Supporting mechanism for fuel injection pump

Abstract

The utility model relates to a fuel injection pump supporting mechanism which comprises an inclined supporting arm, a mounting plate is fixedly connected to the front end face of the supporting arm, a plurality of mounting holes are formed in the mounting plate, a fuel injection pump bracket is arranged on the rear side of the supporting arm and comprises a horizontal upper supporting plate, and a side-standing L-shaped connecting plate is formed on the lower end face of the upper supporting plate. An arc-shaped guide groove is formed in the front end face of the connecting plate. A longitudinal bolt is connected to the upper end of the supporting arm in an inserted mode, the bolt penetrates through the guide groove of the connecting plate to be sleeved with a clamping disc in an inserted mode, an arc-shaped guide block is formed on the front end face of the clamping disc, the guide block is arranged in the guide groove of the connecting plate in an inserted mode, a regular hexagonal limiting counter bore is formed in the rear end face of the clamping disc, and a nut is arranged in the limiting counter bore in an inserted mode. The nut is screwed on the bolt; and the connecting plate is clamped and fixed between the clamping disc and the supporting arm. The supporting mechanism is simple and compact in structure, can be matched with rotary installation of the fuel injection pump, and meanwhile effectively supports the rear end of the fuel injection pump.

Description

Technical field:

[0001] The utility model relates to the technical field of axial flow fans, and more specifically to a fuel injection pump supporting mechanism. Background technology:

[0002] The fuel injection pump is one of the main parts of the diesel engine and is regarded as the "heart" of the diesel engine. Its function is to spray diesel into the cylinder in a timely, quantitative, constant pressure and agile manner according to the different working conditions of the diesel engine. The diesel is sprayed into the cylinder in a timely and quantitative manner according to the engine working conditions to mix with the air for combustion. The reliability of the fuel injection pump is directly related to whether the diesel engine works normally. Due to the structural characteristics of the fuel injection pump, when it is installed on the diesel engine, its rear end is suspended. When the diesel engine is running at high speed, the suspended part of the fuel injection pump will shake and vibrate. The shaking will cause damage to the fuel injection pump itself, the gear chamber, the gear system of the fuel injection pump, etc. In order to solve the problems of fuel injection pump jitter and vibration, it is necessary to design a fuel injection pump support component to solve the problem of the rear end of the fuel injection pump being suspended in the air. It is then proposed to use a support bracket that can be installed on the engine to support the bottom of the rear end of the fuel injection pump. At the same time, because some fuel injection pumps are installed on the engine in a rotating installation manner (due to interference from components on the engine, the fuel injection pump cannot be installed directly), in order to avoid torsional stress caused by rigid connection, the designed support component needs to have an adjustable fastening connection structure. Utility model content:

[0003] The purpose of the utility model is to address the deficiencies of the prior art and to provide a fuel injection pump support mechanism, which has a simple and compact structure and is composed of a support arm, a fuel injection pump bracket and other components. It can cooperate with the rotational installation of the fuel injection pump and effectively support the rear end of the fuel injection pump.

[0004] A fuel injection pump support mechanism comprises an inclined support arm, a longitudinally erected mounting plate is fixedly connected to the front end surface of the lower part of the support arm, a plurality of transverse mounting holes are formed on the front part of the mounting plate, a fuel injection pump bracket is arranged on the rear side of the upper part of the support arm, the fuel injection pump bracket comprises a horizontal upper support plate, a side-standing L-shaped connecting plate is formed on the lower end surface of the upper support plate, and a circular arc-shaped guide groove is formed on the front end surface of the connecting plate;

[0005] A longitudinal bolt is inserted into the upper end of the support arm, and the bolt passes through the guide groove of the connecting plate and is inserted with a clamping disk. An arc-shaped guide block is formed on the front end surface of the clamping disk, and the guide block is inserted in the guide groove of the connecting plate. A regular hexagonal limiting countersunk hole is formed on the rear end surface of the clamping disk, and a nut is inserted in the limiting countersunk hole, and the nut is threaded on the bolt; the connecting plate is clamped and fixed between the clamping disk and the support arm.

[0006] Preferably, the arc center of the guide block on the clamping disk coincides with the arc center of the guide groove on the connecting plate, and the upper and lower arcuate side walls of the guide block respectively abut against the upper and lower arcuate side walls of the guide groove.

[0007] Preferably, a plurality of positioning holes distributed in an array are formed on the upper support plate of the fuel injection pump bracket.

[0008] Preferably, a plurality of vertical internal threaded positioning sleeves respectively connected to the positioning holes are fixedly connected to the lower end surface of the upper support plate, and positioning top screws are threadedly connected to the internal threaded positioning sleeves, and the upper ends of the positioning top screws are inserted into the positioning holes.

[0009] Preferably, the diameter of the positioning screw is not greater than the diameter of the positioning hole on the upper support plate.

[0010] Preferably, a vertical threaded hole is formed on the outer wall of the bottom of the clamping disk, a locking screw is threaded into the threaded hole, and the end of the locking screw is pressed against the bolt.

[0011] Preferably, the diameter of the threaded section of the bolt is smaller than the groove width of the guide groove on the fuel injection pump bracket, and the threaded section of the bolt is inserted into the guide block of the clamping plate.

[0012] The beneficial effects of the utility model are:

[0013] The support mechanism has a simple and compact structure, and is composed of a support arm, a fuel injection pump bracket and other components. It can cooperate with the rotation installation of the fuel injection pump and effectively support the rear end of the fuel injection pump. Description of the drawings:

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model from the side;

[0016] Figure 3 for Figure 2 Schematic cross-sectional view at AA in the middle;

[0017] Figure 4 It is a structural schematic diagram of the utility model in a front view;

[0018] Figure 5 for Figure 4 Schematic cross-sectional view at the middle BB.

[0019] In the figure: 1. Support arm; 2. Fuel injection pump bracket; 21. Upper support plate; 211. Positioning hole; 22. Connecting plate; 221. Guide groove; 3. Mounting plate; 31. Mounting hole; 4. Clamping plate; 41. Guide block; 42. Limit countersunk hole; 5. Bolt; 6. Nut; 7. Internal thread positioning sleeve; 8. Positioning screw; 9. Locking screw. Specific implementation method:

[0020] Example: See Figures 1 to 5 As shown, a fuel injection pump support mechanism comprises an inclined support arm 1, a longitudinally erected mounting plate 3 is fixedly connected to the front end surface of the lower part of the support arm 1, a plurality of transverse mounting holes 31 are formed on the front part of the mounting plate 3, a fuel injection pump bracket 2 is arranged on the rear side of the upper part of the support arm 1, the fuel injection pump bracket 2 comprises a horizontal upper support plate 21, a side-standing and L-shaped connecting plate 22 is formed on the lower end surface of the upper support plate 21, and a circular arc-shaped guide groove 221 is formed on the front end surface of the connecting plate 22;

[0021] A longitudinal bolt 5 is inserted into the upper end of the support arm 1. The bolt 5 is an external hexagonal bolt with a baffle on the head. The bolt 5 passes through the guide groove 221 of the connecting plate 22 and is inserted with a clamping plate 4. A circular arc-shaped guide block 41 is formed on the front end surface of the clamping plate 4. The guide block 41 is inserted in the guide groove 221 of the connecting plate 22. A regular hexagonal limiting countersunk hole 42 is formed on the rear end surface of the clamping plate 4. A nut 6 is inserted in the limiting countersunk hole 42. The nut 6 is an external hexagonal nut, which is pressed against the bottom surface of the limiting countersunk hole 42; the nut 6 is screwed on the bolt 5; the connecting plate 22 is clamped and fixed between the clamping plate 4 and the support arm 1.

[0022] The center of the arc of the guide block 41 on the clamping disk 4 coincides with the center of the arc of the guide groove 221 on the connecting plate 22, and the upper and lower arc-shaped side walls of the guide block 41 respectively abut against the upper and lower arc-shaped side walls of the guide groove 221. Due to the existence of the guide block 41, the clamping disk 4 is constrained by the guide groove 221 and cannot rotate radially.

[0023] The upper support plate 21 of the fuel injection pump bracket 2 is formed with a plurality of positioning holes 211 distributed in an array. Due to the different models of fuel injection pumps, their shapes and structures are different. The bottom of some fuel injection pumps is not a horizontal plane, but an inclined plane, and a plurality of fulcrums are provided at the bottom. The fulcrums can be inserted into the positioning holes 211 to be constrained, and then the upper support plate 21 supports the bottom of the fuel injection pump. Based on the fact that the fulcrum at the bottom of the fuel injection pump is restricted by the upper support plate 21, the supporting effect is better.

[0024] A plurality of vertical internal threaded positioning sleeves 7 are fixedly connected to the lower end surface of the upper support plate 21 and are respectively connected to the positioning holes 211. Positioning top screws 8 are screwed inside the internal threaded positioning sleeves 7, and the upper ends of the positioning top screws 8 are inserted into the positioning holes 211. As mentioned above, the bottom of some fuel injection pumps is not a plane, but a structural surface with some concave and convex structures, and the convex surface is provided with a fulcrum, and the fulcrum can be inserted into the positioning hole 211. The positioning top screws 8 in the positioning holes 211 without the fulcrum can be adjusted upward to rest against the outer surface of the bottom of the fuel injection pump, that is, the positioning top screws 8 are used to achieve multi-point support. Compared with plane support, the fuel injection pump has more supporting points and a better supporting effect.

[0025] The diameter of the positioning screw 8 is not greater than the diameter of the positioning hole 211 on the upper supporting plate 21 .

[0026] A vertical threaded hole is formed on the outer wall of the bottom of the clamping plate 4, and a locking screw 9 is screwed into the threaded hole. The end of the locking screw 9 presses against the bolt 5. The fuel injection pump support mechanism is installed on the engine, and vibration is inevitable. Vibration may cause the bolt 5 to loosen. If the bolt 5 is loose, the support of the fuel injection pump support mechanism will fail. Therefore, a locking screw 9 is added to further limit the rotation of the bolt 5 to reduce the occurrence of bolt 5 loosening.

[0027] The diameter of the threaded section of the bolt 5 is smaller than the groove width of the guide groove 221 on the fuel injection pump bracket 2, and the threaded section of the bolt 5 is inserted on the guide block 41 of the clamping plate 4; because the bolt 5 needs to move in the guide groove 221, the guide block 41 can protect the thread of the bolt 5 and prevent the thread of the bolt 5 from contacting the side wall of the guide groove 221 and causing wear.

[0028] Working principle: The utility model is a fuel injection pump support mechanism, which is composed of a support arm 1, a fuel injection pump bracket 2, a clamping plate 4 and bolts 5. The support arm 1 is fixed to the engine through a mounting plate 3 and a bolt assembly, and the position of the support arm 1 is fixed; and the arc-shaped guide groove 221 on the fuel injection pump bracket 2 can be rotated and adjusted together with the rotating installation of the fuel injection pump; finally, the bolts 5 are tightened to achieve the fixed connection between the support arm 1 and the fuel injection pump bracket 2, thereby supporting the rear end of the fuel injection pump to prevent the rear end from being suspended in the air;

[0029] The clamping plate 4 on the supporting mechanism of the present structure can limit the nut 6 radially. Tightening and loosening can be done by simply rotating the bolt 5. There is no need to use a wrench to limit the nut 6, making installation more convenient and quick.

[0030] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A fuel injection pump support mechanism, comprising an inclined support arm (1), a longitudinally erected mounting plate (3) fixedly connected to the front end surface of the lower part of the support arm (1), a plurality of transverse mounting holes (31) formed on the front part of the mounting plate (3), a fuel injection pump bracket (2) provided on the rear side of the upper part of the support arm (1), characterized in that: The fuel injection pump bracket (2) comprises a horizontal upper support plate (21), a sideways L-shaped connecting plate (22) is formed on the lower end surface of the upper support plate (21), and a circular arc-shaped guide groove (221) is formed on the front end surface of the connecting plate (22); A longitudinal bolt (5) is inserted into the upper end of the support arm (1), and the bolt (5) passes through the guide groove (221) of the connecting plate (22) and is inserted into a clamping plate (4). A circular arc-shaped guide block (41) is formed on the front end surface of the clamping plate (4), and the guide block (41) is inserted into the guide groove (221) of the connecting plate (22). A regular hexagonal limiting countersunk hole (42) is formed on the rear end surface of the clamping plate (4), and a nut (6) is inserted into the limiting countersunk hole (42), and the nut (6) is screwed onto the bolt (5); the connecting plate (22) is clamped and fixed between the clamping plate (4) and the support arm (1).

2. A fuel injection pump support mechanism according to claim 1, characterized in that: The arc center of the guide block (41) on the clamping plate (4) coincides with the arc center of the guide groove (221) on the connecting plate (22), and the upper and lower arc-shaped side walls of the guide block (41) respectively abut against the upper and lower arc-shaped side walls of the guide groove (221).

3. The fuel injection pump support mechanism according to claim 1, characterized in that: A plurality of positioning holes (211) distributed in an array are formed on the upper support plate (21) of the fuel injection pump bracket (2).

4. A fuel injection pump support mechanism according to claim 3, characterized in that: A plurality of vertical internal threaded positioning sleeves (7) respectively connected to the positioning holes (211) are fixedly connected to the lower end surface of the upper support plate (21), and positioning top screws (8) are screwed into the internal threaded positioning sleeves (7), and the upper ends of the positioning top screws (8) are inserted into the positioning holes (211).

5. A fuel injection pump support mechanism according to claim 4, characterized in that: The diameter of the positioning screw (8) is not greater than the diameter of the positioning hole (211) on the upper support plate (21).

6. The fuel injection pump support mechanism according to claim 1, characterized in that: A vertical threaded hole is formed on the outer wall of the bottom of the clamping plate (4), a locking screw (9) is screwed into the threaded hole, and the end of the locking screw (9) is pressed against the bolt (5).

7. A fuel injection pump support mechanism according to claim 6, characterized in that: The diameter of the threaded section of the bolt (5) is smaller than the width of the guide groove (221) on the fuel injection pump bracket (2), and the threaded section of the bolt (5) is inserted into the guide block (41) of the clamping plate (4).

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