Quick fixing device for embedded beam sleeve and construction method thereof

Abstract

This invention belongs to the field of building construction and water and electricity installation, and specifically relates to a quick fixing device and construction method for pre-embedded through-beam sleeves. The device consists of two parts: a plug and a pipe head. The end face of the plug that contacts the beam formwork has a column for insertion into a hole in the beam formwork, or the plug is connected to the beam formwork with a nail. The other end face of the plug is inserted into the pipe head and has various connection methods, including snap-fit, threaded, and straight-insertion elastic telescopic connections. The snap-fit ​​connection includes a lug on the outer wall of the plug. The inner wall of the pipe head has a receiving groove corresponding to the lug on the outer wall of the plug. The device also includes a mechanism on the end face of the plug that contacts the beam formwork to prevent the plug from rotating or loosening when connected to the pipe head.

Description

Technical Field

[0001] This invention belongs to the field of building water and electricity construction technology, specifically relating to a quick fixing device for pre-embedded beam sleeves and its construction method. Background Technology

[0002] Currently, the pre-embedding of beam sleeves on construction sites has traditionally involved either electric welding or fixing the plastic caps on the sleeves to the beam formwork with self-tapping screws. Electric welding not only damages the beam reinforcement but is also slow. Furthermore, because the reinforcement is subjected to vibration from the vibrator and the pressure from the concrete, the sleeves are prone to shifting, sometimes even becoming unusable. Fixing with plastic caps to the formwork is difficult to do, whether before or after tying the reinforcement, due to the limited space within the beam. Additionally, each nail used for fixing becomes a small hole for the next use, and over time, the formwork becomes riddled with nail holes, making it difficult to drive in new nails. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a quick fixing device for pre-embedded beam sleeves that is simple in structure, quick to fix, and firm.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This quick-fixing device consists of two parts: a plug and a pipe head. The end face of the plug that contacts the beam template has a column for insertion into a hole in the beam template, or the plug is connected to the beam template with a nail. The other end face of the plug is inserted into the pipe head and has a snap-fit, threaded, or straight-insertion elastic telescopic connection with the pipe head. The snap-fit ​​connection includes a lug on the outer wall of the plug. The inner wall of the pipe head has a receiving groove corresponding to the lug on the outer wall of the plug. This device also includes a mechanism on the end face of the plug that contacts the beam template to prevent the plug from rotating or loosening when connected to the pipe head.

[0006] Preferably, a cylinder is fixed to the end face of the plug that contacts the beam template;

[0007] Preferably, the end face of the plug that contacts the beam template is provided with a mechanism to prevent the plug from rotating when connected to the pipe head, which consists of several plate-like bodies arranged radially to connect the cylinder and the inner wall of the plug.

[0008] Preferably, the end face of the plug that contacts the beam template is provided with a mechanism to prevent the plug from loosening when connected to the pipe head, which is an elastic telescopic body on the plug; the elastic telescopic body is a reset pin; and the plug is provided with a flange.

[0009] Preferably, the outer wall of the plug is provided with lugs at intervals; the inner wall of the pipe head is provided with a receiving groove formed by a baffle corresponding to the lugs provided on the outer wall of the plug.

[0010] Preferably, the receiving groove on the inner wall of the pipe head has a sloping baffle at its clockwise end;

[0011] Furthermore, the flange and pipe wall at the reset pin on the plug are provided with a disassembly groove larger than the diameter of the pin.

[0012] As two other preferred technical solutions of the present invention, the invention includes a pipe head and a plug, wherein a cylinder is provided inside the plug, and a plate-like body is connected to the inner wall of the plug.

[0013] Preferably, the threaded connection includes an external thread on the outer wall of the plug; an internal thread on the inner wall of the pipe head; and the internal thread of the pipe head is broken into two or more pieces.

[0014] Preferably, the direct-insertion elastic telescopic body connection includes a positioning pin in the inner cavity of the plug that can extend and retract through a hole in the cavity wall; and an annular groove in the inner wall of the tube head that can accommodate the pin head of the positioning pin.

[0015] Furthermore, the construction method is as follows:

[0016] a. According to the requirements of the drawings, determine the position of the through-beam sleeve to be pre-embedded on the beam formwork and mark it with a marker; according to the size of the cylinder on the end cap, drill a hole at the center position of the circle marked with a marker on the beam formwork, and set it aside for later use;

[0017] b. At any position on the beam formwork where the through-beam sleeve will be installed, that is, at any position within the inner diameter of the through-beam sleeve to be installed on the beam formwork, screw in a self-drilling screw, the length of which protrudes outside is shorter than the width of the plate-shaped body connecting the cylinder on the end cap to the inner wall of the end cap.

[0018] c. Insert the reset pin into the plug, leaving the pin head exposed on the outer wall of the plug; wrap the disassembly groove on the flange with tape to prevent cement slurry from leaking into it during concrete pouring;

[0019] d. During installation, first insert the cylindrical end of the plug into the pre-drilled hole in the beam formwork. Then, put the two pipe ends onto the outside of the pre-determined length of the through-beam sleeve (the width of the beam minus the length of the two plugs is the length of the through-beam sleeve). Place the end of the pipe end connected to the plug outside both ends of the through-beam sleeve. Place the through-beam sleeve together with the two pipe ends inside the beam at the location of the plug. Align the notch between the two receiving grooves on the pipe end with the lug on the plug. Press the pin of the reset pin into the pin, gently insert it and rotate clockwise. When the plug rotates, it will encounter the drill thread screw screwed on the beam formwork and stop rotating. The pipe end continues to rotate. The lug on the plug falls into the receiving groove and encounters the obstruction of the ramp baffle and stops rotating. After the pin of the reset pin on the plug passes the ramp baffle, you will hear a click, indicating that the pin has popped out and landed in front of the ramp baffle. In this way, the pipe end and the plug are tightly connected together. Even if the plug or pipe end is reversed under the action of external force, the two will not separate.

[0020] e. After the concrete is poured and the formwork is removed, tear off the tape on the removal groove of the plug flange to expose the pin of the reset pin. Use a flathead screwdriver or hacksaw blade to press the pin to retract it, and rotate the plug counterclockwise. The plug can then be easily removed for future use.

[0021] It should be noted here that the construction methods for threaded connections and straight-insertion elastic expansion joints are basically the same as those for snap-fit ​​connections, so they will not be described again.

[0022] The beneficial effects of this invention are as follows:

[0023] 1) Whether it's a snap-fit ​​connection, a threaded connection, or a straight-insertion elastic telescopic connection, all have the advantages of quick installation, secure fixing, and cost-effectiveness. It consists of two parts: a plug and a pipe end. After demolding, the plug can be removed and reused, saving costs. Both ends of the through-beam sleeve are also open, eliminating the need to remove the sleeve.

[0024] 2) The cylindrical part of the plug is inserted into the hole in the beam formwork, which solves the major problem of fixing the beam formwork to the beam sleeve, directly eliminating the need for electric welding or nailing to the formwork; moreover, it can be operated before or after the beam reinforcement is tied, avoiding unpleasantness with the steelworkers during cross-construction.

[0025] 3) Drilling holes in the beam formwork and connecting the inner wall of the plug to the plate-like body of the cylinder not only prevents the plug from rotating when the pipe head and the plug are connected, but also serves as a reinforcing rib.

[0026] 4) The reset pin uses the extension and retraction of the spring. When the tube head rotates, the pin head is squeezed in the receiving groove and retracts. After passing the ramp baffle, the pin head pops out again. The ramp baffle on this side is 90 degrees, which firmly blocks the pin head in front.

[0027] 5) The flange on the plug prevents slurry from entering the pipe head during concrete pouring. After demolding, the plug can be easily removed by using a flathead screwdriver or hacksaw blade to press down the pin of the reset pin and rotate the plug counterclockwise using the removal groove on the flange and the pipe wall. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a half-width installation structure;

[0029] Figure 2 This is a schematic diagram of the plug structure in the snap-fit ​​connection;

[0030] Figure 3 This is a schematic diagram of the tube head structure in a snap-fit ​​connection;

[0031] Figure 4 A schematic diagram of the sloping partition plate in the groove of the pipe head in the snap-fit ​​connection;

[0032] Figure 5 A schematic diagram of the disassembly groove for the reset pin in the snap-fit ​​connection;

[0033] Figure 6 This is a schematic diagram of the structure of the tube head inserted into the elastic telescopic body;

[0034] Figure 7 A schematic diagram of the plug inserted into the elastic telescopic body;

[0035] Figure 8 This is a schematic diagram of the plug structure in a threaded connection;

[0036] Figure 9 This is a top view of the pipe end in a threaded connection;

[0037] Figure 10 This is a schematic diagram of the pipe head in a threaded connection.

[0038] The symbols marked in the diagram have the following meanings:

[0039] 1—Pipe head; 11—Receiving groove; 111—Cylinder; 7—Positioning pin; 77—Pin head of positioning pin; 2—Plug; 24—Disassembly groove; 9—Through beam sleeve; 14—Sloping partition; 22—Lug; 25—Plate-shaped body; 32—Internal thread; 8—Reset pin; 88—Pin head of reset pin; 23—Flange; 30—External thread; 101—Bottom template; 13—Notch; 10—Beam template; 31—Thread break flat end; 12—Groove; 102—Top template. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0041] like Figure 1 As shown, one end of the pipe head 1 has a through-beam sleeve inserted inside. At the other end of the pipe head, a plug 2 is inserted, with its lug 22 settling into the receiving groove 11 inside the pipe head. A flange 23 on the plug is located on the side of the pipe head. A reset pin 8 rests against the edge of the receiving groove on the pipe head. A cylinder 111 inside the plug is inserted into a hole in the beam formwork 10.

[0042] like Figure 1 , 2 As shown in Figures 3, 4, and 5, the outer wall of the plug is provided with a lug 22 that can be inserted into the pipe head 1 and form a receiving groove 11 by a baffle. This utilizes the principle of snap-locking. The plug is blocked by the ramp baffle 14 in the receiving groove in front of it. After the plug rotates, the pin of the reset pin passes through the ramp baffle 14 in the receiving groove 11 and abuts against the front of the ramp baffle. In this way, the plug cannot move forward or backward in the pipe head, and the two are connected very firmly.

[0043] like Figure 6 , 7 Items 8, 9, and 10 represent threaded connections and direct-insertion elastic expansion joints. Threaded connections use the interlocking force of male and female threads to achieve fixation. The break in the thread reduces the difficulty and cost of mold opening, and also prevents cement slurry from entering for easier cleaning and removal of the plug 2. Direct-insertion elastic expansion joints utilize the telescoping principle of the positioning pin 7. When the plug is inserted into the pipe head 1, and the pin 77 of the positioning pin reaches the groove 12 in the pipe head, the pin, not under pressure, springs out under the force of the spring and falls into the groove 12, thus firmly connecting the pipe head and the plug together.

[0044] The construction method is as follows:

[0045] a. According to the requirements of the drawings, determine the position of the through-beam sleeve 9 to be pre-embedded on the beam formwork and mark it with a marker; according to the size of the cylinder 111 on the end cap, drill a hole at the center position marked with a marker on the beam formwork, and set it aside;

[0046] b. At any position on the beam formwork where the through-beam sleeve 9 will be installed, that is, at any position within the inner diameter of the through-beam sleeve to be installed on the beam formwork, screw in a self-drilling screw, the length of which protrudes outside is shorter than the width of the plate-shaped body 25 connecting the cylinder 111 on the end cap to the inner wall of the end cap.

[0047] c. Insert the reset pin 8 into the plug 2, leaving the pin head exposed on the outer wall of the plug; wrap the disassembly groove 24 on the flange and pipe wall 23 with tape to prevent cement slurry from leaking into the pipe during concrete pouring.

[0048] d. During installation, first insert the cylinder 111 of plug 2 into the pre-drilled hole in the beam formwork. Then, insert the two pipe ends 1 onto the pre-determined length of the through-beam sleeve (the width of the beam minus the length of the two plugs equals the length of the through-beam sleeve). Place the end of the pipe end connected to the plug outside both ends of the through-beam sleeve. Place the through-beam sleeve, along with the two pipe ends on the outside, into the beam at the location of the plug. Align the notch 13 between the two receiving grooves 11 on pipe end 1 with the lug 22 on plug 2. Then, insert the reset pin... The pin is pressed into the pin and gently inserted and rotated clockwise. When the plug rotates, it encounters the drill thread screwed on the beam formwork and stops rotating. The pipe head 1 continues to rotate. The lug on the plug 2 falls into the receiving groove 11 and is blocked by the ramp partition 14, and then stops rotating. When you hear a click, it means that the pin has popped out of the pin and landed outside the ramp partition of another receiving groove. In this way, the pipe head and the plug are tightly connected together. Even if the plug or the pipe head is reversed under the action of external force, the two will not separate.

[0049] e. After the concrete is poured and the formwork is removed, tear off the tape on the flange of the plug and the disassembly groove 24 on the pipe wall to expose the pin of the reset pin 8. Use a flathead screwdriver or hacksaw blade to press the pin and retract it. Rotate the plug counterclockwise so that the plug 2 can be removed smoothly for the next use.

Claims

1. A quick fixing device for pre-buried beam-penetrating sleeve, characterized in that: The quick-fixing device consists of two parts: a plug and a pipe head. The end face of the plug (2) that contacts the beam template (10) is provided with a column for insertion into a hole provided on the beam template or the plug (2) is connected to the beam template with a nail. The other end face of the plug is inserted into the pipe head and is provided with a snap-fit ​​type, a threaded type, and a straight-insertion elastic telescopic type connection with the pipe head (1). The snap-fit ​​type connection includes a lug (22) on the outer wall of the plug (2). The inner wall of the pipe head (1) is provided with a receiving groove (11) corresponding to the lug (22) on the outer wall of the plug (2). The device also includes a mechanism on the end face of the plug that contacts the beam template to prevent the plug from rotating or loosening when connected to the pipe head.

2. A quick fixing device for pre-buried beam-penetrating sleeve according to claim 1, characterized in that: A cylinder (111) is fixed on the end face of the plug that contacts the beam template.

3. According to claim 1 or 2, a quick fixing device for pre-embedded beam sleeve is provided on the end face of the plug (2) connected to the beam template (10) to prevent the plug from rotating when connected to the pipe head (1). The end face of the plug (2) is provided with a number of plate-shaped bodies (25) radially to connect the cylinder (111) and the inner wall of the plug (2).

4. According to claim 1, the end face of the plug that contacts the beam template is provided with a mechanism to prevent the plug (2) from loosening when connected with the pipe head (1), and the plug is provided with an elastic telescopic body; the elastic telescopic body is a reset pin (8); the plug is provided with a flange (23).

5. According to claim 1, the outer wall of the plug is provided with lugs (22) at intervals; the inner wall of the pipe head (1) is provided with a baffle corresponding to the lugs (22) provided on the outer wall of the plug (2) to form a receiving groove (11).

6. The quick fixing device for pre-embedded beam sleeves according to claim 5, characterized in that: The inner wall of the pipe head (1) has a receiving groove (11) with a ramp baffle (14) at the end in the clockwise direction.

7. The quick fixing device for pre-embedded beam sleeves according to claim 4, characterized in that: The flange (23) at the reset pin (8) on the plug (2) and the pipe wall are provided with a disassembly groove (24) larger than the diameter of the pin.

8. The quick fixing device for pre-embedded beam sleeves according to claim 1, characterized in that... The threaded connection includes an external thread (30) on the outer wall of the plug; an internal thread (32) on the inner wall of the pipe head; and the internal thread (32) of the pipe head (1) is broken into two or more pieces.

9. The quick fixing device for pre-embedded beam sleeves according to claim 1, characterized in that: The direct-insertion elastic telescopic body connection includes a positioning pin (7) in the inner cavity of the plug (2) that can extend and retract through a hole provided on the cavity wall; and an annular groove (12) in the inner wall of the tube head (1) that can accommodate the pin head (77) of the positioning pin (7).

10. A quick fixing device for a pre-embedded beam sleeve according to any one of claims 1-7, characterized in that: The construction method is as follows: a. According to the requirements of the drawings, determine the position of the through sleeve (9) to be embedded on the beam template and mark it with a marker; according to the size of the cylinder on the plug (2), drill a hole at the center position marked with a marker on the beam template (10) for later use; b. At the position where the through sleeve (9) will be installed on the beam formwork, that is, at any position within the inner diameter of the through sleeve (9) to be installed on the beam formwork, screw a self-drilling screw, the length of which is exposed outside is shorter than the width of the plate-shaped body (25) connecting the cylinder (111) on the plug (2) and the inner wall of the plug. c. Insert the reset pin (8) into the plug (2) so that the pin head is exposed on the outer wall of the plug; wrap the disassembly groove (24) on the flange with tape to prevent the concrete from leaking into the cement slurry; d. During installation, first insert the cylindrical part (111) of the plug into the pre-drilled hole on the beam template (10), and then put the two pipe ends into the outside of the beam sleeve of the determined length (the width of the beam minus the length of the two plugs is the length of the beam sleeve). Place the end of the pipe end connected to the plug outside the two ends of the beam sleeve (10), and put the beam sleeve together with the two pipe ends (1) inside the beam into the place of the plug (2). Align the notch (13) between the two receiving grooves (11) on the pipe end with the lug (23) on the plug, and press the pin of the reset pin back into the pin. Insert gently and rotate clockwise. When the plug encounters the drill thread screw screwed on the beam template, it stops rotating. The pipe head continues to rotate. The lug (22) on the plug falls into the receiving groove (11) and is blocked by the ramp partition (14), so it stops rotating. After the pipe head rotates, the reset pin (8) on the plug passes the ramp partition (14) of the receiving groove (11) and you hear a click. This proves that the pin pops out and falls in front of the ramp partition. In this way, the pipe head and the plug are tightly connected. Even if the plug or the pipe head is reversed under the action of external force, the two will not separate. e. After the concrete is poured and the formwork is removed, tear off the tape on the disassembly groove (24) on the flange of the plug to expose the pin head of the reset pin (8). Use a flathead screwdriver or hacksaw blade to press the pin head back and rotate the plug counterclockwise. In this way, the plug can be removed smoothly and used again next time.

Images