides of the upper portion.

[0030] The diesel engine power is transmitted to the hydraulic pump transmission gear assembly through the multi-stage gear train, and the power is output to the hydraulic pump from the front hydraulic gear transmission spline 3 and the rear hydraulic gear transmission spline 6, so that the demand of the multi-stage hydraulic system of the engineering machinery, agricultural machinery and the like is solved.

[0031] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A two-stage hydraulic pump transmission structure for a diesel engine, comprising a diesel engine gear chamber cover (1) and a gear chamber (4), characterized in that: The diesel engine gear chamber cover (1) is provided with a front hydraulic pump interface (2), the inner end of the front hydraulic pump interface (2) is provided with a front hydraulic gear transmission spline (3), the gear chamber (4) is provided with a rear hydraulic pump interface (7), the inner end of the rear hydraulic pump interface (7) is provided with a rear hydraulic gear transmission spline (6), the front hydraulic gear transmission spline (3) and the rear hydraulic gear transmission spline (6) are both connected to a hydraulic pump transmission gear assembly (12), and the hydraulic pump transmission gear assembly (12) is connected to a multi-stage gear mechanism.

2. The diesel engine two-stage hydraulic pump transmission structure according to claim 1, characterized in that: The interface sizes of the front hydraulic pump interface (2) and the rear hydraulic pump interface (7) are two sizes.

3. The diesel engine two-stage hydraulic pump transmission structure according to claim 1, characterized in that: The multi-stage gear mechanism comprises an idler gear 1 (8), a crankshaft gear (9), an intermediate transmission gear (10) and an idler gear 2 (11). The crankshaft gear (9) and the intermediate transmission gear (10) are respectively arranged on both sides below the idler gear 1 (8). The crankshaft gear (9) and the intermediate transmission gear (10) are both meshed and connected with the idler gear 1 (8). The upper two sides of the idler gear 2 (11) are respectively meshed and connected with the intermediate transmission gear (10) and the hydraulic pump transmission gear assembly (12).

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