CN111811742A

CN111811742A - Engine rear end cover air tightness test device

Info

Publication number: CN111811742A
Application number: CN202010840124.6A
Authority: CN
Inventors: 许腾; 刘斯
Original assignee: Hunan Jiali Machinery Co ltd
Current assignee: Hunan Jiali Machinery Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2020-10-23

Abstract

Engine rear end cap gas tightness test device relates to detection test equipment technical field, and it includes water tank and airtight platform, airtight platform includes roof, bottom plate and the backup pad of connecting roof and bottom plate, airtight bench is provided with a plurality of hold-down mechanism that are used for compressing tightly the work piece, airtight bench still is provided with the side pressure mechanism that is used for compressing tightly the work piece from the work piece side, be connected with the intake pipe on the clamp plate, thereby the one end of intake pipe stretches into the clamp plate and extends to the preceding terminal surface of clamp plate and can communicate inside the work piece, the top of airtight platform is equipped with the top cylinder, the bottom of top cylinder piston rod is down and fixedly connected with is used for following the apron of top closing cap work piece, the bottom fixedly connected with a plurality of apron is used for the post piece in the hole of shutoff work piece, be equipped with the lift. The air cylinder can be used for driving the air-tight table to directly move into the water tank, so that the working efficiency is improved, the labor force is reduced, and the accuracy of the air-tight test is improved.

Description

Engine rear end cover air tightness test device

Technical Field

The invention relates to the technical field of detection test equipment, in particular to an engine rear end cover air tightness test device.

Background

The engine rear end cover is an important component of the whole structure of the engine, and in order to ensure the sealing effect of the engine, the rear end cover needs to have strict sealing performance, so that the air tightness test is usually performed on the rear end cover before the rear end cover leaves a factory. According to the traditional rear end cover air tightness test, a workpiece is clamped and connected with an air pipe through a set of simple clamp, hoisting equipment such as an electric hoist is used for hoisting into a water tank, the labor intensity of the operation process is high, the efficiency is low, the clamp loosening and other conditions possibly caused in the operation process are avoided, and the accuracy of the air tightness test is influenced.

Disclosure of Invention

The invention aims to provide an engine rear end cover air tightness test device, which can utilize an air cylinder to drive an air tightness platform to directly move into a water tank so as to improve the working efficiency, reduce the labor force and improve the accuracy of an air tightness test.

In order to solve the technical problems, the invention adopts the following technical scheme: an engine rear end cover air tightness test device comprises a water tank and an air tight table, wherein the air tight table comprises a top plate, a bottom plate and a supporting plate for connecting the top plate and the bottom plate, a plurality of pressing mechanisms for pressing workpieces are arranged on the air tight table, each pressing mechanism comprises a pressing cylinder arranged on the bottom plate, a pressing block positioned above the top plate and hinged to the top end of a piston rod of the pressing cylinder, and hinged plates with two ends respectively hinged to the middle of the pressing block and the top plate, a side pressing mechanism for pressing the workpieces from the side surfaces of the workpieces is further arranged on the air tight table, each side pressing mechanism comprises a side pressing cylinder arranged on the top plate, a pressing plate connected to the front end of the piston rod of the side pressing cylinder and used for abutting against the rear side surface of the workpieces, an air inlet pipe is connected to the pressing plate, one end of the air inlet pipe extends into the pressing plate and extends, the bottom of top cylinder piston rod is down and fixedly connected with is used for following the apron of top closing cap work piece, the bottom fixedly connected with a plurality of apron is used for the post piece in the hole on the shutoff work piece, be equipped with the lift cylinder in the water tank, the top of lift cylinder piston rod is up and is connected the bottom plate, the lift cylinder can drive airtight platform and reciprocate to can make the work piece immerses the aquatic in the water tank.

Preferably, a supporting column is fixedly arranged in each of the four top corners of the top end face of the top plate, the top end of each supporting column is connected to a mounting plate parallel to the top plate, and the top cylinder is mounted on the mounting plate.

More preferably, a guide post is arranged in the water tank along the vertical direction, a guide plate is fixedly connected to one side of the airtight platform, and a U-shaped groove for matching with the guide post is formed in one end of the guide plate.

More preferably, the rear end of the upper surface of the top plate is provided with a fixed plate, the number of the side pressure cylinders is two, the two side pressure cylinders are arranged on the rear end surface of the fixed plate in parallel, and the front ends of the piston rods of the side pressure cylinders penetrate through the fixed plate and are connected with the pressure plate.

More preferably, the number of the pressing mechanisms is 5.

The invention has the beneficial effects that: the rear end cover workpiece of the engine is placed on the top plate, after the workpiece is positioned and clamped well through the pressing mechanism, the top cylinder and the side pressing mechanism, the whole airtight platform and the workpiece can be driven by the lifting cylinder to rapidly descend into water in the water tank, and then the air inlet pipe can be ventilated to perform an air tightness test. This process can effectively improve work efficiency, reduce the labour to because the stability that lift cylinder drove airtight platform and work piece removal is better than traditional manually operation electric hoist, consequently can avoid frock clamp's pine to a great extent to take off, and then improves gas tightness test's accuracy.

Drawings

FIG. 1 is a schematic overall structure diagram in an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a plan perspective view of the entire structure in the embodiment.

The reference signs are:

1-water tank 2-airtight table 2 a-top plate

2 b-bottom plate 2 c-supporting plate 3-workpiece

4 a-pressing cylinder 4 b-pressing block 4 c-hinged plate

5 a-side pressure cylinder 5 b-pressure plate 6-air inlet pipe

7-top cylinder 8-cover plate 8 a-column block

9-lifting cylinder 10-support column 11-mounting plate

12-guide post 13-guide plate 14-fixing plate.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Further, in the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not in direct contact, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.

As shown in fig. 1-3, the air tightness test device for the rear end cover of the engine comprises a water tank 1 and an airtight platform 2, wherein the airtight platform 2 comprises a top plate 2a, a bottom plate 2b and a supporting plate 2c connecting the top plate 2a and the bottom plate 2b, a plurality of pressing mechanisms for pressing a workpiece 3 are arranged on the airtight platform 2, each pressing mechanism comprises a pressing cylinder 4a arranged on the bottom plate 2b, a pressing block 4b positioned above the top plate 2a and hinged to the top end of a piston rod of the pressing cylinder 4a, and a hinged plate 4c with two ends respectively hinged to the middle of the pressing block 4b and the top plate 2a, a side pressing mechanism for pressing the workpiece 3 from the side surface of the workpiece 3 is further arranged on the airtight platform 2, each side pressing mechanism comprises a side pressing cylinder 5a arranged on the top plate 2a and a pressing plate 5b connected to the front end of the piston rod of the side pressing cylinder 5, thereby the one end of intake pipe 6 stretches into clamp plate 5b and extends to clamp plate 5 b's preceding terminal surface can communicate inside work piece 3, the top of airtight platform 2 is equipped with top cylinder 7, the bottom of top cylinder 7 piston rod is down and fixedly connected with is used for the apron 8 from top closing cap work piece 3, the bottom fixedly connected with a plurality of apron 8 is used for the column block 8a in the hole on the shutoff work piece 3, be equipped with lift cylinder 9 in the water tank 1, the top of lift cylinder 9 piston rod is up and is connected bottom plate 2b, lift cylinder 9 can drive airtight platform 2 and reciprocate, thereby can make the aquatic of work piece 3 immersion in the water tank 1.

When the engine rear end cover air tightness test device provided by the embodiment works, firstly, the position of the air tightness platform 2 is positioned above the water tank 1, an engine rear end cover workpiece is placed on the top plate 2a, the workpiece 3 is positioned and clamped well through the pressing mechanism, the top cylinder 7 and the side pressing mechanism, the whole air tightness platform 2 and the workpiece 3 can be driven by the lifting cylinder 9 to rapidly descend into the water in the water tank 1, then, the air inlet pipe 6 can be ventilated to perform an air tightness test, whether bubbles are generated in the water tank 1 to evaluate the air tightness is observed, the air tightness platform 2 is pushed upwards through the lifting cylinder 9 after the test is completed, the workpiece 3 can be pushed upwards from the water in the water tank 1, then, the side pressing mechanism, the top cylinder 7 and the pressing mechanism are sequentially released, and the workpiece 3 can be taken down. This process can effectively improve work efficiency, reduce the labour to because the stability that lift cylinder 9 drove airtight platform 2 and the removal of work piece 3 is better than traditional manually operation electric hoist, consequently can avoid frock clamp's pine to a great extent to take off, and then improves gas tightness test's accuracy.

It should be noted that, as will be known by those skilled in the art, each cylinder structural component in the device has a normal waterproof effect, in a specific test process, a part of threaded holes on the workpiece 3 can be sealed by screwing in the plugs in advance, and structures such as shaft holes on the workpiece 3 can be sealed by the cover plate 8 or the column blocks 8a, and those skilled in the art do not have any technical obstacles on the positions and the number of the column blocks 8a, and they need to be designed correspondingly according to the actual structure of the workpiece 3.

Preferably, a supporting column 10 is fixedly arranged in each of four top corners of the top end surface of the top plate 2a, the top end of each supporting column 10 is connected to a mounting plate 11 parallel to the top plate 2a, and the top cylinder 7 is mounted on the mounting plate 11.

More preferably, a guide post 12 is arranged in the water tank 1 along the vertical direction, a guide plate 13 is fixedly connected to one side of the airtight platform 2, a U-shaped groove for matching with the guide post 12 is formed in one end of the guide plate 13, and the stability of the airtight platform 2 during the lifting and moving process can be effectively improved by the structure that the guide plate 13 is arranged and matched with the guide post 12.

More preferably, the rear end of the upper surface of the top plate 2a is provided with a fixed plate 14, the number of the side pressure cylinders 5a is two, two side pressure cylinders 5a are mounted in parallel on the rear end surface of the fixed plate 14, and the front ends of the piston rods of the side pressure cylinders 5a penetrate through the fixed plate 14 and are connected with the pressure plate 5 b.

In addition, in this embodiment, the number of the pressing mechanisms is 5, the pressing block 4b in the pressing mechanism can be directly designed into a rectangular block structure, the processing and the manufacturing are convenient, a notch can be opened in the middle of the rear end of the pressing block 4b, the top end of the piston rod of the pressing cylinder 4a can be designed into a strip-shaped body capable of being inserted into the notch, and the pressing block 4b can be hinged to the top end of the piston rod of the pressing cylinder 4a by connecting the rear end of the pressing block 4b with the strip-shaped body through a pin shaft.

The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.

Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.

Claims

1. Engine rear end cover air tightness test device, its characterized in that: the device comprises a water tank (1) and an airtight platform (2), wherein the airtight platform (2) comprises a top plate (2 a), a bottom plate (2 b) and a supporting plate (2 c) for connecting the top plate (2 a) and the bottom plate (2 b), a plurality of pressing mechanisms for pressing workpieces (3) are arranged on the airtight platform (2), each pressing mechanism comprises a pressing cylinder (4 a) arranged on the bottom plate (2 b), a pressing block (4 b) located above the top plate (2 a) and hinged to the top end of a piston rod of the pressing cylinder (4 a), and a hinged plate (4 c) with two ends hinged to the middle of the pressing block (4 b) and the top plate (2 a) respectively, a lateral pressing mechanism for pressing the workpieces (3) from the side face of the workpieces (3) is further arranged on the airtight platform (2), and the lateral pressing mechanism comprises a lateral pressing cylinder (5 a) arranged on the top plate (2 a), and a pressing plate (5 b) connected to the front end of the piston rod of the lateral pressing cylinder (5 a) and used The utility model discloses a water tank, be connected with intake pipe (6) on clamp plate (5 b), thereby the one end of intake pipe (6) stretches into clamp plate (5 b) and extends to the preceding terminal surface of clamp plate (5 b) inside can communicate work piece (3), the top of airtight platform (2) is equipped with top cylinder (7), the bottom of top cylinder (7) piston rod is down and fixedly connected with is used for apron (8) from top closing cap work piece (3), the bottom fixedly connected with a plurality of apron (8) is used for post piece (8 a) of the hole on shutoff work piece (3), be equipped with lift cylinder (9) in water tank (1), the top of lift cylinder (9) piston rod is up and bottom plate (2 b) are connected, lift cylinder (9) can drive airtight platform (2) and reciprocate, thereby can make work piece (3) dip in water tank (1).

2. The engine rear end cover airtightness testing apparatus according to claim 1, wherein: the top cylinder is characterized in that supporting columns (10) are fixedly arranged in four top corners of the top end face of the top plate (2 a) respectively, the top end of each supporting column (10) is connected to a mounting plate (11) parallel to the top plate (2 a), and the top cylinder (7) is mounted on the mounting plate (11).

3. The engine rear end cover airtightness testing apparatus according to claim 2, wherein: the water tank (1) is internally provided with a guide pillar (12) along the vertical direction, one side of the airtight platform (2) is fixedly connected with a guide plate (13), and one end of the guide plate (13) is provided with a U-shaped groove used for being matched with the guide pillar (12).

4. The engine rear end cover airtightness testing apparatus according to claim 3, wherein: the rear end of the upper surface of the top plate (2 a) is provided with a fixed plate (14), the number of the lateral pressure cylinders (5 a) is two, the two lateral pressure cylinders (5 a) are arranged on the rear end surface of the fixed plate (14) in parallel, and the front ends of piston rods of the lateral pressure cylinders (5 a) penetrate through the fixed plate (14) and are connected with a pressure plate (5 b).

5. The engine rear end cover airtightness testing apparatus according to claim 4, wherein: the number of the pressing mechanisms is 5.