Air tightness detection equipment for engine cylinder cover

Abstract

The utility model discloses an air tightness detection device used for an engine cylinder cover, comprising a support weldment which is movably connected with a mobile platform for bearing the engine cylinder cover and a pressing platform used in cooperation with the mobile platform. The moving platform comprises a transverse translation module, a bearing plate connected to the transverse translation module and a bottom oil hole plugging device, an arc-shaped groove is formed in the side wall of the bearing plate, and the bottom oil hole plugging device is provided with a guide rod matched with the arc-shaped groove for use; the guide rod penetrates through the arc-shaped groove and fixes the bottom oil hole plugging device and the bearing plate through a bolt, and the detection equipment can be suitable for air tightness detection of engine cylinder bodies of various models and is high in adaptability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine cylinder cover application, specifically related to a kind of air tightness detection equipment for engine cylinder cover. BACKGROUND

[0002] Engine cylinder cover, also known as cylinder cover, is an important component of engine, which is located at the top of engine cylinder block, and forms combustion chamber with cylinder block, and the main function of cylinder cover is to seal cylinder, withstand high temperature and high pressure gas generated in combustion process, and provide installation basis for valve train and valve actuating mechanism.

[0003] Due to the difference of engine displacement, different specifications of cylinder bore exist, which brings challenges to the traditional engine cylinder cover detection method. Traditionally, the detection method is to insert the detection head directly into the cylinder block and fill the cylinder cover with air to detect its sealing performance. However, since the size of the existing detection head is fixed, it cannot adapt to different caliber and different size of cylinder, which limits the universality of the detection head in the detection of various specifications of engine cylinder cover. Therefore, a kind of air tightness detection equipment for engine cylinder cover is proposed to solve the above problems. SUMMARY

[0004] To solve the above technical problems, the utility model provides an air tightness detection equipment for engine cylinder cover, which can be applied to the air tightness detection of various types of engine cylinder block, and has strong adaptability.

[0005] The technical scheme of the utility model is: an air tightness detection equipment for engine cylinder cover, comprising a support welding part, a mobile platform for carrying engine cylinder cover is movably connected to the support welding part, and a pressing platform is used in cooperation with the mobile platform;

[0006] The mobile platform comprises a horizontal translation module, a carrying plate connected to the horizontal translation module and a bottom oil hole plugging device, the side wall of the carrying plate is provided with an arc-shaped groove, the bottom oil hole plugging device is provided with a guide rod matched with the arc-shaped groove, the guide rod passes through the arc-shaped groove and fixes the bottom oil hole plugging device and the carrying plate by bolts.

[0007] Further, the bottom oil hole plugging device is provided with multiple groups.

[0008] Further, the bottom oil hole plugging device comprises a lifting pneumatic element and an upper pressing plug connected to the telescopic end of the lifting pneumatic element, and the lifting pneumatic element is connected to the carrying plate through the guide rod.

[0009] Further, the lateral translation module comprises a slide rail assembly connected to the bearing plate and a driving cylinder for driving the bearing plate to move, and the side wall of the bearing plate is provided with a connecting block connected to the telescopic end of the driving cylinder.

[0010] Further, the slide rail assembly is provided with a limiting block at opposite ends.

[0011] Further, the moving platform further comprises a lower fixed block bearing the lateral translation module and an upper fixed block bearing the engine cylinder body, the lower fixed block and the upper fixed block are fixed through a support rod, and the end of the upper fixed block is provided with a plurality of positioning columns matched with the engine cylinder cover.

[0012] Further, the bottom of the lower fixed block is provided with a bottom plate connected to the support weld through a vertical translation module.

[0013] One side of the bottom plate is provided with a limiting groove, and the support weld is provided with a limiting cylinder, and the telescopic end of the limiting cylinder is provided with a limiting rod matched with the limiting groove.

[0014] Further, the lower pressing platform comprises a lower pressing plate and an upper sealing device detachably connected to the lower pressing plate.

[0015] The upper sealing device comprises an upper sealing plate and a side wall oil hole plugging device connected to the sealing plate.

[0016] Further, the lower pressing plate is connected to the support weld through a stand, and the end of the stand is connected to a lower pressing cylinder through a top support block, and the telescopic end of the lower pressing cylinder is connected to the lower pressing plate through the top support block to drive the lower pressing plate to move linearly along the height direction of the stand.

[0017] Further, the opposite sides of the lower pressing plate are provided with two side wall sealing devices, one of which is provided with a first air port, and the other is provided with a second air port, and the first air port, the second air port and the air tightness detection device are matched with each other to detect the sealing property of the engine cylinder cover.

[0018] The beneficial technical effects of the utility model are:

[0019] 1. The bottom oil hole plugging device is connected to the bearing plate through a guide rod, and the position of the bottom oil hole plugging device is adjusted by adjusting the position of the guide rod relative to the arc-shaped groove, thereby being suitable for oil hole plugging of engine cylinder covers of different models.

[0020] Further, the lateral translation module can drive the bottom oil hole plugging device to move linearly, and the position of the bottom oil hole plugging device is adjusted to be suitable for sealing property detection of engine cylinder covers of different sizes.

[0021] 2. The cooperation of the limiting groove and the limiting rod ensures the accuracy of the mobile platform reaching the specified position, and also ensures that the position of the mobile platform does not deviate when the lower pressing platform cooperates with the mobile platform to detect the air tightness of the engine cylinder cover.

[0022] 3. The upper sealing device is detachably connected with the lower pressing plate, which facilitates personnel to replace the sealing device according to different engine models, and has strong adaptability.

[0023] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, the following is the preferred embodiment of the present application and the detailed description of the drawings as follows. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is a schematic diagram of the overall structure of the present application;

[0025] Fig. 2 It is a schematic diagram of the structure of the mobile platform of the present application;

[0026] Fig. 3 It is a schematic diagram of the structure of the lower pressing platform of the present application.

[0027] The reference signs are:

[0028] 100, support welding part; 110, vertical translation module; 200, mobile platform; 210, bottom plate; 220, lower fixed block; 230, horizontal translation module; 231, arc-shaped groove; 240, bearing plate; 250, lifting pneumatic element; 251, upper pressing plug; 252, guide rod; 260, upper fixed block; 261, opening; 262, positioning column; 270, support rod; 280, driving cylinder; 281, connecting block; 290, limiting cylinder; 291, limiting rod; 300, lower pressing platform; 310, lower pressing plate; 311, guide block; 320, upper sealing plate; 330, side wall oil hole plugging device; 340, side wall sealing device; 400, stand column; 500, top support block; 600, lower pressing cylinder. DETAILED DESCRIPTION

[0029] In order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, the following embodiment, combined with the drawings and examples, the specific embodiment of the present application is further described in detail, the following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the description of the present application and the claims and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the embodiment and the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] As shown in Figs. 1-3 The utility model relates to a kind of air tightness detection equipment for engine cylinder cover, including support weldment 100, the mobile platform 200 of supporting engine cylinder cover is movably connected on the support weldment 100, and the lower pressing platform 300 used in cooperation with the mobile platform 200 is used;

[0033] The mobile platform 200 includes transverse translation module 230, load-bearing plate 240 connected to the transverse translation module 230 and bottom oil hole plugging device, the side wall of the load-bearing plate 240 is provided with arc groove 231, the bottom oil hole plugging device is provided with guide rod 252 used in cooperation with arc groove 231, the guide rod 252 passes through arc groove 231 and is fixed with bottom oil hole plugging device and load-bearing plate 240 by bolt.

[0034] It should be noted that the mobile platform 200 is slidably connected to the support weldment 100 and can linearly move relative to the support weldment 100. When the mobile platform 200 carries the engine cylinder cover and reaches the designated position, the lower pressing platform 300 located directly above the mobile platform 200 moves vertically downward to detect the air tightness of the engine cylinder cover placed on the mobile platform 200.

[0035] The bottom oil hole plugging device is inserted into the arc-shaped groove 231 through the guide rod 252 and fixed with the load-bearing plate 240 by the bolt. When it is necessary to adjust the bottom oil hole plugging device, the personnel only need to loosen the bolt. At this time, the bottom oil hole plugging device moves linearly along the length direction of the arc-shaped groove 231 through the guide rod 252, which can be adapted to different engine models to plug the oil hole at the bottom of the engine cylinder cover.

[0036] In addition, when the oil hole difference between multiple engine models is not too large, the position of the bottom oil hole blocking device is uniformly adjusted through the transverse linear module, so as to quickly block the oil hole.

[0037] The bottom oil hole blocking device is provided in multiple groups, and each group of the bottom oil hole blocking device is independently controlled and cooperates with the bottom oil hole of the engine cylinder head.

[0038] The bottom oil hole blocking device comprises a lifting pneumatic element 250 and an upper pressing plug 251 connected to the telescopic end of the lifting pneumatic element 250, and the lifting pneumatic element 250 is connected to the bearing plate 240 through the guide rod 252.

[0039] The upper pressing plug 251 is in a shape structure suitable for the oil hole of the engine cylinder head, and the oil hole at the bottom of the engine cylinder head can be blocked through the upper pressing plug 251.

[0040] The lifting pneumatic element 250 can drive the upper pressing plug 251 to abut or move away from the oil hole, so as to block or unblock the oil hole.

[0041] The transverse translation module 230 comprises a slide rail assembly connected to the bearing plate 240 and a driving cylinder 280 driving the movement of the bearing plate 240, and the side wall of the bearing plate 240 is provided with a connecting block 281 connected to the telescopic end of the driving cylinder 280.

[0042] The opposite ends of the slide rail assembly are provided with limiting stoppers, and the movement stroke of the bearing plate 240 is limited by the limiting stoppers.

[0043] The moving platform 200 further comprises a lower fixed block 220 bearing the transverse translation module 230 and an upper fixed block 260 bearing the engine cylinder, the lower fixed block 220 and the upper fixed block 260 are fixed by the support rod 270, and the end of the upper fixed block 260 is provided with multiple positioning columns 262 suitable for the engine cylinder head.

[0044] The engine cylinder head is placed on the upper fixed block 260, and the position of the engine cylinder head is limited by the positioning columns 262, so as to ensure that the position of the engine cylinder head does not change during the air tightness test.

[0045] In addition, the upper fixed block 260 is provided with an opening 261 suitable for the upper pressing plug 251, and the upper pressing plug 251 moves up and down in the opening 261 under the driving of the lifting pneumatic element 250, so as to complete the blocking or unblocking of the oil hole.

[0046] The bottom of the lower fixed block 220 is provided with a bottom plate 210, and the bottom plate 210 is connected to the support weldment 100 through the vertical translation module 110.

[0047] The bottom plate 210 is provided with a limiting slot (not shown in the figure), and the support welding piece 100 is provided with a limiting cylinder 290, and the telescopic end of the limiting cylinder 290 is provided with a limiting rod 291 which cooperates with the limiting slot.

[0048] The vertical translation module 110 can drive the lower fixed block 220 to linearly move, so as to complete the feeding or discharging of the engine cylinder cover. The position of the bottom plate 210 is fixed through the cooperation of the limiting rod 291 and the limiting slot, so as to fix the airtightness detection position of the engine cylinder cover, and ensure that the position will not change.

[0049] The lower pressing platform 300 comprises a lower pressing plate 310 and an upper sealing device which is detachably connected to the lower pressing plate 310.

[0050] The upper sealing device comprises an upper sealing plate 320 and a side wall oil hole plugging device 330 which is connected to the sealing plate.

[0051] The upper sealing device can be detachably connected to the lower pressing plate 310 in multiple ways. In the embodiment, the bottom of the lower pressing plate 310 is provided with a guide block 311, and the guide block 311 is provided with a guide slot. The upper sealing device is inserted into the bottom of the lower pressing plate 310 along the guide slot and is fixed by bolts.

[0052] The side wall oil hole plugging device 330 comprises a side wall cylinder and a side wall plug, and the side wall plug is driven to move by the side wall cylinder, so as to plug the oil hole of the side wall of the engine cylinder cover.

[0053] The lower pressing plate 310 is connected to the support welding piece 100 through a stand column 400, the end of the stand column 400 is connected to a lower pressing cylinder 600 through a top supporting block 500, the telescopic end of the lower pressing cylinder 600 passes through the top supporting block 500 and is connected to the lower pressing plate 310, so as to drive the lower pressing plate 310 to linearly move along the height direction of the stand column 400.

[0054] The opposite sides of the lower pressing plate 310 are provided with two side wall sealing devices 340, one of which is provided with a first air port (not shown in the figure), and the other is provided with a second air port (not shown in the figure). The first air port, the second air port and the airtightness detection device (not shown in the figure) cooperate with each other to detect the sealing property of the engine cylinder cover.

[0055] The airtightness test adopts a punching test in the engine cylinder body.

[0056] The above examples are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, rather than limit the same, and the protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any person skilled in the art can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some of the technical features, within the technical range disclosed by the present application. The modifications, changes or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application.

Claims

1. An air tightness inspection apparatus for an engine head, characterized by, The support welding piece (100) is movably connected with a moving platform (200) bearing an engine cylinder cover and a lower pressing platform (300) used in cooperation with the moving platform (200); The moving platform (200) comprises a lateral translation module (230), a bearing plate (240) connected to the lateral translation module (230), and a bottom oil hole blocking device, a side wall of the bearing plate (240) is provided with an arc-shaped groove (231), the bottom oil hole blocking device is provided with a guide rod (252) used in cooperation with the arc-shaped groove (231), the guide rod (252) passes through the arc-shaped groove (231) and fixes the bottom oil hole blocking device and the bearing plate (240) through bolts.

2. The air tightness testing apparatus for an engine cylinder head according to claim 1, characterized by, The bottom oil hole blocking device is provided with multiple groups.

3. The air tightness testing apparatus for an engine cylinder head according to claim 2, characterized by, The bottom oil hole blocking device comprises a lifting pneumatic element (250) and an upper pressing plug (251) connected to a telescopic end of the lifting pneumatic element (250), and the lifting pneumatic element (250) is connected to the bearing plate (240) through the guide rod (252).

4. The air tightness testing apparatus for an engine cylinder head according to claim 1, characterized by, The lateral translation module (230) comprises a slide rail assembly connected to the bearing plate (240) and a drive cylinder (280) for driving the bearing plate (240) to move, and a side wall of the bearing plate (240) is provided with a connecting block (281) connected to a telescopic end of the drive cylinder (280).

5. The air tightness testing apparatus for an engine cylinder head according to claim 4, characterized by, Opposite ends of the slide rail assembly are provided with limiting stoppers.

6. The air tightness testing apparatus for an engine cylinder head according to claim 1, characterized by The moving platform (200) further comprises a lower fixed block (220) bearing the lateral translation module (230) and an upper fixed block (260) bearing an engine cylinder body, the lower fixed block (220) and the upper fixed block (260) are fixed through a support rod (270), and an end of the upper fixed block (260) is provided with multiple positioning columns (262) used in cooperation with the engine cylinder cover.

7. The air tightness testing apparatus for an engine cylinder head according to claim 6, characterized by, A bottom plate (210) is arranged at the bottom of the lower fixed block (220) and connected to the support welding piece (100) through a vertical translation module (110). One side of the bottom plate (210) is provided with a limiting groove, and the support welding piece (100) is provided with a limiting cylinder (290), a telescopic end of the limiting cylinder (290) is provided with a limiting rod (291) used in cooperation with the limiting groove.

8. The air tightness testing apparatus for an engine cylinder head according to claim 1, characterized by, The lower pressing platform (300) comprises a lower pressing plate (310) and an upper sealing device detachably connected to the lower pressing plate (310). The upper sealing device comprises an upper sealing plate (320) and a side wall oil hole blocking device (330) connected to the sealing plate.

9. The air tightness testing apparatus for an engine cylinder head according to claim 8, characterized by, The lower pressing plate (310) is connected to the support welding piece (100) through a stand column (400), an end of the stand column (400) is connected to a lower pressing cylinder (600) through a top support block (500), a telescopic end of the lower pressing cylinder (600) is connected to the lower pressing plate (310) through the top support block (500) to drive the lower pressing plate (310) to move linearly along the height direction of the stand column (400).

10. The air tightness testing apparatus for an engine cylinder head according to claim 9, characterized by, The lower pressing plate (310) is provided with two side wall sealing devices (340) on opposite sides, one of which is provided with a first air port, and the other is provided with a second air port, which cooperate with the air tightness detection device to detect the air tightness of the engine cylinder cover.

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