A star combination type anti-rotation device for multi-cylinder engine oil injectors

Abstract

The present application relates to a kind of for multi-cylinder engine oil atomizer star combination type anti-rotation device, including annular limiting block, star locking piece and bowl-shaped spring, annular limiting block is combined with star locking piece to form main structure, its axial thickness matches with adjacent oil atomizer gap;Bowl-shaped spring is embedded in combination, provides axial elastic compensation.Anti-rotation device is inserted between adjacent oil atomizer, is prevented by the bending structure of star locking piece and the cooperation of oil atomizer rail pipe and is prevented from rotating, and it is avoided by the elastic compression of bowl-shaped spring vibration and noise.The present application does not change original oil atomizer structure, with simple structure, low in cost, easy to install, the advantages such as high reliability, can effectively prevent oil atomizer from rotating due to vibration, reduce pipeline failure rate.

Description

Technical Field

[0001] This invention belongs to the field of power machinery technology, specifically relating to a star-shaped combined anti-rotation device for multi-cylinder engine injectors. Background Technology

[0002] Modular configuration has become one of the current design requirements for products in the "three modernizations" (modularization, standardization, and modularization). Modular array structures are frequently seen in complex mechanical structures such as diesel engines, like the injectors of multi-cylinder diesel engines, reducing manufacturing costs and maintenance difficulty. However, the vibrations generated during diesel engine operation can cause parts to loosen, requiring corresponding anti-loosening measures designed according to the specific structural type. This invention addresses the problem of random rotation of a multi-cylinder diesel engine injector during operation, leading to frequent breakage of the connected inlet and return oil lines. Summary of the Invention

[0003] This invention provides a star-shaped combined anti-rotation device for multi-cylinder engine injectors, which solves the problem of random rotation of diesel engine injectors during operation, leading to malfunctions in the connected inlet and return oil lines, thereby preventing the injectors from loosening.

[0004] To solve the above technical problems, the present invention provides 1. a star-shaped combined anti-rotation device for injectors of multi-cylinder engines, characterized in that: it includes an annular limiting block (1), a star-shaped locking plate (2) and a cup-shaped spring (3), the annular limiting block (1) and the star-shaped locking plate (2) are combined to form a main structure, the axial thickness of which matches the gap between adjacent injectors; the cup-shaped spring (3) is embedded in the combination of the annular limiting block (1) and the star-shaped locking plate (2).

[0005] Furthermore, one side of the annular limiting block (1) is in contact with the plane adjacent to the injector to provide axial positioning.

[0006] Furthermore, the star-shaped locking piece (2) is provided with a bending structure that matches the outer contour of the injector rail.

[0007] Furthermore, the bowl-shaped spring (3) is an arched elastic element made of a thin metal sheet. It is compressed during assembly and does not fully reset after assembly, storing elastic potential energy to press the device.

[0008] Furthermore, the cup-shaped spring (3) is provided with a space around it to accommodate its radial deformation, ensuring that it does not fall off during compression and reset.

[0009] Furthermore, the annular limiting block (1) and the star-shaped locking piece (2) are manufactured separately and then assembled.

[0010] Furthermore, the locking foot of the star-shaped locking piece (2) is deformed by tapping and fits into the locking surface of the injector rail tube.

[0011] Furthermore, the anti-rotation device is inserted as a whole into the gap between adjacent injectors to form an interlocking structure, thereby restricting the rotation of the injectors.

[0012] Furthermore, the thickness of the annular limiting block (1) and the star-shaped locking piece (2) is adjusted according to different injector structures or usage scenarios.

[0013] Furthermore, the structure of the star-shaped locking piece (2) is adaptively designed according to the outer contour of different injector rails.

[0014] Beneficial effects: This invention utilizes the gaps between adjacent parts of the modularly designed injector to specifically design an anti-rotation device that is simple in structure, low in manufacturing cost, easy to install and remove, and reliable in use.

[0015] This invention does not change the original product structure. It utilizes the existing structure and assembly relationship of the original product and adds an anti-rotation device to complete the interlocking structure of adjacent injectors. This prevents the injectors from rotating during operation vibration, reduces the failure rate of the fuel supply system, and improves product reliability and maintenance costs.

[0016] Compared with the prior art, the present invention has the following advantages: (1) The present invention does not change the original product structure, but makes adaptive design by utilizing the existing structure and assembly relationship of the original product.

[0017] (2) The present invention completes the interlocking structure of adjacent injectors by adding an anti-rotation device, thereby preventing the injectors from rotating during operation vibration.

[0018] (3) The rotation of the fuel injector can be effectively restricted after the invention is used, which can reduce the failure rate of the fuel supply system, improve product reliability and maintenance costs. Attached Figure Description

[0019] Figure 1 The image shows a star-shaped anti-rotation device for injectors in multi-cylinder engines.

[0020] Figure 2 The diagram shows the assembly relationship of a star-shaped anti-rotation device for multi-cylinder engine injectors.

[0021] Figure 3 The diagram shows the orientation of a star-shaped anti-rotation device for a multi-cylinder engine injector.

[0022] Figure 4 This is a schematic diagram of the current multi-injector layout.

[0023] The figure shows an annular limiting block (1), a star-shaped locking plate (2), and a cup-shaped spring (3). Detailed Implementation

[0024] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below.

[0025] The present invention proposes a star-shaped combined anti-rotation device for injectors of multi-cylinder engines, comprising an annular limiting block (1), a star-shaped locking plate (2) and a cup-shaped spring (3); the cup-shaped spring (3) is embedded in the combination of the annular limiting block (1) and the star-shaped locking plate (2); the cup-shaped spring (3) has a certain space around it to accommodate the change in radial dimension of the cup-shaped spring (3) after axial compression, and it will not fall off during the disassembly and assembly process.

[0026] The axial thickness of the annular limiting block (1) and the star-shaped locking piece (2) is used to compensate for the gap between adjacent injectors and limit the rotation of the injectors. The axial dimension of the combined anti-rotation device is designed according to the injector gap, and is used to prevent the injector from continuing to rotate by realizing the change in the injector gap when a certain injector rotates.

[0027] The ring-shaped limiting block (1) uses the adjacent plane of one side of the injector to provide positioning, and the star-shaped locking piece (2) is designed with a bending structure that matches the shape of the circumferential recess structure of the adjacent side of the other injector to prevent the anti-rotation device from rotating randomly.

[0028] The star-shaped locking plate is made of a thin metal sheet of a certain thickness. After assembly, it is used to fix the anti-rotation device by tapping the locking foot. During assembly, the cup-shaped spring deforms through the gap between adjacent injectors, and uses elastic deformation to store the energy required for resetting when the assembly is in place. This ensures that the cup-shaped spring and the injector are in constant contact, avoiding vibration and noise during operation. The top of the anti-rotation device is designed with a rounded arc for assembly positioning.

[0029] The combined anti-rotation device is designed with a bowl-shaped spring (3), whose prominent elastic structure is used for axial clearance compensation after the anti-rotation device is assembled in place.

[0030] The annular limiting block (1) provides a basic skeleton and support structure for the anti-rotation device.

[0031] The star-shaped locking piece (2) is used to fix the anti-rotation device by striking the locking foot to match the locking surface of the injector rail tube.

[0032] The star-shaped locking piece (2) achieves the assembly and disassembly of the anti-rotation device through the chamfer design of the protruding structure with a local elastic thin sheet.

[0033] The cup-shaped spring (3) is deformed as it passes through the gap between the injectors, providing axial clamping force when assembled, thus avoiding vibration and noise during operation.

[0034] The anti-rotation device, consisting of annular limiting block (1) and star-shaped locking plate (2), is manufactured separately and then assembled, reducing manufacturing difficulty and cost. Alternatively, it can be formed in one piece using lightweight additive manufacturing technology after assessing the stress conditions.

[0035] The thickness of the annular limiting block (1) and the star-shaped locking piece (2) can be adjusted according to other application scenarios with similar structures.

[0036] The cup-shaped spring (3) uses a metal sheet of appropriate thickness, which provides axial clamping force when assembled by deformation, thus avoiding vibration and noise during operation.

[0037] The bowl-shaped spring (3) has an arched protrusion structure for preventing the rotation device from being inserted into and released from the gap.

[0038] The structure of the star-shaped locking plate (2) can be adjusted according to the structural characteristics of different products.

[0039] The cup-shaped spring (3) protrusion structure is not fully reset after assembly, and stores a certain amount of elastic force to press the anti-rotation device to avoid vibration and noise during operation.

[0040] The anti-rotation device is designed with an arc that matches the injector rail for positioning during assembly.

[0041] By inserting the anti-rotation device of the present invention into the gap between the injectors, an interlocking structure is formed between the injectors, preventing the injectors from rotating during operation and thus causing connection pipeline failure.

[0042] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A star-shaped combined anti-rotation device for injectors in multi-cylinder engines, characterized in that: It includes an annular limiting block (1), a star-shaped locking plate (2) and a cup-shaped spring (3). The annular limiting block (1) and the star-shaped locking plate (2) are combined to form the main structure, and its axial thickness matches the gap between adjacent injectors. The cup-shaped spring (3) is embedded in the combination of the annular limiting block (1) and the star-shaped locking plate (2).

2. The star-shaped combined anti-rotation device for multi-cylinder engine injectors according to claim 1, characterized in that: One side of the annular limiting block (1) is in contact with the plane adjacent to the injector, providing axial positioning.

3. The star-shaped combined anti-rotation device for multi-cylinder engine injectors according to claim 1, characterized in that: The star-shaped locking piece (2) has a bending structure that matches the outer contour of the injector rail.

4. A star-shaped combined anti-rotation device for multi-cylinder engine injectors according to claim 1, characterized in that: The bowl-shaped spring (3) is an arched elastic element made of thin metal sheet. It is compressed during assembly and does not fully reset after assembly, storing elastic potential energy to press the device.

5. A star-shaped combined anti-rotation device for multi-cylinder engine injectors according to claim 1, characterized in that: The cup-shaped spring (3) is surrounded by a space to accommodate its radial deformation, ensuring that it does not fall off during compression and reset.

6. A star-shaped combined anti-rotation device for multi-cylinder engine injectors according to claim 1, characterized in that: The annular limiting block (1) and the star-shaped locking piece (2) are manufactured separately and then assembled.

7. A star-shaped combined anti-rotation device for multi-cylinder engine injectors according to claim 1, characterized in that: The locking foot of the star-shaped locking piece (2) is deformed by tapping and fits into the locking surface of the injector rail tube.

8. A star-shaped combined anti-rotation device for multi-cylinder engine injectors according to claim 1, characterized in that: The anti-rotation device is inserted as a whole into the gap between adjacent injectors to form an interlock structure and restrict the rotation of the injectors.

9. A star-shaped combined anti-rotation device for multi-cylinder engine injectors according to claim 1, characterized in that: The thickness of the annular limiting block (1) and the star-shaped locking piece (2) is adjusted according to different injector structures or usage scenarios.

10. A star-shaped combined anti-rotation device for multi-cylinder engine injectors according to claim 1, characterized in that: The structure of the star-shaped locking piece (2) is adapted to the outer contour of different injector rails.

Images