High-pressure pump crankshaft convenient to lubricate

Abstract

The utility model relates to the technical field of high-pressure pump crankshafts, and discloses a high-pressure pump crankshaft convenient to lubricate, which comprises a crankshaft main body, the crankshaft main body comprises a main journal, a sealing journal, connecting journals, connecting separation blades and a gear journal, a plurality of connecting separation blades are arranged on the outer surface of the main journal, and the connecting journals are arranged between two adjacent connecting separation blades. A sealing shaft neck is arranged at one end of the main shaft neck, a gear shaft neck is arranged at the other end of the main shaft neck, an oil storage groove is formed in the outer surface of the connecting shaft neck, a plurality of oil outlet holes are formed in the inner bottom of the oil storage groove, one end of each oil outlet hole penetrates through the connecting shaft neck and extends towards the outer side, and oil storage sponge is installed in the oil storage groove. Lubricating oil can be injected into the oil storage tank through the oil inlet pipe, meanwhile, the oil storage sponge, the oil outlet hole and the oiling sponge are used in cooperation, lubricating oil can be smeared in time for lubrication, abrasion of a connecting journal of the crankshaft body is avoided, and the service life of the crankshaft body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure pump crankshafts, in particular to a high-pressure pump crankshaft which is easy to lubricate. Background Art

[0002] The crankshaft of the high-pressure pump is the most important component in the high-pressure pump. The crankshaft outputs and drives other accessories on the high-pressure pump to work. The crankshaft is subjected to the combined effects of the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force, which makes the crankshaft subject to bending and torsional loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the journal surface must be wear-resistant, work evenly and have good balance.

[0003] The utility model patent application document with publication number "CN220705858U" discloses a high-pressure pump, which is mainly composed of a primary cylinder, a secondary cylinder, a high-pressure rod, a crankshaft and a reduction mechanism. This technical solution solves the technical problems in the prior art that the high-pressure pump has slow starting and the crankshaft has insensitive speed adjustment due to the small output torque of the motor.

[0004] The high-pressure pump disclosed in the above document has the following defects: when the crankshaft of the high-pressure pump is in use, it needs oil lubrication due to the continuous friction of the journal, but the crankshaft in the above document is not convenient for oil lubrication at all times, which causes wear of the crankshaft and reduces the service life of the crankshaft.

[0005] It can be seen from this that the existing high-pressure pump crankshaft does not have a structure that is easy to lubricate, and it is necessary to improve the existing deficiencies and provide a high-pressure pump crankshaft that is easy to lubricate. Utility Model Content

[0006] The utility model aims to provide a high-pressure pump crankshaft which is easy to lubricate, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model discloses a high-pressure pump crankshaft which is easy to lubricate, comprising a crankshaft body, the crankshaft body comprising a main journal, a sealing journal, a connecting journal, a connecting baffle and a gear journal, the outer surface of the main journal is provided with a plurality of connecting baffles, a connecting journal is provided between two adjacent connecting baffles, one end of the main journal is provided with a sealing journal, the other end of the main journal is provided with a gear journal, an oil storage groove is provided on the outer surface of the connecting journal, a plurality of oil outlet holes are provided on the inner bottom of the oil storage groove, one end of the oil outlet hole penetrates the connecting journal and extends outward, An oil storage sponge is installed inside the oil storage tank, an oiling sponge is installed inside the oil outlet hole, a retaining ring is fixedly connected to the inside of the oil storage tank, an oil inlet pipe is provided on the upper surface of the retaining ring, and the lower surface of the retaining ring abuts against the upper surface of the oil storage sponge, an external thread is provided on the outer surface of the oil inlet pipe, a cover body is installed on the oil inlet pipe through the external thread, a sealing block is provided on the lower surface of the cover body, the outer surface of the sealing block abuts against the inner surface of the oil inlet pipe, a hexagonal wrench slot is provided on the upper surface of the cover body, and one end of the hexagonal wrench slot extends to the inside of the sealing block.

[0009] Furthermore, a sealing plate is installed on the upper surface of the cover body, and the cover body and the retaining ring can be sealed by the provided sealing plate to prevent the entry of dust and impurities, thereby extending the service life of the cover body and the retaining ring.

[0010] Furthermore, a retaining spring is installed on the upper surface of the sealing plate, and the position of the sealing plate can be fixed by the retaining spring to prevent the sealing plate from being separated from the inside of the oil storage tank and losing its use effect during use.

[0011] Furthermore, the outer surface of the crankshaft body is coated with a wear-resistant coating. The wear-resistant coating provided on the outer surface of the crankshaft body can make the crankshaft body have a better wear-resistant effect and extend the service life of the crankshaft body.

[0012] The utility model has the following beneficial effects:

[0013] (1) The utility model can inject lubricating oil into the oil storage tank through the oil inlet pipe. At the same time, through the coordinated use of the oil storage sponge, the oil outlet hole and the oiling sponge, the lubricating oil can be applied in time for lubrication, thereby avoiding wear of the connecting journal of the crankshaft body and extending the service life of the crankshaft body.

[0014] (2) The utility model can seal the cover body and the retaining ring by means of the sealing plate, thereby preventing dust and impurities from entering and extending the service life of the cover body and the retaining ring.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is an exploded view of the local structure of the utility model;

[0019] Figure 3 It is a partial structural cross-sectional view of the utility model;

[0020] Figure 4 This is a cross-sectional view of the connecting journal structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the retaining ring and the cover body of the utility model;

[0022] Figure 6 This is a schematic diagram of the cover structure of the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] In the figure: 1. crankshaft body; 101. main journal; 102. sealing journal; 103. connecting journal; 10301. oil storage tank; 10302. oil outlet hole; 104. connecting baffle; 105. gear journal; 2. oil storage sponge; 3. oiling sponge; 4. retaining ring; 401. oil inlet pipe; 40101. external thread; 5. cover body; 501. sealing block; 502. hexagonal wrench slot; 6. sealing plate; 7. retaining ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 - Figure 6As shown, the utility model is a high-pressure pump crankshaft that is easy to lubricate, including a crankshaft body 1, the crankshaft body 1 includes a main journal 101, a sealing journal 102, a connecting journal 103, a connecting baffle 104 and a gear journal 105, the outer surface of the main journal 101 is provided with a plurality of connecting baffles 104, a connecting journal 103 is provided between two adjacent connecting baffles 104, one end of the main journal 101 is provided with a sealing journal 102, the other end of the main journal 101 is provided with a gear journal 105, an outer surface of the connecting journal 103 is provided with an oil storage groove 10301, the inner bottom of the oil storage groove 10301 is provided with a plurality of oil outlet holes 10302, one end of the oil outlet hole 10302 passes through the connecting journal 103 and is outwardly The oil storage tank 10301 is extended sideways, an oil storage sponge 2 is installed inside the oil storage tank 10301, an oiling sponge 3 is installed inside the oil outlet hole 10302, a retaining ring 4 is fixedly connected to the inside of the oil storage tank 10301, an oil inlet pipe 401 is provided on the upper surface of the retaining ring 4, and the lower surface of the retaining ring 4 abuts against the upper surface of the oil storage sponge 2, an external thread 40101 is provided on the outer surface of the oil inlet pipe 401, a cover body 5 is installed on the oil inlet pipe 401 through the external thread 40101, a sealing block 501 is provided on the lower surface of the cover body 5, the outer surface of the sealing block 501 abuts against the inner surface of the oil inlet pipe 401, a hexagonal wrench slot 502 is provided on the upper surface of the cover body 5, and one end of the hexagonal wrench slot 502 extends to the inside of the sealing block 501.

[0027] A sealing plate 6 is installed on the upper surface of the cover body 5 , and the cover body 5 and the retaining ring 4 can be sealed by the sealing plate 6 to prevent dust and impurities from entering, thereby extending the service life of the cover body 5 and the retaining ring 4 .

[0028] A retaining spring 7 is installed on the upper surface of the sealing plate 6. The retaining spring 7 can be used to fix the position of the sealing plate 6 to prevent the sealing plate 6 from being separated from the inside of the oil storage tank 10301 and losing its use effect during use.

[0029] The outer surface of the crankshaft body 1 is coated with a wear-resistant coating. The wear-resistant coating provided on the outer surface of the crankshaft body 1 can make the crankshaft body 1 have a better wear-resistant effect and extend the service life of the crankshaft body 1.

[0030] When in use, first use the circlip pliers to remove the circlip 7 from the inside of the oil storage tank 10301 to cancel the fixing effect of the sealing plate 6, then remove the sealing plate 6 from the inside of the oil storage tank 10301 to expose the cover body 5, then place the hexagonal wrench inside the hexagonal wrench slot 502, and turn the hexagonal wrench counterclockwise to cancel the fixed installation of the cover body 5 and the oil inlet pipe 401, then separate the cover body 5 from the oil inlet pipe 401, and inject lubricating oil into the inside of the oil storage tank 10301 through the oil inlet pipe 401, so that the oil storage sponge 2 is gradually soaked, and when the oil storage sponge 2 is completely soaked, stop injecting lubricating oil, then place the cover body 5 directly above the oil inlet pipe 401, and then place the hexagonal wrench inside the hexagonal wrench slot 502. , turn the hexagonal wrench clockwise to fix the cover body 5 and the oil inlet pipe 401, then place the sealing plate 6 just above the cover body 5, and use the circlip pliers to place the circlip 7 just above the sealing plate 6, so that the circlip 7 fixes the sealing plate 6, and then install the crankshaft body 1 inside the high-pressure pump. During the rotation of the crankshaft body 1, the oil storage sponge 2, the oil outlet hole 10302 and the oiling sponge 3 are used together to apply lubricating oil in time to avoid wear of the connecting journal 103 of the crankshaft body 1 and extend the service life of the crankshaft body 1. At the same time, the wear-resistant coating provided on the outer surface of the crankshaft body 1 can make the crankshaft body 1 have better wear resistance, thereby further extending the service life of the crankshaft body 1.

[0031] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-pressure pump crankshaft that is easy to lubricate, comprising a crankshaft body (1), characterized in that: The crankshaft body (1) comprises a main journal (101), a sealing journal (102), a connecting journal (103), a connecting baffle (104) and a gear journal (105); a plurality of connecting baffles (104) are provided on the outer surface of the main journal (101); a connecting journal (103) is provided between two adjacent connecting baffles (104); a sealing journal (102) is provided at one end of the main journal (101); and a gear journal (105) is provided at the other end of the main journal (101); An oil storage groove (10301) is provided on the outer surface of the connecting shaft neck (103), a plurality of oil outlet holes (10302) are provided on the inner bottom of the oil storage groove (10301), one end of the oil outlet hole (10302) penetrates the connecting shaft neck (103) and extends outward, an oil storage sponge (2) is installed inside the oil storage groove (10301), an oil coating sponge (3) is installed inside the oil outlet hole (10302), a retaining ring (4) is fixedly connected inside the oil storage groove (10301), an oil inlet pipe (401) is provided on the upper surface of the retaining ring (4), and the lower surface of the retaining ring (4) is in contact with the upper surface of the oil storage sponge (2); The outer surface of the oil inlet pipe (401) is provided with an external thread (40101), and the oil inlet pipe (401) is installed with a cover (5) through the external thread (40101); A sealing block (501) is provided on the lower surface of the cover body (5), the outer surface of the sealing block (501) abuts against the inner surface of the oil inlet pipe (401), and a hexagonal wrench slot (502) is provided on the upper surface of the cover body (5), one end of the hexagonal wrench slot (502) extends to the interior of the sealing block (501).

2. A high-pressure pump crankshaft that is easy to lubricate according to claim 1, characterized in that: A sealing plate (6) is mounted on the upper surface of the cover body (5).

3. A high-pressure pump crankshaft that is easy to lubricate according to claim 2, characterized in that: A retaining spring (7) is mounted on the upper surface of the sealing plate (6).

4. A high-pressure pump crankshaft that is easy to lubricate according to claim 1, characterized in that: The outer surface of the crankshaft body (1) is coated with a wear-resistant coating.

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