Common rail oil injector dismounting tool

Abstract

The utility model discloses a common rail oil injector dismounting tool which comprises a connecting flange and a supporting plate. The support plate is sleeved on the outer side surface of the straight section of the oil sprayer; the connecting flange is located above the supporting plate, the connecting flange comprises a flange body, a through hole is formed in the middle of the flange body, longitudinal penetrating threaded holes are symmetrically formed in the two sides of the through hole, first bolts are in threaded connection with the interiors of the longitudinal penetrating threaded holes, a cutting hole is formed in the flange body, and the cutting hole is in threaded connection with the interiors of the first bolts. A through hole is formed in the flange body, a cutting hole is formed in the flange body, one end of the cutting hole is communicated with the through hole, the other end of the cutting hole extends to the outer surface of the flange body, a through unthreaded hole and a transverse threaded hole are formed in the two ends of the cutting hole respectively, and second bolts are connected into the unthreaded hole and the transverse threaded hole in a threaded mode. And use is fast and convenient, the oil sprayer cannot be damaged, and use convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly tools, in particular to a common rail injector disassembly tool. Background Art

[0002] The common rail system of a diesel engine includes a high-pressure fuel pump, a common rail chamber, a high-pressure fuel pipe, a fuel injector, an electronic control unit, sensors and actuators. The fuel is delivered to the common fuel supply pipe by the fuel pump, and precise control is achieved through the oil pressure in the common fuel supply pipe, so that the pressure in the high-pressure fuel pipe is independent of the diesel engine speed, which can greatly reduce the degree to which the diesel engine fuel supply pressure changes with the diesel engine speed.

[0003] The fuel injector is a precision device manufactured with exceptional precision and is the most critical and complex component in a diesel engine's common rail system. The electronically controlled fuel injector used in diesel engines differs from conventional injectors in its structure. Fuel is supplied from the side through a connector, and the lower portion is inserted into the injector guard tube in the cylinder head. A seal is provided by an O-ring above the injector to prevent lubricating oil from the cylinder head from entering the combustion chamber through the injector. The upper end only has a terminal for connecting to the wiring harness. After installation, the entire injector body, exposed outside the diesel engine, has a roughly uniform diameter, making removal difficult without a firm grip. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a common rail injector disassembly tool, which can quickly disassemble the injector, is quick and convenient to use, does not cause damage to the injector, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a common rail injector disassembly tool, comprising a connecting flange and a support plate;

[0006] The support plate is sleeved on the outer side surface of the straight section of the injector;

[0007] The connecting flange is located above the support plate, and the connecting flange includes a flange body, a through hole is provided in the middle position of the flange body, longitudinal threaded holes are symmetrically provided on both sides of the through hole, and a first bolt is threadedly connected to the longitudinal threaded hole, and a cut hole is provided on the flange body, one end of the cut hole is connected to the through hole, and the other end of the cut hole extends to the outer surface of the flange body, and a penetrating light hole and a transverse threaded hole are respectively provided at both ends of the cut hole, and a second bolt is threadedly connected to the light hole and the transverse threaded hole.

[0008] As a preferred technical solution of the present invention, the support plate is square in shape.

[0009] As a preferred technical solution of the present invention, an arc-shaped hole is provided on one side of the support plate, and the diameter of the arc-shaped hole is larger than the outer diameter of the straight section of the injector.

[0010] As a preferred technical solution of the present invention, the diameter of the through hole is larger than the outer diameter of the straight section of the injector.

[0011] As a preferred technical solution of the present invention, the central axes of the light hole and the transverse threaded hole coincide with each other.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the common rail injector disassembly tool is reasonably designed and ingeniously conceived; a support plate is provided to ensure a reliable fulcrum during disassembly while protecting the injector mounting components from damage; the shape of the support plate can be changed according to the injector installation environment; a connecting flange is provided to fix the exposed straight section of the injector; and by rotating the first bolt, the injector is driven upward under the reaction force, and then the injector is removed; the operation is simple and the disassembly and assembly are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the utility model in a disassembled state;

[0014] Figure 2 It is a structural diagram of the connecting flange.

[0015] In the figure: 1 connecting flange, 1-1 through hole, 1-2 longitudinal through threaded hole, 1-3 cut hole, 1-4 smooth hole, 1-5 transverse threaded hole, 2 first bolt, 3 second bolt, 4 support plate, 5 injector. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1-2 , the utility model provides a technical solution: a common rail injector disassembly tool, comprising a connecting flange 1 and a support plate 4;

[0018] The support plate 4 is sleeved on the outer side of the straight section of the injector 5. An arc-shaped hole is provided on one side of the support plate 4. The diameter of the arc-shaped hole is larger than the outer diameter of the straight section of the injector 5. In this embodiment, the support plate is square in shape.

[0019] The connecting flange 1 is located above the support plate 4. The connecting flange 1 includes a flange body. A through hole 1-1 is provided in the middle position of the flange body. The diameter of the through hole 1-1 is larger than the outer diameter of the straight section of the injector 5, so that it is convenient to be sleeved on the outer side of the straight section of the injector 5. Longitudinal through threaded holes 1-2 are symmetrically provided on both sides of the through hole 1-1. The inner thread of the longitudinal through threaded hole 1-2 is connected with the first bolt 2. A cut hole 1-3 is provided on the flange body. One end of the cut hole 1-3 is connected to the through hole 1-1, and the other end of the cut hole 1-3 extends to the outer surface of the flange body. The two ends of the cut hole 1-3 are respectively provided with a through light hole 1-4 and a transverse threaded hole 1-5. The central axes of the light hole 1-4 and the transverse threaded hole 1-5 coincide for screwing in the second bolt 3.

[0020] During use: the support plate 4 passes through the injector 5, and the four corners of the support plate 4 are pressed on the spring to be placed steadily. The inner diameter of the through hole 1-1 of the connecting flange 1 matches the outer diameter of the injector 5. The first bolt 2 is screwed into the longitudinal threaded hole 1-2, and the second bolt 3 is passed through the light hole 1-4 and screwed into the transverse threaded hole 1-5 and tightened, so that the connecting flange 1 clamps the injector 5. The first bolt 2 is slowly screwed in. Under the reverse force, the connecting flange 1 moves up together with the injector 5, and the injector 5 can be removed.

[0021] The shape of the support plate 4 of the present invention can be changed arbitrarily, ensuring a reliable fulcrum during disassembly while protecting the mounting components of the injector 5 from damage. By adopting a reliable positioning and clamping mechanical structure, the injector 5 is not damaged and rapid disassembly of the injector 5 is achieved.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A common rail injector disassembly tool, characterized by: It comprises a connecting flange (1) and a support plate (4); The support plate (4) is sleeved on the outer side surface of the straight section of the injector (5); The connecting flange (1) is located above the support plate (4), and the connecting flange (1) includes a flange body, a through hole (1-1) is provided in the middle position of the flange body, longitudinal through threaded holes (1-2) are symmetrically provided on both sides of the through hole (1-1), and the longitudinal through threaded holes (1-2) are internally threadedly connected to a first bolt (2), and a cut hole (1-3) is provided on the flange body, one end of the cut hole (1-3) is connected to the through hole (1-1), and the other end of the cut hole (1-3) extends to the outer surface of the flange body, and the two ends of the cut hole (1-3) are respectively provided with a through light hole (1-4) and a transverse threaded hole (1-5), and the light hole (1-4) and the transverse threaded hole (1-5) are internally threadedly connected to a second bolt (3).

2. A common rail injector removal tool according to claim 1, characterized in that: The support plate (4) is in the shape of a square.

3. The common rail injector removal tool according to claim 1, characterized in that: An arc-shaped hole is provided on one side of the support plate (4), and the diameter of the arc-shaped hole is larger than the outer diameter of the straight section of the injector (5).

4. A common rail injector removal tool according to claim 1, characterized in that: The diameter of the through hole (1-1) is larger than the outer diameter of the straight section of the injector (5).

5. The common rail injector removal tool according to claim 1, characterized in that: The central axes of the light hole (1-4) and the transverse threaded hole (1-5) coincide with each other.

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