Special detacher for diesel injector

Abstract

The utility model discloses a special detacher for a diesel injector, which comprises a force bearing plate, positioning sleeves are respectively arranged on two sides of the bottom of the force bearing plate, the positioning sleeves are sleeved on gland mounting bolts of a cylinder body, a mounting hole is arranged on the force bearing plate, a pull-assisting rod is mounted in the mounting hole, and the pull-assisting rod is sleeved on the gland mounting bolts of the cylinder body. The lower rod part of the pulling assisting rod is a combination part with external threads, and the combination part is fixedly connected with a pressure regulating screw locking nut on the oil sprayer through the external threads; the upper rod part of the pulling assisting rod is a driving part with an external thread, and the driving part is sleeved with a driving nut. According to the utility model, positioning is realized through the positioning sleeve, the driving nut is screwed after the combination part is fixedly connected with the fuel injector by screwing the pulling-assisting rod, and the fuel injector inserted into the cylinder body can be easily and stably carried and taken out by the pulling-assisting rod under the action of the driving nut, so that the operation and the use are quick and convenient, and the fuel injector is not easy to damage in the dismounting process.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engine maintenance, in particular to a special disassembler for a diesel engine injector. Background Art

[0002] A locomotive is a self-propelled vehicle that pulls or pushes railway vehicles without carrying any commercial loads. To ensure stable and reliable operation in good condition, the fuel injectors on the engine must be inspected and maintained regularly.

[0003] refer to Figure 1 The diesel engine's fuel injector 1 is directly inserted into the mounting hole on the engine cylinder block 2. The injector gland (not shown) is then installed and secured with two gland mounting bolts 3 (welded to the cylinder block 2) and a gland fastening nut. During disassembly and maintenance, the gland fastening nuts are first loosened, the injector gland removed from the gland mounting bolts 3, and then the injector 1 is removed from the cylinder block 2 using a hammer. This disassembly method using a hammer is inconvenient, time-consuming, and labor-intensive. Furthermore, the injector can be easily damaged during disassembly. Utility Model Content

[0004] In order to overcome the above shortcomings, the technical problem to be solved by the utility model is to provide a special remover for diesel engine injectors, which is quick and convenient to operate and use, and is not likely to damage the injector during the disassembly process.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a special disassembler for diesel engine injectors, comprising a load-bearing plate, wherein positioning sleeves are respectively provided on both sides of the bottom of the load-bearing plate, and the positioning sleeves are sleeved on the pressure cover mounting bolts of the cylinder body. A mounting hole is opened on the load-bearing plate, and an auxiliary pull-out rod is installed in the mounting hole. The lower rod portion of the auxiliary pull-out rod is a coupling portion with an external thread, and the coupling portion is fixedly connected to the pressure regulating screw locking nut on the injector through the external thread; the upper rod portion of the auxiliary pull-out rod is a driving portion with an external thread, and a driving nut is sleeved on the driving portion.

[0006] As a preferred technical solution, a limiting ring is provided between the coupling portion of the pull-out assisting rod and the driving portion.

[0007] As a preferred technical solution, a gasket is mounted on the rod section of the pull-out assist rod located between the drive nut and the load-bearing plate.

[0008] As a preferred technical solution, a force application groove is provided on the top surface of the auxiliary pulling rod.

[0009] As a preferred technical solution, the force-applying groove is a straight groove or a cross groove.

[0010] As a preferred technical solution, the load-bearing plate is in the shape of an elongated strip and gradually narrows at both ends.

[0011] Due to the adoption of the above technical solution, the utility model has at least the following beneficial effects: when disassembling and maintaining the injector, the remover is mounted on the pressure cover mounting bolts of the cylinder body through the positioning sleeves on both sides of the bottom of the bearing plate to achieve positioning, and after the auxiliary pull-out rod is screwed so that its joint is fixedly connected with the pressure regulating screw locking nut on the injector, the drive nut is screwed. Under the action of the drive nut, the auxiliary pull-out rod will easily and smoothly carry out the injector inserted in the cylinder body, and the operation is quick and convenient, and the injector is not easily damaged during the disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0013] Figure 1 This is a schematic diagram of the installation status of the injector;

[0014] Figure 2 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0015] Figure 3 This is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0016] Figure 4 It is a schematic diagram of the exploded structure of an embodiment of the present utility model;

[0017] Figure 5 This is a state reference diagram of the embodiment of the utility model when in use. DETAILED DESCRIPTION

[0018] The present invention is further described below with reference to the accompanying drawings and examples. In the detailed description that follows, certain exemplary embodiments of the present invention are described by way of illustration only. It goes without saying that those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of the claims.

[0019] like Figures 2 to 4As shown, a dedicated disassembler for diesel engine injectors includes a bearing plate 4. In this embodiment, the bearing plate 4 is long and tapered at both ends, making it easy to place within the limited space above the cylinder block and the injector during use. Positioning sleeves 5 are provided on both sides of the bottom of the bearing plate 4. During use, the positioning sleeves 5 are fitted onto the cylinder block's gland mounting bolts 3 to achieve quick positioning. A mounting hole 6 is provided in the center of the bearing plate 4. An auxiliary puller 7 is mounted within the mounting hole 6. The lower portion of the auxiliary puller 7 is a coupling portion 71 with external threads. During use, the coupling portion 71 can be fixedly connected to the pressure-adjusting screw lock nut 10 on the injector 1 via external threads, thereby integrating the auxiliary puller and the injector. The upper portion of the auxiliary puller 7 is a drive portion 72 with external threads. A drive nut 8 is fitted onto the drive portion 72. A gasket 9 is fitted onto the rod section of the auxiliary puller 7 located between the drive nut 8 and the bearing plate 4.

[0020] In order to prevent the auxiliary extraction rod 7 from falling out of the mounting hole 6 , a limiting ring 73 is provided between the coupling portion 71 and the driving portion 72 of the auxiliary extraction rod 7 .

[0021] In order to facilitate the use of a screwdriver to screw the auxiliary extraction rod 7, thereby fixing the joint of the auxiliary extraction rod 7 to the pressure regulating screw locking nut 10 on the injector 1, it is best to open a force groove 74 on the top surface of the auxiliary extraction rod 7. The force groove 74 can be a straight groove or a cross groove.

[0022] refer to Figure 5 The top of the injector 1 is a pressure-regulating screw locking nut 10. When the injector 1 needs to be disassembled and maintained, the remover is first sleeved on the pressure cover mounting bolts 3 on the upper end face of the cylinder body 2 through the positioning sleeves 5 on both sides of the bottom of the bearing plate 4 to achieve positioning. At this time, the auxiliary pull-out rod 7 is just aligned with the pressure-regulating screw locking nut 10 on the injector 1, and then the auxiliary pull-out rod 7 is screwed so that its joint 71 is fixedly connected with the pressure-regulating screw locking nut 10, and then the driving nut 8 is screwed. Under the force of the driving nut 8 on the driving part 72, the auxiliary pull-out rod 7 will move upward, thereby easily and smoothly carrying the injector 1 inserted in the cylinder body 2 upward and out. Compared with the traditional hammer-beating disassembly method, the remover is quick and convenient to operate and the injector is not easily damaged during the disassembly process.

[0023] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A special disassembler for diesel engine injectors, characterized by: It includes a load-bearing plate, and positioning sleeves are respectively provided on both sides of the bottom of the load-bearing plate. The positioning sleeves are sleeved on the pressure cover mounting bolts of the cylinder body. A mounting hole is opened on the load-bearing plate, and an auxiliary pull-out rod is installed in the mounting hole. The lower rod part of the auxiliary pull-out rod is a joint part with an external thread, and the joint part is fixedly connected to the pressure regulating screw locking nut on the injector through the external thread; the upper rod part of the auxiliary pull-out rod is a driving part with an external thread, and a driving nut is sleeved on the driving part.

2. The diesel engine fuel injector remover according to claim 1, characterized in that: A limiting ring is provided between the coupling portion of the pulling-assisting rod and the driving portion.

3. The diesel engine fuel injector removal tool according to claim 1, characterized in that: A gasket is sleeved on the rod section of the pull-out assisting rod located between the driving nut and the bearing plate.

4. The diesel engine fuel injector removal tool according to any one of claims 1 to 3, characterized in that: The top end surface of the pulling-assisting rod is provided with a force-applying groove.

5. The diesel engine injector remover as claimed in claim 4, characterized in that: The force-applying groove is a straight groove or a cross groove.

6. The diesel engine fuel injector removal tool according to claim 1, characterized in that: The bearing plate is in the shape of an elongated strip and gradually narrows at both ends.

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