High-pressure common rail pump mounting structure

Abstract

A high-pressure common rail pump installation structure comprises a high-pressure common rail pump, a front installation support and a rear installation support are arranged on the two sides of the high-pressure common rail pump respectively, positioning bosses protruding outwards are machined on the front installation support and the rear installation support, the positioning bosses are clamped into the high-pressure common rail pump, shaft holes are machined in the middles of the positioning bosses, and the positioning bosses are clamped into the high-pressure common rail pump. The two ends of a cam shaft in the high-pressure common rail pump are connected with the bearing bushes in the front installation support and the rear installation support respectively, connecting holes are machined in the peripheries of the front installation support and the rear installation support, and the connecting holes are connected with the high-pressure common rail pump through screws. Connecting bases protruding outwards are machined on the side faces of the front mounting support and the rear mounting support, and mounting holes are machined in the connecting bases. The front mounting bracket and the rear mounting bracket are arranged on the two sides of the high-pressure common rail pump, so that the high-pressure common rail pump can be mounted on the 135 diesel engine, and the problem of mounting the high-pressure common rail pump and the existing diesel engine is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure common rail pumps, in particular to a high-pressure common rail pump installation structure. Background Art

[0002] As the country's emission standards for diesel vehicles are improved, high-pressure common rail pumps are gradually used in diesel engines. The fuel injection pressure of the high-pressure common rail pump is large. Compared with the traditional fuel injection pump, the high-pressure fuel generated by the high-pressure common rail pump is collected in the high-pressure rail, and the fuel injection is distributed by the high-pressure rail. This reduces the number of plungers on the pump and eliminates the original pull rod for adjusting the plunger angle, making the pump structure more compact. For example, the original fuel injection pump of the 135 diesel engine adopts a 12-cylinder design, and the existing high-pressure common rail pump adopts a 6-cylinder design. Due to the reduction in the number of cylinders, the overall size of the high-pressure common rail pump is reduced. In order to enable the high-pressure common rail pump to be installed on the 135 diesel engine, the installation structure of the high-pressure common rail pump needs to be improved. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a high-pressure common rail pump installation structure in view of the deficiencies of the above-mentioned prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A high-pressure common rail pump mounting structure comprises a high-pressure common rail pump, a front mounting bracket and a rear mounting bracket are respectively arranged on both sides of the high-pressure common rail pump, the front mounting bracket and the rear mounting bracket are processed with positioning bosses protruding outward, the positioning bosses are inserted into the high-pressure common rail pump, an axial hole is processed in the middle of the positioning boss, a bearing bush is installed in the axial hole, two ends of a camshaft in the high-pressure common rail pump are respectively connected to the bearing bushes in the front mounting bracket and the rear mounting bracket, connecting holes are processed around the front mounting bracket and the rear mounting bracket, the connecting holes are connected to the high-pressure common rail pump by screws, and the sides of the front mounting bracket and the rear mounting bracket are processed with connecting seats protruding outward, and the connecting seats are processed with mounting holes.

[0006] Furthermore, a threaded mounting hole is processed on one side of the rear mounting bracket, and an oil pump is installed at the threaded mounting hole through connecting screws.

[0007] Furthermore, the bearing shell and the positioning boss are provided with through oil holes.

[0008] Furthermore, a mounting groove is processed on the positioning boss, and a sealing ring is connected to the mounting groove.

[0009] Compared with the prior art, the utility model provides a high-pressure common rail pump installation structure, which enables the high-pressure common rail pump to be installed on a 135 diesel engine by arranging front and rear installation brackets on both sides of the high-pressure common rail pump, thereby solving the installation problem of the high-pressure common rail pump and the existing diesel engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 It is a structural schematic diagram of the front mounting bracket and the bearing bushing installation of the utility model;

[0012] Figure 3 It is a structural schematic diagram of the rear mounting bracket and the bearing bushing installation of the utility model;

[0013] Figure 4 It is a structural schematic diagram of the front mounting bracket of the utility model;

[0014] Figure 5 yes Figure 4 Sectional view at AA in the middle;

[0015] Figure 6 It is a top view of the front mounting bracket of the utility model;

[0016] Figure 7 yes Figure 6 Sectional view at the middle BB;

[0017] Figure 8 It is a structural schematic diagram of the rear mounting bracket of the utility model;

[0018] Fig. 9 yes Figure 8 Sectional view at CC;

[0019] Fig.10 It is a top view of the rear mounting bracket of the utility model;

[0020] Fig.11 yes Fig.10 Sectional view at DD in the middle;

[0021] Among them, 1. high-pressure common rail pump, 2. front mounting bracket, 3. rear mounting bracket, 4. oil pump, 5. positioning boss, 6. bearing, 7. oil hole, 8. sealing ring, 9. connecting hole, 10. connecting seat, 11. mounting hole, 12. reference surface, 13. threaded mounting hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present utility model will be described clearly and completely below.

[0023] like Figures 1 to 11As shown, a high-pressure common rail pump mounting structure comprises a high-pressure common rail pump 1, a front mounting bracket 2 and a rear mounting bracket 3 are respectively arranged on both sides of the high-pressure common rail pump 1, an oil delivery pump 4 is connected to one side of the rear mounting bracket 3, the oil delivery pump 4 delivers engine oil, the front mounting bracket 1 and the rear mounting bracket 2 are machined with outwardly protruding cylindrical positioning bosses 5, the positioning bosses 5 are inserted into the camshaft mounting hole of the high-pressure common rail pump 1, an axial hole is machined in the middle of the positioning boss 5, a bearing bush 6 is installed in the axial hole, both ends of the camshaft in the high-pressure common rail pump 1 are respectively connected to the bearing bush 6 in the front mounting bracket 2 and the rear mounting bracket 3, and a through oil hole 7 is opened on the bearing bush 6 and the positioning boss 5, so that when the high-pressure common rail pump 1 is working, the engine oil can circulate through the oil hole 7 to lubricate the bearing bush 6.

[0024] The positioning boss 5 is processed with a mounting groove, and a sealing ring 8 is connected to the mounting groove to prevent the oil in the cam cavity from leaking.

[0025] The front mounting bracket 1 and the rear mounting bracket 2 are processed with connecting holes 9 around their peripheries, and the connecting holes 9 are connected to the high-pressure common rail pump 1 through screws.

[0026] The sides of the front mounting bracket 1 and the rear mounting bracket 2 are both processed with a connecting seat 10 protruding outward, and the connecting seat 10 is processed with a mounting hole 11, and the mounting hole 11 fixes the front mounting bracket 1 and the rear mounting bracket 2 on the diesel engine.

[0027] In this embodiment, a φ5mm oil hole is processed on the front mounting bracket 2 and the rear mounting bracket 3, and a φ4mm oil hole is processed on the bearing bush 6. Due to space limitations, the positioning boss 5 of the rear mounting bracket 3 is shorter than the positioning boss 5 on the front mounting bracket 2. Therefore, the φ5mm oil hole on the rear mounting bracket 3 is obliquely arranged to communicate with the φ4mm oil hole on the bearing bush 6. The front mounting bracket 1 is processed with a φ8.5mm-φ10mm stepped connecting hole 9, and the rear mounting bracket 2 is processed with a through φ8.5mm connecting hole 9. The front mounting bracket 1 is screwed into the connecting hole 9. The mounting bracket 1 and the rear mounting bracket 2 are respectively connected to the high-pressure common rail pump 1, and the front mounting bracket 1 and the rear mounting bracket 2 are processed with a mounting hole 11 of φ10.5 mm. During the processing, the mounting hole 11 is processed with the bottom end surface of the positioning boss 5 as the reference surface 12, so as to ensure the distance between the mounting hole 11 of the front mounting bracket 1 and the mounting hole 11 of the rear mounting bracket 2 during installation. An M6 threaded mounting hole 13 is processed on one side of the rear mounting bracket 3, and the oil pump 4 is installed at the threaded mounting hole 13 by connecting screws, and the oil pump delivers engine oil to the high-pressure common rail pump 1.

[0028] The present invention is not limited to the described embodiments. Those skilled in the art may make some modifications or changes without departing from the spirit and scope of the present invention, that is, within the scope of disclosure. Therefore, the scope of protection of the present invention shall be subject to the scope defined in the claims.

Claims

1. A high-pressure common rail pump installation structure, comprising a high-pressure common rail pump, characterized in that: A front mounting bracket and a rear mounting bracket are respectively provided on both sides of the high-pressure common rail pump, and the front mounting bracket and the rear mounting bracket are processed with positioning bosses protruding outward, and the positioning bosses are inserted into the high-pressure common rail pump, and an axial hole is processed in the middle of the positioning boss, and a bearing shell is installed in the axial hole, and both ends of the camshaft in the high-pressure common rail pump are respectively connected to the bearing shells in the front mounting bracket and the rear mounting bracket, and connecting holes are processed around the front mounting bracket and the rear mounting bracket, and the connecting holes are connected to the high-pressure common rail pump through screws, and the sides of the front mounting bracket and the rear mounting bracket are processed with connecting seats protruding outward, and mounting holes are processed in the connecting seats.

2. A high pressure common rail pump installation structure according to claim 1, characterized in that: A threaded mounting hole is processed on one side of the rear mounting bracket, and an oil delivery pump is mounted on the threaded mounting hole through connecting screws.

3. A high pressure common rail pump installation structure according to claim 1, characterized in that: The bearing bush and the positioning boss are provided with through oil holes.

4. A high-pressure common rail pump installation structure according to claim 1, characterized in that: The positioning boss is processed with a mounting groove, and a sealing ring is connected to the mounting groove.

Images