CN211763619U - Glass steel tube centering device - Google Patents

Abstract

The utility model discloses a centering device of a glass steel tube, which comprises a main shaft and a pull rod, wherein the pull rod is arranged in the main shaft in a penetrating way, one end of the main shaft is sleeved with a fixed expansion plug and a movable expansion plug which are coaxially arranged, the fixed expansion plug and the movable expansion plug are round platforms with hollow centers, an expansion sleeve is arranged between the fixed expansion plug and the movable expansion plug, the inner wall of the expansion sleeve is respectively matched with the side surfaces of the fixed expansion plug and the movable expansion plug, a movable groove is arranged on the expansion sleeve, the expansion sleeve is connected with the movable expansion plug through a connecting piece, one end of the connecting piece is fixed on the movable expansion plug, and the other end of the connecting piece is arranged in the movable; one end of the pull rod is connected with a tensioning oil cylinder, the other end of the pull rod is fixedly connected with a pull head, the pull head is connected with the movable expansion plug, the pull head can drive the pull rod to move along the axial direction, so that the movable expansion plug moves, and the movable expansion plug and the expansion sleeve are in conflict, so that the expansion sleeve can move along the radial direction.

Description

Glass steel tube centering device

Technical Field

The utility model relates to a non-metallic pipe is inside and outside the processing manufacturing field, especially relates to a glass steel pipe's centring means.

Background

The existing installation structure of the glass steel tube is a rubber ring compression tensioning structure, the glass steel tube is connected with a sleeve joint, and the mode has the defects of inaccurate positioning, insufficient clamping force and low precision of a machined part product. And a plurality of glass fiber reinforced plastic pipes are installed one by one and then pushed into the other pipeline. However, the sleeve joint is movably inserted into the glass fiber reinforced plastic pipe and flexibly sealed by rubber, so that the glass fiber reinforced plastic pipe and the sleeve joint are easy to move left and right in the process of installing and jacking the interface, the glass fiber reinforced plastic pipe is easy to exceed the top of the beam or the top of the glass fiber reinforced plastic pipe cannot reach the standard sealing position in the sleeve joint, the glass fiber reinforced plastic pipe is easy to pull out from the sleeve joint, the pipeline construction defect is caused, or whether the glass fiber reinforced plastic pipe exceeds or cannot reach the standard position is concerned at any moment, the construction time is prolonged, or the situations of water leakage rework and the like are caused. When the glass fiber reinforced plastic pipe is installed in another pipeline, the contact friction force between the outer surface of the bottom of the glass fiber reinforced plastic pipe and the inner wall of the outer pipeline is large, and if the inner bottom of the outer pipeline is uneven or a boss is arranged, the installation is difficult, and even the pipeline is damaged.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the utility model provides a glass steel tube's centring means that can solve above-mentioned technical problem.

The centering device for the glass reinforced plastic pipe comprises a main shaft and a pull rod, wherein the pull rod is arranged in the main shaft in a penetrating mode, one end of the main shaft is sleeved with a fixed expansion plug and a movable expansion plug which are coaxially arranged, the fixed expansion plug and the movable expansion plug are round tables with hollow middles, an expansion sleeve is arranged between the fixed expansion plug and the movable expansion plug, the inner wall of the expansion sleeve is respectively matched with the side faces of the fixed expansion plug and the movable expansion plug, a movable groove is formed in the expansion sleeve, the expansion sleeve is connected with the movable expansion plug through a connecting piece, one end of the connecting piece is fixed on the movable expansion plug, and the other end of the connecting piece is arranged in the movable groove;

one end of the pull rod is connected with a tensioning oil cylinder, the other end of the pull rod is fixedly connected with a pull head, the pull head is connected with the movable expansion plug, the pull head can drive the pull rod to move along the axial direction, so that the movable expansion plug moves, and the movable expansion plug and the expansion sleeve are in collision, so that the expansion sleeve can move along the radial direction.

Furthermore, the movable expansion plug and the fixed expansion plug are respectively provided with a bottom surface and a top surface, the diameter of the top surface is smaller than that of the bottom surface, and the top surfaces of the movable expansion plug and the fixed expansion plug are oppositely arranged.

Further, when the pull head drives the movable expansion plug to move away from the fixed expansion plug, the expansion sleeve is close to the main shaft along the radial direction; when the pull head drives the movable expansion plug to move close to the fixed expansion plug, the expansion sleeve is radially far away from the main shaft.

Further, the connecting piece adopts a set screw.

Further, the moving distance of the set screw is half of the stroke of the pull rod.

Furthermore, at least one elongated slot is arranged on the surface of the expansion sleeve, and the elongated slot is axially arranged to prevent stress concentration and increase elasticity.

Furthermore, the fixed expansion plug is fixed on the main shaft through a screw, and the movable expansion plug is fixed on the pull head through a screw.

Further, the spindle device also comprises a spindle seat, wherein the spindle seat is sleeved outside the spindle and used for fixing the spindle.

The utility model has the advantages as follows:

the movable expansion plug is abutted against the expansion sleeve by utilizing the movement of the movable expansion plug, so that the expansion sleeve is pushed to move along the radial direction, namely, the expansion sleeve expands outwards, the radius is increased, and the installation of the glass steel tube can be realized. The centering device of the glass reinforced plastic pipe is stable and reliable in structure, and can provide enough clamping force to install and fix the glass reinforced plastic pipe.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a centering device for a FRP pipe according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a centering device of a glass reinforced plastic pipe in an embodiment of the present invention.

Reference numerals of the above figures: a main shaft-1; a spindle seat-11; a pull rod-2; fixing an expansion plug-3; a movable expansion plug-4; connecting piece-41; a first bevel-42; an expansion sleeve-5; a movable groove-51; a second bevel-52; elongated slot-53; a slider-6; tensioning the oil cylinder-7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

To achieve the above object, the present invention provides a centering device for a glass fiber reinforced plastic pipe, as shown in fig. 1 and 2. The centering device of the glass reinforced plastic pipe comprises a main shaft 1, a pull rod 2 and a main shaft seat 11, wherein the main shaft seat 11 is sleeved outside part of the main shaft 1 and used for fixing the main shaft 1. The pull rod 2 is arranged in the main shaft 1 in a penetrating mode. One end of the main shaft 1 is sleeved with a fixed expansion plug 3 and a movable expansion plug 4 which are coaxially arranged, the movable expansion plug 4 is arranged at the end part of the pull rod 2, and the fixed expansion plug 3 is arranged between the movable expansion plug 4 and the main shaft 1 seat. The fixed expansion plug 3 is fixed on the main shaft 1 through a screw. The fixed expansion plug 3 and the movable expansion plug 4 are round tables with hollow middle parts, and as shown in fig. 2, the side surfaces of the fixed expansion plug 3 and the movable expansion plug 4 are first inclined surfaces 42. An expansion sleeve 5 is arranged between the fixed expansion plug 3 and the movable expansion plug 4, the inner wall of the expansion sleeve 5 is respectively matched with the side surfaces of the fixed expansion plug 3 and the movable expansion plug 4, a movable groove 51 is arranged on the expansion sleeve 5, and the expansion sleeve 5 is connected with the movable expansion plug 4 through a connecting piece 41. One end of the connecting piece 41 is fixed on the movable expansion plug 4, the other end of the connecting piece 41 is arranged in the movable groove 51, and the connecting piece 41 can move in the movable groove 51;

one end of the pull rod 2 is connected with a tensioning oil cylinder 7, the other end of the pull rod 2 is fixedly connected with a pull head 6, and the pull head 6 is connected with the movable expansion plug 4 through a screw. The pull head 6 can drive the pull rod 2 to move along the axial direction, so that the movable expansion plug 4 moves, and the movable expansion plug 4 collides with the expansion sleeve 5, so that the expansion sleeve 5 can move along the radial direction.

In this embodiment, the movable expansion plug 4 is moved to make the movable expansion plug 4 collide with the expansion sleeve 5, so as to push the expansion sleeve 5 to move in a radial direction, that is, the expansion sleeve 5 expands outwards, and the radius is increased, thereby realizing the installation of the glass reinforced plastic pipe. The centering device of the glass reinforced plastic pipe is stable and reliable in structure, and can provide enough clamping force to install and fix the glass reinforced plastic pipe.

Preferably, the movable expansion plug 4 and the fixed expansion plug 3 respectively have a bottom surface and a top surface, the diameter of the top surface is smaller than that of the bottom surface, and the top surfaces of the movable expansion plug 4 and the fixed expansion plug 3 are oppositely arranged, so that the first inclined surface 42 of the movable expansion plug 4 and the fixed expansion plug 3 becomes smaller and smaller from the bottom surface to the top surface along the radial direction. The expansion sleeve 5 is a tubular body which is coaxial with the pull rod 2, the outer wall of the expansion sleeve 5 is a circumferential surface, and the inner wall of the expansion sleeve 5 is provided with a plurality of side walls. Specifically, the inner wall of the expansion sleeve 5 has a second inclined surface 52 respectively engaged with the movable expansion plug 4 and the fixed expansion plug 3.

When the slider 6 drives the movable expansion plug 4 to move away from the fixed expansion plug 3, a gap exists between the first inclined surface 42 and the second inclined surface 52, so that the expansion sleeve 5 is close to the main shaft 1 along the radial direction; when the slider 6 drives the movable expansion plug 4 to move close to the fixed expansion plug 3, the first inclined surface 42 gives an acting force to the second inclined surface 52 to push the expansion sleeve 5 to be away from the main shaft 1 along the radial direction.

The utility model discloses only need utilize the pulling pull head 6 just can accomplish the harmomegathus of cover 5 rises, consequently very convenient simple with the dismantlement to FRP pipe's installation.

Further, in the present embodiment, the connecting member 41 is a set screw. The moving distance of the set screw is half of the stroke of the pull rod 2. The movable groove 51 and the connecting piece 41 realize the linkage of the expansion sleeve 5 and the movable expansion plug 4, so that the expansion sleeve 5 can be prevented from falling off and the expansion and contraction stroke of the expansion sleeve 5 can be restrained, and the expansion and contraction device is more reliable. In this embodiment, the connecting members 41 are provided in plurality and uniformly distributed in correspondence with the movable grooves 51.

Further, at least one long groove 53 is arranged on the surface of the expansion sleeve 5, and the long groove 53 is arranged along the axial direction to prevent stress concentration and increase elasticity.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (8)

1. The centering device of the glass reinforced plastic pipe is characterized by comprising a main shaft and a pull rod, wherein the pull rod is arranged in the main shaft in a penetrating mode, one end of the main shaft is sleeved with a fixed expansion plug and a movable expansion plug which are coaxially arranged, the fixed expansion plug and the movable expansion plug are round tables with hollow middle parts, an expansion sleeve is arranged between the fixed expansion plug and the movable expansion plug, the inner wall of the expansion sleeve is respectively matched with the side surfaces of the fixed expansion plug and the movable expansion plug, a movable groove is formed in the expansion sleeve, the expansion sleeve is connected with the movable expansion plug through a connecting piece, one end of the connecting piece is fixed on the movable expansion plug, and the other end of the connecting piece is arranged in the movable groove;

one end of the pull rod is connected with a tensioning oil cylinder, the other end of the pull rod is fixedly connected with a pull head, the pull head is connected with the movable expansion plug, the pull head can drive the pull rod to move along the axial direction, so that the movable expansion plug moves, and the movable expansion plug and the expansion sleeve are in collision, so that the expansion sleeve can move along the radial direction.

2. The apparatus of claim 1, wherein the movable plug and the fixed plug have a bottom surface and a top surface, respectively, the top surface has a smaller diameter than the bottom surface, and the top surfaces of the movable plug and the fixed plug are opposite to each other.

3. The centering device for the FRP pipe as claimed in claim 2, wherein when the pulling head drives the movable expansion plug to move away from the fixed expansion plug, the expansion sleeve is close to the main shaft along the radial direction; when the pull head drives the movable expansion plug to move close to the fixed expansion plug, the expansion sleeve is radially far away from the main shaft.

4. The apparatus of claim 3, wherein the connector is a set screw.

5. The apparatus of claim 4, wherein the set screw moves by a distance equal to half of the stroke of the pulling rod.

6. The apparatus as claimed in claim 5, wherein the expansion sleeve has at least one elongated groove formed on a surface thereof, the elongated groove being axially disposed to prevent stress concentration and to increase elasticity.

7. The centering device of claim 6, wherein said fixed expansion plug is fixed to said main shaft by a screw, and said movable expansion plug is fixed to said pulling head by a screw.

8. The apparatus of claim 7, further comprising a spindle base, wherein the spindle base is disposed outside the spindle for fixing the spindle.

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