Coaxial two-output power take-off (PTO) structure at rear end of engine

Abstract

The utility model discloses an engine rear end power coaxial two-output PTO structure which comprises a flywheel casing, a PTO supporting end is arranged at the upper end of the flywheel casing, bearings are arranged on the front portion and the rear portion of the PTO supporting end, a hydraulic pump gear shaft is arranged in the middle of the PTO supporting end and connected with the bearings, and an oil passing hole is formed in the middle of the hydraulic pump gear shaft. The front end and the rear end of the PTO supporting end are provided with O-shaped rings, the front end is sealed through a front PTO cover plate, and the rear end is sealed through a rear PTO cover plate. The utility model solves the problems of the multi-power output requirement of the high-horsepower tractor on the engine and the limitation of the whole vehicle structure, and has the advantages of compact structure, good reliability, convenience in installation and the like.

Description

Technical Field

[0001] The utility model relates to the field of engines, in particular to a PTO structure with two coaxial outputs at the rear end of an engine. Background Art

[0002] There are some special equipment on special vehicles, such as the dumping mechanism of dump trucks, the lifting mechanism of cranes, the pump of tank trucks, the refrigeration equipment of refrigerated trucks, etc., which all need the power of the engine to drive. The existing method is to output the power of the engine to drive the special equipment through PTO.

[0003] The existing PTO structures are all one-way output structures, which restrict the structural layout of the entire vehicle and cannot meet the multi-power output of high-horsepower engines.

[0004] The disclosure of the above background technology content is only used to assist in understanding the utility model concept and technical solution of the utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Utility Model Content

[0005] The purpose of the utility model is to provide a coaxial two-output PTO structure at the rear end of the engine, which solves the problem of multiple power output requirements of the engine for high-horsepower tractors and the limitations of the vehicle structure, and has the advantages of compact structure, good reliability, and easy installation.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A PTO structure with two coaxial outputs at the rear end of an engine, characterized in that it includes a flywheel housing, a PTO support end is provided at the upper end of the flywheel housing, bearings are provided at the front and rear of the PTO support end, a hydraulic pump gear shaft is provided in the middle to connect with the bearing, and an oil hole is provided in the middle of the hydraulic pump gear shaft; O-rings are provided at the front and rear ends of the PTO support end, the front end is sealed by a front PTO cover plate, and the rear end is sealed by a rear PTO cover plate.

[0008] Furthermore, the oil hole is communicated with the PTO support end and the interior of the flywheel housing.

[0009] Furthermore, the front and rear ends of the hydraulic pump gear shaft are both provided with splines.

[0010] Furthermore, reinforcing ribs are provided between the flywheel housing and the PTO support end.

[0011] Furthermore, the front PTO cover plate and the rear PTO cover plate are connected to the front and rear ends of the PTO support end by bolts.

[0012] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0013] The utility model mainly includes a flywheel housing, a front PTO cover plate, a rear PTO cover plate, and a hydraulic pump gear shaft; the front PTO power take-off port and the rear PTO power take-off port are respectively provided on the front and rear sides of the flywheel housing; the hydraulic pump gear shaft adopts double bearing support, and the flywheel housing is provided with a hydraulic pump gear lubricating oil hole; the front PTO cover plate and the rear PTO cover plate are detachably connected to the flywheel housing through bolt installation. It solves the problem of high-horsepower tractors' demand for multiple power output of the engine and the limitation of the vehicle structure, and has the advantages of compact structure, good reliability, and convenient installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the PTO support end of the utility model;

[0015] Figure 2 It is a left view of the utility model;

[0016] Figure 3 It is the right view of the utility model. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with specific implementations. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0018] like Figure 1 to Figure 3 As shown, a coaxial two-output PTO structure of the engine rear end power is characterized in that: it includes a flywheel housing 1, a PTO support end 2 is provided at the upper end of the flywheel housing 1, which is used to install a power take-off device at the front and rear, a reinforcing rib 9 is provided between the flywheel housing 1 and the PTO support end 2, which plays a reinforcing role and improves the overall rigidity strength, the PTO support end 2 is provided with bearings 3 at the front and rear, and a hydraulic pump gear shaft 4 is provided in the middle to connect with the bearing 3, and splines 10 are provided at the front and rear ends of the hydraulic pump gear shaft 4 to connect the power output of the power take-off device, an oil hole 5 is provided in the middle of the hydraulic pump gear shaft 4, and the oil hole 5 is connected with the PTO support end 2 and the inside of the flywheel housing 1, and is used to lubricate and cool the hydraulic pump gear shaft 4; the front and rear ends of the PTO support end 2 are provided with O-rings 6 to play a sealing role, the front end is sealed by the front PTO cover plate 7, and the rear end is sealed by the rear PTO cover plate 8, and the front PTO cover plate 7 and the rear PTO cover plate 8 are connected to the front and rear ends of the PTO support end 2 by bolts 11.

[0019] The above contents are further detailed descriptions of the present invention in combination with specific / preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can also make several substitutions or modifications to the described embodiments without departing from the concept of the present invention, and these substitutions or modifications should be deemed to belong to the protection scope of the present invention.

Claims

1. A PTO structure with two coaxial outputs at the rear end of the engine, characterized in that: It includes a flywheel housing, a PTO support end is provided at the upper end of the flywheel housing, bearings are provided at the front and rear of the PTO support end, a hydraulic pump gear shaft is provided in the middle and connected with the bearing, and an oil hole is provided in the middle of the hydraulic pump gear shaft; O-rings are provided at the front and rear ends of the PTO support end, the front end is sealed by the front PTO cover plate, and the rear end is sealed by the rear PTO cover plate.

2. The engine rear end power coaxial dual output PTO structure according to claim 1, characterized in that: The oil hole is communicated with the PTO support end and the inside of the flywheel housing.

3. The engine rear end power coaxial dual output PTO structure according to claim 1, characterized in that: The front and rear ends of the hydraulic pump gear shaft are both provided with splines.

4. The engine rear end power coaxial dual output PTO structure according to claim 1, characterized in that: A reinforcing rib is provided between the flywheel housing and the PTO supporting end.

5. The engine rear end power coaxial dual output PTO structure according to claim 1, characterized in that: The front PTO cover plate and the rear PTO cover plate are connected to the front and rear ends of the PTO support end by bolts.

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