Sealing plug structure for pressure test of engine cylinder cover

Abstract

The utility model belongs to the technical field of engine cylinder body processing and testing equipment, in particular to an engine cylinder cover pressure test sealing plug structure, which comprises a plug integration frame and a flexible rubber sleeve arranged at the front end of the plug integration frame. Through the arrangement of the displacement stretching rod, the sealing ring, the connecting rod, the connecting frame, the supporting frame and the connecting shaft, the flexible rubber sleeve is inserted into the inner side of a water channel hole of an engine cylinder cover, so that the flexible rubber sleeve is attached to the inner wall of a water channel opening, the handle drives the displacement stretching rod to move synchronously, and when the displacement stretching rod moves, the connecting frame on the outer side of the displacement stretching rod is also driven; and the connecting rod is driven to rotate under the support of the connecting shafts on the two sides until the tail ends of the two sides of the connecting rod are located on the same plane, at the moment, the five groups of supporting frames jack up the interior of the flexible rubber sleeve, and compared with an existing solid plug structure, the universality is improved, meanwhile, the disassembly and assembly steps of the structure are simplified through control over the displacement stretching rod, and the disassembly and assembly efficiency is improved. And the method is simpler and quicker.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine cylinder block processing test technical field, concretely is engine cylinder cover pressure test sealing plug structure. BACKGROUND

[0002] Engine cylinder cover pressure test sealing plug is a device for sealing engine cylinder cover water channel hole, is mainly used in preventing water or gas leakage in pressure test process, ensures the accuracy and reliability of pressure test. This kind of sealing plug is usually coupled with engine cylinder cover by bolt, can seal water channel hole, so that the leakage point of any part can be observed without obstacle, thereby accurate detection is carried out.

[0003] Prior art has the following deficiencies: in prior art, the publication number CN208488257U "engine cylinder block pressure test sealing plug structure" includes "the plug-in branch plate is set with sealing plug on the plug-in branch plate, the sealing plug includes the plug-in seat fixed on the plug-in branch plate, the plug-in body is fixed on the bottom surface center of plug-in seat, three semicircular plug-in cover plates are also set on the bottom surface of plug-in seat, the top surface of plug-in cover plate is connected on the bottom surface of plug-in seat through rotating shaft, three plug-in cover plates are combined into an integral circular ring plate and the inner diameter of integral circular ring plate is same with the outer diameter of plug-in body, the clamping hole is set on the outer wall of plug-in body and the sealing rubber pad layer is wrapped on the surface of plug-in body, the clamping buckle convex column fixed on the inner side surface of plug-in cover plate is matched with clamping hole, when plug-in cover plate is covered on the surface of plug-in body, clamping buckle convex column is clamped and fixed in clamping hole".

[0004] The above structure can adapt to plugging operation of different diameters by clamping and fixing clamping buckle convex column in clamping hole, but the structure only adapts to pipelines of different diameters by mutual superposition of plugging structures of different diameters, and the installation needs to be adjusted according to the diameter of pipeline, and the disassembly is also relatively troublesome. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides engine cylinder cover pressure test sealing plug structure, solves the problems of low self-adaptation degree and inconvenient disassembly steps existing at present.

[0006] To achieve the above object, the utility model provides the following technical scheme: engine cylinder cover pressure test sealing plug structure, including plug-in integration frame and flexible rubber sleeve, the flexible rubber sleeve is set in the front end of plug-in integration frame.

[0007] The middle part of plug-in integration frame is provided with displacement stretching rod, and the outer side of displacement stretching rod is provided with connecting rod.

[0008] The displacement stretching rod further includes handle and sealing ring, the handle is fixedly connected to the tail end of displacement stretching rod, and the sealing ring is sleeved on the periphery of displacement stretching rod.

[0009] As a preferred technical scheme of the utility model, the side end of the variable position stretching rod away from the handle is in an umbrella structure, and the diameter is greater than that of the variable position stretching rod.

[0010] As a preferred technical scheme of the utility model, the variable position stretching rod penetrates the middle part of the plug integration frame, and the side end of the sealing ring is fixedly installed at the position where the variable position stretching rod penetrates the plug integration frame.

[0011] As a preferred technical scheme of the utility model, the connecting rod further comprises a connecting frame, a support frame and a connecting shaft, the connecting frame is fixedly connected to the outer side end surface of the variable position stretching rod, the support frame is movably connected to the other side end of the connecting rod through the connecting shaft, and the connecting shaft is movably connected to the side end of the connecting rod.

[0012] As a preferred technical scheme of the utility model, the other side of the support frame is fixedly connected to the inner wall of the flexible rubber sleeve, and the position where the side end of the connecting rod contacts the connecting frame is penetrated by the connecting shaft, so that the active connection relationship is established.

[0013] As a preferred technical scheme of the utility model, five groups of the connecting rods are equidistantly and circumferentially arranged on the outer side of the variable position stretching rod.

[0014] As a preferred technical scheme of the utility model, the flexible rubber sleeve is made of butyl rubber, is in a whole tubular structure, and is provided with an inclined angle on the outside of the insertion end.

[0015] Compared with the prior art, the utility model provides the engine cylinder cover pressure test sealing plug structure, has the following beneficial effects:

[0016] The engine cylinder cover pressure test sealing plug structure is provided with a variable position stretching rod, a sealing ring, a connecting rod, a connecting frame, a support frame and a connecting shaft, when the equipment is used, the operator needs to keep the connecting rod in an inclined state, inserts the flexible rubber sleeve into the inside of the engine cylinder cover water channel hole, makes the flexible rubber sleeve stick to the inner wall of the water channel opening, then holds the handle, pulls outwards, drives the variable position stretching rod to move synchronously, the connecting frame on the outside of the variable position stretching rod is also driven to move, and the connecting rod rotates under the support of the two connecting shafts, until the two side ends of the connecting rod are in the same plane and stop, at this time, the five support frames lift the inside of the flexible rubber sleeve, and make the flexible rubber sleeve tightly stick to the inner wall of the water channel opening, if the structure needs to be removed, only needs to push the variable position stretching rod inwards, the connecting rod resets and keeps inclined, the flexible rubber sleeve softens after losing the inside pressure, and can be directly taken out at this time. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the front end structure schematic diagram of the utility model;

[0019] Figure 3 It is the position change stretching rod and connecting frame connecting position structure schematic diagram of the utility model;

[0020] Figure 4 It is the position change stretching rod end structure schematic diagram of the utility model.

[0021] In the drawing: 1, plug-in integrated frame; 2, flexible rubber sleeve; 3, position change stretching rod; 301, handle; 302, sealing ring; 4, connecting rod; 401, connecting frame; 402, support frame; 403, connecting shaft. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] In the embodiment: the engine cylinder cover pressure test sealing plug structure includes plug-in integrated frame 1 and flexible rubber sleeve 2, and the flexible rubber sleeve 2 is arranged at the front end of the plug-in integrated frame 1.

[0024] The middle part of the plug-in integrated frame 1 is provided with a position change stretching rod 3, and the outer side of the position change stretching rod 3 is provided with a connecting rod 4.

[0025] The position change stretching rod 3 further includes a handle 301 and a sealing ring 302, the handle 301 is fixedly connected to the end of the position change stretching rod 3, and the sealing ring 302 is sleeved on the periphery of the position change stretching rod 3.

[0026] In the embodiment, the side end of the position change stretching rod 3 away from the handle 301 is in an umbrella structure, and the diameter of the umbrella structure is greater than that of the position change stretching rod 3; the position change stretching rod 3 penetrates the middle part of the plug-in integrated frame 1, and the side end of the sealing ring 302 is fixedly installed at the side end of the position change stretching rod 3 penetrating the plug-in integrated frame 1.

[0027] Specifically, as shown in Figure 1 and Figure 4 , the umbrella structure at the end of the position change stretching rod 3 can prevent the position change stretching rod 3 from coming out, and the sealing ring 302 does not change position with the movement of the position change stretching rod 3.

[0028] In the embodiment, the connecting rod 4 further comprises a connecting frame 401, a supporting frame 402 and a connecting shaft 403, the connecting frame 401 is fixedly connected to the outer end surface of the variable position stretching rod 3, the supporting frame 402 is movably connected to the other side end of the connecting rod 4 through the connecting shaft 403, the connecting shaft 403 is movably connected to the side end of the connecting rod 4; the other side of the supporting frame 402 is fixedly connected to the inner wall of the flexible rubber sleeve 2, the position of the side end of the connecting rod 4 in contact with the connecting frame 401 is penetrated by the connecting shaft 403, and the active connection relationship is established.

[0029] Specifically, as shown in Figure 2 and Figure 3 , the two side ends of the connecting rod 4 are connected with the connecting frame 401 and the supporting frame 402 through the connecting shaft 403 respectively, and swing within a limited range, and the internal pressure of the flexible rubber sleeve 2 reaches the maximum value when the connecting rod 4 is in a horizontal state.

[0030] In the embodiment, the connecting rod 4 is provided with five groups and is equidistantly distributed around the outer side of the variable position stretching rod 3; the flexible rubber sleeve 2 is specifically made of butyl rubber, has a whole tubular structure, and is provided with an inclined angle on the outside of the insertion end.

[0031] The working principle and use process of the utility model are as follows: when the equipment is used, the operator needs to keep the connecting rod 4 in an inclined state, inserts the flexible rubber sleeve 2 into the inside of the water channel hole of the engine cylinder cover, makes the flexible rubber sleeve 2 stick to the inner wall of the water channel, then holds the handle 301 and pulls out to the outside, the handle 301 drives the variable position stretching rod 3 to move synchronously, when the variable position stretching rod 3 moves, the connecting frame 401 on the outside is also driven and makes the connecting rod 4 rotate under the support of the two connecting shafts 403, until the two side ends of the connecting rod 4 are in the same plane and stop, at this time, the five supporting frames 402 lift the inside of the flexible rubber sleeve 2 and make the flexible rubber sleeve 2 tightly stick to the inner wall of the water channel, if it is needed to remove the structure, only need to push the variable position stretching rod 3 inwards, the connecting rod 4 resets and keeps inclined, the flexible rubber sleeve 2 softens after losing the internal pressure, at this time, it can be directly taken out.

[0032] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. An engine cylinder head pressure test sealing plug structure, comprising a plug integration frame (1) and a flexible rubber sleeve (2), the flexible rubber sleeve (2) being arranged at the front end of the plug integration frame (1), characterized in that: a displacement stretching rod (3) is arranged in the middle of the plug integration frame (1), and a connecting rod (4) is arranged outside the displacement stretching rod (3); the displacement stretching rod (3) further comprises a handle (301) and a sealing ring (302), the handle (301) being fixedly connected to the end of the displacement stretching rod (3), and the sealing ring (302) being sleeved on the periphery of the displacement stretching rod (3).

2. The engine cylinder head pressure testing plug structure of claim 1, wherein: The end of the displacement stretching rod (3) away from the handle (301) is in an umbrella-shaped structure, and the diameter thereof is greater than that of the displacement stretching rod (3).

3. The engine cylinder head pressure testing plug structure of claim 1, wherein: The displacement stretching rod (3) penetrates the middle of the plug integration frame (1), and the side end of the sealing ring (302) is fixedly installed at the side end of the displacement stretching rod (3) penetrating the plug integration frame (1).

4. The engine cylinder head pressure testing plug structure of claim 1, wherein: The connecting rod (4) further comprises a connecting frame (401), a support frame (402) and a connecting shaft (403), the connecting frame (401) being fixedly connected to the outer end face of the displacement stretching rod (3), the support frame (402) being movably connected to the other end of the connecting rod (4) through the connecting shaft (403), and the connecting shaft (403) being movably connected to the side end of the connecting rod (4).

5. The engine cylinder head pressure testing plug structure of claim 4, wherein: The other side of the support frame (402) is fixedly connected to the inner wall of the flexible rubber sleeve (2), the position of the side end of the connecting rod (4) contacting the connecting frame (401) is penetrated by the connecting shaft (403), and an active connection relationship is established.

6. The engine cylinder head pressure testing plug structure of claim 1, wherein: Five groups of the connecting rods (4) are arranged at equal intervals around the outside of the displacement stretching rod (3).

7. The engine cylinder head pressure testing plug structure of claim 1, wherein: The flexible rubber sleeve (2) is made of butyl rubber, has a whole tubular structure, and the outside of the insertion end is provided with an inclined angle.

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