CN213393475U - Rotor type oil pump with built-in pressure regulating device - Google Patents
Rotor type oil pump with built-in pressure regulating device Download PDFInfo
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- CN213393475U CN213393475U CN202021842901.2U CN202021842901U CN213393475U CN 213393475 U CN213393475 U CN 213393475U CN 202021842901 U CN202021842901 U CN 202021842901U CN 213393475 U CN213393475 U CN 213393475U
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Abstract
The utility model relates to a built-in regulator's rotor formula oil pump belongs to the cooling and lubrication technical field of gearbox, solves the oil pump because the performance that the overload leads to descends and the problem of early inefficacy, provides overload protection to the system to guarantee system safety, technical scheme does, at the inside pressure regulating device that increases of rotor formula oil pump for close or communicate the high-pressure oil duct and the low pressure oil duct of oil pump, system pressure reduces and realizes protect function, compares with prior art, the utility model discloses use less space can realize overload protection function to oil pump and derailleur lubricating system, compact structure practices thrift the cost.
Description
Technical Field
The utility model belongs to the technical field of the cooling and lubrication of gearbox, specifically be a built-in regulator's rotor formula oil pump.
Background
With the rapid development of industries such as automobiles, engineering machinery, agricultural machinery and the like in China in recent years, the requirements of a transmission, particularly an automatic transmission, are increasing, and under the guidance of a single initiative, domestic large brands are advancing towards internationalization, so the reliability of the transmission becomes a necessary condition for continuous development of enterprises, the output pressure of an oil pump of the automatic transmission is usually far greater than the actual use pressure, in the using process of the transmission, the system pressure exceeds the allowable pressure of the oil pump or a lubricating system due to the pollution of a hydraulic system of the transmission or the rise of the pressure caused by improper use of a user, and if the oil pump is overloaded for a long time, the performance of the oil pump is reduced, even fails, and meanwhile, the serious fault of the transmission is caused.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a built-in regulator's rotor formula oil pump, and the purpose is solved the oil pump because the performance degradation and the early failure problem that overload leads to provide overload protection to the system to guarantee system safety.
In order to achieve the above purpose, the present invention is achieved by the following technical solutions.
The rotor type oil pump with the built-in pressure regulating device comprises a valve body, wherein an oil passing opening is formed in the valve body, a pressure regulating device is arranged at the oil passing opening and used for closing or communicating a high-pressure oil duct and a low-pressure oil duct of the oil pump, the pressure regulating device comprises a steel ball, an ejector rod and a pressure regulating spring, the pressure regulating spring is arranged between the steel ball and the ejector rod, one end of the pressure regulating spring is connected with the steel ball, the other end of the pressure regulating spring is connected with the ejector rod, and the pre-pressure.
Furthermore, a movable sleeve is sleeved on the ejector rod and used for adjusting the pre-pressure of the pressure regulating spring.
Furthermore, a plurality of holes are formed in the sleeve in the radial direction, the ejector rod is provided with a telescopic protrusion, and the boss on the ejector rod is embedded into the holes in the sleeve.
Furthermore, an internal thread is arranged on the sleeve, an external thread is arranged on the ejector rod, and the external thread on the ejector rod is connected with the internal thread on the sleeve.
Compared with the prior art, the utility model beneficial effect who has is: the pressure adjusting device is arranged in the rotor type oil pump, so that the overload protection function of the oil pump and a transmission lubricating system can be realized by using a small space, the structure is compact, and the cost is saved.
Drawings
FIG. 1 is a schematic structural view of a lubricating oil pump of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic view of the assembly of the carrier rod and the sleeve;
wherein, 1 is the valve body, 2 is for crossing the hydraulic fluid port, 3 is for crossing the hydraulic fluid port, 4 are the overflow hole, 5 are the ejector pin, 6 are pressure regulating spring, 7 are the steel ball, 8 are the sleeve, 9 are the boss, 10 are the hole.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1, the rotor type oil pump with the built-in pressure regulating device comprises a valve body 1, wherein an oil passing opening 3 and an overflow hole 4 are formed in the valve body 1, a pressure regulating device 2 is arranged at the oil passing opening 3 and used for closing or communicating a high-pressure oil duct and a low-pressure oil duct of the oil pump, and the overflow hole is located between the high-pressure oil duct and the low-pressure oil duct and used as a channel for allowing the oil to flow from the high-pressure oil duct to the low-pressure oil duct.
The pressure adjusting device 2 comprises a steel ball 7, an ejector rod 5 and a pressure adjusting spring 6, the pressure of the pressure adjusting spring 6 is adjustable, the surface of the steel ball 7 and the conical surface at the end part of the oil passing port form a reliable sealing belt, when the pressure in the system is normal, the surface of the steel ball 7 is tightly pressed on the sealing belt under the pressure of the pressure adjusting spring 6, the volumetric efficiency of the oil pump is ensured to be more than 80 percent,
the ejector rod 5 is sleeved with a movable sleeve 8, the sleeve 8 is radially provided with three holes 10, the ejector rod 5 is provided with a telescopic boss 9, the holes 10 in the sleeve 8 are matched with the boss 9 on the ejector rod 5 to fix the sleeve 8, the pre-pressure of the pressure regulating spring 6 can be adjusted by adjusting the fixed position of the sleeve 8 and the ejector rod 5, different pressure requirements are realized, and the pre-pressure of the pressure regulating spring 6 is adaptive to the compression amount.
Die-casting aluminum alloy material YL113 is selected for use to the pump body in this embodiment, and the die-casting precision is high, and surface quality is good, and production efficiency is high, and light in weight is fit for mass production, and oil pump inner rotor and outer rotor all adopt powder metallurgy material, and its composition is: c (0.6-1.0), Cu (1.0-3.0) and Fe (the balance), the material has good finishing performance, high surface roughness, high strength and wear resistance, the service life of an oil pump and a transmission is greatly prolonged, a GB/T308-2002 standard part with the diameter of 15 and the precision of 40 is selected as the steel ball 7, the sealing performance and the reliability are high, the purchase cost is low, the material of the pressure regulating spring 6 is commonly used alloy spring steel wire% c2.365Mn-F, the pre-pressure during installation is 66.8N, and the set pressure of a corresponding lubricating system is 0.5 MPa.
When the lubrication system blocks the high-pressure oil passage 11 of the oil pump due to foreign objects or impurities, the operating pressure of the system rises, when the working pressure of the system rises to 0.5MPa and exceeds the prepressing force 66.8N of the pressure regulating spring 6, the high-pressure oil pushes the steel ball 7 to move towards the direction far away from the conical surface of the valve body, meanwhile, the pressure regulating spring 6 starts to be compressed, high-pressure oil flows from the high-pressure oil duct 11 to the low-pressure oil duct 12 through the overflow hole, the pressure of the system is reduced, the protection function is realized, the pressure of the high-pressure oil duct 11 is reduced along with the flow of the high-pressure oil to the low-pressure oil duct 12, when the pressure of the high-pressure oil passage 11 is reduced to be less than 66.8N, the pressure regulating spring 6 pushes the steel ball 7 to move towards the direction close to the conical surface of the valve body until the conical surface is blocked, thereby closing the communication between the high pressure oil passage 11 and the low pressure oil passage 12, and the user can increase or decrease the pre-pressure of the pressure regulating spring by adjusting the position of the sleeve 8 on the carrier rod 5.
The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.
Claims (4)
1. The utility model provides a rotor formula oil pump of built-in pressure regulating device, includes valve body (1), its characterized in that, set up hydraulic fluid port (3) in valve body (1), hydraulic fluid port (3) department sets up pressure regulating device (2), pressure regulating device (2) include steel ball (7), ejector pin (5) and pressure regulating spring (6), pressure regulating spring (6) one end is connected with steel ball (7), and the other end is connected with ejector pin (5), steel ball (7) are used for closing or communicate high-pressure oil duct (11) and low pressure oil duct (12) of oil pump.
2. The rotor type oil pump with the built-in pressure regulating device is characterized in that a movable sleeve (8) is sleeved on the ejector rod (5), and the sleeve (8) is used for regulating the pre-pressure of the pressure regulating spring (6).
3. The rotor type oil pump with the built-in pressure regulating device is characterized in that a plurality of holes (10) are formed in the sleeve (8) in the radial direction, a telescopic boss (9) is arranged on the ejector rod (5), and the boss (9) on the ejector rod (5) is embedded into the holes (10) in the sleeve (8).
4. The rotor type oil pump with the built-in pressure regulating device of claim 2, characterized in that the sleeve (8) is provided with internal threads, the ejector rod (5) is provided with external threads, and the external threads on the ejector rod (5) are connected with the internal threads on the sleeve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021842901.2U CN213393475U (en) | 2020-08-28 | 2020-08-28 | Rotor type oil pump with built-in pressure regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021842901.2U CN213393475U (en) | 2020-08-28 | 2020-08-28 | Rotor type oil pump with built-in pressure regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213393475U true CN213393475U (en) | 2021-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021842901.2U Active CN213393475U (en) | 2020-08-28 | 2020-08-28 | Rotor type oil pump with built-in pressure regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213393475U (en) |
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2020
- 2020-08-28 CN CN202021842901.2U patent/CN213393475U/en active Active
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