Quick tensioning and leaking stoppage structure for leaking hole

Abstract

The utility model discloses a leakage hole quick tensioning and leaking stoppage structure which comprises a fixing sleeve, the outer diameter of the fixing sleeve is matched with the inner diameter of a leakage hole, a tensioning mandrel is connected in the fixing sleeve in a sliding and sleeved mode, the top of the tensioning mandrel is connected with an eccentric wheel type pressure lifting mechanism, the eccentric wheel type pressure lifting mechanism is located outside the fixing sleeve, and the outer diameter of the fixing sleeve is matched with the inner diameter of the leakage hole. A limiting extrusion block is arranged at the bottom of the tensioning mandrel, a tensioning ring structure is arranged between the top face of the limiting extrusion block and the bottom face of the fixing sleeve, and O-shaped rings are arranged at the top and the bottom of a tensioning ring. The problems that an existing leakage hole plugging structure generally adopts a nut and screw tightening mode to generate axial movement, an O-shaped ring or a rubber mat in the middle of an interlayer is compressed, so that plugging, tensioning and leakage detecting of a leakage hole are difficult in a long and narrow space without wrench operation, and tensioning and plugging of a large leakage hole cannot be rapidly achieved are solved.

Description

Technical Field

[0001] The utility model relates to the field of leakage hole plugging structures, in particular to a leakage hole fast tightening plugging structure. Background Art

[0002] A leak hole refers to a hole that needs to be blocked in a channel that needs to be tested for air or water. After blocking, the channel is completely closed and the leak point can be checked.

[0003] The existing leakage hole expansion and plugging method uses a nut and screw tightening method to produce axial movement, thereby compressing the O-ring or rubber pad in the middle of the interlayer, causing it to expand radially to the same diameter as the leakage hole, and continuously increasing the compression force to achieve a balance with the leak detection air pressure for plugging and leak detection.

[0004] This method requires the use of a socket wrench tool to implement, but when the space where the leak hole needs to be sealed does not have space for the socket wrench to operate, the leak hole cannot be sealed and leak detection cannot be achieved. In addition, for sealing a large leak hole, the O-ring needs to generate a large amount of compression to tighten it, and the number of tightening turns of the corresponding nut and screw will increase, requiring a longer tightening time to achieve the purpose. Utility Model Content

[0005] The utility model aims to provide a leakage hole rapid tightening and plugging structure, which solves the problem that the existing leakage hole plugging structure generally adopts the method of tightening nuts and screws to produce axial movement, compresses the O-ring or rubber pad in the middle of the interlayer, so that it is difficult to seal the leakage hole in a narrow space without a wrench, and cannot quickly tighten and plug large leakage holes.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A leakage hole rapid tightening and plugging structure comprises a fixed sleeve, the outer diameter of the fixed sleeve is adapted to the inner diameter of the leakage hole, a tightening mandrel is slidably sleeved inside the fixed sleeve, the top of the tightening mandrel is connected to an eccentric wheel type pressure-lifting mechanism, the eccentric wheel type pressure-lifting mechanism is located outside the fixed sleeve, a limiting extrusion block is provided at the bottom of the tightening mandrel, an expansion ring structure is provided between the top surface of the limiting extrusion block and the bottom surface of the fixed sleeve, and O-rings are provided at the top and bottom of the expansion ring.

[0008] The original method of tightening the nut and screw structure to produce axial movement is changed to an eccentric wheel pressure-lifting mechanism. There is no need to use a socket wrench tool, and tightening can be achieved by turning a certain angle in a limited space. This kind of sealing is faster.

[0009] As a further preferred embodiment of the present invention, a limiting ring is provided on the top of the fixing sleeve, and the outer diameter of the limiting ring is larger than the diameter of the leakage hole.

[0010] As a further preferred embodiment of the present invention, the tensioning mandrel and the eccentric wheel type lifting and pressing mechanism are rotatably connected via a hinge pin.

[0011] As a further preferred embodiment of the utility model, the eccentric wheel type lifting and pressing mechanism includes a fixed sleeve handle, an eccentric cam and a cam handle, one side of the fixed sleeve handle is fixedly connected to the upper part of the outer wall of the fixed sleeve, the eccentric cam is rotatably connected to the bottom of the tensioning core shaft, one end of the cam handle is connected to the eccentric cam, and the cam handle is opposite to the fixed sleeve handle in the vertical direction.

[0012] The specific principle is as follows: rotate the cam handle counterclockwise around the hinge shaft of the eccentric cam by a certain angle to move the tensioning core shaft downward. At this time, the O-ring is not squeezed and is in the minimum outer diameter state. Then insert the fixed sleeve as a whole into the leakage hole to be blocked until the limit ring on the upper part of the fixed sleeve contacts and limits the leakage hole mouth. Then close the cam handle and the fixed sleeve handle and apply force to rotate the cam handle clockwise by a certain angle until it cannot rotate. In this process, the tensioning core shaft and the expansion sleeve ring squeeze the O-ring at the same time, so that the outer diameter of the O-ring increases to the same as the aperture diameter of the leakage hole. During the rotation of the cam handle, the O-ring increases the compression amount to generate a sufficiently large compression force, which is balanced with the air pressure in the internal oil channel to achieve a blocking effect. At this time, the cam handle rotates to the dead point to form a self-locking effect.

[0013] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects:

[0014] 1. The original nut and screw structure is tightened to produce axial movement, which is changed to an eccentric wheel type pressure-lifting mechanism. It does not require the use of a socket wrench tool, and can be tightened by turning a certain angle in a limited space.

[0015] 2. Blocking is faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 the present invention can be understood according to specific circumstances. Specific embodiment 1:

[0024] Figure 1A leakage hole rapid tightening and plugging structure is shown, comprising a fixed sleeve 1, the outer diameter of the fixed sleeve 1 is adapted to the inner diameter of the leakage hole, a tightening core shaft 2 is slidably sleeved inside the fixed sleeve 1, the top of the tightening core shaft 2 is connected to an eccentric wheel type lifting and pressing mechanism, the eccentric wheel type lifting and pressing mechanism is located outside the fixed sleeve 1, and a limiting extrusion block 3 is provided at the bottom of the tightening core shaft 2, an expansion ring 4 structure is provided between the top surface of the limiting extrusion block 3 and the bottom surface of the fixed sleeve 1, and O-rings 5 ​​are provided on the top and bottom of the expansion ring 4.

[0025] The original method of tightening the nut and screw structure to produce axial movement is changed to an eccentric wheel pressure-lifting mechanism. There is no need to use a socket wrench tool, and tightening can be achieved by turning a certain angle in a limited space. This kind of sealing is faster. Specific embodiment 2:

[0027] This embodiment further illustrates the fixing sleeve 1 on the basis of the specific embodiment 1. A limiting ring 6 is provided on the top of the fixing sleeve 1. The outer diameter of the limiting ring 6 is larger than the diameter of the leakage hole. Specific embodiment 3:

[0029] This embodiment further illustrates the tensioning mandrel 2 on the basis of the specific embodiment 1. The tensioning mandrel 2 is rotatably connected to the eccentric wheel type lifting and pressing mechanism via a hinge pin 7 . Specific embodiment 4:

[0031] This embodiment further illustrates the eccentric wheel type lifting and pressing mechanism on the basis of the specific embodiment 1. The eccentric wheel type lifting and pressing mechanism includes a fixed sleeve handle 8, an eccentric cam 9 and a cam handle 10. One side of the fixed sleeve handle 8 is fixedly connected to the upper part of the outer wall of the fixed sleeve 1, the eccentric cam 9 is rotatably connected to the bottom of the tensioning core shaft 1, and one end of the cam handle 10 is connected to the eccentric cam 9. The cam handle 10 is directly opposite to the fixed sleeve handle 8 in the vertical direction.

[0032] The specific principle is as follows: rotate the cam handle counterclockwise around the hinge shaft of the eccentric cam by a certain angle to move the tensioning core shaft downward. At this time, the O-ring is not squeezed and is in the minimum outer diameter state. Then insert the fixed sleeve as a whole into the leakage hole to be blocked until the limit ring on the upper part of the fixed sleeve contacts and limits the leakage hole mouth. Then close the cam handle and the fixed sleeve handle and apply force to rotate the cam handle clockwise by a certain angle until it cannot rotate. In this process, the tensioning core shaft and the expansion sleeve ring squeeze the O-ring at the same time, so that the outer diameter of the O-ring increases to the same as the aperture diameter of the leakage hole. During the rotation of the cam handle, the O-ring increases the compression amount to generate a sufficiently large compression force, which is balanced with the air pressure in the internal oil channel to achieve a blocking effect. At this time, the cam handle rotates to the dead point to form a self-locking effect.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A leak hole rapid tightening and plugging structure, characterized in that: The invention comprises a fixing sleeve (1), the outer diameter of the fixing sleeve (1) being matched with the inner diameter of the leakage hole, a tensioning mandrel (2) being slidably sleeved inside the fixing sleeve (1), the top of the tensioning mandrel (2) being connected with an eccentric wheel type lifting and pressing mechanism, the eccentric wheel type lifting and pressing mechanism being located outside the fixing sleeve (1), a limiting extrusion block (3) being provided at the bottom of the tensioning mandrel (2), an expansion ring (4) structure being provided between the top surface of the limiting extrusion block (3) and the bottom surface of the fixing sleeve (1), and O-rings (5) being provided at the top and bottom of the expansion ring (4).

2. The leak hole rapid tightening and plugging structure according to claim 1, characterized in that: A limiting ring (6) is provided on the top of the fixing sleeve (1), and the outer diameter of the limiting ring (6) is greater than the diameter of the leakage hole.

3. The leak hole rapid tightening and plugging structure according to claim 1, characterized in that: The tensioning mandrel (2) is rotatably connected to the eccentric wheel type lifting and pressing mechanism via a hinge pin (7).

4. The leak hole rapid tightening and plugging structure according to claim 1, characterized in that: The eccentric wheel type lifting and pressing mechanism comprises a fixed sleeve handle (8), an eccentric cam (9) and a cam handle (10); one side of the fixed sleeve handle (8) is fixedly connected to the upper part of the outer wall of the fixed sleeve (1); the eccentric cam (9) is rotatably connected to the bottom of the tensioning core shaft (2); one end of the cam handle (10) is connected to the eccentric cam (9); and the cam handle (10) is directly opposite to the fixed sleeve handle (8) in the vertical direction.

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