Tool for disassembling and assembling gasket of oil sprayer

Abstract

A containing groove is formed in the outer side of the periphery of a support, and the containing groove is used for containing an oil sprayer; the adjusting lead screw is in threaded connection with the support, and the bottom end of the adjusting lead screw vertically penetrates into the containing groove from the top of the support. The gasket pressing sleeve is rotationally connected with the bottom of the adjusting lead screw, a gasket pressing groove is formed in the bottom of the gasket pressing sleeve, and an oil sprayer avoiding groove is formed in the inner top wall of the gasket pressing groove. During use, the oil sprayer is placed in the containing groove to be limited, so that the oil sprayer and the gasket pressing groove are coaxial, then the oil sprayer gasket is placed in the gasket pressing groove, the adjusting lead screw is rotated to gradually move the gasket pressing sleeve downwards, and the oil sprayer gasket is installed on the oil sprayer in a pressing mode. In the process, circular motion is changed into linear motion through rotation of the adjusting lead screw, constant and uniform stress in the press-fitting process is achieved, it can be guaranteed that the oil sprayer gasket is press-fitted to the standard position by controlling the number of turns of rotation, and therefore the assembling and press-fitting quality is controlled, and the sealing face of the gasket is prevented from being damaged.

Description

Technical Field

[0001] This application relates to the field of engine disassembly and assembly tools, and in particular to an injector gasket disassembly and assembly tool. Background Technology

[0002] In engine combustion development tests, adjusting the thickness of the gasket is intended to simulate the impact of cylinder head size deviations and changes in injector protrusion on the engine, as well as the effects on fuel consumption, smoke opacity, and NOx, in actual production, and to verify the engine's robustness. Therefore, injector gaskets are often replaced frequently.

[0003] Traditional injector gasket pressing mainly relies on matching the injector gasket size with a sleeve, and then tapping the sleeve to press the injector gasket in place. The tapping force is determined by experience, which can lead to the following problems:

[0004] (1) Excessive force will damage the gasket sealing surface and cause it to leave indentations; insufficient force will not ensure that the gasket is pressed into the standard position, resulting in large precision deviation and making it difficult to fully control the assembly quality.

[0005] (2) Used injectors are covered with carbon deposits, making them difficult to disassemble and reassemble using existing tools, resulting in low efficiency. Summary of the Invention

[0006] This application provides a tool for removing and installing injector gaskets, which solves the problem in related technologies where the force used to install injector gaskets by striking with a sleeve is difficult to control, leading to damage to the gaskets or pressing them into the standard position.

[0007] Firstly, a tool for removing and installing injector gaskets is provided, comprising:

[0008] The support has a receiving groove on its outer periphery for holding the fuel injector;

[0009] An adjusting screw is threadedly connected to the support, and its bottom end extends vertically from the top of the support into the receiving groove;

[0010] A gasket sleeve is rotatably connected to the bottom of the adjusting screw, and a gasket groove is provided at the bottom of the gasket groove, with an injector clearance groove provided on the top wall of the gasket groove.

[0011] In some embodiments, the support has a guide channel located above the receiving groove inside;

[0012] The adjusting screw extends vertically through a guide channel from the top of the support and into the receiving groove; guide members connected to the gasket pressure sleeve are slidably provided in the guide channel on both sides of the adjusting screw.

[0013] In some embodiments, a vertical limiting groove is provided on the side wall of the guide channel;

[0014] The guide includes a vertical plate, on which a guide slider that slides within the vertical limiting groove is connected.

[0015] In some embodiments, a rotating sleeve is fixedly connected to the bottom of the adjusting screw;

[0016] The top of the gasket pressure sleeve is rotatably inserted into the rotating sleeve, and the guide is provided with a lifting block for contacting the top of the rotating sleeve; the gasket pressure sleeve is provided with a telescopic abutment, which is used to abut the injector gasket in the gasket pressure groove.

[0017] In some embodiments, the gasket sleeve includes a cylinder with a closed top and an open bottom to form the gasket groove; the telescopic support member is provided on the outer periphery of the cylinder; a connecting cylinder is provided at the top of the cylinder, and the connecting cylinder is rotatably inserted into the rotating sleeve; the injector clearance groove passes through the top of the cylinder and extends into the connecting cylinder.

[0018] In some embodiments, the gasket sleeve includes a circular block with two arc-shaped lugs at its bottom. The two arc-shaped lugs are symmetrically arranged about one diameter of the circular block to form the gasket groove. The telescopic abutment is provided on each of the two arc-shaped lugs. A connecting cylinder is provided at the top of the circular block and is rotatably inserted into the rotating sleeve. The injector clearance groove passes through the circular block and extends into the connecting cylinder.

[0019] In some embodiments, the telescopic abutment includes a screw; a first threaded hole is provided on the outer peripheral side of the cylinder.

[0020] In some embodiments, the top of the adjusting screw is provided with a throttle.

[0021] In some embodiments, the top of the support is provided with a mounting block, and the mounting block has a vertical threaded hole that communicates with the guide channel and is threadedly connected to the adjusting screw.

[0022] In some embodiments, the support includes a vertical plate portion, the bottom of which is connected to two spaced-apart horizontal plates, the two horizontal plates forming a second working groove;

[0023] The top of the vertical plate is provided with a rectangular block located directly above the horizontal plate, and the mounting block is disposed on the rectangular block; a first working groove is formed between the rectangular block and the horizontal plate; the first working groove and the second working groove form the receiving groove;

[0024] The vertical plate is provided with scale markings that are parallel to the adjusting screw.

[0025] The beneficial effects of the technical solution provided in this application include:

[0026] This application provides a tool for removing and installing injector gaskets. A receiving groove is provided on the outer side of the support for holding the injector. An adjusting screw is threadedly connected to the support, and its bottom end extends vertically from the top of the support into the receiving groove. A gasket sleeve is rotatably connected to the bottom of the adjusting screw, and its bottom has a gasket groove. The top wall of the gasket groove has an injector clearance groove. In use, the injector is placed in the receiving groove for positioning to ensure coaxiality between the injector and the gasket groove. Then, the injector gasket is placed into the gasket groove. Rotating the adjusting screw gradually moves the gasket sleeve downwards to press the injector gasket onto the injector. This process uses the rotation of the adjusting screw to convert circular motion into linear motion, achieving constant and uniform force during pressing. Furthermore, by controlling the number of rotations, the injector gasket can be pressed into the standard position. This avoids the problems that occur when using a sleeve to hammer the gasket, which can damage the gasket sealing surface and leave indentations if too much force is applied, or if too little force is applied and the gasket is not pressed into the standard position, resulting in large accuracy deviations and difficulty in fully controlling assembly quality. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is an overall schematic diagram of the injector gasket removal and installation tool provided in the embodiments of this application;

[0029] Figure 2 This is a front view of the injector gasket removal and installation tool provided in an embodiment of this application;

[0030] Figure 3 A side view of the injector gasket removal and installation tool provided in an embodiment of this application;

[0031] Figure 4 This is a schematic diagram showing the connection between the adjusting screw and the rotating sleeve provided in an embodiment of this application.

[0032] In the diagram: 1. Support; 100. Vertical limiting groove; 101. Mounting block; 102. Vertical plate; 103. Horizontal plate; 104. Rectangular block; 2. First working groove; 3. Second working groove; 4. Adjusting screw; 5. Shim sleeve; 6. Shim groove; 7. First threaded hole; 8. Arc-shaped stop ear; 9. Rotating sleeve; 10. Connecting cylinder; 11. Guide component; 1101. Guide slider; 1102. Lifting block; 12. Turning handle. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In engine combustion development tests, adjusting the thickness of the gasket is intended to simulate the impact of cylinder head size deviations and changes in injector protrusion on the engine, as well as the effects on fuel consumption, smoke opacity, and NOx, in actual production, and to verify the engine's robustness. Therefore, injector gaskets are often replaced frequently.

[0035] Traditional injector gasket pressing mainly relies on matching the injector gasket size with a sleeve, and then tapping the sleeve to press the injector gasket in place. The tapping force is determined by experience, which can lead to the following problems:

[0036] (1) Excessive force will damage the gasket sealing surface and cause it to leave indentations; insufficient force will not ensure that the gasket is pressed into the standard position, resulting in large precision deviation and making it difficult to fully control the assembly quality.

[0037] (2) Used injectors are covered with carbon deposits, making them difficult to disassemble and reassemble using existing tools, resulting in low efficiency.

[0038] To address the above issues, this application provides a tool for removing and installing injector gaskets, which will be explained in detail below.

[0039] Firstly, it addresses the problem that the force used in related technologies to install injector gaskets with a sleeve and hammering is difficult to control, leading to gasket damage or being pressed into the standard position.

[0040] Please see Figures 1-3 A tool for removing and installing fuel injector gaskets, comprising:

[0041] Support 1 has a receiving groove on its outer periphery for holding the fuel injector;

[0042] Adjusting screw 4 is threaded to support 1, and its bottom end extends vertically from the top of support 1 into the receiving groove;

[0043] The gasket sleeve 5 is rotatably connected to the bottom of the adjusting screw 4, and its bottom is provided with a gasket groove 6, and the top wall of the gasket groove 6 is provided with an injector clearance groove.

[0044] In use, the injector is placed in the receiving groove for positioning to ensure that the injector and the gasket groove 6 are coaxial. Then, the injector gasket is placed into the gasket groove 6, and the adjusting screw 4 is rotated to gradually move the gasket sleeve 5 downward to press the injector gasket onto the injector. The above process uses the rotation of the adjusting screw 4 to convert the circular motion into linear motion, so as to achieve constant and uniform force during the pressing process. That is, when the magnitude of the rotational force applied to the adjusting screw 4 is uneven, the overall vertical displacement of the adjusting screw is not affected by the force, but by the number of rotations. Therefore, the uniformity of the force during pressing can be guaranteed. In addition, by utilizing the self-locking structural characteristics of the adjusting screw 4, the number of rotations can be controlled to ensure that the injector gasket is pressed into the standard position, providing guidance for the pressing process and allowing the degree of pressing to be known. This avoids the problems that occur when using a sleeve to press the gasket, where excessive force will damage the gasket sealing surface and leave indentations, while insufficient force will fail to ensure that the gasket is pressed into the standard position, resulting in large accuracy deviations and making it difficult to fully control the assembly quality.

[0045] In some preferred embodiments, to ensure that the injector and the gasket groove 6 remain coaxial during the process of the adjusting screw 4 pushing the gasket sleeve 5 downward, the following settings are made:

[0046] The support 1 has a guide channel located above the receiving groove inside;

[0047] The adjusting screw 4 extends vertically through the guide channel from the top of the support 1 and into the receiving groove; in the guide channel, and on both sides of the adjusting screw 4, there are guide members 11 that are connected to the gasket sleeve 5.

[0048] The guide component 11 ensures that the gasket sleeve 5 will not shift during movement, further guaranteeing the accuracy of the pressing position.

[0049] The guide channel has a vertical limiting groove 100 on its side wall;

[0050] The guide 11 includes a vertical plate, on which a guide slider 1101 that slides within the vertical limiting groove 100 is connected. This design limits the downward movement of the gasket sleeve 5, preventing excessive rotation of the adjusting screw 4 and thus avoiding over-pressing. It also further ensures the accuracy of the pressing position.

[0051] In some preferred embodiments, the press-fit process has been described above. To address the problems of carbon deposits on used injectors, making disassembly and assembly difficult and inefficient using existing tools, the following settings are provided:

[0052] First, we should understand that the injector gasket for each experiment is a disposable part. Therefore, there is no need to consider damage during removal. Thus, to enable the press-fitting tool to perform disassembly, and based on considerations of reducing design costs and simplifying the structure, the following solution was designed:

[0053] A rotating sleeve 9 is fixedly connected to the bottom of the adjusting screw 4;

[0054] The top of the gasket pressure sleeve 5 is rotatably inserted into the rotating sleeve 9. The guide 11 is provided with a lifting block 1102 for contacting the top of the rotating sleeve 9. The gasket pressure sleeve 5 is provided with a telescopic support member, which is used to support the injector gasket in the gasket pressure groove 6.

[0055] During the pressing process, the telescopic support does not press the injector gasket in the gasket groove 6. The adjusting screw 4 is rotated to move the gasket sleeve 5 downward, thus pressing the injector gasket into the appropriate position. When disassembly is required, the telescopic support presses the injector gasket in the gasket groove 6 and locks the injector gasket in the gasket groove 6. Then, the adjusting screw 4 is rotated in the opposite direction, and the rotating sleeve 9 moves upward, eventually pressing against the lifting block 1102. This can drive the injector gasket and the gasket sleeve 5 to be pulled upward as a whole, thereby completing the disassembly. This solves the problem of carbon deposits adhering to used injectors, making disassembly and assembly difficult and inefficient with existing tools.

[0056] Furthermore, to simplify the structure, the structural form of the gasket sleeve 5 is explained as follows:

[0057] The first type includes a gasket sleeve 5 comprising a cylinder with a closed top and an open bottom to form a gasket groove 6; a telescopic support member is provided on the outer periphery of the cylinder; a connecting cylinder 10 is provided at the top of the cylinder, and the connecting cylinder 10 is rotatably inserted into the rotating sleeve 9; an injector clearance groove passes through the top of the cylinder and extends into the connecting cylinder 10.

[0058] The second type includes a gasket pressure sleeve 5 comprising a circular block with two arc-shaped lugs 8 at its bottom. These lugs 8 are symmetrically arranged about one diameter of the circular block to form a gasket pressure groove 6. Each of the two arc-shaped lugs 8 has a telescopic support member. A connecting cylinder 10 is located at the top of the circular block and is rotatably inserted into a rotating sleeve 9. An injector clearance groove passes through the circular block and extends into the connecting cylinder 10. This second type of structure facilitates the removal of the injector gasket from the gasket pressure groove 6.

[0059] Both of the above structures are realized. The connecting cylinder 10 is rotatably inserted into the rotating sleeve 9, avoiding the design of a complex connection structure. By cooperating with the lifting block 1102, the overall upward pulling action can be achieved, which also facilitates the assembly of the entire injector gasket disassembly and assembly tool.

[0060] The telescopic support component includes screws; a first threaded hole 7 is provided on the outer circumference of the cylinder. This structure maximizes the structure of the telescopic support component, simplifies the design, reduces costs, and meets design requirements.

[0061] In some preferred embodiments, the top of the adjusting screw 4 is provided with a handle 12; the handle 12 facilitates the rotation of the adjusting screw 4; the top of the support 1 is provided with a mounting block 101, the mounting block 101 having a vertical threaded hole that communicates with the guide channel and is threadedly connected to the adjusting screw 4. This embodiment details the installation position.

[0062] The support 1 includes a vertical plate portion 102, and the bottom of the vertical plate portion 102 is connected to two horizontal plate portions 103 that are spaced apart, and the two horizontal plate portions 103 form a second working groove 3.

[0063] The top of the vertical plate portion 102 is provided with a rectangular block portion 104 located directly above the horizontal plate portion 103, and the mounting block 101 is provided on the rectangular block portion 104; a first working groove 2 is formed between the rectangular block portion 104 and the horizontal plate portion 103; the first working groove 2 and the second working groove 3 form a receiving groove.

[0064] The vertical plate 102 is provided with scale markings that are parallel to the adjusting screw 4.

[0065] In this embodiment, the support 1 structure is described as a whole, and the structure of the receiving groove is described in detail so that it can limit the receiving of the injector. In addition, the scale markings can further assist in judging whether the pressing position is accurate, avoiding the need to count the number of turns for confirmation.

[0066] In summary, the injector gasket removal and installation tool transforms circular motion into linear motion, allowing for smooth up-and-down movement of the flat pressing surface without unnecessary movement, minimizing surface damage to parts caused by the tool. Precise adjustments to the scale markings ensure accurate positioning for each installation. Combined with guide 11, rotating sleeve 9, and telescopic support, it enables quick removal of the injector gasket.

[0067] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0068] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A tool for removing and installing fuel injector gaskets, characterized in that, It includes: Support (1), with a receiving groove on its outer side, for placing the injector; Adjusting screw (4), which is threaded to the support (1), and its bottom end extends vertically from the top of the support (1) into the receiving groove; The gasket sleeve (5) is rotatably connected to the bottom of the adjusting screw (4), and its bottom is provided with a gasket groove (6), and the top wall of the gasket groove (6) is provided with an injector clearance groove.

2. The injector gasket removal and installation tool as described in claim 1, characterized in that: The support (1) has a guide channel located above the receiving groove inside; The adjusting screw (4) extends vertically through the guide channel from the top of the support (1) and into the receiving groove; in the guide channel, and on both sides of the adjusting screw (4), there are guide members (11) that are connected to the gasket sleeve (5).

3. The injector gasket removal and installation tool as described in claim 2, characterized in that: The guide channel is provided with a vertical limiting groove (100) on its side wall. The guide (11) includes a vertical plate, on which a guide slider (1101) is connected to slide within the vertical limiting groove (100).

4. The injector gasket removal and installation tool as described in claim 2, characterized in that: The bottom of the adjusting screw (4) is fixedly connected to a rotating sleeve (9). The top of the gasket sleeve (5) is rotatably inserted into the rotating sleeve (9), and the guide (11) is provided with a lifting block (1102) for contacting the top of the rotating sleeve (9); the gasket sleeve (5) is provided with a telescopic abutment, which is used to abut the injector gasket in the gasket groove (6).

5. The injector gasket removal and installation tool as described in claim 4, characterized in that: The gasket sleeve (5) includes a cylinder with a closed top and an open bottom to form the gasket groove (6); the telescopic support member is provided on the outer periphery of the cylinder; the top of the cylinder is provided with a connecting cylinder (10), which is rotatably inserted into the rotating sleeve (9); the injector clearance groove passes through the top of the cylinder and extends into the connecting cylinder (10).

6. The injector gasket removal and installation tool as described in claim 4, characterized in that: The gasket sleeve (5) includes a circular block, and the bottom of the circular block is provided with two arc-shaped lugs (8). The two arc-shaped lugs (8) are symmetrically arranged with one diameter of the circular block as the axis of symmetry to form the gasket groove (6). The telescopic support member is provided on both arc-shaped lugs (8). The top of the circular block is provided with a connecting cylinder (10), which is rotatably inserted into the rotating sleeve (9). The injector clearance groove passes through the circular block and extends into the connecting cylinder (10).

7. The injector gasket removal and installation tool as described in claim 5, characterized in that: The telescopic support includes a screw; a first threaded hole (7) is provided on the outer circumference of the cylinder.

8. The injector gasket removal and installation tool as described in claim 1, characterized in that: The top of the adjusting screw (4) is provided with a throttle (12).

9. The injector gasket removal and installation tool as described in claim 2, characterized in that: The support (1) has a mounting block (101) on its top. The mounting block (101) has a vertical threaded hole that is connected to the guide channel and threadedly connected to the adjusting screw (4).

10. The injector gasket removal and installation tool as described in claim 9, characterized in that: The support (1) includes a vertical plate (102), and the bottom of the vertical plate (102) is connected to two horizontal plates (103) that are spaced apart, and the two horizontal plates (103) form a second working groove (3). The top of the vertical plate (102) is provided with a rectangular block (104) located directly above the horizontal plate (103), and a mounting block (101) is provided on the rectangular block (104); a first working groove (2) is formed between the rectangular block (104) and the horizontal plate (103); the first working groove (2) and the second working groove (3) form the receiving groove; The vertical plate (102) is provided with scale markings that are parallel to the adjusting screw (4).

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