Oil nozzle testing tool

Abstract

The utility model provides an oil nozzle test tool, which relates to the technical field of product test equipment and comprises a base and a first test unit arranged on the base. The first test unit comprises a first support, a first cylinder, a second cylinder, a first oil collector and a high-pressure connecting rod; a positioning structure is arranged on the first support and is used for placing a to-be-tested oil nozzle; a cylinder body of the first cylinder is mounted on the first support, and a piston rod of the first cylinder is connected with the first oil collector and can drive the first oil collector to be butted with the to-be-tested oil nozzle so as to collect oil sprayed by the oil nozzle; and a cylinder body of the second cylinder is mounted on the base and is used for driving the high-pressure connecting rod to be inserted into the oil inlet of the to-be-tested oil nozzle and enabling the high-pressure connecting rod to tightly press the oil inlet of the to-be-tested oil nozzle. During testing, the air cylinder meeting the pressure requirement can be selected to provide enough pressure so that the high-pressure connecting rod can tightly press the oil inlet of the oil nozzle, and therefore an ultrahigh pressure test can be conveniently carried out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of product testing equipment, and in particular to a fuel nozzle testing tool. BACKGROUND

[0002] The fuel nozzle is an important component of the modern internal combustion engine fuel system, and has an important influence on the engine performance. The fuel nozzle ensures that the engine can obtain the appropriate fuel supply and achieve the best fuel economy and power through fuel atomization, injection and control. The design and injection control strategy of the fuel nozzle is one of the key technologies to improve the engine performance and reduce exhaust emissions. The fuel nozzle needs to use related testing tools when it is tested at the factory, which can be special or customized tools, but the market usually uses universal tools. Different types of products need to use different testing tools to detect oil volume. The current common tool adopts manual installation, and the product oil inlet and the ejector rod are connected by screw fastening. The installation time is long, the work efficiency is low, and the personnel are prone to fatigue due to long-term mechanical disassembly. In addition, the testing tool needs to be manually selected by personnel, which may result in incorrect selection of the tool, and the tool has no foolproof device, which may cause damage to the product oil inlet during installation, resulting in product failure. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the present application is to provide a fuel nozzle testing tool to solve the above problems in the prior art.

[0004] A fuel nozzle testing tool, comprising a base and a first testing unit arranged above the base; the first testing unit comprises a first support, a first cylinder, a second cylinder, a first oil collector and a high-pressure connecting rod; the first support is provided with a positioning structure for placing a fuel nozzle to be tested; the cylinder body of the first cylinder is mounted on the first support, and the piston rod thereof is connected with the first oil collector, which can drive the first oil collector to be connected with the fuel nozzle to be tested to collect the oil sprayed by the fuel nozzle; the cylinder body of the second cylinder is mounted on the base, which is used to drive the high-pressure connecting rod to insert into the oil inlet of the fuel nozzle to be tested and press the oil inlet of the fuel nozzle to be tested.

[0005] Optionally, the positioning structure comprises first and second V-shaped blocks arranged side by side; the first and second V-shaped blocks are fixed on the first support, and the V-shaped grooves on the first and second V-shaped blocks are used to support the fuel nozzle to be tested.

[0006] Optionally, the first and second V-shaped blocks are fixed on the first support in a detachable manner.

[0007] Optionally, the base is provided with a support seat and a support block; the support block is placed on the base in a non-fixed manner and its position on the base is adjustable; the support seat is fixed on the base and an axle body is mounted on the support seat; the first support is placed on the support block and the axle body and is supported by the support block and the axle body.

[0008] Optionally, the base is provided with a guide sleeve and an inner sleeve body is mounted in the inner hole of the guide sleeve and the inner sleeve body can slide along the inner hole of the guide sleeve; the high-pressure connecting rod is mounted on the inner sleeve body so that the inner sleeve body pushes the high-pressure connecting rod to act under the drive of the second cylinder.

[0009] Optionally, a transition body is further arranged inside the guide sleeve; the transition body is located between the second cylinder and the inner sleeve body and the second cylinder can drive the inner sleeve body to act through the transition body.

[0010] The transition body and the guide sleeve are provided with notches at corresponding positions for pipeline connecting members to pass through to connect the high-pressure connecting rod in the inner sleeve body.

[0011] Optionally, the oil nozzle testing tool further comprises a second testing unit.

[0012] The second testing unit comprises a second support, a third cylinder, a second oil collector and a mounting component; the second support is fixed on the base; the third cylinder is mounted on the second support and its piston rod is connected with the second oil collector so as to drive the second oil collector to be connected with the oil nozzle to be tested to collect the oil sprayed by the oil nozzle; and the mounting component is used to mount the oil nozzle to be tested on the base.

[0013] Optionally, the base comprises a bottom plate, an upper plate and a support column; the upper plate is located above the bottom plate and the support column is vertically connected between the bottom plate and the upper plate.

[0014] The first support is arranged above the bottom plate; the second support is horizontally fixed on the support column; the mounting component is detachably assembled on the upper plate; and the second cylinder is fixed on the upper plate.

[0015] Optionally, the bottom plate and the support column are provided with first reinforcing connecting plates on both sides of the connecting position, and the first reinforcing connecting plates are respectively welded with the bottom plate and the support column.

[0016] The upper plate and the support column are provided with second reinforcing connecting plates on both sides of the connecting position, and the second reinforcing connecting plates are respectively welded with the upper plate and the support column.

[0017] Optionally, the second testing unit is configured with a plurality of mounting components of different specifications to correspondingly mount oil injectors of different specifications.

[0018] In the present application, the first testing unit is provided with a first cylinder and a second cylinder, wherein the first cylinder is capable of driving the first oil collector to be connected with the oil injector to be tested to collect the oil sprayed by the oil injector, and the second cylinder is used to drive the high-pressure connecting rod to be inserted into the oil inlet of the oil injector to be tested and to press the high-pressure connecting rod against the oil inlet of the oil injector to be tested. On the one hand, during testing, the cylinder meeting the pressure requirement can be selected to provide sufficient pressure to press the high-pressure connecting rod against the oil inlet of the oil injector, so as to perform the ultrahigh pressure test; and on the other hand, during installation, the connection between the oil inlet of the oil injector and the high-pressure connecting rod can be directly observed, so as to facilitate the observation during testing and reduce the defective rate of the product. On the other hand, the oil injector testing tool provided by the present application is simple to operate during testing and can effectively reduce the labor intensity of the operator.

[0019] In some technical solutions, the oil injector testing tool is further provided with a second testing unit, which can select the station according to different products and is simple to operate, so as to effectively improve the production efficiency and save the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic diagram of the oil injector testing tool in the first embodiment of the present application.

[0021] Figure 2 FIG. 2 is a partial structural schematic diagram of the oil injector testing tool in the first embodiment of the present application.

[0022] Figure 3 FIG. 3 is a partial structural schematic diagram of the oil injector testing tool in the first embodiment of the present application.

[0023] Figure 4 FIG. 4 is a partial structural schematic diagram of the oil injector testing tool in the first embodiment of the present application.

[0024] Figure 5 FIG. 5 is a structural schematic diagram of the oil injector testing tool in the second embodiment of the present application.

[0025] Figure 6 FIG. 6 is a structural schematic diagram of the base.

[0026] The reference signs are: base 10, bottom plate 11, upper plate 12, support column 13, first reinforcing connecting plate 14, second reinforcing connecting plate 15, first test unit 20, first support 21, first cylinder 22, second cylinder 23, first oil collector 24, high-pressure connecting rod 25, positioning structure 26, first V-shaped block 261, second V-shaped block 262, support seat 27, shaft body 271, support block 28, guide sleeve 29, inner sleeve body 210, transition body 211, notch 212, pipeline connecting piece 213, second test unit 30, second support 31, third cylinder 32, second oil collector 33. DETAILED DESCRIPTION

[0027] The following is a specific embodiment of the present application and in conjunction with the drawings, the technical solutions of the present application are further described, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help understand the embodiments of the present application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope of protection of the present application. In addition, in order to be clear and concise, the description of known functions and structures is omitted.

[0028] It should be noted that the embodiments and features in the embodiments can be combined with each other without conflict.

[0029] The present application provides a fuel nozzle test tool, which can be applied to the factory test of the fuel nozzle. The fuel nozzle test tool provided by the present application can effectively reduce the labor intensity of the operator when testing. The fuel nozzle test tool comprises a base and a first test unit arranged on the base. In some embodiments, the fuel nozzle test tool further comprises a second test unit, which can select a station according to different products and is simple to operate, which can effectively improve the production efficiency and save the production cost.

[0030] Reference Figure 1 In the first embodiment, the fuel nozzle test tool comprises a base 10 and a first test unit 20 arranged on the base 10. The first test unit 20 comprises a first support 21, a first cylinder 22, a second cylinder 23, a first oil collector 24, and a high-pressure connecting rod 25. The first support 21 is provided with a positioning structure 26 for placing a fuel nozzle to be tested. The cylinder body of the first cylinder 22 is installed on the first support 21, and the piston rod thereof is connected with the first oil collector 24, which can drive the first oil collector 24 to be connected with the fuel nozzle to be tested to collect the oil sprayed by the fuel nozzle. The cylinder body of the second cylinder 23 is installed on the base 10, which is used to drive the high-pressure connecting rod 25 to be inserted into the oil inlet of the fuel nozzle to be tested and make the high-pressure connecting rod 25 press the oil inlet of the fuel nozzle to be tested.

[0031] When the first test unit 20 is used to test the fuel injector, the fuel injector W to be tested is first placed on the positioning structure 26, then the second cylinder 23 drives the high-pressure connecting rod 25 to insert into the oil inlet of the fuel injector to be tested and press the high-pressure connecting rod 25 against the oil inlet of the fuel injector to be tested, and the first cylinder 22 drives the first oil collector 24 to be connected with the fuel injector to be tested to collect the oil sprayed by the fuel injector. During the test, the high-pressure connecting rod 25 is connected to the external oil pipe, the oil in the external oil pipe is input into the fuel injector through the oil inlet of the fuel injector, and is sprayed out of the oil outlet of the fuel injector, and the first oil collector collects the oil sprayed by the fuel injector. The first oil collector is provided with two oil holes, one of which is used to connect the oil return pipe of the equipment, and the other is used to collect the oil sprayed by the fuel injector during the test.

[0032] The first test unit 20 can be used to perform super-high pressure test, and the high-pressure connecting rod 25 is connected to the high-pressure oil pipe, and the test pressure can reach 1600-2000 Bar. During the test, the pressure provided by the cylinder meeting the pressure requirement can be selected to press the high-pressure connecting rod against the oil inlet of the fuel injector, so as to perform the super-high pressure test; and the connection between the oil inlet of the fuel injector and the high-pressure connecting rod can be directly observed during the installation, which facilitates the observation during the test and reduces the defective rate of the product.

[0033] Reference Figure 2 , Figure 2 The first support 21, the first cylinder 22, the first oil collector 24 and the positioning structure 26 are shown. The positioning structure 26 includes the first V-shaped block 261 and the second V-shaped block 262 arranged side by side. The first V-shaped block 261 and the second V-shaped block 262 are both fixed on the first support 21, and the V-shaped grooves on the first V-shaped block 261 and the second V-shaped block 262 are used to support the fuel injector to be tested. When the fuel injector W to be tested is placed on the first V-shaped block 261 and the second V-shaped block 262, the V-shaped grooves on the first V-shaped block 261 and the second V-shaped block 262 can automatically position the fuel injector to be tested, thereby facilitating the subsequent test. Further, the first V-shaped block 261 and the second V-shaped block 262 are both detachably fixed on the first support 21, so that different sizes of V-shaped blocks can be replaced as needed. Further, the first V-shaped block 261 and the second V-shaped block 262 are fixed on the first support 21 by bolts.

[0034] Reference Figure 1In an embodiment of the present application, the base 10 is provided with a support seat 27 and a support block 28; the support block 28 is placed on the base 10 in a non-fixed manner and its position on the base 10 is adjustable; the support seat 27 is fixed on the base 10 and an axle body 271 is mounted thereon; the first support seat 21 is placed on the support block 28 and the axle body 271 and is supported by the support block 28 and the axle body 271. In this design, the first support seat 21 is supported by the support block 28 and the axle body 271, and since the position of the support block 28 on the base 10 is adjustable and no fixed connection is provided, the position and angle of the first support seat 21 can be adjusted by adjusting the position and orientation of the support block 28 and replacing the support block 28 of different sizes to adapt to the test positioning of different oil nozzles.

[0035] With reference to Figure 3 and Figure 4 , the base 10 is provided with a guide sleeve 29, and an inner sleeve body 210 is mounted in the inner hole of the guide sleeve 29 and can slide along the inner hole of the guide sleeve 29; the high-pressure connecting rod 25 is installed on the inner sleeve body 210, so that under the drive of the second cylinder 23, the inner sleeve body 210 pushes the high-pressure connecting rod 25 to act. The inner sleeve body 210 is used to install the high-pressure connecting rod 25, and the guide sleeve 29 is used to guide the movement of the inner sleeve body 210. When the second cylinder 23 drives the inner sleeve body 210 to move in the guide sleeve 29, the high-pressure connecting rod 25 also acts with the inner sleeve body 210, so as to realize the driving of the high-pressure connecting rod inserted into the oil inlet of the oil nozzle to be tested and the pressing of the high-pressure connecting rod to the oil inlet of the oil nozzle to be tested, so as to perform the super-high pressure test.

[0036] The second cylinder 23 is used to drive the inner sleeve body 210 to act, and in a technical solution, a transition body 211 is further provided inside the guide sleeve 29; the transition body 211 is located between the second cylinder 23 and the inner sleeve body 210, and the second cylinder 23 can drive the inner sleeve body 210 to act through the transition body 211. The transition body 211 and the guide sleeve 29 are provided with notches 212 at corresponding positions, and a pipeline connecting piece 213 passes through the notches 212 to connect the high-pressure connecting rod 25 located in the inner sleeve body 210. When the second cylinder 23 drives the inner sleeve body 210, the transition body 211 and the high-pressure connecting rod 25 to move in the guide sleeve 29, the pipeline connecting piece 213 connected with the high-pressure connecting rod 25 also moves synchronously. The pipeline connecting piece 213 passes through the notches 212 of the transition body 211 and the guide sleeve 29 from the outside to the inside of the guide sleeve 29 to be connected with the high-pressure connecting rod 25, and the pipeline connecting piece 213 moves within the range of the notches 212.

[0037] The oil nozzle test tool provided by the embodiment comprises a first test unit, and during testing, sufficient pressure can be provided by selecting a cylinder meeting the pressure requirement to press the oil inlet of the high-pressure connecting rod against the oil nozzle, so as to perform ultrahigh-pressure testing; and during installation, the connection between the oil inlet of the oil nozzle and the high-pressure connecting rod can be directly observed, so that observation during testing is facilitated, and the defective rate of products is reduced.

[0038] Reference Figure 5 In the second embodiment, the oil nozzle test tool comprises the first test unit 20 and further comprises a second test unit 30. The second test unit 30 comprises a second support 31, a third cylinder 32, a second oil collector 33, and a mounting component. The second support 31 is fixed to the base 10. The third cylinder 32 is installed on the second support 31, and the piston rod thereof is connected with the second oil collector 33, so that the second oil collector 33 can be driven to be connected with the oil nozzle to be tested to collect the oil sprayed by the oil nozzle. The mounting component is used to mount the oil nozzle to be tested on the base 10. Further, the second test unit 30 is provided with mounting components of different specifications to correspondingly mount oil nozzles of different specifications. Different from the first embodiment, the second test unit 30 is arranged on the base 10 on the basis of the first test unit 20, and the work station can be selected according to different products, the operation is simple, and the production efficiency can be effectively improved and the production cost can be saved.

[0039] During testing by using the second test unit, the oil nozzle to be tested is connected to an external oil pipe, the oil in the external oil pipe is input into the oil nozzle through the oil inlet of the oil nozzle, and is sprayed out of the oil nozzle through the oil outlet of the oil nozzle, and the second oil collector collects the oil sprayed by the oil nozzle. Two oil holes are arranged on the second oil collector, one of which is used to connect with the oil return pipe of the equipment, and the other of which is used to collect the oil sprayed by the oil nozzle during testing. Different from the first test unit, the second test unit is not provided with the high-pressure connecting rod driven by the second cylinder.

[0040] Reference Figure 6 In a specific embodiment, the base 10 comprises a bottom plate 11, an upper plate 12, and a support column 13. The upper plate 12 is located above the bottom plate 11, and the support column 13 is vertically connected between the bottom plate 11 and the upper plate 12. Figure 5 The first support 21 is arranged above the bottom plate 11. The second support 31 is horizontally fixed to the support column 13. The mounting component is detachably assembled on the upper plate 12. The second cylinder 23 is fixed to the upper plate 12.

[0041] Further, the bottom plate 11 and the support column 13 are provided with first reinforcing connecting plates 14 at both sides of the connecting position, and the first reinforcing connecting plates 14 are respectively welded to the bottom plate 11 and the support column 13. The upper plate 12 and the support column 13 are provided with second reinforcing connecting plates 15 at both sides of the connecting position, and the second reinforcing connecting plates 15 are respectively welded to the upper plate 12 and the support column 13.

[0042] Thus, the first test unit is provided with the first cylinder and the second cylinder, wherein the first cylinder is capable of driving the first oil collector to be connected with the fuel injection nozzle to be tested to collect the oil sprayed by the fuel injection nozzle, and the second cylinder is used to drive the high-pressure connecting rod to be inserted into the oil inlet of the fuel injection nozzle to be tested and to press the high-pressure connecting rod against the oil inlet of the fuel injection nozzle to be tested. On the one hand, during the test, the cylinder meeting the pressure requirement can be selected to provide sufficient pressure to press the high-pressure connecting rod against the oil inlet of the fuel injection nozzle, so as to perform the ultrahigh pressure test; and on the other hand, during the installation, the connection between the oil inlet of the fuel injection nozzle and the high-pressure connecting rod can be directly observed, so as to facilitate the observation during the test and reduce the defective rate of the product. On the other hand, the fuel injection nozzle test tool provided by the application is simple to operate during the test and can effectively reduce the labor intensity of the operator. In some technical solutions, the fuel injection nozzle test tool is further provided with the second test unit, the workstations can be selected according to different products, the operation is simple, the production efficiency can be effectively improved, and the production cost can be saved.

[0043] In the above embodiments of the application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0044] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise specifically limited. It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, it means that the features, steps, operations, devices, components and / or their combinations are present.

[0045] The specific embodiments described herein are merely illustrative of the technical solutions of the application. Those skilled in the art of the technical field to which the application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them without departing from the scope defined by the claims of the application.

Claims

1. A fuel injector testing fixture, characterized in that, The fuel injector testing fixture includes: a base and a first testing unit arranged on the base; the first testing unit includes a first support, a first cylinder, a second cylinder, a first oil collector, and a high-pressure connecting rod; the first support is provided with a positioning structure for placing the fuel injector to be tested; the cylinder body of the first cylinder is mounted on the first support, and its piston rod is connected to the first oil collector, which can drive the first oil collector to dock with the fuel injector to be tested to collect the oil sprayed by the fuel injector; the cylinder body of the second cylinder is mounted on the base, and it is used to drive the high-pressure connecting rod to insert into the oil inlet of the fuel injector to be tested and to press the high-pressure connecting rod against the oil inlet of the fuel injector to be tested.

2. The fuel injector testing fixture according to claim 1, characterized in that, The positioning structure includes a first V-shaped block and a second V-shaped block arranged side by side; both the first V-shaped block and the second V-shaped block are fixed on the first support, and the V-shaped grooves on the first V-shaped block and the second V-shaped block are used to support the fuel injector to be tested.

3. The fuel injector testing fixture according to claim 2, characterized in that, Both the first V-block and the second V-block are detachably fixed to the first support.

4. The fuel injector testing fixture according to claim 1, characterized in that, The base is provided with a support seat and a support block; the support block is placed on the base in a non-fixed manner and its position on the base is adjustable; the support seat is fixed on the base and a shaft is mounted on it; the first support is placed on the support block and the shaft and is supported by the support block and the shaft together.

5. The fuel injector testing fixture according to claim 1, characterized in that, The base is provided with a guide sleeve, and an inner sleeve body is installed in the inner hole of the guide sleeve, and the inner sleeve body can slide along the inner hole of the guide sleeve; the high-pressure connecting rod is installed on the inner sleeve body, so that under the drive of the second cylinder, the inner sleeve body pushes the high-pressure connecting rod to move.

6. The fuel injector testing fixture according to claim 5, characterized in that, A transition body is also provided inside the guide sleeve; the transition body is located between the second cylinder and the inner sleeve, and the second cylinder can drive the inner sleeve to move through the transition body; The transition body and the guide sleeve are provided with notches at corresponding positions for the pipeline connector to pass through to connect to the high-pressure connecting rod located in the inner sleeve.

7. The fuel injector testing fixture according to any one of claims 1-6, characterized in that, The fuel injector testing fixture also includes a second testing unit; The second test unit includes a second support, a third cylinder, a second oil collector, and a mounting component; the second support is fixed on the base; the third cylinder is mounted on the second support, and its piston rod is connected to the second oil collector, which can drive the second oil collector to dock with the fuel injector to be tested to collect the oil sprayed from the fuel injector; the mounting component is used to mount the fuel injector to be tested on the base.

8. The fuel injector testing fixture according to claim 7, characterized in that, The base includes: a base plate, a top plate, and a support column; the top plate is located above the base plate, and the support column is vertically connected between the base plate and the top plate; The first support is arranged on the base plate; the second support is horizontally fixed on the column; the mounting component is detachably assembled on the upper plate; and the second cylinder is fixed on the upper plate.

9. The fuel injector testing fixture according to claim 8, characterized in that, The base plate and the support column are provided with first reinforcing connecting plates on both sides of the connection position, and the first reinforcing connecting plates are welded to the base plate and the support column respectively; The upper plate and the support column are provided with second reinforcing connecting plates on both sides of the connection position, and the second reinforcing connecting plates are welded to the upper plate and the support column respectively.

10. The fuel injector testing fixture according to claim 7, characterized in that, The second test unit is equipped with multiple mounting components of different specifications to accommodate different sizes of fuel injectors.

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