A channel rebar positioning device and construction method

Abstract

This invention discloses a channel rebar positioning device and construction method, including a sleeve with fixing components installed on both the upper and lower sides. The fixing components are detachably installed on the side wall of the sleeve. Each fixing component has a slot for a steel wire rope to pass through, allowing the sleeve to slide along the steel wire rope via the fixing component. Fasteners are also included for securing and releasing the steel wire rope. In use, multiple sleeves are used together. First, the fixing components are installed, passing through the steel wire rope. Distance is measured between adjacent sleeves, and the spacing between sleeves is planned according to the rebar insertion position. This spacing can be adjusted along the length of the steel wire rope through the slot of the fixing component. After meeting the spacing requirements, the steel wire rope is secured with fasteners to prevent secondary sliding of the fixing components along the steel wire rope and subsequent misalignment. This method can accurately locate the rebar insertion position and spacing, ensuring the quality of engineering construction.

Description

Technical Field

[0001] This invention belongs to the technical field of engineering construction equipment, and in particular relates to a channel rebar positioning device and construction method. Background Technology

[0002] In water conservancy projects, the construction of water channels involves first excavating surface soil to form trenches. Then, at the bottom of the trenches, according to the preset width of the water channel, a casting template is erected, and then concrete is poured and vibrated to form the bottom form of the water channel. Before the bottom form concrete dries, the side protection molds of the water channel are erected along the sides of the bottom form in a timely manner, and then the concrete of the side molds is poured to ensure that the bottom form and the side molds on both sides dry at the same time. The bottom form and side molds of the water channel used for forming become a whole, and the cross-section of the formed water channel is a U-shaped structure.

[0003] Because the side formwork and bottom formwork are vertically connected and poured in a specific order, the side formwork cracks and collapses at the junction with the bottom formwork due to the outward pressure from lateral forces when water flows through the channel laterally. To prevent easy cracking of the side and bottom formwork, rows of reinforcing bars are inserted along the sides of the bottom formwork before the side formwork is erected, serving as a steel reinforcement connection layer. Specifically, the lower ends of the reinforcing bars are vertically inserted into the undried bottom formwork concrete, and the upper portions of the reinforcing bars extend into the pouring groove of the side formwork. After the side formwork is poured, rows of reinforcing bars connect the bottom of the side formwork and the bottom formwork, greatly improving the load-bearing capacity of the side formwork.

[0004] The reinforcing bars inserted into the uncured bottom formwork concrete need to be arranged in rows and at equal intervals. However, when inserting reinforcing bars, they are easily misaligned, and the spacing of the reinforcing bars is difficult to control. Summary of the Invention

[0005] The purpose of this invention is to provide a channel reinforcement bar locator and construction method, which solves the problems of poor control of the spacing of the reinforcement bars used for positioning and connection during channel side formwork positioning construction, and the easy misalignment of adjacent reinforcement bars during installation.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: A channel rebar locator includes a hollow sleeve for inserting rebars. Fixing members are installed on both the upper and lower sides of the sleeve, and the fixing members are detachably installed on the side wall of the sleeve. Including a steel wire rope, the fixing member has a slot for the steel wire rope to pass through, and the sleeve slides along the steel wire rope through the fixing member; It also includes fasteners for securing and releasing the wire rope.

[0007] Furthermore, the fastener includes a stud with a tightening rope at its end. The tightening rope is annular and used to fit around the side wall of the sleeve. Both ends of the tightening rope are fixed to the end of the stud. It also includes a first nut, which is threadedly engaged with the stud.

[0008] The first nut has a flat side on one side and an annular protrusion on the other side of the sleeve. The annular protrusion is coaxially arranged with the inner hole of the first nut. The annular protrusion has a tapered groove between the inner ring side and the inner hole of the first nut. The outer ring side and the inner ring side of the annular protrusion have an arc transition.

[0009] The slot is opened on the end side of the stud, and is a radial slot formed by cutting along the length of the stud from the end side of the stud along the axis.

[0010] Furthermore, the fastener includes a second nut for fitting and screwing into the slotted side of the stud, and close to the first nut, for compression tightening and releasing of the wire rope passing through the slot. The stud is fitted with a rubber washer, which is annular and rests against the end of the first nut. The second nut is a wing nut. The lower end of the sleeve has a support plate, and a tapered anti-slip pin is fixed to the circumference of the support plate.

[0011] A construction method for a channel rebar locator includes the following steps. Step 1: First, install the fixing parts on both sides of the sleeve. The sleeve is 500mm long. Put the tightening rope on the sleeve. Measure to make the distance from the end of the sleeve to the sleeve port 100mm after the tightening rope is put on. Then, keep the stud still and turn the first nut to stretch and tighten the tightening rope and fix it to the side wall of the sleeve. Step 2: Arrange the sleeves for installing the fasteners in sequence, install the steel wire rope, which is divided into two strands, corresponding to the fasteners on the upper and lower sides of the sleeves respectively. Insert the steel wire rope into the groove of the stud and screw in the second nut to seal the groove. It is not necessary to screw it in to squeeze the first nut.

[0012] Step 3: Adjust the spacing between the sleeves according to the arrangement of the reinforcing bars. After measurement, keep the spacing at 300mm. Then continue to rotate the second nut until it is close to the first nut to complete the tightening of the wire rope. After locking the spacing of a single sleeve, fix the next sleeve in sequence until the preset length of sleeve arrangement is completed, similar to a rope ladder structure. Step 4: Transport the completed rope ladder structure from Step 3 to the construction site, fix the sleeves on the ends of the rope ladder structure, and after the first sleeve is aligned and positioned, insert a long steel bar along the inner hole of the sleeve and extend it through the bottom formwork to the ground surface to complete a relatively stable fixation. Then stretch the sleeve at the end of the rope ladder and extend it along the side of the bottom formwork. Stable fixation is required at the bend of the corresponding channel. The end sleeve of the stretched rope ladder is stably fixed, and the lower end of the connecting section sleeve is supported on the bottom formwork by a support plate. Step 5: Insert the reinforcing bars sequentially along the arranged sleeves. Insert the lower end of the reinforcing bar into the bottom formwork, and leave 150-200mm of space at the upper end of the sleeve corresponding to the top of the sleeve. After inserting the reinforcing bar, vibrate the upper end of the sleeve to ensure that the concrete and the reinforcing bar are in full contact. After the reinforcing bar is stable, remove the sleeve and proceed with subsequent construction such as setting up the formwork and pouring concrete.

[0013] The present invention has the following beneficial effects: The main components of the present invention are a combination of a fixing member and a sleeve. In use, multiple sleeves are used together. First, the fixing member is installed. The fixing member is installed at a position about 1 / 5 of the distance from the end of the sleeve. It is symmetrical on both sides of the sleeve. The fixing member passes through a steel wire rope. There are two steel wire ropes in total, which correspond to the fixing members on the same side of the sleeve. The sleeves are placed parallel to each other. After passing through the steel wire rope, the two steel wire ropes are tightened. The distance between adjacent sleeves is measured. The spacing between the sleeves is planned according to the insertion position of the reinforcing bar.

[0014] For sleeves that do not meet the spacing requirements, the spacing can be adjusted along the length of the wire rope through the slot of the fastener. After the spacing requirements are met, the wire rope is fixed with fasteners to prevent the fastener from sliding again along the wire rope and causing misalignment.

[0015] After completion, transport it to the construction site. First, fix the first sleeve, then pull the last sleeve to tighten the two steel wire ropes. Arrange them in sequence along the side of the bottom formwork. Keep the sleeve vertical while the steel wire ropes are tightened. The bottom of the sleeve is in contact with the concrete of the bottom formwork that is not completely dry. Insert the reinforcing bar through the inner hole of the sleeve. Determine the insertion depth of the reinforcing bar into the concrete according to the reserved length at the upper end of the sleeve corresponding to the reinforcing bar.

[0016] It can accurately locate the splicing position and spacing of reinforcing bars, ensuring the quality of engineering construction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 : Schematic diagram of the sleeve and reinforcing bar separation structure of the present invention.

[0019] Figure 2 : Schematic diagram of the second nut and stud mating structure of the present invention.

[0020] Figure 3 : Schematic diagram of the installation structure of the first nut of the present invention.

[0021] Figure 4 : Schematic diagram of the sleeve and bottom of the present invention.

[0022] Figure 5 : Schematic diagram of the combined installation structure of multiple sleeves, steel wire ropes and steel bars of the present invention.

[0023] Figure 6 : Schematic diagram of the on-site installation structure of the locator of this invention.

[0024] The components represented by each number in the attached diagram are listed below: sleeve 1, reinforcing bar 2, wire rope 6, groove 41, stud 4, tightening rope 42, first nut 3, annular protrusion 31, conical groove 32, second nut 5, rubber washer 7, support plate 11, and anti-slip nail 12. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] like Figures 1-3 As shown: A channel rebar locator includes a hollow sleeve 1 for inserting a rebar 2. Fixing components are installed on both the upper and lower sides of the sleeve 1, and these components are detachably installed on the side walls of the sleeve 1. The rebar is a threaded steel bar with a diameter of 6-8 mm. The inner diameter of the sleeve is 8-10 mm.

[0027] Includes a steel wire rope 6, and the fixing member has a slot 41 for the steel wire rope 6 to pass through, so that the sleeve 1 can slide along the steel wire rope 6 through the fixing member; the steel wire rope is a flexible rope made of twisted steel wires with a wire diameter of about 1.2mm, 7*7 strands, and a tensile strength of up to 80kg.

[0028] It also includes fasteners for securing and releasing the wire rope 6.

[0029] The main components of this invention are a combination of a fixing member and a sleeve. In use, multiple sleeves 1 are used together. First, the fixing member is installed. The fixing member is installed at a position about 1 / 5 away from the sleeve port side, corresponding to the two sides of the sleeve symmetrically. The fixing member passes through the steel wire rope 6. There are two steel wire ropes in total, each corresponding to the fixing member on the same side of the sleeve. The sleeves 1 are placed parallel to each other. After passing through the steel wire rope 6, the two steel wire ropes 6 are tightened. The distance between adjacent sleeves 1 is measured. The spacing between the sleeves 1 is planned according to the insertion position of the reinforcing bar 2.

[0030] For sleeves 1 that do not meet the spacing requirements, the spacing can be adjusted along the length of the wire rope 6 through the slot 41 of the fastener. After the spacing requirements are met, the wire rope 6 is fixed with fasteners to prevent the fastener from sliding twice along the wire rope 6 and causing misalignment.

[0031] After completion, transport it to the construction site. First, fix the first sleeve 1, then pull the last sleeve to tighten the two steel wire ropes and arrange them in sequence along the side of the bottom formwork. Keep the sleeve vertical while the steel wire ropes are tightened. The bottom of the sleeve 1 is in contact with the concrete of the bottom formwork that is not completely dry. Insert the reinforcing bar through the inner hole of the sleeve. Determine the insertion depth of the reinforcing bar into the concrete according to the reserved length of the reinforcing bar 2 at the upper end of the sleeve.

[0032] It can accurately locate the splicing position and spacing of the reinforcing bar 2, ensuring the quality of engineering construction.

[0033] like Figure 3 As shown: The fastener includes a stud 4, with a tightening rope 42 at one end. The tightening rope 42 is annular and is used to fit onto the side wall of the sleeve 1. Both ends of the tightening rope 42 are fixed to the ends of the stud 4. It also includes a first nut 3, which is threadedly engaged with the stud 4. The tightening rope 42 is a flexible rope structure made of multiple strands of steel wire. By fixing the stud 4 with a tool and then rotating the first nut 3, the stud 4 moves laterally away from the side wall of the sleeve 1 along its length under the threaded engagement, thereby tightening the tightening rope and squeezing the sleeve 1 to complete the locking.

[0034] One side of the first nut 3 is a flat side, and the other side of the sleeve 1 has an annular protrusion 31. The annular protrusion 31 is coaxially arranged with the inner hole of the first nut. The inner ring side of the annular protrusion 31 has a tapered groove 32 between it and the inner hole of the first nut. The outer ring side and the inner ring side of the annular protrusion 31 have an arc-shaped transition. The outer side of the first nut 3 is hexagonal, which facilitates auxiliary rotation with a wrench. The inner side has a cylindrical groove and a thread. When fixed, the tightening opening side of the first nut 3 formed by the tapered groove has an flared design, which forms an arc-shaped transition for the stretching of the tightening rope 42, preventing the tightening rope 42 from forming a chamfer with the first nut and hindering the movement of the tightening rope.

[0035] The slot 41 is formed on the end side of the stud 4, and is a radial groove cut along the length of the stud 4. When fixing the stud 4, a coin or similar object can be inserted into the slot 41 to apply force and keep the stud 4 stationary, thereby rotating the first nut 3. The slot 41 is mainly used for the wire rope 42 to be inserted along the slot, and also provides sliding space for the wire rope 6, facilitating the installation of the wire rope. The slot 41 has a flat structure with a certain radial depth. During installation, care should be taken to ensure that the direction of the slot is perpendicular to the axis of the sleeve 1, so that the wire rope 6 is perpendicular to the axis of the sleeve 1 after insertion.

[0036] like Figure 2As shown: The fastener includes a second nut 5, which is used to fit and screw into the slot side of the stud 4 and is close to the first nut 3. It is used to compress and release the wire rope 6 passing through the slot 41. The stud 4 is cut to form a slot, which does not affect the normal use of the outer thread. The second nut 5 can be fitted on it and screwed in to close the slot 41, preventing the wire rope 6 from falling off. At the same time, after screwing in, it can cooperate with the first nut 3 to complete the compression and tightening of the wire rope 6. When releasing the wire rope 6, it is not necessary to completely disengage from the second nut 5. It is only necessary to release the clamping state to complete the sliding of the sleeve 1 through the slot of the stud 4. Since the slot 41 has a certain radial depth, it can prevent angular deviation when sliding along the wire rope 6. When adjusting the distance between adjacent sleeves 1, it is necessary to keep the sleeves 1 parallel to each other. The radial depth of the slot 41 is just enough to allow movement along the length direction of the wire rope 6, preventing the wire rope 6 from deflecting in the corresponding length direction of the sleeve 1.

[0037] The stud 4 is fitted with a rubber washer 7, which is annular and rests against the end of the first nut 3. When the second nut 5 is screwed in, the rubber washer 7 is compressed to increase friction, preventing excessive compression that could deform the wire rope 6 or create weak points. The second nut 5 is a wing nut, which facilitates rotation and allows for easier screwing in and out without tools.

[0038] like Figure 4 As shown: The lower end of the sleeve 1 has a support plate 11, and a conical anti-slip nail 12 is fixed on the circumference of the support plate 11. This increases the contact area between the sleeve 1 and the bottom formwork concrete. The anti-slip nail 12 can penetrate into the concrete surface, improving stability and preventing misalignment of the reinforcing bars during insertion into the bottom formwork.

[0039] like Figures 5-6 The following is a construction method for a channel rebar locator, comprising the following steps: Step 1: First, install the fixing parts on both sides of the sleeve. The sleeve is 500mm long. Put the tightening rope on the sleeve. Measure to make the distance from the end of the sleeve to the sleeve port 100mm after the tightening rope is put on. Then, keep the stud still and turn the first nut to stretch and tighten the tightening rope and fix it to the side wall of the sleeve. Step 2: Arrange the sleeves for installing the fasteners in sequence, install the steel wire rope, which is divided into two strands, corresponding to the fasteners on the upper and lower sides of the sleeves respectively. Insert the steel wire rope into the groove of the stud and screw in the second nut to seal the groove. It is not necessary to screw it in to squeeze the first nut.

[0040] Step 3: Adjust the spacing between the sleeves according to the arrangement of the reinforcing bars. After measurement, keep the spacing at 300mm. Then continue to rotate the second nut until it is close to the first nut to complete the tightening of the wire rope. After locking the spacing of a single sleeve, fix the next sleeve in sequence until the preset length of sleeve arrangement is completed, similar to a rope ladder structure. Step 4: Transport the completed rope ladder structure from Step 3 to the construction site, fix the sleeves on the ends of the rope ladder structure, and after the first sleeve is aligned and positioned, insert a long steel bar along the inner hole of the sleeve and extend it through the bottom formwork to the ground surface to complete a relatively stable fixation. Then stretch the sleeve at the end of the rope ladder and extend it along the side of the bottom formwork. Stable fixation is required at the bend of the corresponding channel. The end sleeve of the stretched rope ladder is stably fixed, and the lower end of the connecting section sleeve is supported on the bottom formwork by a support plate. Step 5: Insert the reinforcing bars sequentially along the arranged sleeves. Insert the lower end of the reinforcing bar into the bottom formwork, and leave 150-200mm of space at the upper end of the sleeve corresponding to the top of the sleeve. After inserting the reinforcing bar, vibrate the upper end of the sleeve to ensure that the concrete and the reinforcing bar are in full contact. After the reinforcing bar is stable, remove the sleeve and proceed with subsequent construction such as setting up the formwork and pouring concrete.

[0041] These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention.

Claims

1. A channel rebar positioning device, characterized in that: Includes a sleeve (1), which is hollow and used to insert a reinforcing bar (2). The upper and lower sides of the sleeve (1) are equipped with fasteners, which are detachably installed on the side wall of the sleeve (1). Includes a steel wire rope (6), and the fixing member has a slot (41) for the steel wire rope (6) to pass through, so that the sleeve (1) can slide along the steel wire rope (6) through the fixing member; It also includes fasteners for securing and releasing the wire rope (6).

2. The channel reinforcement bar locator according to claim 1, characterized in that: The fastener includes a stud (4), and a tightening rope (42) is provided at the end of the stud (4). The tightening rope (42) is annular and is used to fit the side wall of the sleeve (1). Both ends of the tightening rope (42) are fixed to the end of the stud (4). It also includes a first nut (3), which is threadedly engaged with the stud (4).

3. The channel reinforcement bar locator according to claim 2, characterized in that: The first nut (3) has a planar side on one side and an annular protrusion (31) on the other side of the sleeve (1). The annular protrusion (31) is coaxially arranged with the inner hole of the first nut. The annular protrusion (31) has a tapered groove (32) between the inner ring side and the inner hole of the first nut. The outer ring side and the inner ring side of the annular protrusion (31) are arc-shaped transitions.

4. The channel reinforcement bar locator according to claim 2, characterized in that: The slot (41) is opened on the end side of the stud (4), and is a radial slot cut along the length direction of the stud (4) by opening along the axis on the end side of the stud (4).

5. The channel reinforcement bar locator according to claim 4, characterized in that: The fastener includes a second nut (5) for fitting and screwing into the slot side of the stud (4) and close to the first nut (3) for compressing and releasing the wire rope (6) passing through the slot (41).

6. The channel reinforcement bar locator according to claim 5, characterized in that: The stud (4) is fitted with a rubber washer (7), which is annular and abuts against the end of the first nut (3).

7. The channel reinforcement bar locator according to claim 5, characterized in that: The second nut (5) is a wing nut.

8. The channel reinforcement bar locator according to claim 1, characterized in that: The lower end of the sleeve (1) has a support plate (11), and a conical anti-slip nail (12) is fixed on the circumferential side of the support plate (11).

9. The construction method of the channel rebar positioning device according to claim 1, characterized in that: It includes the following steps, Step 1: First, install the fixing parts on both sides of the sleeve. The sleeve is 500mm long. Put the tightening rope on the sleeve. Measure to make the distance from the end of the sleeve to the sleeve port 100mm after the tightening rope is put on. Then, keep the stud still and turn the first nut to stretch and tighten the tightening rope and fix it to the side wall of the sleeve. Step 2: Arrange the sleeves for installing the fasteners in sequence, install the steel wire rope, the steel wire rope is divided into two strands, corresponding to the fasteners on the upper and lower sides of the sleeve respectively, insert the steel wire rope into the groove of the stud, and screw in the second nut to seal the groove. It is not necessary to screw it in to squeeze the first nut. Step 3: Adjust the spacing between the sleeves according to the arrangement of the reinforcing bars. After measurement, keep the spacing at 300mm. Then continue to rotate the second nut until it is close to the first nut to complete the tightening of the wire rope. After locking the spacing of a single sleeve, fix the next sleeve in sequence until the preset length of sleeve arrangement is completed, similar to a rope ladder structure. Step 4: Transport the completed rope ladder structure from Step 3 to the construction site, fix the sleeves on the ends of the rope ladder structure, and after the first sleeve is aligned and positioned, insert a long steel bar along the inner hole of the sleeve and extend it through the bottom formwork to the ground surface to complete a relatively stable fixation. Then stretch the sleeve at the end of the rope ladder and extend it along the side of the bottom formwork. Stable fixation is required at the bend of the corresponding channel. The end sleeve of the stretched rope ladder is stably fixed, and the lower end of the connecting section sleeve is supported on the bottom formwork by a support plate. Step 5: Insert the reinforcing bars sequentially along the arranged sleeves. Insert the lower end of the reinforcing bar into the bottom formwork, and leave 150-200mm of space at the upper end of the sleeve corresponding to the top of the sleeve. After inserting the reinforcing bar, vibrate the upper end of the sleeve to ensure that the concrete and the reinforcing bar are in full contact. After the reinforcing bar is stable, remove the sleeve and proceed with subsequent construction such as setting up the formwork and pouring concrete.

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