Casing pipe reserved hole-forming device for concrete structure

Abstract

The utility model discloses a casing pipe reserved hole-forming device for a concrete structure, which belongs to the technical field of concrete construction, after a supporting and plugging structure is coaxially arranged in an inner cavity of a casing pipe in a penetrating manner, a left disc and a right disc plug a left end opening and a right end opening of the casing pipe, so that concrete can be prevented from entering the inner cavity of the casing pipe, and in addition, the casing pipe reserved hole-forming device is convenient to use. The left end and the right end of the sleeve are tightly attached to the inner sides of the two opposite formworks, displacement and twisting of the hole forming device during pouring can be prevented, after the supporting and plugging structure is taken out, the sleeve embedded in the beam or wall structure does not need to be cleaned secondarily, and the supporting and plugging structure can be repeatedly used.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete construction, and in particular relates to a casing pre-drilling device for a concrete structure. Background Art

[0002] During the construction of concrete structures, in order to meet the subsequent installation requirements of air-conditioning pipes, water and electricity pipes, etc. passing through walls and beams, it is necessary to reserve holes in the beams or walls of the concrete structure for the air-conditioning pipes and water and electricity pipes to pass through.

[0003] To this end, traditionally, a sleeve is installed where a hole is required in the beam or wall to form a hole after pouring. If the sleeve is not installed firmly enough, during the concrete pouring process, the sleeve is affected by the impact and vibration of the concrete falling, and the sleeve is prone to displacement and twisting, which may cause the failure to successfully form a hole in the beam or wall after the pouring is completed. In addition, in order to prevent the concrete from clogging the two ends of the embedded sleeve during pouring, the two ends of the sleeve are first sealed with tape. The tape is not firmly sealed, and the two ends of the sleeve are still easy to penetrate into the concrete slurry. There is also a risk of damage when the tape is subjected to greater pressure, so that the concrete is poured into the sleeve and blocks the sleeve, which requires manual cleaning of the concrete poured into the sleeve, which increases the subsequent hole cleaning work. Utility Model Content

[0004] In view of this, the utility model provides a sleeve pre-hole forming device for concrete structures, which solves the problem that the sleeve is easily displaced and twisted when the traditional method of simply installing a sleeve to form a reserved hole during concrete pouring may result in the failure to successfully form a hole in the beam or wall after the pouring is completed, and the concrete slurry is still easily infiltrated at both ends of the sleeve, increasing the subsequent hole cleaning work.

[0005] The utility model adopts the following technical solutions:

[0006] A casing pre-drilling device for a concrete structure, comprising a casing and a supporting and blocking structure for supporting and blocking openings at both ends of the casing;

[0007] The supporting and blocking structure comprises a central rod, a left circular disc and a right circular disc; the left circular disc and the right circular disc are coaxially fixedly installed at the left end and the right end of the central rod at a set distance; the left end of the central rod passes through the left circular disc and the right circular disc and extends outward to form a left fixed end and a right fixed end respectively;

[0008] When the supporting and blocking structure is coaxially inserted into the inner cavity of the sleeve, the outer circumferences of the left and right circular disks fit with the inner wall of the sleeve to support the sleeve, and the left and right circular disks block the left and right end openings of the sleeve.

[0009] Furthermore, the right fixed end is provided with an external thread.

[0010] Furthermore, it also includes a diagonal brace rod for reinforcing and fixing the positions of the left disk and the right disk on the center rod;

[0011] One end of the diagonal brace for reinforcing and fixing the left disk is fixed to the central rod, and the other end is fixed to the right side surface of the left disk;

[0012] One end of the diagonal support rod for reinforcing and fixing the right disk is fixed to the central rod, and the other end is fixed to the left side surface of the right disk.

[0013] Furthermore, it also includes a rod remover for pulling the supporting and blocking structure out of the casing;

[0014] The rod remover includes a base, a pull rod, a threaded sleeve and a handle; the pull rod support is installed on the base; the threaded sleeve is fixed to the front end of the pull rod, and the threaded sleeve is provided with an internal thread that cooperates with the external thread on the right fixed end; the handle is fixed to the rear end of the pull rod.

[0015] Further, the base includes a left support frame and a right support plate;

[0016] The left support frame is fixedly arranged at the left end of the base;

[0017] The right support plate is fixedly arranged at the right end of the base, and the right support plate is provided with a through hole;

[0018] The pull rod is passed through the through hole on the right support plate, and when the threaded sleeve is threadedly matched with the external thread on the right fixed end, the front end of the pull rod can pass through the left support frame.

[0019] Furthermore, the pull rod is provided with an external thread;

[0020] The rod remover also includes a nut; the nut is threadedly connected to the pull rod, and the nut is located in the pull rod section between the handle and the right support plate.

[0021] Furthermore, the base is a triangular prism structure;

[0022] The left support frame is a triangular frame structure, the right support plate is a triangular plate structure, and the planes where the left support frame and the right support plate are located are parallel.

[0023] Furthermore, the base is welded from steel bars.

[0024] Beneficial effects:

[0025] 1. The casing pre-hole forming device for concrete structure comprises a casing and a supporting and blocking structure for supporting and blocking openings at both ends of the casing; the supporting and blocking structure comprises a center rod, a left disc and a right disc; the left disc and the right disc are coaxially fixedly installed on the left end and the right end of the center rod at a set distance; the left end of the center rod passes through the left disc and the right disc and extends outward to form a left fixed end and a right fixed end respectively; when the supporting and blocking structure is coaxially penetrated into the inner cavity of the casing, the outer circumference of the left disc and the right disc fits with the inner wall of the casing to support the casing, and the left disc and the right disc block the left and right end openings of the casing.

[0026] Thus, compared with the conventional method of only setting one sleeve without other structures, in the hole-forming device provided by the utility model, after the support and plugging structure is coaxially inserted into the inner cavity of the sleeve, the left and right discs form plugging for the left and right openings of the sleeve, which can prevent concrete from entering the inner cavity of the sleeve. Moreover, since a template is set when the beam is cast or the wall is cast, a through hole can be set on the template, so that the left fixed end and the right fixed end are fixed to the outer side of the template after passing through the through hole set on the template, and the left and right ends of the sleeve are close to the inner side of two opposite templates (the inner side of the template is cast with concrete to form a beam or wall), thereby preventing the hole-forming device from displacement and twisting during casting. After the template is subsequently removed, the support and plugging structure is pulled out of the sleeve, thereby forming a reserved hole in the beam or wall, which can meet the installation requirements of air conditioning pipes, water and electricity pipes, etc. Moreover, after the support and plugging structure is taken out, there is no need to perform secondary cleaning on the sleeve buried in the beam or wall structure, and the support and plugging structure can be reused.

[0027] 2. An external thread is provided on the right fixed end, so that the external thread on the right fixed end of the center rod can be matched with the external thread by means of an external device, and then the supporting and blocking structure can be conveniently pulled out from the casing by means of the external device.

[0028] 3. The rod remover includes a base, a pull rod, a threaded sleeve and a handle, wherein the pull rod support is installed on the base, the threaded sleeve is fixed at the front end of the pull rod, and the threaded sleeve is provided with an internal thread that matches the external thread on the right fixed end; the handle is fixed at the rear end of the pull rod.

[0029] In this way, when the supporting sealing structure is to be pulled out from the casing, the threaded casing can be matched with the external thread on the right fixed end, and then the supporting sealing structure can be easily pulled out from the casing with the help of the handle on the pull rod. The rod remover has a simple and compact structure and is easy and convenient to operate.

[0030] 4. The pull rod is provided with an external thread, and the rod remover further comprises a nut, which is threadedly connected to the pull rod, and the nut is located in the pull rod section between the handle and the right support plate.

[0031] In this way, when the supporting plugging structure is to be pulled out from the casing, the left supporting frame of the base can be pressed against the poured concrete surface first, and then the threaded casing can be matched with the external thread on the right fixed end, and the threaded casing and the external thread on the right fixed end can be further tightened by tightening the nut to prevent the tie rod from being separated from the center rod, and finally the tie rod can be pulled out by the handle after loosening the nut with a wrench. The additional nut can tighten the threaded casing and the external thread on the right fixed end more tightly by tightening the nut, preventing the tie rod from being separated from the center rod, and making the rod remover more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the support and blocking structure provided by the utility model;

[0033] Figure 2 A front view of the rod remover provided by the utility model;

[0034] Figure 3 A top view of the rod remover provided by the utility model;

[0035] Among them, 1-center rod, 2-left disc, 3-diagonal support rod, 4-right fixed end, 5-right disc, 6-left support frame, 7-threaded sleeve, 8-side support column, 9-pull rod, 10-right support plate, 11-nut, 12-handle. DETAILED DESCRIPTION

[0036] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0037] Embodiment 1:

[0038] Reference Figure 1 A casing pre-drilling device for concrete structure (hereinafter referred to as the drilling device) comprises a casing (not shown in the figure) and a supporting and sealing structure for supporting and sealing the openings at both ends of the casing; the supporting and sealing structure comprises a center rod 1, a left disc 2, and a right disc 5; the left disc 2 and the right disc 5 are coaxially fixedly installed on the left end and the right end of the center rod 1 at a set distance; the left end of the center rod 1 passes through the left disc 2 and the right disc 5 and extends outward to form a left fixed end and a right fixed end 4 respectively; when the supporting and sealing structure is coaxially penetrated into the inner cavity of the casing, the outer circumference of the left disc 2 and the right disc 5 fits with the inner wall of the casing to support the casing, and the left disc 2 and the right disc 5 seal the left and right end openings of the casing.

[0039] Thus, compared with the conventional method of only setting one sleeve without other structures, in the hole-forming device provided by the utility model, after the support and plugging structure is coaxially inserted into the inner cavity of the sleeve, the left disc 2 and the right disc 5 form a plugging for the left and right openings of the sleeve, which can prevent concrete from entering the inner cavity of the sleeve. Moreover, since a template will be set when the beam is cast or the wall is cast, a through hole can be set on the template, so that the left fixed end and the right fixed end 4 pass through the through hole set on the template and are fixed to the outer side of the template, and the left and right ends of the sleeve are close to the inner side of two opposite templates (the inner side of the template is cast with concrete to form a beam or wall), thereby preventing the hole-forming device from displacement and twisting during casting. After the template is subsequently removed, the support and plugging structure is pulled out of the sleeve, thereby forming a reserved hole in the beam or wall, which can meet the installation requirements of air conditioning pipes, water and electricity pipes, etc. Moreover, after the support and plugging structure is taken out, there is no need to perform secondary cleaning on the sleeve buried in the beam or wall structure, and the support and plugging structure can be reused.

[0040] Consider such a scenario, for example, such a hole at the gable position, it is not easy to knock the center rod 1 from the outside of the template to make the supporting sealing structure fall out of the sleeve, and for the sake of structural simplicity and avoiding interference, the length of the left fixed end and the right fixed end 4 extending from the left disc 2 and the right disc 5 will not be too long. At this time, it is difficult to pull the supporting sealing structure out of the sleeve by hand. In this embodiment, as an optimization, an external thread is provided on the right fixed end 4, so that the external thread on the right fixed end 4 of the center rod 1 can be first matched with the external thread with the help of an external device, and then the supporting sealing structure can be conveniently pulled out of the sleeve with the help of the external device.

[0041] Specifically, refer to Figure 1 In this embodiment, it also includes an oblique support rod 3 for reinforcing and fixing the positions of the left and right discs on the center rod 1; one end of the oblique support rod 3 for reinforcing the fixation of the left disc 2 is fixed to the center rod 1, and the other end is fixed to the right side surface of the left disc 2; one end of the oblique support rod 3 for reinforcing the fixation of the right disc 5 is fixed to the center rod 1, and the other end is fixed to the left side surface of the right disc 5.

[0042] Embodiment 2:

[0043] On the basis of the first embodiment, this embodiment provides a rod remover for pulling the supporting and blocking structure out of the casing.

[0044] Reference Figure 2 and Figure 3 The rod remover includes a base, a pull rod 9, a threaded sleeve 7 and a handle 12, wherein the pull rod 9 is supported and installed on the base, the threaded sleeve 7 is fixed at the front end of the pull rod 9, and the threaded sleeve 7 is provided with an internal thread that matches the external thread on the right fixed end 4; the handle 12 is fixed at the rear end of the pull rod 9.

[0045] In this way, when the supporting sealing structure is to be pulled out from the sleeve, the threaded sleeve 7 can be matched with the external thread on the right fixed end 4, and then the supporting sealing structure can be easily pulled out from the sleeve with the help of the handle 12 on the pull rod 9. The rod remover has a simple and compact structure and is easy and convenient to operate.

[0046] Specifically, in this embodiment, the base includes a left support frame 6 and a right support plate 10, the left support frame 6 is fixedly arranged at the left end of the base; the right support plate 10 is fixedly arranged at the right end of the base, and the right support plate 10 is provided with a through hole; the pull rod 9 is passed through the through hole on the right support plate 10, and when the threaded sleeve 7 is threadedly matched with the external thread on the right fixed end 4, the front end of the pull rod 9 can pass through the left support frame 6. The base structure is simple and compact.

[0047] More specifically, in this embodiment, the base is a triangular prism structure formed by welding three parallel side support columns 8, a left support frame 6, and a right support plate 10, wherein the left support frame 6 is a triangular frame structure, the right support plate 10 is a triangular plate structure, and the planes where the left support frame 6 and the right support plate 10 are located are parallel.

[0048] As an optimization, the pull rod 9 is provided with an external thread, and the rod remover also includes a nut 11, which is threadedly connected to the pull rod 9, and the nut 11 is located in the pull rod section between the handle 12 and the right support plate 10. In this way, when the support and blocking structure is to be pulled out from the sleeve, the left support frame 6 of the base can be pressed against the poured concrete surface first, and then the threaded sleeve can be matched with the external thread on the right fixed end 4, and the threaded sleeve can be further tightened with the external thread on the right fixed end by tightening the nut 11 to prevent the pull rod 9 from being separated from the center rod 1, and finally, the nut 11 can be loosened with a wrench and then the pull rod 9 can be pulled out by the handle 12 to pull out the hole-forming device. The addition of the nut 11 can make the threaded sleeve 7 and the external thread on the right fixed end 4 tighter by tightening the nut 11, prevent the pull rod 9 from being separated from the center rod 1, and make the rod remover more reliable.

[0049] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A casing pre-drilling device for concrete structure, characterized in that: It comprises a sleeve and a supporting and blocking structure for supporting and blocking openings at both ends of the sleeve; The supporting and blocking structure comprises a central rod, a left circular disc and a right circular disc; the left circular disc and the right circular disc are coaxially fixedly installed at the left end and the right end of the central rod at a set distance; the left end of the central rod passes through the left circular disc and the right circular disc and extends outward to form a left fixed end and a right fixed end respectively; When the supporting and blocking structure is coaxially inserted into the inner cavity of the sleeve, the outer circumferences of the left and right circular disks fit with the inner wall of the sleeve to support the sleeve, and the left and right circular disks block the left and right end openings of the sleeve.

2. A casing pre-drilling device for concrete structure according to claim 1, characterized in that: The right fixed end is provided with an external thread.

3. The casing pre-drilling device for concrete structure according to claim 1, characterized in that: Also included is a diagonal brace for reinforcing and fixing the positions of the left disk and the right disk on the center rod; One end of the diagonal brace for reinforcing and fixing the left disk is fixed to the central rod, and the other end is fixed to the right side surface of the left disk; One end of the diagonal support rod for reinforcing and fixing the right disk is fixed to the central rod, and the other end is fixed to the left side surface of the right disk.

4. A casing pre-drilling device for concrete structure according to any one of claims 1 to 3, characterized in that: It also includes a rod remover for pulling the supporting and blocking structure out of the casing; The rod remover includes a base, a pull rod, a threaded sleeve and a handle; the pull rod support is installed on the base; the threaded sleeve is fixed to the front end of the pull rod, and the threaded sleeve is provided with an internal thread that cooperates with the external thread on the right fixed end; the handle is fixed to the rear end of the pull rod.

5. A casing pre-drilling device for concrete structure according to claim 4, characterized in that: The base comprises a left support frame and a right support plate; The left support frame is fixedly arranged at the left end of the base; The right support plate is fixedly arranged at the right end of the base, and the right support plate is provided with a through hole; The pull rod is passed through the through hole on the right support plate, and when the threaded sleeve is threadedly matched with the external thread on the right fixed end, the front end of the pull rod can pass through the left support frame.

6. A casing pre-drilling device for concrete structure according to claim 5, characterized in that: The pull rod is provided with an external thread; The rod remover also includes a nut; the nut is threadedly connected to the pull rod, and the nut is located in the pull rod section between the handle and the right support plate.

7. A casing pre-drilling device for concrete structure according to claim 6, characterized in that: The base is a triangular prism structure; The left support frame is a triangular frame structure, the right support plate is a triangular plate structure, and the planes where the left support frame and the right support plate are located are parallel.

8. A casing pre-drilling device for concrete structure according to any one of claims 5 to 7, characterized in that: The base is welded by steel bars and steel bars.

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