Leakage test plugging device

Abstract

A leakage test plugging device comprises a plugging mechanism attached to a rear oil seal part of an engine. The sealing tape formed between the first sealing ring and the second sealing ring is inflated through the air blowing device, the first air hole and the second air hole, manual leakage testing of the rear oil seal part of the engine is achieved, the whole process is easy to operate, when a leakage testing machine in the rear oil seal leakage testing procedure breaks down, temporary replacement can be achieved, stable operation of a production line is guaranteed, and the production efficiency is improved. And the machining efficiency is prevented from being influenced by shutdown.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the engine assembly technical field, concretely, the utility model relates to a leak test plugging device. BACKGROUND

[0002] The leak test link in the engine assembly process is an important step to ensure the sealing performance of the engine. The main purpose of this link is to detect whether each component and assembly of the engine has a leakage problem to ensure that the engine will not have water leakage, oil leakage, gas leakage and other phenomena in the use process, thereby protecting the normal operation and long service life of the engine. Usually, this process sets up a leak test process for different positions in the engine assembly process, and the rear oil seal leak test process in the engine assembly process is completed by a special leak test machine to test the fit of the cylinder and the crankshaft flange end of the rear oil seal part of the engine.

[0003] Chinese patent (authorized announcement number: CN 212844182U) discloses an engine leak test sealing clamping mechanism, which inflates the engine oil way through the air core shaft, and controls the action of the piston rod through the control piece to make the sealing piece tight or loose, so that the oil way import can be blocked and unblocked. UTILITY MODEL CONTENTS

[0004] The utility model is carried out in order to solve the above problem, the purpose lies in providing a leak test plugging device with strong sealing performance, in order to realize the above purpose, the technical scheme that the utility model adopts is: a leak test plugging device, including the plugging mechanism that is attached with the rear oil seal part of engine.

[0005] The plugging mechanism includes a first sealing plate, the first sealing plate is provided with a sealing groove, the outer circle of the sealing groove is provided with a first sealing ring, the inner circle of the sealing groove is provided with a second sealing ring, and a limiting ring is arranged between the first sealing ring and the second sealing ring.

[0006] A first threaded hole is formed in one side of the first sealing plate, a first air hole is formed in the sealing groove, the first air hole is in communication with the first threaded hole, a second air hole is formed in the limiting ring, and the second air hole is in communication with the first air hole.

[0007] The first limiting ring is connected to the inner side of the first sealing ring, the outer side of the limiting ring is provided with a first limiting groove corresponding to the first limiting ring, and the first limiting ring is matched with the first limiting groove.

[0008] The second limiting ring is arranged on the outer side of the second sealing ring, and the second limiting groove corresponding to the second limiting ring is arranged on the inner side of the limiting ring, and the second limiting ring is matched with the second limiting groove.

[0009] The limiting ring is provided with a through hole, the sealing groove is provided with a second threaded hole corresponding to the position of the through hole, and the second threaded hole is connected with the through hole through a first bolt.

[0010] The through hole is provided with at least two and is uniformly distributed in a circle.

[0011] The first sealing plate is provided with a third threaded hole, and the third threaded hole is connected with a second bolt.

[0012] The third threaded hole is distributed in a circle.

[0013] The first sealing plate is provided with a relief hole.

[0014] The technical effect of the utility model is that: through setting the sealing groove in the first sealing plate, fixing the first sealing ring and the second sealing ring in the sealing groove through the limiting ring, setting the first threaded hole connecting the external blowing equipment on the circumference of the first sealing plate, setting the first air hole connecting the first threaded hole in the sealing groove, setting the second air hole connecting the first air hole on the limiting ring, when using, the first sealing ring and the second sealing ring are respectively attached to the surface of the cylinder body and the surface of the crank flange of the engine rear oil seal part by hand holding the first sealing plate, the sealing band formed between the first sealing ring and the second sealing ring is inflated by the external blowing equipment, the manual leak detection of the engine rear oil seal part is realized, and the problem that the production line stops when the special leak detection machine breaks down is solved.

[0015] The utility model discloses through setting the third threaded hole in the first sealing plate, and the second bolt is connected in each third threaded hole, when using, two second bolts are respectively screwed tightly, and the threaded end is connected with the flange threaded hole corresponding to the crank flange end in the thread, can effectively increase the pressure of the first sealing plate and the surface of the cylinder body and the crank flange end of the engine rear oil seal part, and the sealing effect of the first sealing ring and the second sealing ring is enhanced. ACCURATE DRAWINGS

[0016] The present specification includes the following drawings, and the shown contents are respectively:

[0017] Fig. 1 It is the overall structure split drawing of the utility model leak detection plugging device;

[0018] Fig. 2 It is the overall structure assembly drawing of the utility model leak detection plugging device;

[0019] Fig. 3 It is the overall structure section view of the utility model leak detection plugging device;

[0020] Fig. 4 It is the first sealing plate structure schematic drawing of the utility model leak detection plugging device;

[0021] Fig. 5 It is a limiting ring structure schematic view of the leak test plugging device of the utility model;

[0022] Fig. 6 It is a second sealing ring structure schematic view of the leak test plugging device of the utility model;

[0023] Fig. 7 It is a first sealing ring structure schematic view of the leak test plugging device of the utility model.

[0024] Marked as: 1, first sealing plate;101, sealing groove;102, first air hole;103, first threaded hole;104, second threaded hole;105, avoiding hole;106, third threaded hole;2, limiting ring;201, second air hole;202, through hole;203, first limiting groove;204, second limiting groove;3, second sealing ring;301, second limiting ring;4, first sealing ring;401, first limiting ring;5, first bolt;6, second bolt. DETAILED DESCRIPTION

[0025] The specific embodiments of the present application are further described in detail below with reference to the drawings, and the purpose is to help the skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present application, and to help its implementation.

[0026] As Figs. 1-7 shown, a leak test plugging device, comprising a plugging mechanism that fits with the engine rear oil seal part.

[0027] The plugging mechanism comprises a first sealing plate 1, the first sealing plate 1 is provided with a sealing groove 101, the outer circle of the sealing groove 101 is provided with a first sealing ring 4, the inner circle of the sealing groove 101 is provided with a second sealing ring 3, a limiting ring 2 is arranged between the first sealing ring 4 and the second sealing ring 3, and the first sealing plate 1 is further provided with a ventilation mechanism. When in use, the first sealing plate 1 is held by hand to fit the first sealing ring 4 and the second sealing ring 3 with the cylinder surface and the crankshaft flange surface of the engine rear oil seal part respectively, an external blowing equipment is used to inflate the sealing belt formed between the first sealing ring 4 and the second sealing ring 3 through the ventilation mechanism, manual leak test of the engine rear oil seal part is realized, and the problem that the production line stops when the special leak test machine breaks down is solved.

[0028] The first sealing plate 1 is provided with a first threaded hole 103 on one side, the sealing groove 101 is provided with a first air hole 102, the first air hole 102 is communicated with the first threaded hole 103, the limiting ring 2 is provided with a second air hole 201, and the second air hole 201 is communicated with the first air hole 102. The first sealing plate 4 is provided with a first threaded hole 103 on the circumferential side for connecting an external air blowing device, the air blowing device is connected to the first threaded hole 103 and the first air hole 102, and then the second air hole 201 is used to inflate the sealing belt, so that manual leakage detection is realized on the engine rear oil seal part.

[0029] The first limiting ring 401 is connected to the inner side of the first sealing ring 4, the outer side of the limiting ring 2 is provided with a first limiting groove 203 corresponding to the first limiting ring 401, and the first limiting ring 401 is matched with the first limiting groove 203. The first limiting ring 401 is clamped with the first limiting groove 203, so that the connection between the first sealing ring 4 and the limiting ring 2 is more stable, and the sealing performance is stronger.

[0030] The second limiting ring 301 is arranged on the outer side of the second sealing ring 3, and the second limiting groove 204 corresponding to the second limiting ring 301 is arranged on the inner side of the limiting ring 2. The second limiting ring 301 is matched with the second limiting groove 204. The second limiting ring 301 is clamped with the second limiting groove 204, so that the connection between the second sealing ring 3 and the limiting ring 2 is more stable, and the sealing performance is stronger.

[0031] The limiting ring 2 is provided with a through hole 202, the sealing groove 101 is provided with a second threaded hole 104 corresponding to the position of the through hole 202, and the second threaded hole 104 is connected with the through hole 202 through the first bolt 5. The first bolt 5 connects the through hole 202 and the second threaded hole 104 to connect the first sealing ring 4, the second sealing ring 3, the limiting ring 2 and the first sealing plate 1 together, so that the connection is more stable and the sealing performance is stronger.

[0032] The through hole 202 is provided with at least two and is uniformly distributed in a circle. The plurality of through holes 202 make the connection between the limiting ring 2 and the first sealing plate 1, the first sealing ring 4 and the second sealing ring 3 more stable, and the sealing performance is stronger.

[0033] The first sealing plate 1 is provided with a third threaded hole 106, and the third threaded hole 106 is connected with the second bolt 6. The back surface of the first sealing plate 1 is provided with a third threaded hole 106, and the second bolt 6 is screwed in each third threaded hole 106. When used, the two second bolts 6 are respectively screwed, the threaded ends are screwed with the flange threaded holes corresponding to the crankshaft flange end, the pressure between the first sealing plate 1 and the surface of the cylinder and the crankshaft flange end of the engine rear oil seal part is effectively increased, and the sealing effect of the first sealing ring 4 and the second sealing ring 3 is enhanced.

[0034] The third threaded hole 106 is circumferentially symmetrically distributed. The second bolt 6 and the third threaded hole 106 and the flange threaded hole corresponding to the crankshaft flange end are threadedly connected, the pressure of the first sealing plate 1 and the surface of the cylinder and the crankshaft flange end of the engine rear oil seal part is increased, the connection is more stable, and the sealing is stronger.

[0035] The first sealing plate 1 is provided with an avoiding hole 105. The front surface of the first sealing plate 1 is provided with the avoiding hole 105, which is used for avoiding the protrusion on the surface of the crankshaft flange end when the first sealing plate 1 is attached to the engine rear oil seal part, and facilitates the attachment.

[0036] Effects of the embodiment

[0037] In use, the first sealing plate 1 is held by hand to tightly attach the first sealing ring 4 and the second sealing ring 3 to the surface of the cylinder and the crankshaft flange end of the engine rear oil seal part, then the second bolt 6 is tightened, and the threaded end of the second bolt 6 is threadedly connected with the flange threaded hole corresponding to the crankshaft flange end, so that the pressure of the first sealing plate 1 and the surface of the cylinder and the crankshaft flange end of the engine rear oil seal part can be effectively increased, and the sealing effect of the first sealing ring 4 and the second sealing ring 3 is enhanced. The front surface of the first sealing plate 1 is provided with the avoiding hole 105, which is used for avoiding the protrusion on the surface of the crankshaft flange end when the first sealing plate 1 is attached to the engine rear oil seal part, and facilitates the attachment. By connecting the external air blowing equipment with the first threaded hole 103 and starting the air blowing equipment, the sealing band formed between the first sealing ring 4 and the second sealing ring 3 can be inflated through the first air hole 102 and the second air hole 201, manual leak detection of the engine rear oil seal part can be realized, the whole process is simple to operate, and when the leak detection machine of the rear oil seal leak detection process fails, it can be temporarily replaced to ensure the stable operation of the production line and avoid the influence of stoppage on the processing efficiency.

[0038] The utility model is described exemplarily above in combination with the drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned mode. As long as various non-essential improvements are made by adopting the method concept and technical scheme of the utility model, or the above-mentioned concept and technical scheme of the utility model are directly applied to other occasions without improvement, all falls within the protection scope of the utility model.

Claims

1. A leak testing plugging device, characterized by: The application relates to a sealing mechanism which is attached to the rear oil seal part of an engine, and the sealing mechanism comprises a first sealing plate (1) which is provided with a sealing groove (101), a first sealing ring (4) arranged at the outer ring of the sealing groove (101), a second sealing ring (3) arranged at the inner ring of the sealing groove (101), and a limiting ring (2) arranged between the first sealing ring (4) and the second sealing ring (3).

2. A leak testing plug-in device according to claim 1, characterized in that: The air passage mechanism comprises a first threaded hole (103) arranged at one side of the first sealing plate (1), a first air hole (102) arranged in the sealing groove (101), and a second air hole (201) arranged in the limiting ring (2), wherein the first air hole (102) is in communication with the first threaded hole (103), and the second air hole (201) is in communication with the first air hole (102).

3. A leak testing plug-in device according to claim 2, characterized in that: The first sealing ring (4) is connected with a first limiting ring (401) at the inner side, the outer side of the limiting ring (2) is provided with a first limiting groove (203) corresponding to the first limiting ring (401), and the first limiting ring (401) is matched with the first limiting groove (203).

4. A leak testing plug-in device according to claim 3, characterized in that: The outer side of the second sealing ring (3) is provided with a second limiting ring (301), and the inner side of the limiting ring (2) is provided with a second limiting groove (204) corresponding to the second limiting ring (301), and the second limiting ring (301) is matched with the second limiting groove (204).

5. A leak testing plugging device according to any one of claims 1 to 4, characterized in that: The limiting ring (2) is provided with a through hole (202), the sealing groove (101) is provided with a second threaded hole (104) corresponding to the position of the through hole (202), and the second threaded hole (104) is connected with the through hole (202) through a first bolt (5).

6. A leak testing plug-in device according to claim 5, characterized in that: The through hole (202) is arranged at least twice and is uniformly distributed in a circle.

7. The leak testing plug of claim 1, wherein: The first sealing plate (1) is provided with a third threaded hole (106) penetrating through, and the third threaded hole (106) is connected with a second bolt (6).

8. A leak testing plug according to claim 7, wherein: The third threaded hole (106) is distributed in a circle in a symmetrical mode.

9. The leak testing plug of claim 1, wherein: The first sealing plate (1) is provided with an avoiding hole (105).

Images