Ejector fixing device

Abstract

The utility model discloses an ejector fixing device which comprises a sleeve, a pressing plate, a pressing plate fastener and a sleeve fastener. The sleeve comprises a concave bottom cover and a supporting part. A through hole is formed in the center of the inner side of the concave bottom cover and used for penetrating and fixing an ejector nozzle and centering. A rubber gasket is arranged between the through hole and the ejector nozzle; the outer side of the concave bottom cover is buckled in an opening of the bomb containing parent body, the supporting part connected with the concave bottom cover is connected with the bomb containing parent body through a sleeve fastener, so that the sleeve is fixed on the bomb containing parent body, and a rubber gasket is padded between the supporting part and the bomb containing parent body; and the pressing plate is clamped on the ejector and is connected with the sleeve through the pressing plate fastener, so that the ejector is fixed on the x axis and the y axis. According to the ejector fixing device, the ejector is fixed to the testing device, the fixing effect of the ejector is good, and the good damping effect is achieved through the arrangement of the rubber gasket and the rubber gasket.

Description

Technical Field

[0001] The utility model relates to the field of injectors, in particular to an injector fixing device. Background Art

[0002] The injector is the core component of the engine, and the fuel injection characteristics directly affect the power, economy and emission characteristics of the whole machine. For the measurement of injector injection characteristics, the impulse method is a highly accurate and reliable test method. It measures the force signal of the fuel outlet through a force sensor, and obtains the fuel injection characteristics after a series of conversions. During the test, the higher injection pressure will cause the injector to vibrate, and the vibration will cause the fuel sprayed from the nozzle to splash, making it impossible for the force sensor to capture all the fuel injection, resulting in inaccurate test results. Therefore, the fixed installation of the injector is particularly important during the test. Utility Model Content

[0003] The purpose of this application is to provide an injector fixing device, which is suitable for fixing the injector for impulse method testing, has good fixing effect and has shock absorption function. The specific scheme is as follows:

[0004] An injector fixing device comprises a sleeve, a pressing plate, a pressing plate fastener and a sleeve fastener;

[0005] The sleeve includes a concave bottom cover and a supporting part. The inner side of the concave bottom cover is provided with a through hole for penetrating and fixing the injector nozzle. The outer side of the concave bottom cover is snapped into the opening of the bomb container matrix. The supporting part connected to the concave bottom cover is connected to the bomb container matrix through a sleeve fastener, so that the sleeve is fixed on the bomb container matrix.

[0006] The pressure plate is clamped on the ejector and connected to the sleeve through the pressure plate fastener, so that the ejector is fixed in both the x-axis and the y-axis.

[0007] Furthermore, the through hole is located at the center of the concave bottom cover, and the shape of the through hole is adapted to the shape of the injector nozzle, so that the injector nozzle is fixed and centered.

[0008] Furthermore, a rubber gasket is provided between the through hole and the injector nozzle to attenuate vibrations generated along the y-axis direction when the injector is working.

[0009] Furthermore, a rubber gasket is provided between the supporting portion of the sleeve and the bullet-containing matrix to attenuate vibrations generated along the y-axis direction when the ejector is working.

[0010] Furthermore, the number of the sleeve fasteners is not less than 2, and the corresponding sleeve fastener openings are evenly distributed on a circumference with the through hole as the center, so that the sleeve fasteners are evenly stressed when the injector is working.

[0011] Furthermore, the pressure plate has a central groove and side grooves, the central groove clamps the injector, and the pressure plate fastener connects the pressure plate to the sleeve through the side grooves and the sleeve pressure plate openings adapted to the side grooves, and the injector is fixed on both the x-axis and the y-axis.

[0012] Beneficial effects: The injector fixing device in the present application fixes the injector on the test device, the injector has a good fixing effect, and has a good shock absorbing effect through the arrangement of the rubber gasket and the rubber gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the ejector fixing device in this application;

[0014] Figure 2 It is a front cross-sectional view of the sleeve in this application;

[0015] Figure 3 A top view of the sleeve in this application;

[0016] Figure 4 This is a front cross-sectional view of the pressure plate in this application;

[0017] Figure 5 This is a top view of the pressure plate in this application. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described in this application are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. The following is a detailed description of the injector fixing device in this application in combination with the drawings.

[0019] like Figure 1 As shown, an injector fixing device comprises a sleeve 1, a pressing plate 2, a pressing plate fastener 5 and a sleeve fastener 6;

[0020] like Figure 1 and 2 As shown, the sleeve 1 includes a concave bottom cover 11 and a supporting portion 13. The inner side of the concave bottom cover 11 has a through hole 12 for penetrating and fixing the injector nozzle 31. The outer side of the concave bottom cover 11 is snapped into the opening of the bomb container matrix 4. The supporting portion 13 connected to the concave bottom cover 11 is connected to the bomb container matrix 4 through a sleeve fastener 6, so that the sleeve 1 is fixed on the bomb container matrix 4.

[0021] like Figure 1 As shown, the pressing plate 2 is clamped on the injector 3, and the pressing plate 2 is connected to the sleeve 1 through the pressing plate fastener 5, so that the injector 3 is fixed in both the x-axis and the y-axis.

[0022] like Figure 2 As shown, the through hole 12 is located at the center of the concave bottom cover 11, and the shape of the through hole 12 is adapted to the shape of the injector nozzle 31, so that the injector nozzle 31 is fixed and centered.

[0023] like Figure 1 As shown, there is a rubber gasket 8 between the through hole 12 and the injector nozzle 31 to attenuate the vibration generated along the y-axis direction when the injector 3 is working.

[0024] like Figure 1 As shown, a rubber gasket 7 is provided between the supporting portion 13 of the sleeve 1 and the bullet-containing matrix 4 to attenuate the vibration generated along the y-axis direction when the ejector 3 is working.

[0025] like Figure 1-3 As shown, the number of sleeve fasteners 6 is not less than 2, and the corresponding sleeve fastener openings 16 are evenly distributed on the circumference with the through hole 12 as the center. When the injector 3 is working, the sleeve fastener 6 is evenly stressed and has a good fastening effect. In the embodiment, the sleeve fastener 6 is a nut and a bolt.

[0026] like Figure 1 , 4 As shown in FIG. 5 , the pressure plate 2 has a central groove 21 and a side groove 25, the central groove 21 clamps the injector 3, and the pressure plate fastener 5 connects the pressure plate 2 with the sleeve 1 through the side groove 25 and the sleeve pressure plate opening 15 adapted to the side groove 25, and the injector 3 is fixed in both the x-axis and the y-axis. In the embodiment, the pressure plate fastener 5 is a nut and a stud.

[0027] The injector fixing device in the present application is used to fix the injector for impulse method testing, has good fixing effect and good shock absorption effect.

Claims

1. An injector fixing device, characterized in that: It comprises a sleeve (1), a pressing plate (2), a pressing plate fastener (5) and a sleeve fastener (6); The sleeve (1) comprises a concave bottom cover (11) and a supporting portion (13); the inner side of the concave bottom cover (11) is provided with a through hole (12) for penetrating and fixing the injector nozzle (31); the outer side of the concave bottom cover (11) is snapped into the opening of the bullet-containing matrix (4); the supporting portion (13) connected to the concave bottom cover (11) is connected to the bullet-containing matrix (4) via a sleeve fastener (6), so that the sleeve (1) is fixed to the bullet-containing matrix (4); The pressure plate (2) is clamped on the injector (3) and connected to the sleeve (1) via a pressure plate fastener (5), so that the injector (3) is fixed on both the x-axis and the y-axis.

2. The injector fixing device according to claim 1, characterized in that: The through hole (12) is located at the center of the concave bottom cover (11); the shape of the through hole (12) matches the shape of the injector nozzle (31), so that the injector nozzle (31) is fixed and centered.

3. The injector fixing device according to claim 1, characterized in that: A rubber gasket (8) is provided between the through hole (12) and the injector nozzle (31) to attenuate vibrations generated along the y-axis direction when the injector (3) is in operation.

4. The injector fixing device according to claim 1, characterized in that: A rubber gasket (7) is provided between the support portion (13) of the sleeve (1) and the bullet-containing matrix (4) to attenuate vibrations generated along the y-axis direction when the ejector (3) is in operation.

5. The injector fixing device according to claim 1, characterized in that: The number of the sleeve fasteners (6) is not less than 2, and the corresponding sleeve fastener openings (16) are evenly distributed on a circumference with the through hole (12) as the center, so that the sleeve fasteners (6) are evenly stressed when the injector (3) is working.

6. The injector fixing device according to claim 1, characterized in that: The pressure plate (2) has a central groove (21) and a side groove (25), the central groove (21) clamps the injector (3), the pressure plate fastener (5) connects the pressure plate (2) to the sleeve (1) through the side groove (25) and the sleeve pressure plate opening (15) adapted to the side groove (25), and the injector (3) is fixed on both the x-axis and the y-axis.

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