Pipeline concentric fixing device

Abstract

The utility model discloses a pipeline concentric fixing device, and relates to the technical field of pipeline concentricity adjustment, an outer sleeve is vertically arranged on a floor in a penetrating manner, a bottom die is arranged at the bottom end of the outer sleeve, and an inner pipe with the outer diameter smaller than the inner diameter of the outer sleeve is arranged in the outer sleeve in a penetrating manner; comprising an adjusting device used for adjusting the concentricity of an inner pipe and an outer sleeve, the adjusting device comprises a hose clamp matched with the inner pipe and at least three adjusting blocks, and a hoop belt of the hose clamp is enclosed to form a circular ring; the three adjusting blocks are arranged on the inner side wall of the circular ring in an annular array mode. Any adjusting block is of a telescopic structure, and a prompting mechanism and a centering mechanism are arranged in any adjusting block. The hose clamp, the three adjusting blocks, the prompting mechanism and the centering mechanism are used in cooperation, the concentricity between the inner pipe installed in the outer sleeve and the outer sleeve can be adjusted, the inner pipe installed on a floor is in a vertical state, and the attractiveness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline concentricity adjustment, and particularly relates to a pipeline concentric fixing device. Background Art

[0002] When installing a pipeline on a floor slab, if the construction requirement is that the pipeline is vertically installed on the floor slab, tools are needed to adjust the verticality of the pipeline during installation, and the pipeline fixing work is carried out only after the verticality is adjusted.

[0003] One way to vertically install a pipeline on a floor slab in the prior art is as follows: First, a through hole with a diameter larger than that of the pipeline is processed on the floor slab, then an outer sleeve is installed in the through hole, and then a bottom mold is installed at the bottom end of the outer sleeve. After the two are installed, the pipeline is inserted into the outer sleeve and passes through the bottom mold. At this time, the annular groove formed by the inner side wall of the outer sleeve, the outer side wall of the pipeline, and the upper surface of the bottom mold is the chamber for accommodating the poured concrete. After the concrete is poured into this chamber and gradually solidifies, the pipeline is installed in the outer sleeve after solidification (the pipeline is installed on the floor slab).

[0004] However, after the pipeline is vertically installed on the floor slab by the above method, if the pipeline is offset due to reasons such as inappropriate size of the hole on the floor slab, uneven hole plugging formwork, and extrusion of the filling material during plugging, resulting in a large concentricity accuracy error between the pipeline and the outer sleeve, the appearance after pipeline installation will be poor.

[0005] Therefore, a pipeline concentric fixing device is proposed. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a pipeline concentric fixing device.

[0007] The purpose of the utility model is achieved by the following technical solutions:

[0008] A pipeline concentric fixing device includes an outer sleeve vertically penetrating through a floor slab and a bottom mold arranged at the bottom end of the outer sleeve, and an inner pipe with an outer diameter smaller than the inner diameter of the outer sleeve is arranged inside the outer sleeve; it includes an adjusting device for adjusting the concentricity of the inner pipe and the outer sleeve, the adjusting device includes a hose clamp adapted to the inner pipe and at least three adjusting blocks, the hoop band of the hose clamp encloses to form a ring; the three adjusting blocks are arranged in an annular array on the inner side wall of the ring; any of the adjusting blocks is a telescopic structure, and a prompting mechanism and a centering mechanism are arranged inside any of the adjusting blocks.

[0009] Furthermore, in the present utility model, any of the above adjustment blocks includes a rigid plate disposed on the inner sidewall of the above-mentioned ring and a flexible plate connected to the rigid plate. The flexible plate is disposed on a side of the rigid plate away from the inner sidewall of the ring; both the above-mentioned prompting mechanism and the above-mentioned centering mechanism are disposed within the rigid plate and the flexible plate.

[0010] Furthermore, in the present utility model, a first through-hole is formed on the flexible plate, and the central axis of the first through-hole is perpendicular to the central axis of the above-mentioned ring; a counterbore with a central axis collinear with the central axis of the first through-hole is formed on the rigid plate; the prompting mechanism includes an alarm lamp, a static contact, and a moving contact that can form a circuit. Both the static contact and the moving contact are electrically connected to the alarm lamp; the static contact is disposed within the counterbore, the moving contact is disposed within the through-hole, and there is a spacing between their contact ends.

[0011] Furthermore, in the present utility model, two second through-holes with collinear central axes are formed on the flexible plate, and the central axes of the second through-holes are perpendicular to the central axis of the above-mentioned ring; the centering mechanism includes a telescopic rod fixedly connected to the flexible plate and a spring sleeved on the telescopic rod. The telescopic rod is disposed within the second through-hole; a limiting plate is provided at one end of the telescopic rod away from the rigid plate, and a pushing cap is provided at one end of the telescopic rod away from the flexible plate; one end of the spring is connected to the limiting plate, and the other end is connected to the pushing cap; the pushing cap can pass through the above-mentioned ring.

[0012] The beneficial effects of the present utility model are as follows:

[0013] The present utility model provides a pipeline concentric fixing device. The hose clamp, three adjustment blocks, the prompting mechanism, and the centering mechanism are used in cooperation to adjust the concentricity between the inner pipe installed within the outer sleeve and the outer sleeve, enabling the inner pipe installed on the floor slab to be in a vertical state and improving the aesthetics. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0015] Figure 2 is Figure 1 the top view of

[0016] Figure 3 is Figure 2 the cross-sectional view taken along the A-A section in

[0017] Figure 4 is Figure 3 the partial enlarged view at B in

[0018] In the figure: 101 - floor slab; 201 - outer sleeve; 301 - bottom formwork; 401 - inner pipe; 501 - hose clamp; 502 - adjustment block; 5021 - rigid plate; 5022 - flexible plate; 601 - static contact; 602 - moving contact; 701 - telescopic rod; 702 - spring; 703 - limit plate; 704 - push cap. Detailed implementation manners

[0019] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0021] A pipe concentric fixing device includes an outer sleeve 201 vertically penetrating through a floor slab 101 and a bottom formwork 301 arranged at the bottom end of the outer sleeve 201. An inner pipe 401 with an outer diameter smaller than the inner diameter of the outer sleeve 201 is arranged inside the outer sleeve 201; it includes an adjustment device for adjusting the concentricity of the inner pipe 401 and the outer sleeve 201. The adjustment device includes a hose clamp 501 adapted to the inner pipe 401 and at least three adjustment blocks 502. The hoop of the hose clamp 501 encloses to form a ring; the three adjustment blocks 502 are arranged in a circular array on the inner side wall of the ring; any adjustment block 502 is a telescopic structure, and a prompting mechanism and a centering mechanism are arranged inside any adjustment block 502.

[0022] Specifically, any adjustment block 502 includes a rigid plate 5021 arranged on the inner side wall of the ring and a flexible plate 5022 connected to the rigid plate 5021. The flexible plate 5022 is arranged on the side of the rigid plate 5021 away from the inner side wall of the ring; the prompting mechanism and the centering mechanism are both arranged inside the rigid plate 5021 and the flexible plate 5022.

[0023] Specifically, in order to install the prompting mechanism, a first through hole is opened on the flexible plate 5022, and the central axis of the first through hole is perpendicular to the central axis of the ring; a counterbore with a central axis collinear with the central axis of the first through hole is opened on the rigid plate 5021; the prompting mechanism includes an alarm lamp (not shown in the figure) that can form a circuit, a static contact 601, and a moving contact 602. The static contact 601 and the alarm lamp, and the moving contact 602 and the alarm lamp are both electrically connected; the static contact 601 is arranged in the counterbore, the moving contact 602 is arranged in the through hole, and there is a spacing between their contact ends.

[0024] Specifically, in order to install the centering mechanism, two second through-holes with collinear central axes are formed in the flexible plate 5022, and the central axes of the second through-holes are perpendicular to the central axis of the ring; the centering mechanism includes a telescopic rod 701 fixedly connected to the flexible plate 5022 and a spring 702 sleeved on the telescopic rod 701, and the telescopic rod 701 is arranged in the second through-hole; a limiting plate 703 is arranged at one end of the telescopic rod 701 away from the rigid plate 5021, and a push cap 704 is arranged at one end of the telescopic rod 701 away from the flexible plate 5022; one end of the spring 702 is connected to the limiting plate 703, and the other end is connected to the push cap 704; the push cap 704 can pass through the ring.

[0025] Working principle:

[0026] Before fixing the inner tube 401 in the outer tube 201, first install the inner tube 401 in the outer tube 201, and then install the bottom mold 301. As Figure 3 shown, the annular groove formed by enclosing the inner side wall of the outer tube 201, the outer side wall of the inner tube 401, and the upper surface of the bottom mold 301 is the chamber for accommodating the poured concrete. After the concrete solidifies, the inner tube 401 is installed in the outer tube 201 (the inner tube 401 is installed on the floor slab 101).

[0027] Before pouring, it is necessary to use the adjustment device to adjust the concentricity of the inner tube 401 and the outer tube 201. The specific adjustment method is as follows:

[0028] First, "open" the hose clamp 501 so that the diameter of the ring formed by the hoop of the hose clamp 501 is larger than the outer diameter of the inner tube 401. Then, sleeve the hose clamp 501 on the inner tube 401 and move it downward to the upper end of the outer tube 201, and make a part of the hoop located inside the outer tube 201. Then, operate the locking member of the hose clamp 501 to slowly tighten the hoop of the hose clamp 501. During this process, the diameter of the ring formed by the hoop of the hose clamp 501 gradually decreases. During the process of slowly tightening the hoop, one side of the three flexible plates 5022 will gradually abut against the outer side wall of the inner tube 401. After the three flexible plates 5022 all abut against the outer side wall of the inner tube 401, continue to operate the locking member of the hose clamp 501 to further tighten the hoop of the hose clamp 501. During this process, the thickness of the three flexible plates 5022 gradually thins under pressure, and at the same time, the three moving contacts 602 move towards the three static contacts 601 respectively. When the contact ends of the three moving contacts 602 respectively abut against the contact ends of the three static contacts 601, the warning lights, static contacts 601, and moving contacts 602 on the three adjusting blocks 502 respectively form a circuit. At this time, the three warning lights are on, indicating that the hoop has been tightened in place. At this time, stop operating the locking member of the hose clamp 501, and the adjustment device can no longer move up and down on the inner tube 401.

[0029] During the process that the three flexible plates 5022 are thinned under pressure respectively, the three telescopic rods 701 move towards the outer sleeve 201 respectively. During this process, the three springs 702 are all in a compressed state until the three push caps 704 are respectively abutted against the inner side wall of the outer sleeve 201. After the three push caps 704 are all abutted against the inner side wall of the outer sleeve 201, the three flexible plates 5022 are also in close contact with the outer side wall of the inner tube 401. At this time, the three springs 702 come into play. The elastic forces of the three springs 702 cause the three adjusting blocks 502 to tend to move towards the inner tube 401. The movement of the three adjusting blocks 502 "pushes" the inner tube 401, causing the inner tube 401 to move towards the center of the outer sleeve 201 until the three springs 702 are in a balanced state. At this time, the central axis of the inner tube 401 is collinear with the central axis of the outer sleeve 201, and the concentricity of the two is adjusted in place. Then, concrete can be poured into the annular groove formed by enclosing the inner side wall of the outer sleeve 201, the outer side wall of the inner tube 401 and the upper surface of the bottom mold 301.

[0030] The above are only the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the techniques or knowledge in related fields. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A concentric pipe fixing device, wherein an outer sleeve (201) is vertically passed through a floor slab (101), a bottom mold (301) is provided at the bottom end of the outer sleeve (201), and an inner pipe (401) having an outer diameter smaller than an inner diameter of the outer sleeve (201) is passed through the outer sleeve (201); the characteristics are: The invention comprises an adjustment device for adjusting the concentricity of the inner tube (401) and the outer tube (201), the adjustment device comprising a throat clamp (501) adapted to the inner tube (401) and at least three adjustment blocks (502), the throat clamp (501) being enclosed to form a circular ring; the three adjustment blocks (502) being arranged in a circular array on the inner side wall of the circular ring; any of the adjustment blocks (502) being a telescopic structure, and any of the adjustment blocks (502) being provided with a prompting mechanism and a centering mechanism.

2. A concentric pipe fixing device according to claim 1, characterized in that: Any of the adjustment blocks (502) comprises a rigid plate (5021) arranged on the inner side wall of the circular ring and a flexible plate (5022) connected to the rigid plate (5021), wherein the flexible plate (5022) is arranged on a side of the rigid plate (5021) away from the inner side wall of the circular ring; the prompt mechanism and the centering mechanism are both arranged in the rigid plate (5021) and the flexible plate (5022).

3. A concentric pipe fixing device according to claim 2, characterized in that: The flexible plate (5022) is provided with a first through hole, the central axis of which is perpendicular to the central axis of the circular ring; the rigid plate (5021) is provided with a countersunk hole, the central axis of which is colinear with the central axis of the first through hole; the prompt mechanism comprises an alarm light, a stationary contact (601) and a moving contact (602) which can form a passage, the stationary contact (601) and the alarm light, and the moving contact (602) and the alarm light are electrically connected; the stationary contact (601) is arranged in the countersunk hole, and the moving contact (602) is arranged in the through hole, and there is a spacing between the contact ends of the two.

4. A concentric pipe fixing device according to claim 3, characterized in that: The flexible plate (5022) is provided with two second through holes whose central axes are colinear, and the central axes of the second through holes are perpendicular to the central axis of the circular ring; the centering mechanism comprises a telescopic rod (701) fixedly connected to the flexible plate (5022) and a spring (702) sleeved on the telescopic rod (701), and the telescopic rod (701) is arranged in the second through hole; a limiting plate (703) is arranged at one end of the telescopic rod (701) away from the rigid plate (5021), and a push cap (704) is arranged at one end of the telescopic rod (701) away from the flexible plate (5022); one end of the spring (702) is connected to the limiting plate (703), and the other end is connected to the push cap (704); the push cap (704) can pass through the circular ring.

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