Double-cylinder fuel injection pump body

Abstract

The utility model relates to the technical field of fuel injection pumps, in particular to a double-cylinder fuel injection pump body which comprises a flange and a boss arranged on the flange, and the boss is provided with a first face, a second face, a third face and a fourth face. The first face, the second face and the third face are all flush with the side edge of the flange, the fourth face is a certain distance away from the side edge of the flange, and threaded holes are formed in the side edge of the first face, the side edge of the second face and the side edge of the third face. According to the utility model, a plurality of oil discharge ports are arranged; the oil unloading efficiency is improved, and residual oil accumulation is avoided; three threaded holes are formed, so that the oil inlet screw mounting position and the oil inlet form can be selected as required; by arranging the reinforcing piece, the overall strength of the installed pump body is enhanced, and the operation stability of the pump body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injection pumps, in particular to a double-cylinder fuel injection pump body. Background Art

[0002] Before use, the existing fuel injection pump body is installed through the assembly holes on the flange. The mounting holes on the flange are generally arranged in an evenly spaced manner, which is relatively strong for flat installation. However, for multi-surface assembly or vertical and inclined assembly, the vertical mounting holes are difficult to meet the requirements of stable assembly.

[0003] Therefore, it is necessary to provide a double-cylinder fuel injection pump body with three-sided installation effect. Utility Model Content

[0004] The utility model provides a double-cylinder fuel injection pump body to solve the above technical problems.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the present utility model provides a dual-cylinder fuel injection pump body, including: a flange and a boss arranged on the flange, the boss having a first surface, a second surface, a third surface and a fourth surface, the first surface, the second surface and the third surface are all flush with the side of the flange, the fourth surface is at a distance from the side of the flange, and threaded holes are provided on the sides of the first surface, the second surface and the third surface.

[0006] Furthermore, the pump body is provided with a plurality of oil unloading ports.

[0007] Furthermore, the pump body is made of aluminum.

[0008] Furthermore, mounting holes are provided at the corner positions adjacent to the flange and the boss.

[0009] Furthermore, a reinforcement piece is integrally provided on the top edge of the mounting hole.

[0010] Furthermore, the reinforcement is a circular protruding structure.

[0011] Furthermore, two groups of guide grooves are provided on the pump body, a guide pin is provided in each group of the guide grooves, and a tappet body is provided on the guide pin.

[0012] Furthermore, an avoidance groove is provided on the bottom edge of the guide groove.

[0013] Furthermore, a sedimentation tank is provided on the reinforcement member, and the sedimentation tank is arranged in a turbine shape with the center of the reinforcement member as the center.

[0014] Furthermore, an elastic strip is provided inside the sedimentation tank, the width of the elastic strip gradually decreases from the upper guide, and the width of the top surface of the elastic strip is greater than the width of the sedimentation tank.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] By setting up multiple oil unloading ports, the oil unloading efficiency is improved and the accumulation of residual oil is avoided;

[0017] By setting threaded holes on three sides, the location of the oil inlet screw and the form of oil inlet can be selected as needed;

[0018] By setting reinforcements, the overall strength of the pump body after installation is enhanced, and the operating stability of the pump body is improved;

[0019] By setting up sedimentation troughs and elastic strips, the airtightness of the installation connection gaps is enhanced, the connection gaps are prevented from rusting, and the difficulty of operation when inspecting and replacing accessories is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a three-dimensional diagram of a preferred embodiment of a dual-cylinder fuel injection pump body of the present utility model;

[0022] Figure 2 This is a schematic structural diagram of the optimal embodiment of the flange of the utility model;

[0023] Figure 3 A cross-sectional view of a preferred embodiment of the avoidance trough of the present invention;

[0024] Figure 4 A cross-sectional view of a preferred embodiment of the guide groove of the present utility model;

[0025] Figure 5 This is a structural diagram of the optimal embodiment of the sedimentation tank of the utility model;

[0026] Figure 6 This is a cross-sectional view of the optimal embodiment of the elastic strip of the utility model.

[0027] Among them, 1. Pump body; 2. Flange; 3. Boss; 31. First side; 32. Second side; 33. Third side; 34. Fourth side; 4. Mounting hole; 41. Reinforcement; 42. Sedimentation trough; 43. Elastic strip; 5. Guide groove; 6. Guide pin; 7. Oil unloading port; 8. Avoidance groove. DETAILED DESCRIPTION

[0028] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0029] See also Figure 1 and combined Figure 2 , Figure 1 This is a three-dimensional diagram of a preferred embodiment of a dual-cylinder fuel injection pump body of the present utility model; Figure 2 This is a schematic structural diagram of the optimal embodiment of the flange of the utility model. Figures 1 to 2 As shown, at least one embodiment provides a dual-cylinder fuel injection pump body, comprising: a flange 2 and a boss 3 provided on the flange 2, and a plurality of oil unloading ports 7 provided on the pump body 1. Compared with the single oil unloading port 7 in the related art, the oil unloading ports 7 arranged at equal intervals on the pump body 1 in this embodiment can improve the oil unloading efficiency and avoid the accumulation of residual oil. The material of the pump body 1 is aluminum. A flange 2 for assembly is provided on the pump body 1, and a boss 3 is integrally formed on the flange 2. In addition, mounting holes 4 are provided at the corner positions adjacent to the flange 2 and the boss 3, that is, countersunk holes are provided at the corner plane positions for assembling and locking the entire pump body 1. Specifically, the inner wall of the mounting hole 4 is provided with a thread.

[0030] Please continue reading Figure 2 In combination with the figure, the boss 3 has a first surface 31, a second surface 32, a third surface 33 and a fourth surface 34. The first surface 31, the second surface 32 and the third surface 33 are all flush with the side of the flange 2, and the fourth surface 34 is at a distance from the side of the flange 2. Threaded holes are provided on the sides of the first surface 31, the second surface 32 and the third surface 33. By setting threaded holes on three sides, the position of the oil inlet screw and the oil inlet form can be selected as needed to improve the applicability of the pump body 1.

[0031] Please continue reading Figure 1 and combined Figure 5 and Figure 6 , Figure 5 This is a structural diagram of the optimal embodiment of the sedimentation tank of the utility model; Figure 6 This is a cross-sectional view of the optimal embodiment of the elastic strip of the utility model. Figure 1 、 Figure 5 and Figure 6As shown, a reinforcement 41 is integrally provided at the top edge of the mounting hole 4. This reinforcement 41 is intended to prevent cracks or deformation in the assembled pump body 1 when subjected to stress at the mounting hole 4. Therefore, the reinforcement 41 is a circular protrusion. The thickened design lengthens the mounting hole 4 overall, making it more resistant to bending. A settling groove 42 is formed on the reinforcement 41. It should be noted that the depth of the settling groove 42 is 1 / 4 the thickness of the protrusion. The settling groove 42 is arranged in a turbine-like shape centered around the center of the reinforcement 41. An elastic strip 43 is embedded within the settling groove 42. This embedded elastic strip 43 enhances friction between the contact surfaces and improves the tightness of the connection. Furthermore, the turbine-like spiraling elastic strip 43 provides a multi-layered sealing effect, preventing impurities from entering the connection gap and causing corrosion and difficulty in disassembly. The width of the elastic strip 43 gradually decreases from the top, becoming wider at the top than the width of the settling groove 42. The further down the pressure is applied, the greater the width of the elastic strip 43.

[0032] Please continue to refer to 1 and combine Figure 3 and Figure 4 , Figure 3 A cross-sectional view of a preferred embodiment of the avoidance trough of the present invention; Figure 4 This is a cross-sectional view of the optimal embodiment of the guide groove of the utility model. Figure 1 、 Figure 3 and Figure 4 As shown, the pump body 1 is provided with two sets of guide grooves 5, each set of guide grooves 5 is provided with a guide pin 6, and a tappet body is provided on the guide pin 6. The bottom edge of the guide groove 5 is provided with an avoidance groove 8, which allows the cam structure to be accommodated in its inner cavity without contacting the pump body.

[0033] In summary, by setting up multiple oil unloading ports 7, the oil unloading efficiency is improved and the accumulation of residual oil is avoided; by setting up three-sided threaded holes, the installation position of the oil inlet screw and the oil inlet form can be selected as needed; by setting up the reinforcement 41, the overall strength of the pump body 1 after installation is enhanced, and the operating stability of the pump body is improved; by setting up the sedimentation tank 42 and the elastic strip 43, the airtightness of the installation connection gap is enhanced, the connection gap is avoided from rusting, and the difficulty of operation when repairing and replacing accessories is reduced.

[0034] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A dual-cylinder fuel injection pump body, characterized in that: include: A flange (2) and a boss (3) arranged on the flange (2), wherein the boss (3) has a first surface (31), a second surface (32), a third surface (33) and a fourth surface (34), wherein the first surface (31), the second surface (32) and the third surface (33) are all flush with the side of the flange (2), and the fourth surface (34) is at a distance from the side of the flange (2), and threaded holes are provided on the sides of the first surface (31), the second surface (32) and the third surface (33).

2. A dual-cylinder fuel injection pump body according to claim 1, characterized in that: The pump body (1) is provided with a plurality of oil unloading ports (7).

3. A dual-cylinder fuel injection pump body according to claim 1, characterized in that: The material of the pump body (1) is aluminum.

4. A dual-cylinder fuel injection pump body according to claim 1, characterized in that: Mounting holes (4) are provided at the corner positions adjacent to the flange (2) and the boss (3).

5. A dual-cylinder fuel injection pump body according to claim 4, characterized in that: A reinforcement piece (41) is integrally provided on the top edge of the mounting hole (4).

6. A dual-cylinder fuel injection pump body according to claim 5, characterized in that: The reinforcement (41) is a circular convex structure.

7. A dual-cylinder fuel injection pump body according to claim 1, characterized in that: Two groups of guide grooves (5) are provided on the pump body (1), a guide pin (6) is provided in each group of the guide grooves (5), and a tappet body is provided on the guide pin (6).

8. A dual-cylinder fuel injection pump body according to claim 7, characterized in that: The bottom edge of the guide groove (5) is provided with an avoidance groove (8).

9. A dual-cylinder fuel injection pump body according to claim 5, characterized in that: The reinforcement member (41) is provided with a sedimentation trough (42), and the sedimentation trough (42) is arranged in a turbine shape with the center of the reinforcement member (41) as the center of the circle.

10. A dual-cylinder fuel injection pump body according to claim 9, characterized in that: An elastic strip (43) is provided inside the sedimentation trough (42), the width of the elastic strip (43) gradually decreases from the upper direction, and the width of the top surface of the elastic strip (43) is greater than the width of the sedimentation trough (42).

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