Wet joint longitudinal steel bar installation device

Abstract

The invention provides a wet joint longitudinal steel bar installation appliance which comprises a pipe body, a first end facing the pipe body is provided with an open hole, a containing cavity is defined in the open hole, and the containing cavity is suitable for containing at least one part of a plurality of longitudinal steel bars; a containing part is constructed in the containing cavity and is suitable for being coupled with the longitudinal steel bars, so that at least one part of the longitudinal steel bars is static relative to the pipe body; and the guide part is arranged at the second end of the pipe body, is gradually shrunk along the radial direction of the pipe body to form a guide head, and is suitable for generating relative slippage with an obstacle in the advancing direction in the process that the pipe body advances along the extending direction of the second end.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fabricated building, in particular to a wet joint longitudinal steel bar installation appliance. BACKGROUND

[0002] Wet joint refers to a construction technology that a certain gap is reserved between prefabricated components in a fabricated concrete structure, and then the steel bars are bound and the concrete is poured on site to connect the components into a whole. In the wet joint technology, in addition to the reserved steel bars that are reserved in advance when pouring, additional longitudinal steel bars that are perpendicular to the reserved steel bars are also placed in the wet joint to form continuous steel bars across the beam, so as to connect the wing plates of adjacent beams into a whole.

[0003] In the related art, two workers need to closely cooperate to insert one end of the longitudinal steel bar into the reserved steel bar of the wing plate, and ensure that the other worker pushes the steel bar into the reserved steel bar little by little, so as to ensure that the reserved steel bar and the longitudinal steel bar do not collide. However, it is difficult to ensure that the reserved steel bar and the longitudinal steel bar do not collide, which may cause the bending of the steel bar and the change of the steel bar layout position. SUMMARY

[0004] The present application provides a wet joint longitudinal steel bar installation appliance to solve the defects that the steel bar may be bent and the steel bar layout position may be changed due to the head-on collision between the wet joint longitudinal steel bar installation appliance and the reserved steel bar in the prior art. The guide head formed by the radial taper along the pipe diameter is provided, and the guide head slips with the reserved steel bar in front during the advancement of the guide head, so as to reduce the force between the reserved steel bar and the longitudinal steel bar installation appliance and reduce the adverse effects on the reserved steel bar caused by the collision.

[0005] The present application provides a wet joint longitudinal steel bar installation appliance, which comprises: a pipe body, an opening is formed at the first end of the pipe body, and a containing cavity is defined in the opening, the containing cavity is suitable for containing at least part of a plurality of longitudinal steel bars; a containing part is constructed in the containing cavity, the containing part is suitable for being coupled with the longitudinal steel bars, so that at least part of the plurality of longitudinal steel bars is relatively stationary with the pipe body; a guide part is provided at the second end of the pipe body, and a guide head is formed by the radial taper along the pipe body, and the guide part is suitable for relatively slipping with the obstacle in the advancing direction during the advancement of the pipe body along the extending direction of the second end.

[0006] According to the installation appliance provided by the present application, the included angle between the side wall of the guide head and the axis of the pipe body is greater than or equal to 30 degrees and less than or equal to 60 degrees.

[0007] According to the installation appliance provided by the present application, the side wall of the guide head is provided with a plurality of grooves along the extending direction of the second end, and at least one roller is arranged in each groove.

[0008] The installation tool provided by the application is characterized in that the surface of the roller is provided with a rubber buffer layer.

[0009] The installation tool provided by the application is characterized in that the guide head is provided with a lubricating layer.

[0010] The installation tool provided by the application is characterized in that the guide part is detachably arranged on the pipe body.

[0011] The installation tool provided by the application is characterized in that the installation tool further comprises a supporting part connected with the end of the first end of the pipe body and adapted to be coupled with at least part of the longitudinal steel bars to limit the deformation of the longitudinal steel bars in the vertical direction.

[0012] The installation tool provided by the application is characterized in that the supporting part comprises a steel sheet fixedly connected with the lower side wall of the pipe body and extending along the extension direction of the first end.

[0013] The installation tool provided by the application is characterized in that the installation tool further comprises a fixing belt, and a through hole is formed in the steel sheet, wherein the fixing belt is adapted to bundle a plurality of the longitudinal steel bars and fix the plurality of the longitudinal steel bars through the through hole.

[0014] The installation tool provided by the application is characterized in that the accommodating part comprises a plurality of accommodating holes uniformly arranged along the circumferential direction of the pipe body, and the inner diameter of the accommodating hole is substantially equal to the outer diameter of the longitudinal steel bar.

[0015] The wet joint longitudinal steel bar installation tool provided by the application fixes one end of the longitudinal steel bar in the installation tool through the coupling of the accommodating part to protect the longitudinal steel bar, and moves in the extension direction of the second end of the pipe body during the installation of the longitudinal steel bar, so that the guide head interacts with the reserved steel bar in the advancing direction when the reserved steel bar is encountered in the advancing direction of the pipe body, thereby realizing the relative sliding of the guide head and the reserved steel bar and avoiding the head-on collision of the reserved steel bar and the installation tool.

[0016] One or more technical solutions of the present application have at least the following technical effects or advantages: (1) The guide part is configured to form the guide head gradually tapered along the radial direction of the pipe body, and the guide head converts at least part of the force originally generated by the head-on collision of the installation tool and the reserved steel bar into the friction force of the guide head, thereby reducing the adverse effects of the installation tool on the reserved steel bar caused by the contact of the installation tool with the reserved steel bar and protecting the longitudinal steel bar. (2) Because the tail of the longitudinal steel bar will be bent downward due to gravity during installation, the longitudinal steel bar may collide with the reserved steel bar. The bearing part can slow down the bending of the tail of the longitudinal steel bar and reduce the probability of collision between the longitudinal steel bar and the reserved steel bar. (3) The guide head is provided with a roller. When the guide head contacts the reserved steel bar, the roller can further reduce the friction to further protect the reserved steel bar. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present application or prior art, the drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is a front view of a wet joint longitudinal steel bar installation device according to an illustrative embodiment of the present application; Figure 2 is a top view of a wet joint longitudinal steel bar installation device according to an illustrative embodiment of the present application; Figure 3 is a front view of a guide part according to an illustrative embodiment of the present application; Figure 4 is a side view of a wet joint longitudinal steel bar installation device according to an illustrative embodiment of the present application; Figure 5 is a sectional view of a wet joint longitudinal steel bar installation device along A-A according to an illustrative embodiment of the present application; Figure 6 is a schematic view of using a wet joint longitudinal steel bar installation device according to an illustrative embodiment of the present application.

[0019] Reference signs: 1 - pipe body; 2 - accommodating cavity; 21 - accommodating hole; 3 - guide part; 31 - groove; 32 - roller; 4 - bearing part; 41 - through hole; 5 - fixing belt. DETAILED DESCRIPTION

[0020] In order to make the objects, technical solutions and advantages of the present application clearer, the following will clearly and completely describe the technical solutions in the present application with reference to the drawings in the present application. Obviously, the described embodiments are only a part of embodiments of the present application, rather than all embodiments of the present application. Based upon the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0021] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "includes" and tautological expressions thereof, means the stated features, steps, operations and / or elements but does not preclude the presence or addition of one or more other features, steps, operations or elements.

[0022] All terms used herein including technical and scientific terms have the meanings commonly understood by one of ordinary skill in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted as having a meaning that is consistent with how the term is generally understood by those having ordinary skill in the art and not in an idealized or overly formal sense unless expressly so defined herein.

[0023] In the case of using expressions similar to "at least one of A, B, and C, etc.", it should generally be interpreted to include any of them alone, any combination of them, etc. In the case of using expressions similar to "at least one of A, B, or C, etc.", it should generally be interpreted to include any of them alone, any combination of them, etc.

[0024] In the related art, in the process of installing the longitudinal reinforcement of the wet joint, the longitudinal reinforcement is directly inserted into the gap in the reserved reinforcement, but such an installation method, due to the small gap between the reserved reinforcements, the longitudinal reinforcement may collide with the reserved reinforcement during the installation process, thereby causing the bending of the reinforcement.

[0025] In view of this, the present application provides a wet joint longitudinal reinforcement installation appliance.

[0026] Figure 1 is a front view of a wet joint longitudinal reinforcement installation appliance according to an illustrative embodiment of the present application; Figure 2 is a top view of a wet joint longitudinal reinforcement installation appliance according to an illustrative embodiment of the present application. is a front view of a wet joint longitudinal reinforcement installation appliance according to an illustrative embodiment of the present application;

[0027] As Figure 1 and Figure 2 shown, the wet joint longitudinal steel bar mounting device provided by the present application comprises a pipe body 1, an opening is formed at a first end of the pipe body 1, and a receiving cavity 2 is defined in the opening, and at least a part of a plurality of longitudinal steel bars can be accommodated in the receiving cavity 2. A receiving portion is configured in the receiving cavity 2, and the receiving portion is suitable for coupling with the longitudinal steel bars to make at least a part of the plurality of longitudinal steel bars relatively stationary with the pipe body 1. A guide portion 3 is arranged at a second end of the pipe body 1, and the guide portion 3 is tapered along a radial direction of the pipe body 1 to form a guide head, and the guide head is suitable for relatively sliding with an obstacle in a traveling direction during a process of traveling along an extension direction of the second end of the pipe body 1.

[0028] According to the embodiment of the present application, the pipe body 1 can be a hollow cylindrical shape, and can be made of a 60 / 75 steel flower pipe at a construction site. The pipe body 1 can be made of materials available at the construction site, and is simple to make, convenient to operate, and does not need to be installed and disassembled, and can be repeatedly used, which meets the requirements of energy saving and environmental protection.

[0029] According to the embodiment of the present application, the pipe body 1 can be made of 45 steel, 40Cr alloy steel, 304 / 316 stainless steel, aluminum alloy, or engineering plastic.

[0030] According to the embodiment of the present application, the pipe body 1 can be a variable cross-section pipe body, and a pipe diameter of the pipe body 1 near the first end is relatively large to form a larger receiving cavity 2, and a pipe diameter near the second end is gradually smaller to smoothly transition with the guide portion 3.

[0031] According to the embodiment of the present application, a length of the receiving cavity 2 along an axial direction of the pipe body 1 is greater than or equal to 20 times a diameter of the longitudinal steel bar to provide as much clamping length as possible to prevent the longitudinal steel bar from rotating at an opening of the receiving cavity 2.

[0032] According to the embodiment of the present application, the receiving portion can be a gasket arranged at an inner wall of the receiving cavity 2, and the gasket is coupled with the longitudinal steel bar to prevent the longitudinal steel bar from rotating in the receiving cavity 2. In addition, when there are a plurality of longitudinal steel bars in the receiving cavity 2, a buffer is arranged in the receiving cavity 2 to prevent the plurality of longitudinal steel bars from colliding, and further to fix the longitudinal steel bars.

[0033] According to the embodiment of the present application, the receiving portion can be a clamping member arranged in the receiving cavity 2, and the clamping member fixes an end of the longitudinal steel bar when the longitudinal steel bar enters the receiving cavity 2, and the clamping member can be a circlip, a pressing sheet, a bolt pressing plate, or the like.

[0034] According to the embodiment of the present application, a material with a high friction coefficient such as rubber or polyurethane can be arranged at an inner wall of the receiving cavity 2 to form the receiving portion, and the longitudinal steel bar is fixed by interference fit with the material.

[0035] According to the embodiment of the present application, the guide head of the guide part 3 is conical in shape to decompose the force of the installation tool and the obstacle in the lateral direction, and can also be hemispherical or streamlined to prevent the sharp head from colliding with the reserved steel bars.

[0036] The wet joint longitudinal steel bar installation tool provided by the present application can fix the longitudinal steel bars in the pipe body 1 through the accommodating part, and when the longitudinal steel bars are installed, one person can hold the pipe body 1 and send the pipe body 1 into the precast beam. The guide part 3 can decompose the force of the installation tool and the obstacle on the inclined surface of the guide head, reduce the impact force caused by the collision, and the installation tool can install multiple steel bars at a time, thereby improving the installation efficiency.

[0037] In an exemplary embodiment, the angle between the side wall of the guide head and the axis of the pipe body 1 is greater than or equal to 30 degrees and less than or equal to 60 degrees.

[0038] Figure 3 is a front view of the guide part 3 according to an exemplary embodiment of the present application.

[0039] As shown in Figure 3 In an exemplary embodiment, a plurality of grooves 31 are formed in the side wall of the guide head along the extension direction of the second end, and at least one roller 32 is arranged in each groove 31.

[0040] According to the embodiment of the present application, the roller 32 can be a cylindrical roller 32 or a universal wheel, and the roller 32 can be designed to be detachable.

[0041] According to the embodiment of the present application, a dynamic guide system is formed by the plurality of rollers 32, and when the side wall of the guide head contacts the obstacle, the impact between the installation tool and the obstacle can be further reduced by the rolling of the rollers 32.

[0042] In an exemplary embodiment, a rubber buffer layer is arranged on the surface of the roller 32 to reduce the impact of the roller 32 on the obstacle In an exemplary embodiment, a lubricating layer is arranged on the guide head to reduce the friction between the guide head and the obstacle, and to avoid damage to the guide head or the obstacle caused by relative sliding.

[0043] According to the embodiment of the present application, the lubricating layer can be a graphene, molybdenum disulfide or polytetrafluoroethylene coating to reduce the friction.

[0044] According to the embodiment of the present application, ultra-high molecular weight polyethylene or polyamide can also be used for integral injection molding to form the guide head.

[0045] In an exemplary embodiment, a ball can be arranged at the end of the guide head to guide the obstacles in front of the pipe body 1 to the side of the guide head.

[0046] In an exemplary embodiment, the guide 3 is detachably arranged on the pipe body 1.

[0047] According to an embodiment of the present application, the guide 3 is provided with a threaded hole at the end close to the pipe body 1 to form a male end, and the pipe body 1 is correspondingly provided with a thread at the end of the second end to form a female end, and the guide 3 is mounted on the pipe body 1 by the threaded engagement of the guide 3 and the pipe body 1.

[0048] According to an embodiment of the present application, the guide head with different angles can be assembled on the pipe body 1 as needed to meet various needs.

[0049] According to an embodiment of the present application, a screw hole is formed in the side wall of the guide 3 and the pipe body 1, and the guide 3 is mounted on the pipe body 1 by the screw.

[0050] In an exemplary embodiment, at least a part of the guide 3 is an elastic steel sheet, a plurality of hole positions are formed in the side wall of the guide 3 along the axial direction of the pipe body 1, each hole position corresponds to a preset angle, and a screw hole is also formed in the pipe body 1 correspondingly, when the side wall of the guide head and the axis of the pipe body 1 need to be to a certain target angle, the screw can be screwed into the corresponding hole position of the guide 3, the guide 3 is deformed by the pressing of the screw, and the guide head is deformed to the target angle.

[0051] Figure 4 is a side view of a wet joint longitudinal steel bar mounting device according to an exemplary embodiment of the present application; Figure 5 is a sectional view along A-A of the wet joint longitudinal steel bar mounting device according to an exemplary embodiment of the present application.

[0052] As shown in Figure 4 and Figure 5 The mounting device further includes a supporting part 4 connected to the end of the first end of the pipe body 1, and adapted to be coupled with at least a part of the at least one longitudinal steel bar to limit the deformation of the at least one longitudinal steel bar in the vertical direction.

[0053] Since the length of an ordinary longitudinal steel bar is generally about 9m, in the process of installation, in order to avoid the length of the free arm of the steel bar suspended between the pipe body 1 and the supporting point of the supporting part 4 being too long, the part of the free arm will be bent downward to a certain extent due to the influence of gravity, which may cause the longitudinal steel bar to rub against the closed pipe body 1, and the maximum distance between the supporting point of the supporting part 4 and the opening of the accommodating cavity 2 needs to be calculated.

[0054] According to the embodiment of the present application, for the longitudinal reinforcement exposed outside the pipe body 1, it can be regarded as a case of "cantilever beam with fixed end + uniform self-weight", based on which, the distance of the next support point of the supporting part 4 from the outlet of the accommodating cavity 2 can be determined based on the deflection of the free end thereof, which can be approximated as: (1) wherein L is the free length of the outlet of the accommodating cavity 2 to the next support point, E is the elastic modulus of the reinforcement, which can be generally set as ; the moment of inertia , wherein d is the diameter of the reinforcement; the self-weight line load , wherein the density , A is the cross-sectional area of the reinforcement.

[0055] Given the allowable deflection of 5 mm, the preset distance L max of the next support point of the supporting part 4 from the outlet of the accommodating cavity 2 can be inversely calculated as (2) According to the above calculation process, it can be concluded that if the deflection of the free arm of the reinforcement of various common diameters is to be controlled at about 5 mm, the supporting part 4 needs to provide corresponding support at most for how long. For example, for a reinforcement with a diameter of 16 mm, if the deflection thereof is to be controlled at 5 mm, the support point needs to be provided at most at a distance of 1.1 m from the opening of the accommodating cavity 2.

[0056] In an illustrative embodiment, the supporting part 4 comprises a steel sheet fixedly connected with the lower side wall of the pipe body 1 and extending along the extension direction of the first end.

[0057] According to the embodiment of the present application, by supporting the longitudinal reinforcement at the lower part through the steel sheet, the free end of the longitudinal reinforcement can be prevented from being excessively deflected due to gravity, so as to avoid collision between the tail of the longitudinal reinforcement and the reserved reinforcement, and in addition, the tendency of the longitudinal reinforcement to bend in the vertical direction can be inhibited when the installation tool collides with an obstacle.

[0058] In an illustrative embodiment, as shown in Figure 4 and Figure 5 , the installation tool further comprises a fixing band 5, and a through hole 41 is formed in the steel sheet, wherein the fixing band 5 is adapted to bundle a plurality of longitudinal reinforcements and fix the plurality of longitudinal reinforcements through the through hole 41.

[0059] According to the embodiment of the present application, the first end of the fixing band 5 can have a through hole 41 extending downward, and after winding around the plurality of longitudinal reinforcing bars, the second end of the fixing band 5 still below the through hole 41 is knotted to fix the plurality of longitudinal reinforcing bars. In this way, the longitudinal reinforcing bars can be further stabilized, the portion of the longitudinal reinforcing bars coinciding with the bearing part 4 can be kept straight, and the rotation of the longitudinal reinforcing bars can be prevented, thereby preventing the collision caused by the bending and rotation of the longitudinal reinforcing bars.

[0060] In an illustrative embodiment, the accommodating part comprises a plurality of accommodating holes 21 uniformly arranged along the circumference of the pipe body 1, wherein the inner diameter of the accommodating hole 21 is substantially equal to the outer diameter of the longitudinal reinforcing bar.

[0061] According to the embodiment of the present application, the inner diameter of the accommodating hole 21 can be set to be slightly smaller than the outer diameter of the longitudinal reinforcing bar (for example, it can be slightly smaller by 0.2-0.3 mm), and the end of the longitudinal reinforcing bar is fixed by interference fit.

[0062] According to the embodiment of the present application, a snap spring can be arranged in the accommodating hole 21 to clamp the longitudinal reinforcing bar.

[0063] According to the embodiment of the present application, the accommodating hole 21 can be slightly expanded in the direction of the second end after being reduced, so that the inner diameter of the accommodating hole 21 is slightly smaller than the outer diameter of the longitudinal reinforcing bar at the middle end of the accommodating hole 21.

[0064] Figure 6 is a schematic view of a longitudinal reinforcing bar installation device using a wet joint according to an illustrative embodiment of the present application.

[0065] As shown in Figure 6 , when installing the longitudinal reinforcing bar by wet joint, the entire installation device can be put into the gap of the reserved reinforcing bar of the prefabricated T-beam wing plate, and then the end of the longitudinal reinforcing bar to be inserted is fixed in the accommodating part, in addition, the longitudinal reinforcing bar is fixed on the bearing part by the fixing band 5 to prevent the longitudinal reinforcing bar or the installation device from falling off, and the longitudinal reinforcing bar and the installation device are sent by machine or manually until the longitudinal reinforcing bar is sent to the designated position, at which time the installation device is removed for further related operations.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A tool for installing longitudinal reinforcing bars in wet joints, characterized in that, include: The tube body has an opening at its first end facing the tube body, and the opening defines a receiving cavity, which is suitable for accommodating at least a portion of a plurality of longitudinal reinforcing bars. The accommodating cavity is configured with an accommodating portion, which is adapted to be coupled with the longitudinal reinforcing bars so that at least a portion of the multiple longitudinal reinforcing bars are relatively stationary with respect to the pipe body; A guide section is provided at the second end of the tube body, and a guide head is formed by gradually narrowing along the radial direction of the tube body. It is suitable for relative sliding with obstacles in the direction of travel during the travel of the tube body along the extension direction of the second end [Ruilu 1].

2. The installation device according to claim 1, characterized in that, The angle between the sidewall of the guide head and the axis of the tube body is greater than or equal to 30 degrees and less than or equal to 60 degrees.

3. The installation device according to claim 2, characterized in that, The sidewall of the guide head is provided with a plurality of grooves along the extension direction of the second end, and at least one roller is provided in each groove.

4. The installation device according to claim 3, characterized in that, The surface of the roller is provided with a rubber buffer layer.

5. The installation device according to claim 2, characterized in that, The guide head is provided with a lubricating layer [Rel2].

6. The installation device according to claim 2, characterized in that, The guide section is detachably mounted on the tube body.

7. The installation device according to claim 1, characterized in that, The installation device further includes a support portion connected to the end of the first end of the pipe body, adapted to couple with at least a portion of at least one of the longitudinal reinforcing bars to limit the deformation of at least one of the longitudinal reinforcing bars in the vertical direction.

8. The installation device according to claim 7, characterized in that, The supporting part includes a steel sheet that is fixedly connected to the lower side wall of the tube and extends along the extension direction of the first end.

9. The installation device according to claim 8, characterized in that, The installation device also includes a fixing strap, and the steel sheet has through holes. The fixing strap is suitable for binding multiple longitudinal steel bars together and fixing the multiple longitudinal steel bars through the through holes.

10. The installation device according to claim 1, characterized in that, The receiving portion includes a plurality of receiving holes, which are evenly arranged along the circumference of the tube body, wherein the inner diameter of the receiving hole is approximately equal to the outer diameter of the longitudinal reinforcing bar.

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