CN212869311U

CN212869311U - Oil pump with support ring for heavy vehicle engine

Info

Publication number: CN212869311U
Application number: CN202021812289.4U
Authority: CN
Inventors: 邓鹏辉; 许仲秋; 刘光明; 佘笑梅
Original assignee: Hunan Oil Pump Co Ltd
Current assignee: Hunan Oil Pump Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-04-02
Anticipated expiration: 2030-08-26

Abstract

The oil pump comprises a pump body, a pump cover, a pump shaft and a driving gear, wherein one end of the pump body is fixedly connected with a disc used for being assembled with an engine, a through hole used for enabling an engine crankshaft to stretch into is formed in the center of the disc, one end of the pump shaft stretches out of the pump body, penetrates through the disc and is connected with the driving gear, a supporting ring used for contacting the engine is sleeved on the outer peripheral surface of the disc, and the supporting ring has elasticity and is thicker than the disc. The utility model discloses can reduce the vibration of oil pump and the noise that produces when its operation to a great extent.

Description

Oil pump with support ring for heavy vehicle engine

Technical Field

The utility model belongs to the technical field of the oil pump technique and specifically relates to indicate a heavy-duty car engine oil pump of area support ring.

Background

The existing diesel engine for heavy vehicles is complex in working condition, large in impact, large in vibration and large in noise. Generally, the engine is equipped with an external oil pump, on one hand, the engine is easy to drive the oil pump to vibrate, so that the operation of the oil pump is influenced to a certain extent, on the other hand, the oil pump is one of important noise sources, and the noise generated by the oil pump is very obvious in the working process. However, the oil pump and the diesel engine for heavy vehicles are directly assembled and contacted in a threaded connection mode at present, so that the problems of vibration and noise are difficult to solve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take oil pump for heavy-duty car engine of support ring to reduce the vibration of oil pump and the noise that produces when its operation to a great extent.

In order to solve the technical problem, the utility model discloses a following technical scheme: the oil pump with the support ring for the heavy vehicle engine comprises a pump body, a pump cover, a pump shaft and a driving gear, wherein one end of the pump body is fixedly connected with a disc used for being assembled with the engine, a through hole used for enabling an engine crankshaft to stretch into is formed in the center of the disc, one end of the pump shaft stretches out of the pump body, penetrates through the disc and is connected with the driving gear, the support ring used for contacting the engine is sleeved on the outer peripheral surface of the disc, and the support ring has elasticity and is thicker than the disc.

Preferably, the support ring includes by inside to outside steel ring, rubber circle and the aluminium alloy circle that sets gradually, the thickness of steel ring and the thickness of aluminium alloy circle all are less than the thickness of rubber circle.

More preferably, the support ring and the disc are in press fit connection in an interference fit mode.

More preferably, the disc and the pump body are of an integrally formed structure, the disc is provided with a plurality of threaded holes, and positioning sleeves are further arranged in the two threaded holes.

More preferably, an oil suction pipe assembly for communicating with an oil suction area of the pump body is mounted on the disc, and the oil suction pipe assembly and the driving gear are located on the same side of the disc.

More preferably, a pump gear in transmission connection with the driving gear is arranged in an inner cavity of the pump body, a safety valve is further arranged on one side of the pump body, a groove is formed in the inner end face of the pump cover along the edge of the inner end face of the pump cover, and a sealing ring is clamped in the groove.

More preferably, a closed shaft hole for accommodating the pump shaft is formed in the inner end surface of the pump cover, an oil storage tank is arranged on the inner end surface of the pump cover corresponding to the oil discharge area of the pump body, and a lubricating oil tank is communicated between the oil storage tank and the shaft hole.

Additionally, the utility model also provides a processing method of the above-mentioned support ring in the heavy vehicle engine oil pump of taking the support ring, it includes following step:

firstly, processing the inner wall surface of the support ring blank to obtain a prefabricated support ring.

And secondly, the pre-processing support ring is pressed on the peripheral surface of the disc in an interference fit connection mode, so that the pre-processing support ring and the oil pump form a workpiece to be processed integrally.

And thirdly, clamping the workpiece to be processed on a clamp.

And fourthly, mounting the clamp into a machine tool, and machining the outer wall surface of the pre-machining support ring in the workpiece to be machined.

And fifthly, taking out the processed workpiece to finish processing the support ring.

The beneficial effects of the utility model reside in that: the elastic support ring is sleeved on the outer peripheral surface of the disc, so that the outer peripheral surface of the support ring can contact with the engine after the disc and the engine are assembled together, the amplitude and the energy of vibration brought by the engine can be absorbed and reduced to a great extent, and the noise generated when the oil pump runs is reduced.

Drawings

Fig. 1 is a schematic overall structure diagram in an embodiment of the present invention;

FIG. 2 is a bottom view of the overall structure in the example;

FIG. 3 is an exploded view of the entire structure in the embodiment;

FIG. 4 is a schematic sectional view of the positioning sleeve in the embodiment;

fig. 5 is a schematic structural diagram of a pump cover in an embodiment.

The reference signs are:

1-pump body 2-pump cover 3-pump shaft

4-driving gear 5-disc 5 a-through hole

5 b-threaded hole 5 c-positioning sleeve 6-supporting ring

6 a-steel ring 6 b-rubber ring 6 c-aluminum alloy ring

7-oil suction pipe assembly 8-pump gear 9-safety valve

10-sealing ring 11-shaft hole 12-oil storage tank

13-lubricating oil groove.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

It should be noted that, in the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, in the present disclosure, unless explicitly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1-3, the oil pump for heavy-duty vehicle engine with a support ring comprises a pump body 1, a pump cover 2, a pump shaft 3 and a driving gear 4, wherein one end of the pump body 1 is fixedly connected with a disc 5 for assembling with an engine, a positioning hole or a positioning groove matched with a part of the disc 5 is usually arranged on an engine cylinder body, a through hole 5a for an engine crankshaft to extend into is arranged in the center of the disc 5, one end of the engine crankshaft is usually just extended into the through hole 5a and a corresponding crankshaft oil seal can be arranged in the through hole 5a, one end of the pump shaft 3 is extended out of the pump body 1 and penetrates the disc 5 to be connected with the driving gear 4, namely, the pump body 1 and the driving gear 4 are respectively positioned at two sides of the disc 5, the outer circumferential surface of the disc 5 is sleeved with the support ring 6 for contacting with, after the disc 5 is installed, part of the outer wall surface or the whole outer wall surface of the support ring 6 can abut against the inner wall surface of a corresponding positioning hole or positioning groove on the engine cylinder body.

According to the oil pump with the support ring for the heavy vehicle engine, the elastic support ring 6 is sleeved on the outer peripheral surface of the disc 5, after the disc 5 and the engine are assembled together, the outer peripheral surface of the support ring 6 can be in contact with the engine, so that the support ring 6 is subjected to a restraining force in the radial direction, the elastic material improves the integral natural frequency of the oil pump, resonance of the oil pump and the engine is avoided, the amplitude and the energy of vibration caused by the engine can be absorbed and reduced to a great extent, noise generated during operation of the oil pump is reduced, and fluctuation of oil pressure in the oil pump can be reduced to a certain extent due to reduction of vibration.

Preferably, as shown in fig. 4, the support ring 6 includes a steel ring 6a, a rubber ring 6b and an aluminum alloy ring 6c which are sequentially arranged from inside to outside, the thickness of the steel ring 6b and the thickness of the aluminum alloy ring 6c are both smaller than the thickness of the rubber ring 6b, the rubber ring 6b has a certain damping effect, the effect of absorbing and reducing the amplitude and the energy of the vibration caused by the engine is better, and the inside and the outside of the rubber ring 6b are respectively reinforced by the steel ring 6a and the aluminum alloy ring 6c, so that the whole structure of the support ring 6 is firm and reliable.

More preferably, the support ring 6 and the disc 5 are press-fit connected in an interference fit manner, so that the support ring 6, the disc 5 and the whole oil pump can be integrated into a whole, and the oil pump is convenient to assemble.

More preferably, the disc 5 and the pump body 1 are of an integrally formed structure, the disc 5 is provided with a plurality of threaded holes 5b, two of the threaded holes 5b are further provided with positioning sleeves 5c, and the positioning sleeves 5c can be in positioning fit with corresponding positioning pins and other structures on an engine, so that the assembly and connection are more convenient.

On the basis, the oil pump of the embodiment further comprises an oil suction pipe assembly 7 arranged on the disc 5 and used for communicating an oil suction area of the pump body 1, the oil suction pipe assembly 7 and the driving gear 4 are located on the same side of the disc 5, a pump gear 8 in transmission connection with the driving gear 4 is arranged in an inner cavity of the pump body 1, a safety valve 9 is further arranged on one side of the pump body 1, a groove is formed in the inner end surface of the pump cover 2 along the edge of the inner end surface, and a sealing ring 10 is clamped in the groove to improve the sealing effect between the pump body 1 and the pump cover. And the inner end surface of the pump cover 2 is provided with a closed shaft hole 11 for accommodating the pump shaft 3, an oil storage tank 12 (shown in fig. 5) is arranged at a position corresponding to an oil discharge area of the pump body 1 on the inner end surface of the pump cover 2, and a lubricating oil groove 13 is communicated between the oil storage tank 12 and the shaft hole 11, so that a certain lubricating effect can be achieved on the shaft hole 11 and the pump shaft 3.

In addition, the present embodiment further provides a process method for processing the support ring in the oil pump for the heavy vehicle engine with the support ring, which includes the following steps:

And secondly, the pre-processing support ring is pressed on the peripheral surface of the disc 5 in an interference fit connection mode, so that the pre-processing support ring and the oil pump form a workpiece to be processed integrally.

And thirdly, clamping the workpiece to be processed on the clamp.

According to the process method, the inner wall surface of the support ring blank is processed separately and then is pressed together with the disc 5, and then the outer wall surface of the support ring is processed, so that the situation that the support ring 6 is seriously deformed in size due to the fact that the support ring blank is integrally processed and then is pressed together with the disc 5 can be effectively avoided, the size tolerance of the support ring 6 can be guaranteed to meet the requirement and the installation quality of the oil pump, and the outer diameter of the support ring 6 and the concentricity of the through holes 5a are enabled to be in a qualified range.

The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.

In order to make it easier for those skilled in the art to understand the improvement of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and in order to clarify, some other elements have been omitted from this document, those skilled in the art should recognize that these omitted elements may also constitute the content of the present invention.

Claims

1. Take oil pump for heavy-duty car engine of support ring, including the pump body (1), pump cover (2), pump shaft (3) and drive gear (4), its characterized in that: the one end fixedly connected with of the pump body (1) is used for disc (5) with the engine assembly, through-hole (5 a) that are used for supplying the engine crankshaft to stretch into are offered at the center of disc (5), the one end of pump shaft (3) stretches out and passes disc (5) and be connected with drive gear (4) again from the pump body (1), the cover is equipped with support ring (6) that is used for contacting the engine on the outer peripheral face of disc (5), support ring (6) have elasticity and its thickness is greater than the thickness of disc (5).

2. The oil pump for a heavy vehicle engine with a support ring according to claim 1, characterized in that: the support ring (6) includes by interior steel ring (6 a), rubber circle (6 b) and the aluminium alloy circle (6 c) that sets gradually outward, the thickness of steel ring (6 a) and the thickness of aluminium alloy circle (6 c) all are less than the thickness of rubber circle (6 b).

3. The oil pump for a heavy vehicle engine with a support ring according to claim 1, characterized in that: the support ring (6) is connected with the disc (5) in a press fit mode in an interference fit mode.

4. The oil pump for a heavy vehicle engine with a support ring according to claim 1, characterized in that: disc (5) and the pump body (1) structure as an organic whole, be equipped with a plurality of screw holes (5 b) on disc (5), still be equipped with position sleeve (5 c) among two wherein screw holes (5 b).

5. The oil pump for a heavy vehicle engine with a support ring according to claim 4, characterized in that: the pump is characterized in that a pump gear (8) in transmission connection with the driving gear (4) is arranged in an inner cavity of the pump body (1), a safety valve (9) is further arranged on one side of the pump body (1), a groove is formed in the inner end face of the pump cover (2) along the edge of the inner end face, and a sealing ring (10) is clamped in the groove.

6. The oil pump for a heavy vehicle engine with a support ring according to claim 5, characterized in that: the pump cover is characterized in that a closed shaft hole (11) used for containing the pump shaft (3) is formed in the inner end face of the pump cover (2), an oil storage tank (12) is arranged at a position, corresponding to an oil discharge area of the pump body (1), on the inner end face of the pump cover (2), and a lubricating oil groove (13) is communicated between the oil storage tank (12) and the shaft hole (11).