Device for assembling mixing ratio assembly of fuel injector of aviation piston engine

Abstract

The utility model discloses a device for assembling a fuel injector mixing ratio assembly of an aviation piston engine, and relates to the technical field of fuel injector mixing ratio assembly assembling, the device comprises a fixed base and a push rod, the left side of the fixed base is provided with a fixed check block, and the fixed check block is provided with a through hole; an abutting groove is formed in the left side of the fixed stop block; a pushing rocker arm assembly is installed on the upper surface of the fixing base through a second limiting bolt, a limiting assembly and a pushing rod are installed on the pushing rocker arm assembly, a lengthened fixing rod is installed on the pushing rod, and a fuel injector mixing ratio assembly body is installed between a fixing check block and the lengthened fixing rod. The device for assembling the fuel injector mixing ratio assembly of the aviation piston engine is provided with the lengthened fixing rod, the lengthened fixing rod can be conveniently disassembled and assembled through the threaded rod, the total length of the lengthened fixing rod and the pushing rod can be conveniently adjusted, and therefore the device is suitable for assembling different types of fuel injector mixing ratio assemblies.

Description

Technical Field

[0001] This utility model relates to the field of fuel injector mixture ratio assembly technology, specifically a device for assembling a fuel injector mixture ratio assembly for an aircraft piston engine. Background Technology

[0002] The assembly of the fuel injector mixture ratio component has always been a challenge in fuel injector assembly. How to assemble the mixture ratio component safely and efficiently is the key to determining the assembly time and quality assurance of the fuel injector.

[0003] When assembling the fuel injector mixture assembly, all components of the mixture assembly (except the retaining ring) are pre-installed together, then placed in a vise along with the spacer block. The mixture spring is compressed by squeezing the vise, causing the retaining ring groove of the mixture rod to pass through the spring seat behind the spring. Finally, the retaining ring is inserted into the retaining ring groove to complete the installation. However, there are still some defects in the assembly process.

[0004] 1. The contact between the mixing ratio component and the vise is unstable. It is easy to slip out during the compression of the mixing ratio spring. At this time, the spring compression is very large. After slipping out, the spring seat in front of the spring will pop out directly, which can easily cause a safety accident.

[0005] 2. During the installation of the mixing ratio component, when the mixing ratio rod passes through the spring seat, it is easy for it to get stuck at the contact surface of the spring seat in the snap ring groove, causing deformation of the spring seat.

[0006] Therefore, we propose an assembly device for the fuel injector mixture ratio component of an aircraft piston engine to solve the problems mentioned above. Utility Model Content

[0007] The purpose of this invention is to provide a device for assembling the fuel injector mixture ratio assembly for an aircraft piston engine, so as to solve the problem of the defects in the assembly of fuel injector mixture ratio assemblies currently on the market as mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a device for assembling a fuel injector mixture ratio component for an aviation piston engine, comprising a fixed base and a push rod, wherein a fixed stop is installed on the left side of the fixed base, and a through hole is provided on the fixed stop, and an abutment groove is provided on the left side of the fixed stop;

[0009] The upper surface of the fixed base is fitted with a push rocker arm assembly via a second limiting bolt. The push rocker arm assembly is fitted with a limiting component and a push rod. An extension fixing rod is fitted on the push rod. The fuel injector mixture ratio assembly body is fitted between the fixed block and the extension fixing rod.

[0010] Preferably, the upper surface of the fixed base is provided with a limiting groove, and the fixed block is located on the upper surface of the limiting groove.

[0011] With the above structural design, when installing the fixed block, the fixed block is placed on the limiting groove on the fixed base, which facilitates the positioning of the fixed block.

[0012] Preferably, the fixed stop has a threaded groove, and the fixed stop is connected to the fixed base by a first limiting bolt, the upper end of the first limiting bolt being located in the threaded groove.

[0013] With the above structural design, after the fixed block is positioned, the fixed block is then fixed on the fixed base by rotating the first limit bolt.

[0014] Preferably, the push rocker arm assembly is located to the right of the fixed stop, and the distance between the push rocker arm assembly and the fixed stop is greater than the total length of the fuel injector mixture ratio assembly body.

[0015] The above structural design facilitates the placement of the fuel injector mixture ratio assembly body between the push rocker arm assembly and the fixed stop, and the fuel injector mixture ratio assembly body is assembled by pressing the push rocker arm assembly.

[0016] Preferably, the push rod passes through the limiting component, and the push rod and the limiting component form a sliding connection structure.

[0017] With the above structural design, the rocker arm assembly drives the push rod to move to the left, and the limiting assembly plays a guiding role in limiting the push rod, so that the push rod will not deviate when moving.

[0018] Preferably, a threaded rod is installed on the extended fixing rod, and the extended fixing rod is connected to the push rod through the threaded rod.

[0019] The above structural design allows for easy assembly and disassembly of the extended fixing rod and adjustment of the total length of the extended fixing rod and push rod via the threaded rod, making it suitable for assembling different types of fuel injector mixture ratio components.

[0020] Preferably, the fuel injector mixture ratio assembly body includes a mixture ratio assembly body, a mixture ratio assembly slot, a spring assembly, a spring seat, and a retaining ring. The mixture ratio assembly body has a mixture ratio assembly slot, the spring assembly is sleeved on the mixture ratio assembly body, and a spring seat is provided on the left side of the spring assembly. A retaining ring can be engaged with the mixture ratio assembly slot.

[0021] Using the above structural design, when assembling the fuel injector mixture ratio assembly body, the spring seat is placed in the through hole on the fixed stop block, so that the spring seat abuts against the abutment groove. Then, the various components of the fuel injector mixture ratio assembly body are pre-installed together. Except for the retaining ring, the fuel injector mixture ratio assembly body is fixed to the assembly device. By swinging and pushing the rocker arm assembly to compress the spring assembly, until the mixture ratio assembly slot appears on the other side of the spring seat, the retaining ring is put into the mixture ratio assembly slot, and the assembly of the fuel injector mixture ratio assembly body is completed.

[0022] Compared with the prior art, the beneficial effects of this utility model are: the device for assembling the fuel injector mixture ratio component of an aircraft piston engine:

[0023] 1. It is equipped with a rocker arm assembly, which is used to assemble the fuel injector mixture ratio component body, avoiding the defects of traditional installation methods and improving safety and speed.

[0024] 2. An extended fixing rod is provided, which can be easily disassembled and installed via a threaded rod, and the total length of the extended fixing rod and the push rod can be adjusted, thus making it suitable for the assembly of different types of fuel injector mixture ratio components. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0026] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0027] Figure 3 This is a schematic diagram of the overall structure of the fixing block of this utility model from the front view.

[0028] Figure 4 This is a schematic diagram of the overall structure of the fixing block of this utility model from the right side.

[0029] Figure 5 This is a schematic diagram of the abutment groove position structure of this utility model;

[0030] Figure 6 This is a schematic diagram of the connection structure between the push rod and the extended fixing rod of this utility model;

[0031] Figure 7 This is a schematic diagram of the main structure of the fuel injector mixture ratio component of this utility model.

[0032] In the diagram: 1. Fixed base; 2. Fixed stop; 3. Through hole; 4. Abutment groove; 5. Limiting groove; 6. First limiting bolt; 7. Second limiting bolt; 8. Push rocker arm assembly; 9. Limiting assembly; 10. Push rod; 11. Extended fixing rod; 12. Threaded rod; 13. Fuel injector mixture ratio assembly body; 1301. Mixture ratio assembly body; 1302. Mixture ratio assembly slot; 1303. Spring assembly; 1304. Spring seat; 1305. Snap ring. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1-7 This utility model provides a technical solution: a device for assembling a fuel injector mixture ratio assembly for an aircraft piston engine, comprising a fixed base 1, a fixed stop 2, a through hole 3, an abutment groove 4, a limiting groove 5, a first limiting bolt 6, a second limiting bolt 7, a push rocker arm assembly 8, a limiting assembly 9, a push rod 10, an extended fixing rod 11, a threaded rod 12, a fuel injector mixture ratio assembly body 13, a mixture ratio assembly main body 1301, a mixture ratio assembly slot 1302, a spring assembly 1303, a spring seat 1304, and a retaining ring 1305. A fixed stop 2 is installed on the left side of the fixed base 1, and the fixed stop... The block 2 has a through hole 3 and an abutment groove 4 on the left side. The upper surface of the fixed base 1 has a limit groove 5. The fixed block 2 is located on the upper surface of the limit groove 5. When installing the fixed block 2, the fixed block 2 is placed on the limit groove 5 on the fixed base 1 to facilitate the positioning of the fixed block 2. The fixed block 2 has a threaded groove. The fixed block 2 and the fixed base 1 are connected by a first limit bolt 6. The upper end of the first limit bolt 6 is located in the threaded groove. After the fixed block 2 is positioned, the fixed block 2 is fixed on the fixed base 1 by rotating the first limit bolt 6.

[0035] A push rocker arm assembly 8 is mounted on the upper surface of the fixed base 1 via a second limiting bolt 7. The push rocker arm assembly 8 is located to the right of the fixed stop 2, and the distance between the push rocker arm assembly 8 and the fixed stop 2 is greater than the total length of the fuel injector mixture ratio assembly body 13. This facilitates the placement of the fuel injector mixture ratio assembly body 13 between the push rocker arm assembly 8 and the fixed stop 2. The push rocker arm assembly 8 compresses and assembles the fuel injector mixture ratio assembly body 13. A limiting component 9 and a push rod 10 are mounted on the push rocker arm assembly 8. The push rod 10 passes through the limiting component 9, and the push rod 10 is connected to the limiting component 9. The components 9 form a sliding connection structure. Pushing the rocker arm assembly 8 causes the push rod 10 to move to the left. The limiting assembly 9 guides the push rod 10, preventing it from shifting during movement. An extension fixing rod 11 is mounted on the push rod 10, and a threaded rod 12 is mounted on the extension fixing rod 11. The extension fixing rod 11 is connected to the push rod 10 via the threaded rod 12. The threaded rod 12 facilitates the disassembly and assembly of the extension fixing rod 11 and the adjustment of the total length of the extension fixing rod 11 and the push rod 10, thus making it suitable for assembling different types of fuel injector mixture ratio components. (Fixed stop 2) A fuel injector mixture ratio assembly body 13 is installed between the extended fixing rod 11 and the fuel injector mixture ratio assembly body 13. The fuel injector mixture ratio assembly body 13 includes a mixture ratio assembly main body 1301, a mixture ratio assembly slot 1302, a spring assembly 1303, a spring seat 1304, and a retaining ring 1305. The mixture ratio assembly main body 1301 has a mixture ratio assembly slot 1302, and the spring assembly 1303 is sleeved on the mixture ratio assembly main body 1301. A spring seat 1304 is provided on the left side of the spring assembly 1303. A retaining ring 1305 can be engaged with the mixture ratio assembly slot 1302. During assembly, the spring seat 1304 is placed in the through hole 3 on the fixed stop 2, so that the spring seat 1304 abuts against the abutment groove 4. Then, the various components of the fuel injector mixture ratio assembly body 13 are pre-installed together. Except for the retaining ring 1305, the fuel injector mixture ratio assembly body 13 is fixed to the assembly device. By swinging and pushing the rocker arm assembly 8, the spring assembly 1303 is compressed until the mixture ratio assembly slot 1302 appears on the other side of the spring seat 1304. The retaining ring 1305 is put into the mixture ratio assembly slot 1302 to complete the assembly of the fuel injector mixture ratio assembly body 13.

[0036] Working Principle: When using this assembly device for the fuel injector mixture ratio assembly of an aircraft piston engine, firstly, when assembling the fuel injector mixture ratio assembly body 13, the spring seat 1304 is placed in the through hole 3 on the fixed stop 2, so that the spring seat 1304 abuts against the abutment groove 4. Then, the various components of the fuel injector mixture ratio assembly body 13 are pre-installed together. Except for the retaining ring 1305, the fuel injector mixture ratio assembly body 13 is fixed to the assembly device. By swinging and pushing the rocker arm assembly 8, the spring assembly 1303 is compressed until the mixture ratio assembly slot 1302 appears on the other side of the spring seat 1304. The retaining ring 1305 is then inserted into the mixture ratio assembly slot 1302, completing the assembly of the fuel injector mixture ratio assembly body 13. This completes a series of operations. Content not described in detail in this specification belongs to prior art known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for assembling a fuel injector mixture ratio assembly for an aircraft piston engine, comprising a fixed base (1) and a push rod (10), characterized in that: A fixing block (2) is installed on the left side of the fixing base (1), and a through hole (3) is provided on the fixing block (2), and an abutment groove (4) is provided on the left side of the fixing block (2). The upper surface of the fixed base (1) is fitted with a push rocker arm assembly (8) by a second limiting bolt (7), and a limiting assembly (9) and a push rod (10) are fitted on the push rocker arm assembly (8). An extended fixing rod (11) is fitted on the push rod (10), and a fuel injector mixture ratio assembly body (13) is fitted between the fixed block (2) and the extended fixing rod (11).

2. The apparatus for assembling the fuel injector mixture ratio assembly for an aircraft piston engine according to claim 1, characterized in that: The upper surface of the fixed base (1) is provided with a limiting groove (5), and the fixed block (2) is located on the upper surface of the limiting groove (5).

3. The apparatus for assembling the fuel injector mixture ratio assembly for an aircraft piston engine according to claim 1, characterized in that: The fixed stop (2) has a threaded groove. The fixed stop (2) and the fixed base (1) are connected by a first limiting bolt (6). The upper end of the first limiting bolt (6) is located in the threaded groove.

4. The apparatus for assembling the fuel injector mixture ratio assembly for an aircraft piston engine according to claim 1, characterized in that: The push rocker arm assembly (8) is located to the right of the fixed stop (2), and the distance between the push rocker arm assembly (8) and the fixed stop (2) is greater than the total length of the fuel injector mixture ratio assembly body (13).

5. The apparatus for assembling the fuel injector mixture ratio assembly for an aircraft piston engine according to claim 1, characterized in that: The push rod (10) passes through the limiting component (9), and the push rod (10) and the limiting component (9) form a sliding connection structure.

6. The apparatus for assembling a fuel injector mixture ratio component for an aircraft piston engine according to claim 1, characterized in that: A threaded rod (12) is installed on the extended fixing rod (11), and the extended fixing rod (11) is connected to the push rod (10) through the threaded rod (12).

7. The apparatus for assembling a fuel injector mixture ratio component for an aircraft piston engine according to claim 1, characterized in that: The fuel injector mixture ratio assembly body (13) includes a mixture ratio assembly body (1301), a mixture ratio assembly slot (1302), a spring assembly (1303), a spring seat (1304), and a retaining ring (1305). The mixture ratio assembly body (1301) has a mixture ratio assembly slot (1302), the spring assembly (1303) is sleeved on the mixture ratio assembly body (1301), and the spring seat (1304) is provided on the left side of the spring assembly (1303). The retaining ring (1305) can be engaged in the mixture ratio assembly slot (1302).

Images