A casing pre-embedded tool for building aluminum formwork construction

Abstract

The present invention discloses a casing pre-embedded tool for construction of building aluminum molds, comprising: a connecting rod; a first piston, the first piston is threadedly matched with the connecting rod, and the first piston is provided with a first positioning protrusion; a second piston, the second piston can move along the connecting rod, and the second piston is provided with a second positioning protrusion; a first spring, the first spring is used to move the second piston; a bayonet pin, the bayonet pin is covered with a second spring, and the bayonet pin has a fixed state and a disengaged state, in which the bayonet pin fixes the second piston on the connecting rod, and in the disengaged state, the first spring can drive the second piston to move. The first positioning protrusion and the second positioning protrusion on the tool can be inserted into the first positioning hole and the second positioning hole on the aluminum molds on both sides to fix the casing, so that the position of the casing is not easily offset during the subsequent construction process.

Description

Technical Field

[0001] The invention relates to the field of pre-embedding of casing pipes, in particular to a pre-embedding tool for casing pipes used in the construction of building aluminum molds. Background Art

[0002] With the increasing requirements of modern building construction technology, the application of aluminum formwork has the characteristics of simple construction, excellent environmental protection, cost saving, and improved quality. In the future, the aluminum formwork construction technology will be widely popularized in building construction; however, the supporting construction technology in aluminum formwork construction has not yet been perfected, and the supporting construction process consumes a lot of manpower and financial resources.

[0003] Generally, buildings are designed with embedded casings for fire protection pipes, water supply and drainage pipes, ventilation pipes, gas pipes, wire pipes, etc. that need to pass through beams and concrete structure walls. In the past, in the actual construction process, they usually cut and cut the materials, and then need to carry out manual sealing and wrapping, welder shaping, on-site welding and fixing, hole search after demolding, cutting sealing tape and other processes. This leads to poor accuracy of embedded positioning of casings, and the wall penetration rate cannot be ensured due to the influence of casing length, so the success rate is low, which consumes a lot of manpower and financial resources as well as auxiliary materials such as welding rods and tapes, and leaves great quality risks for the later installation of pipes and wires. Therefore, it is necessary to design a tool to assist in the embedded casings. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the first object of the present invention is to provide a casing pre-embedded tool for building aluminum formwork construction.

[0005] The technical solution of the present invention is as follows: A casing pre-embedded tool for construction of building aluminum molds, comprising: a connecting rod, the connecting rod including a first part and a second part along its axial direction, the first part is provided with a thread, and the second part is provided with a first clamping hole extending radially along the connecting rod; a first piston, the first piston is provided with a threaded hole extending axially of the connecting rod, the first piston is threadedly matched with the first part through the threaded hole, and the end of the first piston away from the connecting rod is provided with a first positioning protrusion; a second piston, the second piston is provided with a mounting hole extending axially of the connecting rod and a second clamping hole extending radially along the connecting rod, the second piston is sleeved on the second part through the mounting hole and can move along the connecting rod, and the end of the second piston away from the connecting rod is provided with a second positioning protrusion; a first spring, The first spring is sleeved on the second part, the first spring is in contact with the second piston, and the first spring is used to move the second piston in a direction away from the first piston; a bayonet pin, the bayonet pin is movably arranged in the first clamping hole, the axial ends of the bayonet pin are respectively a first end and a second end, and the bayonet pin is sleeved with a second spring; the bayonet pin has a fixed state and a disengaged state, in the fixed state, the first end protrudes from the connecting rod and is clamped into the second clamping hole, under the action of the first spring, the second piston is tightly in contact with the bayonet pin to fix the second piston on the connecting rod; in the disengaged state, the second spring is used to retract the first end into the clamping hole so that the first spring can drive the second piston to move, and at this time the second end protrudes from the connecting rod.

[0006] Furthermore, sealing rings are provided on the outer peripheral wall of the first piston and the outer peripheral wall of the second piston.

[0007] Furthermore, a positioning piece is fixedly provided on the second part, and the first spring is stopped between the positioning piece and the second piston.

[0008] Furthermore, one end of the second piston away from the first piston is recessed in a direction close to the first piston to form an avoidance groove, the avoidance groove is connected to the mounting hole, the second part extends into the avoidance groove, a retaining ring is fixedly provided on the part of the second part located in the avoidance groove; the second piston is provided with a cover plate for sealing the avoidance groove, and the cover plate is provided with the second positioning protrusion.

[0009] Furthermore, an annular limiting protrusion is provided on the inner circumferential wall of the first clamping hole, and the clamping pin includes a third part and a fourth part along its axial direction, the third part is adjacent to the first end, and the fourth part is adjacent to the second end, the diameter of the third part is larger than the diameter of the fourth part, and a nut is threadedly connected at the second end, the second spring sleeve is arranged on the fourth part and stops between the limiting protrusion and the nut, and in the disengaged state, the third part abuts against the limiting protrusion.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] When the tool is in use, the sleeve and the tool in the sleeve are placed into the beam or wall as needed to embed the steel bars near the sleeve. During the placement process, the aluminum molds on both sides will squeeze the first positioning pin and the second positioning pin, so that the second piston moves back. Once the second piston no longer squeezes the bayonet pin, under the action of the second spring, the first end of the bayonet pin will retract into the bayonet hole and no longer fix the second piston. At this time, the first spring generates thrust to push the second piston to move outward, and then the first positioning protrusion and the second positioning protrusion are adjusted and inserted into the first positioning hole and the second positioning hole on the aluminum molds on both sides. In this form, the sleeve can be fixed, so that in the subsequent construction process, the position of the sleeve is not easy to deviate, and the error of the sleeve position can be controlled within 5mm, which fully meets the pipeline installation requirements. The device has a simple structure, is easy to install, easy to use, and has strong practicality.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0014] Figure 1 is a schematic diagram of the present invention;

[0015] Figure 2 is a schematic diagram of the bayonet of the present invention in a fixed state;

[0016] Figure 3 yes Figure 2 The enlarged image of the area circled in the middle;

[0017] Figure 4 is a schematic diagram of the bayonet of the present invention in a disengaged state;

[0018] Figure 5 yes Figure 4 The enlarged image of the area circled in the middle;

[0019] Figure 6 Schematic diagram of the cover plate of the present invention.

[0020] Reference numerals:

[0021] 1. Aluminum mold; 2. Sleeve; 3. Connecting rod; 4. First part; 5. Second part; 6. First clamping hole; 7. First piston; 8. First positioning protrusion; 9. Second piston; 10. Second clamping hole; 11. Second positioning protrusion; 12. First spring; 13. Bayonet; 14. Second spring; 15. Sealing ring; 16. Positioning piece; 17. Avoidance groove; 18. Cover plate; 19. Limiting protrusion; 20. Third part; 21. Fourth part; 22. Nut; 23. Retaining ring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 invention.

[0024] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0025] Please refer to the following drawings Figure 1-Figure 6The present invention describes a tool for pre-embedding a casing 2 for construction of an architectural aluminum formwork 1. The tool comprises a connecting rod 3, a first piston 7, a second piston 9, a first spring 12 and a bayonet 13.

[0026] like Figure 1 As shown, the connecting rod 3 includes a first portion 4 and a second portion 5 along its axial direction (e.g., the left-right direction shown in the figure), the first portion 4 is provided with a thread, and the second portion 5 is provided with a first clamping hole 6 extending along the radial direction (e.g., the up-down direction shown in the figure) of the connecting rod 3. Specifically, in the figure, the connecting rod 3 is placed along the left-right direction, the first portion 4 is located on the left, and the second portion 5 is located on the right.

[0027] The first piston 7 is provided with a threaded hole extending axially of the connecting rod 3. The first piston 7 is threadedly engaged with the first part 4 through the threaded hole. The end of the first piston 7 away from the connecting rod 3 is provided with a first positioning protrusion 8, so that the fixed position of the first piston 7 can be adjusted by rotating the connecting rod 3 or the first piston 7.

[0028] The second piston 9 is provided with a mounting hole extending axially of the connecting rod 3 and a second clamping hole 10 extending radially along the connecting rod 3. The second piston 9 is sleeved on the second part 5 through the mounting hole and can move along the connecting rod 3. The end of the second piston 9 away from the connecting rod 3 is provided with a second positioning protrusion 11. The first spring 12 is sleeved on the second part 5. The first spring 12 abuts against the second piston 9. The first spring 12 is used to move the second piston 9 in a direction away from the first piston 7.

[0029] like Figure 2-Figure 5 As shown, the bayonet 13 is movably arranged in the first bayonet hole 6, and the axial ends of the bayonet 13 are respectively a first end and a second end, and a second spring 14 is arranged on the bayonet 13; the bayonet 13 has a fixed state and a disengaged state. In the fixed state, the first end protrudes from the connecting rod 3 and is inserted into the second bayonet hole 10. Under the action of the first spring 12, the second piston 9 is tightly abutted against the bayonet 13 to fix the second piston 9 on the connecting rod 3; in the disengaged state, the second spring 14 is used to retract the first end into the bayonet hole so that the first spring 12 can drive the second piston 9 to move, and the second end protrudes from the connecting rod 3.

[0030] Specifically, before using this tool, the aluminum mold 1 and the sleeve 2 need to be processed first. After the aluminum mold 1 is assembled, according to the requirements of the drawing, a positioning hole is opened at the location of the embedded sleeve 2, wherein the positioning hole on the aluminum mold 1 at one axial end of the sleeve 2 is the first positioning hole, and the positioning hole on the aluminum mold 1 at the other axial end of the sleeve 2 is the second positioning hole. Before the sleeve 2 is embedded, the pipe cutting process is carried out according to the requirements of the drawing. Generally, the length of the sleeve 2 is reduced by about 5mm according to the width of the beam and wall, and then the appropriate model of this tool is selected according to the size of the sleeve 2.

[0031] When in use, first press the second piston 9 so that the second piston 9 overcomes the force of the first spring 12 and moves so that the first clamping hole 6 and the second clamping hole 10 are aligned, then press the second end of the protruding bayonet 13, the bayonet 13 overcomes the force of the second spring 14 and moves so that the first end of the bayonet 13 is clamped into the second clamping hole 10, after releasing the second piston 9, the first piston 7 pushes the second piston 9 to move so that the second piston 9 squeezes the bayonet 13, at this time the bayonet 13 and the second piston 9 are both locked and cannot move, then rotate the first piston 7 according to the length of the sleeve 2 to adjust to a suitable length, and put it into the sleeve 2 for standby use.

[0032] The sleeve 2 and the tool in the sleeve 2 are embedded with the steel bars near the sleeve 2 as needed and placed in the beam or wall. During the placement process, the aluminum molds 1 on both sides will squeeze the first positioning pin and the second positioning pin, so that the second piston 9 moves back. Once the second piston 9 no longer squeezes the bayonet pin 13, under the action of the second spring 14, the first end of the bayonet pin 13 will retract into the bayonet hole and no longer fix the second piston 9. At this time, the first spring 12 generates a thrust to push the second piston 9 to move outward, and then the first positioning protrusion 8 and the second positioning protrusion are adjusted and inserted into the first positioning hole and the second positioning hole on the aluminum molds 1 on both sides. In this form, the sleeve 2 can be fixed, so that in the subsequent construction process, the position of the sleeve 2 is not easy to deviate, and the error of the position of the sleeve 2 can be controlled within 5mm, which fully meets the pipeline installation requirements. The device has a simple structure, is easy to install, easy to use, and has strong practicality.

[0033] After the aluminum mold 1 is removed, the tool is taken out from the sleeve 2 and the bayonet pin 13 is re-inserted for next use.

[0034] In this embodiment, Figure 1 As shown, a sealing ring 15 is provided on the outer peripheral wall of the first piston 7 and the outer peripheral wall of the second piston 9 for isolating concrete, that is, during the concrete pouring process, the concrete will not enter the interior of the sleeve 2 due to the protection of the sealing ring 15.

[0035] In this embodiment, Figure 1 As shown, a positioning piece 16 is fixedly provided on the second part 5 , and the first spring 12 is stopped between the positioning piece 16 and the second piston 9 . The positioning piece 16 is used to limit the position of the first spring 12 .

[0036] In this embodiment, Figure 1 , Figure 2 and Figure 6As shown, the end of the second piston 9 away from the first piston 7 (for example, the right end) is recessed toward the direction close to the first piston 7 (for example, to the left) to form an avoidance groove 17, the avoidance groove 17 is connected to the mounting hole, the second part 5 extends into the avoidance groove 17, and a retaining ring 23 is fixedly provided on the part of the second part 5 located in the avoidance groove 17; the second piston 9 is provided with a cover plate 18 for sealing the avoidance groove 17, the cover plate 18 is provided with a second positioning protrusion 11, and the retaining ring 23 is provided to limit the moving stroke of the second piston 9.

[0037] In this embodiment, Figure 2-Figure 5 As shown, an annular limiting protrusion 19 is provided on the inner peripheral wall of the first clamping hole 6, and the clamping pin 13 includes a third part 20 and a fourth part 21 along its axial direction. The third part 20 is adjacent to the first end, and the fourth part 21 is adjacent to the second end. The diameter of the third part 20 is larger than the diameter of the fourth part 21, and a nut 22 is threadedly connected at the second end. The second spring 14 is sleeved on the fourth part 21 and stopped between the limiting protrusion 19 and the nut 22. In the disengaged state, the third part 20 abuts against the limiting protrusion 19, thereby simplifying the structure and facilitating the installation of the clamping pin 13 and the connecting rod 3.

[0038] In actual application of this tool, the diameters of the first piston 7 and the second piston 9 are produced according to the inner diameter of each type of sleeve 2 reduced by 3-4mm. The common types of sleeves 2 on the market are roughly dn50, dn65, dn75, dn80, dn100, dn125, dn150, dn200, etc. The production lengths of the connecting rod 3 are generally 70mm, 170mm, 270mm, 370mm, etc., which are respectively suitable for pre-embedding of wall thicknesses of 90-170mm, 190-280mm, 290-380mm, and 390-470mm. The diameter of the connecting rod 3 is unified to 14mm, which is convenient for all diameter pistons. The depth of the avoidance groove 17 needs to have a 20mm space for the movement of the second piston 9.

[0039] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A casing pre-embedded tool for building aluminum formwork construction, characterized in that: include: A connecting rod, wherein the connecting rod comprises a first portion and a second portion along its axial direction, the first portion is provided with a thread, and the second portion is provided with a first clamping hole extending along the radial direction of the connecting rod; a first piston, wherein a threaded hole extending axially from the connecting rod is provided on the first piston, the first piston is threadably engaged with the first portion through the threaded hole, and a first positioning protrusion is provided at one end of the first piston away from the connecting rod; a second piston, the second piston being provided with a mounting hole extending axially of the connecting rod and a second clamping hole extending radially along the connecting rod, the second piston being sleeved on the second part through the mounting hole and being movable along the connecting rod, and a second positioning protrusion being provided at one end of the second piston away from the connecting rod; a first spring, wherein the first spring is sleeved on the second part, the first spring abuts against the second piston, and the first spring is used to move the second piston in a direction away from the first piston; A bayonet pin, the bayonet pin is movably disposed in the first bayonet hole, the axial ends of the bayonet pin are respectively a first end and a second end, and a second spring is disposed on the bayonet pin; Wherein, one end of the second piston away from the first piston is recessed toward the direction close to the first piston to form an avoidance groove, the avoidance groove is communicated with the mounting hole, the second part extends into the avoidance groove, and a retaining ring is fixedly provided on the part of the second part located in the avoidance groove; the second piston is provided with a cover plate for covering the avoidance groove, and the cover plate is provided with the second positioning protrusion; An annular limiting protrusion is provided on the inner peripheral wall of the first clamping hole, and the clamping pin includes a third part and a fourth part along its axial direction, the third part is adjacent to the first end, the fourth part is adjacent to the second end, the diameter of the third part is larger than the diameter of the fourth part, a nut is threadedly connected at the second end, the second spring sleeve is on the fourth part and stops between the limiting protrusion and the nut, and in the disengaged state, the third part abuts against the limiting protrusion; The bayonet has a fixed state and a disengaged state. In the fixed state, the first end protrudes from the connecting rod and is engaged in the second engaging hole. Under the action of the first spring, the second piston is tightly abutted against the bayonet to fix the second piston on the connecting rod. In the disengaged state, the second spring is used to retract the first end into the engaging hole so that the first spring can drive the second piston to move, and the second end protrudes from the connecting rod.

2. The casing pre-embedded tool for building aluminum formwork construction according to claim 1, characterized in that: Sealing rings are provided on the outer peripheral wall of the first piston and the outer peripheral wall of the second piston.

3. The casing pre-embedded tool for building aluminum formwork construction according to claim 1, characterized in that: A positioning piece is fixedly provided on the second part, and the first spring is stopped between the positioning piece and the second piston.

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