Gear connecting disc of fuel injection pump

Abstract

The utility model discloses a fuel injection pump gear connecting disc which comprises a main body unit, the main body unit comprises a gear disc, a plurality of first installation holes are formed in the surface of the gear disc, an installation opening is formed in the middle of the gear disc, and a plurality of sets of clamping grooves are formed in the inner wall of the installation opening. The mounting opening of the gear disc is aligned with the circular truncated cone, then the gear disc is pushed to slide into the surface of the circular truncated cone, meanwhile, the abutting block moves towards the inner wall of the mounting opening under the elastic force action of the spring and abuts against the inner wall of the mounting opening till the abutting block is clamped into the clamping groove, meanwhile, the first mounting hole is aligned with the flange hole, and then the fuel injection pump is inserted into the connecting cylinder. By means of the arrangement, disassembly and market maintenance are convenient, the assembly efficiency of an engine assembly line is improved, the assembly is assembled in advance, meanwhile, the gear and the fuel injection pump are assembled more firmly, and whether assembly is firm or not can be checked conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injection pumps, in particular to a gear connecting plate of a fuel injection pump. Background Art

[0002] The fuel injection pump is a key component in the fuel system. Its main function is to spray fuel at high pressure into the combustion chamber of the engine to achieve effective combustion of the fuel and ensure the normal operation of the engine. During the manufacturing process, the fuel injection pump needs to be assembled with the fuel pump gear so that the gear drives the fuel injection pump to work.

[0003] Most fuel injection pumps have cone angles and gear meshing, which require mutual alignment and meshing during engine assembly, resulting in slow assembly, delayed process time, difficulty in disassembly for market maintenance, and increased labor intensity for workers. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems existing in the existing fuel injection pump gear connecting plate, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a fuel injection pump gear connecting plate, which is designed to solve the problem that "most fuel injection pumps have cone angles that mesh with gears, and need to be aligned and meshed with each other during the engine assembly process, which leads to slow assembly, delays in process time, difficulty in disassembly for market maintenance, and increases the labor intensity of workers."

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

[0008] A fuel injection pump gear connecting plate, comprising:

[0009] The main unit comprises a gear plate, and a plurality of mounting holes are provided on the surface of the gear plate, a mounting opening is provided in the middle of the gear plate, and a plurality of slots are provided on the inner wall of the mounting opening;

[0010] The connecting unit includes a truncated cone arranged inside the mounting port, and a receiving hole is opened inside the truncated cone, a connecting flange is fixedly connected to the outer side of the truncated cone, and a plurality of flange holes matching with the mounting hole are opened on the surface of the connecting flange, one end of the truncated cone is fixedly connected to the connecting cylinder, and a sliding hole is opened inside the connecting cylinder, the sliding hole is connected with the receiving hole, a plurality of groups of sliding grooves are opened on the surface of the truncated cone, and a positioning assembly is arranged inside the sliding groove.

[0011] As a preferred solution of the fuel injection pump gear connecting plate described in the utility model, the frustum, connecting flange and connecting cylinder are all modulated, with a hardness of -, and the surfaces of the frustum, connecting flange and connecting cylinder are blued.

[0012] As a preferred solution of the fuel injection pump gear connecting plate described in the utility model, the sliding hole is designed to be conical, the end of the sliding hole close to the truncated cone is the end with a smaller inner diameter, and a positioning groove is opened on the inner wall of the sliding hole.

[0013] As a preferred solution of the fuel injection pump gear connecting plate of the utility model, the sliding hole is inspected by a standard mandrel, and the fitting area should be greater than 85%.

[0014] As a preferred solution of a fuel injection pump gear connecting plate described in the utility model, wherein: multiple groups of the positioning components all include an abutment block slidably connected to the inner wall of the slide groove, and the side close to the abutment block is fixedly connected to a connecting rod, the other end of the multiple groups of connecting rods are fixedly connected to a limiting block, the bottom of the inner wall of the multiple groups of slide grooves are provided with sliding holes, and the sliding holes are slidably connected to the limiting block, the surface of the multiple groups of connecting rods are all provided with a spring, and the two ends of the spring are respectively fixedly connected to the inner surface of the abutment block and the bottom of the inner wall of the slide groove.

[0015] As a preferred solution of the fuel injection pump gear connecting plate described in the utility model, the outer surfaces of multiple groups of the abutment blocks are all designed to be arc-shaped, and the outer surfaces of multiple groups of the abutment blocks are all engaged and connected with the inner wall of the slot.

[0016] Beneficial effects of the utility model:

[0017] Align the mounting opening of the gear plate with the truncated cone, then push the gear plate to slide into the surface of the truncated cone, and at the same time, the abutment block moves toward and abuts against the inner wall of the mounting opening under the elastic force of the spring until the abutment block is engaged in the slot, and at the same time, align the mounting hole with the flange hole, and then insert the injection pump into the connecting cylinder, fit it with the inner wall surface of the sliding hole, and position it through the positioning groove. This arrangement is not only convenient for disassembly and market maintenance, but also improves the assembly efficiency of the engine assembly line and allows the assembly to be assembled in advance. At the same time, the gear and the injection pump are assembled more securely, making it easy to check whether the assembly is secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a fuel injection pump gear connecting plate proposed by the utility model;

[0020] Figure 2 for Figure 1 A schematic cross-sectional view of the three-dimensional structure;

[0021] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure explosion;

[0022] Figure 4 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0023] Figure 5 for Figure 1 Schematic diagram of the three-dimensional structure test.

[0024] In the figure: 100, main unit; 101, gear plate; 102, mounting hole 1; 103, slot; 200, connecting unit; 201, frustum; 202, connecting flange; 203, connecting cylinder; 204, sliding hole; 205, positioning groove; 206, positioning assembly; 206a, abutment block; 206b, connecting rod; 206c, limit block; 206d, spring; 207, slide groove; 208, flange hole; 209, receiving hole. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Reference Figure 1-5 The utility model provides a fuel injection pump gear connecting plate, comprising:

[0030] The main unit 100 includes a gear plate 101, and a plurality of mounting holes 102 are provided on the surface of the gear plate 101. A mounting opening is provided in the middle of the gear plate 101, and a plurality of slots 103 are provided on the inner wall of the mounting opening.

[0031] The connecting unit 200 includes a truncated cone 201 arranged inside the mounting opening, and a receiving hole 209 is opened inside the truncated cone 201, a connecting flange 202 is fixedly connected to the outer side of the truncated cone 201, and a plurality of flange holes 208 matching the mounting hole 102 are opened on the surface of the connecting flange 202, one end of the truncated cone 201 is fixedly connected to the connecting cylinder 203, and a sliding hole 204 is opened inside the connecting cylinder 203, and the sliding hole 204 is communicated with the receiving hole 209, and a plurality of groups of sliding grooves 207 are opened on the surface of the truncated cone 201, and a positioning assembly 206 is arranged inside the sliding groove 207.

[0032] Among them, the truncated table 201, the connecting flange 202 and the connecting cylinder 203 are all subjected to modulation treatment, and the hardness is 26-31HRC, and the surfaces of the truncated table 201, the connecting flange 202 and the connecting cylinder 203 are subjected to blueing treatment and standardized treatment to improve production efficiency.

[0033] Furthermore, the sliding hole 204 is designed to be conical, and the end of the sliding hole 204 close to the truncated cone 201 is the end with a smaller inner diameter. A positioning groove 205 is opened on the inner wall of the sliding hole 204. The positioning groove 205 has a guiding and positioning function to prevent relative rotation with the injection pump during assembly, which affects the assembly efficiency.

[0034] Further, the slide-in hole 204 is inspected with a standard mandrel, and the fit area should be greater than 85%.

[0035] Furthermore, multiple groups of positioning components 206 all include abutment blocks 206a that are slidably connected to the inner wall of the slide groove 207, and the side close to the abutment blocks 206a is fixedly connected with a connecting rod 206b, and the other ends of multiple groups of connecting rods 206b are fixedly connected to the limiting blocks 206c, and the bottom of the inner wall of multiple groups of slide grooves 207 are provided with sliding holes, and the sliding holes are slidably connected to the limiting blocks 206c, and the surfaces of multiple groups of connecting rods 206b are all sleeved with springs 206d, and the two ends of the spring 206d are respectively fixedly connected to the inner side surface of the abutment blocks 206a and the bottom of the inner wall of the slide groove 207. Under the elastic force of the spring 206d, the abutment blocks 206a move outward from the inside of the slide groove 207 and abut against the inner wall of the installation port, thereby pre-positioning the gear plate 101 and the connecting flange 202 for easy manual installation.

[0036] Furthermore, the outer surfaces of the multiple sets of abutment blocks 206a are all arc-shaped, and the outer surfaces of the multiple sets of abutment blocks 206a are all engaged with the inner wall of the slot 103. The gear plate 101 can be manually slid from the surface of the connecting flange 202 to facilitate the abutment blocks 206a to exit the engaged connection with the slot 103.

[0037] During use, the mounting opening of the gear plate 101 is aligned with the truncated cone 201, and then the gear plate 101 is pushed to slide into the surface of the truncated cone 201. At the same time, the abutment block 206a moves toward and abuts against the inner wall of the mounting opening under the elastic force of the spring 206d, until the abutment block 206a is engaged into the slot 103, so that the gear plate 101 and the truncated cone 201 are pre-positioned, and the mounting hole 102 is aligned with the flange hole 208 for easy manual installation. Then the fuel injection pump is inserted into the connecting cylinder 203, fits with the inner wall surface of the sliding hole 204, and the fuel injection pump is positioned through the positioning groove 205 to improve installation efficiency and facilitate disassembly.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A fuel injection pump gear connecting plate, characterized in that: include: The main unit (100) comprises a gear plate (101), and a plurality of mounting holes (102) are provided on the surface of the gear plate (101); a mounting opening is provided in the middle of the gear plate (101), and a plurality of slots (103) are provided on the inner wall of the mounting opening; The connection unit (200) comprises a truncated table (201) arranged inside the mounting opening, and a receiving hole (209) is provided inside the truncated table (201); a connecting flange (202) is fixedly connected to the outer side of the truncated table (201), and a plurality of flange holes (208) matching with the mounting hole 1 (102) are provided on the surface of the connecting flange (202); one end of the truncated table (201) is fixedly connected to the connecting cylinder (203), and a sliding hole (204) is provided inside the connecting cylinder (203); the sliding hole (204) and the receiving hole (209) are communicated with each other; a plurality of groups of slide grooves (207) are provided on the surface of the truncated table (201), and a positioning assembly (206) is provided inside the slide grooves (207).

2. The fuel injection pump gear connecting plate according to claim 1, characterized in that: The truncated platform (201), the connecting flange (202) and the connecting cylinder (203) are all subjected to a modulation treatment, and the hardness is 26-31HRC, and the surfaces of the truncated platform (201), the connecting flange (202) and the connecting cylinder (203) are subjected to a blueing treatment.

3. The fuel injection pump gear connecting plate according to claim 2, characterized in that: The sliding hole (204) is designed to be conical, and the end of the sliding hole (204) close to the truncated cone (201) is the end with a smaller inner diameter. A positioning groove (205) is provided on the inner wall of the sliding hole (204).

4. The fuel injection pump gear connecting plate according to claim 3, characterized in that: The slide-in hole (204) is tested with a standard mandrel and the contact area should be greater than 85%.

5. The fuel injection pump gear connecting plate according to claim 4, characterized in that: The plurality of groups of positioning components (206) all include an abutment block (206a) slidably connected to the inner wall of the slide groove (207), and the side of the abutment block (206a) close to the abutment block (206a) is fixedly connected to a connecting rod (206b), and the other end of the plurality of groups of connecting rods (206b) is fixedly connected to a limiting block (206c), and the bottom of the inner wall of the plurality of groups of slide grooves (207) is provided with a sliding hole, and the sliding hole is slidably connected to the limiting block (206c), and the surface of the plurality of groups of connecting rods (206b) is sleeved with a spring (206d), and the two ends of the spring (206d) are respectively fixedly connected to the inner surface of the abutment block (206a) and the bottom of the inner wall of the slide groove (207).

6. The fuel injection pump gear connecting plate according to claim 5, characterized in that: The outer surfaces of the plurality of groups of the abutting blocks (206a) are all designed to be arc-shaped, and the outer surfaces of the plurality of groups of the abutting blocks (206a) are all engaged and connected with the inner wall of the slot (103).

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