CN212004020U

CN212004020U - Novel oil pump motor noise reduction structure

Info

Publication number: CN212004020U
Application number: CN202021162783.0U
Authority: CN
Inventors: 陈海楼; 成才飞
Original assignee: Nanjing Blessed Hydraulic Machinery Co ltd
Current assignee: Nanjing Blessed Hydraulic Machinery Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2020-11-24
Anticipated expiration: 2030-06-19

Abstract

The utility model discloses a novel structure of making an uproar falls in oil pump motor, include the hydraulic pressure mechanism of being connected with the motor, hydraulic pressure mechanism is equipped with the oil circuit, is equipped with oil inlet and oil-out on hydraulic pressure mechanism, realizes the pressure output of hydraulic pressure oil circuit through the impeller of motor main shaft end. Oil pump motor main shaft adopts the structure of combination concatenation formula, including axis of rotation, middleware and transmission shaft three, the link of three coincide each other, and motor main shaft realizes making an uproar through elastic middleware and falls, has still avoided the vibrations that the oil pump motor produced in hydraulic pressure station work simultaneously, improves stability, is favorable to hydraulic pump power output's ride comfort.

Description

Novel oil pump motor noise reduction structure

Technical Field

The utility model belongs to hydraulic equipment, concretely relates to novel structure of making an uproar falls in oil pump motor.

Background

The hydraulic pump is a power element of a hydraulic system, and is an element which is driven by an engine or an electric motor, sucks oil from a hydraulic oil tank, forms pressure oil, discharges the pressure oil and sends the pressure oil to an execution element. The hydraulic pump is divided into a gear pump, a plunger pump, a vane pump and a screw pump according to the structure.

In the existing oil pump, because an engine or a motor is used as a driving unit, power needs to be transmitted in a hydraulic oil circuit, and certain connecting gaps exist among different components. An engine or a motor is used as power output equipment, high-speed operation is often needed for providing strong hydraulic pressure, certain vibration can be generated due to self, a transmission rod between the engine or the motor and a hydraulic station can generate resonance, abrasion of a hydraulic transmission part can be accelerated, and noise is generated at the same time.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a novel structure of making an uproar falls in oil pump motor reduces power pack's resonance and noise in the hydraulic pump.

The technical scheme is as follows: a novel oil pump motor noise reduction structure comprises a hydraulic mechanism and a motor, wherein a motor main shaft is of a combined splicing type structure and comprises a rotating shaft, a middle piece and a transmission shaft, the connecting ends of the rotating shaft, the middle piece and the transmission shaft are of a mutual meshing structure, the transmission shaft extends into the hydraulic mechanism, and sealing pieces are arranged around the motor main shaft; the hydraulic mechanism is internally provided with an oil way, the oil way is provided with an oil inlet and an oil outlet on the hydraulic mechanism, and the pressure output of the hydraulic oil way is realized through an impeller at the main shaft end of the motor.

Furthermore, the intermediate piece is an elastic plum spline.

Furthermore, a hydraulic mechanism of the hydraulic pump is also provided with a hydraulic pressure adjusting device, and the pressure is adjusted by adjusting the hydraulic oil quantity.

Furthermore, the motor spindle consists of a rotating shaft, an intermediate part and a transmission shaft, and the connecting end surfaces between the rotating shaft and the intermediate part are provided with convex or concave structure mutual meshing structures; the rotating shaft and the transmission shaft have the same excircle diameter.

Furthermore, the excircle diameter of the middle part is less than or equal to the excircle diameter of the rotating shaft or the transmission shaft, and the heights of the protruding or sunken parts of the rotating shaft and the transmission shaft are less than or equal to half of the thickness of the middle part.

Furthermore, the cavities of the meshing parts of the rotating shaft, the intermediate piece and the transmission shaft are filled with lubricating oil.

Has the advantages that: compared with the prior art, the utility model provides a three-section structure of motor through combination concatenation formula of hydraulic pump has effectively reduced the transmission of vibrations, adopts elastic middleware to further reduce the production of noise simultaneously. On the other hand, the utility model discloses a set up the rigid connection between motor spindle and the hydraulic pressure mechanism into elastic connection, convenient nimble equipment and maintenance, the life of extension equipment.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the hydraulic station of the present invention;

fig. 2 is a schematic view of the motor spindle according to the present invention;

FIG. 3 is a schematic structural view of the intermediate member of the present invention being a plum-blossom spline;

FIG. 4 is a top view of a plum-spline;

fig. 5 is a side view of a plum-spline.

Detailed Description

For the purpose of explaining the technical solution disclosed in the present invention in detail, the following description is further made with reference to the accompanying drawings and specific embodiments.

The utility model provides a novel structure of making an uproar falls in oil pump motor for hydraulic pressure station realizes mainly that hydraulic transmission mainly includes hydraulic pressure mechanism and motor through the motor. The motor is a power mechanism of the hydraulic pump, and the hydraulic mechanism realizes hydraulic oil drive through an impeller at one end of a motor main shaft, so that the output of hydraulic power is controlled. The present invention relates to a hydraulic pump, and more particularly to a motor spindle and a hydraulic control method for a hydraulic pump.

As shown in FIG. 1, the whole structure of the hydraulic pump of the present invention, the right end of the hydraulic pump is a power unit, i.e. the motor provides power. The main shaft of the motor extends into the hydraulic mechanism on the left side, an oil path is arranged in the hydraulic mechanism to rotate, and the power transmission of the power output mechanism is controlled after the internal hydraulic oil is pressurized, for example, the extension control of the hydraulic telescopic component. The hydraulic oil pump mainly comprises a motor spindle 1, an oil inlet 2, an oil outlet 3, a hydraulic size adjusting device 4 and a sealing element 5. In the hydraulic mechanism, the oil inlet 2 and the oil outlet 3 are used for connecting an oil cavity when the hydraulic pump is used in a hydraulic station or are externally connected with other equipment for providing pressure, for example, the combination of the two hydraulic pumps is practical, the oil way is spliced, and the power output is increased. For the motor, in order to improve the smoothness of power output, lubricating oil can be filled in the cavity of the connecting part of the motor main shaft 1 and the hydraulic mechanism and around the rotating shaft, a sealing piece 5 is adopted to prevent leakage, an oil cavity is formed at the left end of the figure of the motor, and lubrication, shock absorption and noise reduction are provided for the three-section structure of the motor main shaft.

Fig. 2 is a schematic structural diagram of the motor spindle according to the present invention. The motor spindle 1 can be disassembled into a rotating shaft 101, an intermediate piece 103 and a transmission shaft 102. Connected to the rotating shaft 101 is the rotor of the motor. Then assembled in sequence are the intermediate piece 103 and the drive shaft 102. When the intermediate member 103 is an elastic member, a plum-spline is used in this embodiment, as shown in fig. 3 to 5.

It should be noted that, for the three-section structure of the motor spindle 1, preferably, the intermediate member 103 may be structurally complementary to the rotating shaft 101 and the transmission shaft 102 after being assembled, and takes the form of a spindle with a cylindrical structure, that is, the outer diameter of the intermediate member 103 is equal to the outer diameter of the rotating shaft 101 and the transmission shaft 102. However, the intermediate member 103 may be an insert member or a protruding connection, which is divided into two cases where the outer diameter of the intermediate member 103 is larger or smaller than the rotating shaft 101 and the transmission shaft 102. When the thickness of the intermediate member 103 is larger than the thickness of the rotating shaft 101 and the transmission shaft 102, one end of the rotating shaft 101 is engaged with one side of the intermediate member 103, and the other end of the intermediate member 103 is engaged with one end of the transmission shaft 102, in this case, both sides of the intermediate member 103 may have a protrusion or a recess structure engaged with the rotating shaft 101 or the transmission shaft 102, respectively. The rotating shaft 101 or the transmission shaft 102 has no requirement of corresponding convex or concave parts. When the thickness of the intermediate piece 103 is smaller, the intermediate piece is embedded to form a structure similar to a mortise and tenon, firstly, the end faces of the rotating shaft 101 and the transmission shaft 102 can be attached, and then the intermediate piece 103 can be embedded into the middle of the intermediate piece. After the combination and splicing are completed, the intermediate member 103 is not visible, and in the case that the driving shaft 101 and the transmission shaft 102 are cylindrical, the motor spindle is presented as a cylindrical structure.

As another embodiment, a through hole may be added in the middle of the three-section component of the motor spindle, and the through hole may be made of a cylindrical metal component and provided with lubrication, which can ensure that the rotating shaft 101, the transmission shaft 102 and the intermediate component 103 are in the same horizontal line, and overcome the generation of vibration to some extent.

The utility model discloses to the improvement of oil pump motor the control effect of motor in oil pump and hydraulic equipment has been improved, other structures that hard propagation that has slowed down motor self vibrations arouses are not hard up, also influence the output and the control of oil pump power, through the motor structure that provides, have also prolonged the use longevity face of motor, and the lubricating oil that fills in the main shaft cavity can also play shock attenuation, give sound insulation, lubricated and damped effect.

Claims

1. The utility model provides a novel structure of making an uproar falls in oil pump motor, includes hydraulic pressure mechanism and motor, its characterized in that: the motor spindle (1) is of a combined splicing structure and comprises a rotating shaft (101), an intermediate piece (103) and a transmission shaft (102), the connecting ends of the rotating shaft, the intermediate piece and the transmission shaft are of a mutual engagement structure, the transmission shaft (102) extends into the hydraulic mechanism, and sealing pieces (5) are arranged on the periphery of the motor spindle (1); the hydraulic mechanism is internally provided with an oil way, the oil way is provided with an oil inlet (2) and an oil outlet (3) on the hydraulic mechanism, and the pressure output of hydraulic oil in the oil way is controlled through an impeller at one end of the motor spindle (1).

2. The oil pump motor noise reduction structure according to claim 1, characterized in that: the intermediate piece (103) is an elastic plum spline.

3. The oil pump motor noise reduction structure according to claim 1, characterized in that: the motor spindle (1) consists of a rotating shaft (101), an intermediate piece (103) and a transmission shaft (102), and the connecting end surfaces between the rotating shaft and the intermediate piece are provided with convex or concave structures which are mutually meshed.

4. The oil pump motor noise reduction structure according to claim 3, characterized in that: the diameters of the outer circles of the rotating shaft (101) and the transmission shaft (102) are the same.

5. The oil pump motor noise reduction structure according to claim 3, characterized in that: the excircle diameter of the middle piece (103) is less than or equal to the excircle diameter of the rotating shaft (101) or the transmission shaft (102), and the height of the convex or concave parts of the rotating shaft (101) and the transmission shaft (102) is less than or equal to half of the thickness of the middle piece (103).

6. The oil pump motor noise reduction structure according to claim 1, characterized in that: and lubricating oil is filled in the cavities of the meshing parts of the rotating shaft (101), the intermediate piece (103) and the transmission shaft (102).

7. The oil pump motor noise reduction structure according to claim 1, characterized in that: and a hydraulic mechanism arranged at one section of the motor spindle (1) is also provided with a hydraulic size adjusting device (4), and the pressure size is adjusted by adjusting the hydraulic oil quantity.