Tool for measuring air tightness of crankcase

Abstract

The utility model belongs to the technical field of crankcase air tightness testing, and discloses a tool for measuring the air tightness of a crankcase, which comprises a tool base provided with a profiling testboard; four stand columns are further arranged on the tool base, a movable plate is arranged on the stand columns in a sliding mode, a top plate is arranged at the tops of the stand columns, a lifting air cylinder is arranged at the top of the top plate, and a piston of the lifting air cylinder penetrates through the movable plate and is fixedly connected with the top of the movable plate; a movable plate is arranged on the tool base, a profiling test plate is arranged on the movable plate, airtight cylinders are arranged on the profiling test plate, the movable plate and the tool base, and the arrangement positions and orientations of the airtight cylinders correspond to those of through holes in a crankcase; pistons of all the airtight air cylinders are provided with sealing plates matched with a through opening of a crankcase, and any sealing plate is provided with an airtight nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of crankcase air tightness testing, and more specifically to a tool for measuring the air tightness of a crankcase. Background Art

[0002] The crankcase is an important component in the engine. It not only supports the crankshaft, but also provides lubrication and sealing for the engine. The airtightness of the crankcase is directly related to the working performance and life of the engine. Therefore, it is very important to ensure the airtightness of the crankcase.

[0003] During the engine production and maintenance process, air tightness testing of the crankcase is a routine quality control measure; to meet this requirement, special tooling needs to be made to seal its surface to ensure that the interior meets the air tightness test requirements.

[0004] To this end, the present application proposes a tool for measuring the air tightness of a crankcase, so as to be used for testing the air tightness of the crankcase. Utility Model Content

[0005] In order to solve the above problems, the present application provides a tool for measuring the air tightness of a crankcase.

[0006] The present application provides a tool for measuring crankcase air tightness using the following technical solution:

[0007] A tool for measuring the air tightness of a crankcase, comprising:

[0008] A tooling base, on which a profiling test bench is arranged;

[0009] Four columns are also provided on the tooling base, and movable plates are slidably provided on the columns. A top plate is provided on the top of the columns, and a lifting cylinder is provided on the top of the top plate. The piston of the lifting cylinder passes through the movable plate and is fixedly connected to the top of the movable plate.

[0010] The movable plate is provided with a profiling test plate, and the profiling test plate, the movable plate and the tooling base are all provided with an airtight cylinder, and the setting position and orientation of the airtight cylinder correspond to the through-opening on the crankcase;

[0011] The pistons of all the airtight cylinders are provided with sealing plates matching the crankcase through-ports, and any of the sealing plates is provided with an airtight nozzle.

[0012] Furthermore, an inverted T-shaped connecting rod is provided through the movable plate, the connecting rod extends toward the bottom, and the connecting rod is located in the upper and lower directions of the movable plate and is threadedly connected with nuts; a sliding member is slidably connected to the connecting rod, and the bottom of the sliding member is fixedly connected to the contour test plate; a spring is also sleeved on the connecting rod, and the top of the spring fits the nut located at the bottom of the movable plate, and the bottom of the spring fits the top of the sliding member.

[0013] Through the above technical solution, the threaded connection can fine-tune the position of the connecting rod to ensure the precise alignment of the contoured test plate and the crankcase; the design of the sliding part and the spring provides an elastic support that automatically adapts to the slight unevenness of the crankcase surface and improves the sealing effect.

[0014] Furthermore, the connecting rods are arranged in two rows, and the number of the connecting rods in each row is at least four.

[0015] Through the above technical solution, the arrangement of two rows of connecting rods increases the stability and supporting force of the tooling, ensuring that the crankcase will not be displaced during the clamping process.

[0016] Furthermore, the spring is a flat spring.

[0017] Through the above technical solution, the use of the flat spring provides a uniform elastic force, which helps to achieve better sealing effect and adaptability.

[0018] Furthermore, the profiling test bench, the profiling test plate, the sealing plate and the airtight nozzle are all provided with sealing gaskets matching the crankcase through-hole.

[0019] Through the above technical solution, the setting of sealing gaskets at various key locations provides additional sealing protection, ensuring the accuracy and reliability of the airtightness test.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] (1) This tooling realizes automatic compression of the crankcase through the design of automated lifting cylinder and movable plate, reduces manual operation, and improves the accuracy and efficiency of the test;

[0022] (2) Through the design of the inverted T-shaped connecting rod, sliding parts, springs and gaskets, the tooling can adapt to crankcases of different sizes and shapes while ensuring stability and sealing during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of this application;

[0024] Figure 2 for Figure 1The enlarged schematic diagram of point A in the middle;

[0025] Figure 3 This is a schematic diagram of the working status of this application.

[0026] Explanation of the numbers in the figure: 1. tooling base; 2. profiling test bench; 3. column; 4. movable plate; 5. top plate; 6. lifting cylinder; 7. profiling test plate; 8. airtight cylinder; 9. sealing plate; 10. airtight nozzle; 11. connecting rod; 12. sliding part; 13. spring; 14. sealing gasket. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0028] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] Example:

[0031] The following is combined with Figure 1 -3 Provide further details of this application.

[0032] The embodiment of the present application discloses a tool for measuring the air tightness of a crankcase, comprising:

[0033] A tooling base 1, on which a profiling test bench 2 is arranged;

[0034] Four columns 3 are also provided on the tooling base 1, and movable plates 4 are slidably provided on the columns 3. A top plate 5 is provided on the top of the columns 3, and a lifting cylinder 6 is provided on the top of the top plate 5. The piston of the lifting cylinder 6 penetrates the movable plate 4 and is fixedly connected to the top of the movable plate 4.

[0035] A profiling test plate 7 is provided on the movable plate 4, and an airtight cylinder 8 is provided on the profiling test plate 7, the movable plate 4 and the tooling base 1, and the setting position and orientation of the airtight cylinder 8 correspond to the through-opening on the crankcase;

[0036] A sealing plate 9 matching the crankcase through-port is provided on the piston of each of the airtight cylinders 8 , and an airtight nozzle 10 is provided on any sealing plate 9 .

[0037] See also Figure 1 and Figure 2 An inverted T-shaped connecting rod 11 is provided on the movable plate 4, and the connecting rod 11 extends to the bottom. The connecting rod 11 is located in the upper and lower directions of the movable plate 4 and is threadedly connected with nuts; a sliding member 12 is slidably connected to the connecting rod 11, and the bottom of the sliding member 12 is fixedly connected to the profiling test plate 7; a spring 13 is also sleeved on the connecting rod 11, and the top of the spring 13 fits the nut located at the bottom of the movable plate 4, and the bottom of the spring 13 fits the top of the sliding member 12; the threaded connection can fine-tune the position of the connecting rod 11 to ensure the precise alignment of the profiling test plate 7 with the crankcase; the design of the sliding member 12 and the spring 13 provides an elastic support, which automatically adapts to the slight unevenness of the crankcase surface and improves the sealing effect.

[0038] See also Figure 1 and Figure 2 There are two rows of connecting rods 11, and the number of connecting rods 11 in each row is at least four; the arrangement of two rows of connecting rods 11 increases the stability and supporting force of the tooling, ensuring that the crankcase will not be displaced during the clamping process.

[0039] See also Figure 1 and Figure 2 The type of spring 13 is a flat spring, and the use of the flat spring provides a uniform elastic force, which helps to achieve better sealing effect and adaptability.

[0040] See also Figure 1 The profiling test bench 2, the profiling test plate 7, the sealing plate 9 and the airtight nozzle 10 are all provided with sealing gaskets 14 that match the crankcase through-hole. The setting of the sealing gaskets 14 at various key positions provides additional sealing protection to ensure the accuracy and reliability of the airtightness test.

[0041] The implementation principle of a tool for measuring crankcase air tightness in the embodiment of the present application is as follows:

[0042] Before use, adjust the threaded nut on the inverted T-shaped connecting rod 11 and fine-tune the position of the profiling test plate 7 to ensure accurate alignment with the crankcase.

[0043] When in use, the crankcase is placed on the profiling test table 2 of the tooling base 1; the lifting cylinder 6 is started to lower the movable plate 4, and the profiling test plate 7 contacts the surface of the crankcase; the sliding member 12 and the elastic support of the spring 13 are used to automatically adapt to the slight unevenness of the crankcase surface to ensure sealing.

[0044] Start the airtight cylinder 8 to make the sealing plate 9 fit tightly with the crankcase through-hole, and perform an airtightness test through the airtight nozzle 10.

[0045] The air tightness test result is used to determine whether the sealing performance of the crankcase meets the standard; after the test is completed, the lifting cylinder 6 controls the movable plate 4 to lift up and release the crankcase; the crankcase that has been tested is taken out to prepare for the next test.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tool for measuring crankcase air tightness, characterized in that: include: A tool base (1), wherein a profiling test bench (2) is arranged on the tool base (1); Four columns (3) are also provided on the tooling base (1), and a movable plate (4) is slidably provided on the columns (3). A top plate (5) is provided on the top of the columns (3), and a lifting cylinder (6) is provided on the top of the top plate (5). The piston of the lifting cylinder (6) passes through the movable plate (4) and is fixedly connected to the top of the movable plate (4); The movable plate (4) is provided with a profiling test plate (7), and the profiling test plate (7), the movable plate (4) and the tooling base (1) are all provided with an airtight cylinder (8), and the setting position and orientation of the airtight cylinder (8) correspond to the through-opening on the crankcase; The pistons of all the airtight cylinders (8) are provided with sealing plates (9) matching the crankcase through-holes, and any of the sealing plates (9) is provided with an airtight nozzle (10).

2. The tool for measuring crankcase air tightness according to claim 1, characterized in that: An inverted T-shaped connecting rod (11) is provided through the movable plate (4), the connecting rod (11) extends toward the bottom, and the connecting rod (11) is threadedly connected with nuts in the upper and lower directions of the movable plate (4); a sliding member (12) is slidably connected to the connecting rod (11), and the bottom of the sliding member (12) is fixedly connected to the profiling test plate (7); a spring (13) is also sleeved on the connecting rod (11), and the top of the spring (13) fits the nut located at the bottom of the movable plate (4), and the bottom of the spring (13) fits the top of the sliding member (12).

3. A tool for measuring crankcase air tightness according to claim 2, characterized in that: The connecting rods (11) are arranged in two rows, and the number of the connecting rods (11) in each row is at least four.

4. The tool for measuring crankcase air tightness according to claim 2, characterized in that: The spring (13) is of the flat spring type.

5. The tool for measuring crankcase air tightness according to claim 1, characterized in that: The profiling test bench (2), the profiling test plate (7), the sealing plate (9) and the airtight nozzle (10) are all provided with sealing gaskets (14) matching the crankcase through-hole.

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