A reinforcing steel positioning support for a super-large cross-section concrete frame beam and a method of use

Abstract

The application discloses a super-large-section concrete frame beam steel bar positioning support and relates to the technical field of building auxiliary equipment. A support mechanism is arranged at the upper end of a support foot, and a positioning and pulling mechanism is arranged above the support mechanism. The positioning and pulling mechanism comprises a height adjusting screw rod, the lower end of the height adjusting screw rod is fixedly connected with a connecting block, the lower end of the connecting block is hingedly connected with two hinged plates, and the lower end of each hinged plate is connected with an embedded pulling steel bar hook. The overall position of the positioning and pulling mechanism is adjusted through the height adjusting rod, the horizontal plate and the longitudinal adjusting plate, so that the device can adapt to the steel bar positioning operation of concrete frame beams with different sizes. The vertical height of the embedded pulling steel bar hook at the lower end is adjusted, and then the through-length steel bars at different heights and different layer positions in the beam are precisely positioned and pulled. Through the cooperation of the adjusting nut and the height adjusting screw rod, the acting force between the embedded pulling steel bar hook and the through-length steel bar can be adjusted in real time, so that the positioning stability and positioning precision of the device in the concrete pouring process are ensured.

Description

Technical Field

[0001] This invention relates to the field of building auxiliary equipment technology, and in particular to a positioning bracket for the reinforcing bars of an ultra-large cross-section concrete frame beam. Background Technology

[0002] With the development of modern building structures towards larger spans and heavier loads, ultra-large cross-section concrete frame beams are widely used in high-rise and large-space buildings. These frame beams have large cross-sectional dimensions, multiple layers and rows of internal steel reinforcement, and a large self-weight of the steel reinforcement cage. It is necessary to maintain the accurate design position after the beam formwork is installed and throughout the concrete pouring process to ensure the structural performance and forming quality of the frame beam.

[0003] Because the steel reinforcement cage and self-weight of ultra-large cross-section concrete frame beams are significantly higher than those of conventional beams, problems such as overall settlement, local displacement, waist collapse, and uneven protective layer thickness are prone to occur during concrete pouring. Without dedicated and reliable steel reinforcement positioning supports, relying solely on traditional spacers or simple supports is insufficient to effectively restrain the heavy steel reinforcement cage, affecting construction efficiency and reducing the structural safety and durability of the beam. Existing documents, such as a steel reinforcement installation system and construction method for ultra-high cross-section transfer structures, involve installing several hooks on the top supporting steel beams above the transfer structure. The bottom of the hooks connects to the horizontal spreader reinforcement of the frame columns. The reinforcement is not tied using conventional trestles, but rather by supporting the top supporting steel beams on the frame structure and then fixing the reinforcement with hanging devices. However, this existing technology involves installing hooks at multiple points, preventing arbitrary adjustments. Furthermore, it cannot simultaneously pull multiple sets of hooks.

[0004] Therefore, there is an urgent need for a reinforcement positioning bracket for ultra-large cross-section concrete frame beams to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a positioning bracket for the reinforcing bars of ultra-large cross-section concrete frame beams, which solves the technical problems of the existing concrete frame beams that are prone to overall sinking, local displacement, and collapse of the reinforcing bars.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A positioning bracket for reinforcing bars of an ultra-large cross-section concrete frame beam includes a supporting scaffold, a supporting mechanism installed at the upper end of the supporting scaffold, and several positioning and lifting mechanisms installed above the supporting mechanism.

[0008] The support mechanism includes multiple height adjustment rods, horizontal plates, and several longitudinal adjustment plates. The lower ends of the height adjustment rods are all provided with connecting pipes and inserted into the top of the support scaffold.

[0009] Two sets of height adjustment rods are connected to both ends of the horizontal plate. The height adjustment rods have multiple sets of position adjustment holes, and the height of the horizontal plate can be adjusted by using a matching pin.

[0010] The longitudinal adjustment plate is provided with a longitudinal adjustment slide, and the lifting mechanism is adapted to slide along the longitudinal adjustment slide.

[0011] The positioning and lifting mechanism includes a height adjusting screw, the lower end of which is fixedly connected to a connecting block. The lower end of the connecting block is hinged with two built-in lifting steel bar hooks, which are bidirectionally hooked onto the steel bars of the concrete frame beam.

[0012] In a further technical solution, the positioning and lifting mechanism also includes a limiting frame, which is snapped onto the longitudinal adjustment plate; a sliding hole is provided at the top of the limiting frame, the upper end of the height adjusting screw passes through the sliding hole and extends to the top of the limiting frame, and is fixed with an adjusting nut; the adjusting nut is threaded onto the height adjusting screw.

[0013] The height adjustment rod has a vertically set limit groove on its side wall, and a limit strip is set on the inner side wall of the sliding hole. The limit strip is adapted to slide within the limit groove.

[0014] In a further technical solution, the limiting frame is configured as a U-shape and bent downwards, with at least two auxiliary limiting plates fixedly connected to its lower side.

[0015] The lower end of the auxiliary limiting plate passes through the longitudinal adjustment slide and extends to the bottom of the longitudinal adjustment plate. The lower ends of the side walls on opposite sides of the two auxiliary limiting plates are fixedly connected with snap-fit ​​protrusions, which constrain the limiting frame from the longitudinal adjustment plate.

[0016] A locking screw is installed on the outside of the limiting frame. The locking screw passes through the side wall of the limiting frame and abuts against the side wall of the longitudinal adjusting plate. The locking screw is threadedly connected to the side wall of the limiting frame.

[0017] In a further technical solution, the horizontal plate is provided with a number of horizontal position holes, and the lower sides of both ends of the longitudinal adjustment plate are symmetrically provided with limit rods. The lower ends of the limit rods pass through the horizontal position holes and extend to the bottom of the horizontal plate.

[0018] In a further technical solution, each end of the horizontal plate facing the height adjustment rod is provided with a sleeve ring, and the sleeve ring is sleeved on the height adjustment rod;

[0019] Multiple sets of position adjustment holes are arranged vertically along the same axis. The sleeve ring has symmetrical through holes on both sides, and the axes of the two sets of through holes are parallel to the length direction of the horizontal plate. A mating pin is detachably installed inside the sleeve ring. The mating pin passes through one through hole, the position adjustment hole and the other through hole in sequence.

[0020] In a further technical solution, a pull ring is provided at one end of the mating pin, and a spring plate is fixedly connected to the end of the outer wall of the mating pin away from the pull ring; two sets of spring plates are provided and located on both sides of the mating pin, and the distance between the outer diameters of the two sets of spring plates in their natural state is greater than the diameter of the through hole.

[0021] In a further technical solution, the limiting frame is provided in three sets, with a first rack plate and a second rack plate respectively installed on the limiting frames on both sides, and the sides of the first rack plate and the second rack plate with the toothed shape facing each other.

[0022] A meshing gear is installed on the outside of the limiting frame in the middle. The meshing gear meshes with both the first rack plate and the second rack plate. An internal threaded hole is opened in the middle of the meshing gear, and the internal threaded hole is threadedly connected to the locking screw.

[0023] The outer end of the locking screw is provided with a fixing ring, and a pull strap is installed on the fixing ring; the outer diameter of the meshing gear is larger than the outer diameter of the end of the locking screw; the meshing gear is provided with a mounting ring groove on the side of the end of the locking screw, and a fixing post is installed on the surface of the meshing gear outside the mounting ring groove;

[0024] A friction ring washer is fitted onto the shaft of the locking screw, and one side of the friction ring washer is adapted to the mounting ring groove; the friction ring washer does not interfere with the fixing post.

[0025] In a further technical solution, a threaded hole and a middle hole are provided at the bottom of the limiting rod, a lower shaft is inserted into the middle hole, and an mounting part is installed on the lower shaft and fixed to the threaded hole by bolts;

[0026] A rotating wheel is mounted at the bottom of the lower shaft via a connecting bearing;

[0027] A mounting plate is synchronously installed at the bottom of the sleeve ring, and a second rotating wheel is installed at the bottom of the mounting plate. The second rotating wheel is sleeved outside the height adjustment rod.

[0028] The supporting scaffold is arranged in two parallel sets, and the pull belt is connected to the first rotating wheel and the second rotating wheel, with a traction rope installed in the middle.

[0029] A method for using a reinforcement positioning bracket for an ultra-large cross-section concrete frame further includes the following steps:

[0030] Step 1: Before pouring the concrete frame beam reinforcement, select an appropriate number of supporting scaffolding and support mechanisms according to the actual length of the concrete frame beam reinforcement, and select an appropriate number of positioning and lifting mechanisms according to the points that need to be fixed in the concrete frame beam reinforcement.

[0031] Step 2: First, place the supporting scaffolding securely directly below the reinforcing steel bars of the concrete frame beam, and connect the height adjusting rod to the supporting scaffolding through the connecting pipe at the lower end of the height adjusting rod.

[0032] Subsequently, the sleeve rings at both ends of the horizontal plate are placed on the height adjustment rod, and the mating pins are inserted and passed through the through holes to connect with the height adjustment rod. The spring plate on the mating pin is used to limit the movement and prevent the mating pin from slipping out of the position adjustment hole.

[0033] Next, the longitudinal adjustment plate and the horizontal plate are connected and fixed by the limiting rod at the lower end of the longitudinal adjustment plate cooperating with the transverse position hole on the horizontal plate.

[0034] Step 3: Select the appropriate length of built-in lifting bar hook according to the different positions of the continuous bars inside the concrete frame beam.

[0035] Place the limiting frame above the longitudinal adjustment plate, and pass the two auxiliary limiting plates through the longitudinal adjustment slide to adjust the position of the limiting frame. Then, use the locking screw to fix the position of the limiting frame. Next, hook the lower end of the built-in lifting steel bar hook onto the corresponding longitudinal steel bar.

[0036] Step 4: During the lifting and positioning process, by rotating the adjusting nut on the positioning lifting mechanism, the adjusting nut and the height adjusting screw are engaged to drive the height adjusting screw, connecting block, hinge plate and built-in lifting steel hook to adjust the vertical position simultaneously, thereby adjusting the lifting force between the built-in lifting steel hook and the continuous bar.

[0037] After the concrete is poured and reaches the set strength, the hinge plate is separated from the built-in lifting steel hook by cutting. The built-in lifting steel hook embedded in the concrete is permanently left to share the load with the concrete frame beam reinforcement. The rest of the exposed support can be removed and recycled.

[0038] In a further technical solution, in step 4, it is necessary to locate the longitudinal position of the concrete frame beam reinforcement, press down the fixed column and rotate the locking screw in the opposite direction to disengage from the limiting frame and the meshing gear;

[0039] The rotating fixed column drives the meshing gear to rotate, which causes the first rack plate and the second rack plate to move relative to each other, causing the built-in lifting steel bar hooks under the limit frames on both sides to move to the position of the corresponding longitudinal steel bar of the concrete frame beam; the built-in lifting steel bar hooks are then connected to the longitudinal steel bar.

[0040] Then, press down on the fixing post to thread the locking screw into the meshing gear and the limit frame;

[0041] During longitudinal traction, the traction rope drives the pull belt, which in turn moves the three sets of limit frames, thus moving the reinforcing steel bars of the concrete frame beam as a whole.

[0042] The present invention has the following beneficial effects:

[0043] 1. This invention provides a rebar positioning bracket for ultra-large cross-section concrete frame beams. By setting a height adjustment rod, a horizontal plate, and a longitudinal adjustment plate, the overall position of the positioning and lifting mechanism can be adjusted, enabling the device to adapt to rebar positioning operations for concrete frame beams with different cross-sectional dimensions and spans. The positioning and lifting mechanism can adjust the vertical height of the built-in rebar hook at the lower end according to construction needs, thereby achieving precise lifting and positioning of continuous rebars at different heights and layers within the beam.

[0044] 2. This invention provides a positioning bracket for reinforcing bars in ultra-large cross-section concrete frame beams. Through the coordination of adjusting nuts and height adjusting screws, the force between the built-in lifting hooks and the continuous reinforcing bars can be adjusted in real time, ensuring the positioning stability and accuracy of the device during concrete pouring. Furthermore, different numbers of positioning devices can be flexibly arranged according to the actual length of the concrete frame beam, providing multi-point support and positioning, further guaranteeing the positioning effect of the overall reinforcing bar skeleton.

[0045] 3. This invention uses a locking screw to lock and abut against the friction ring pad, thereby fixing it relative to the meshing gear and abutting against the limiting frame. An external traction rope pulls the belt, which maintains its height and direction through rotating wheels one and two, achieving synchronous traction of the positioning and lifting mechanisms on the two sets of support mechanisms. This synchronous traction moves the concrete frame beam reinforcement, thus overcoming the technical problem that the movement of a single limiting frame causes different directions of tension on the concrete frame beam reinforcement, resulting in deformation of the reinforcement and different surface stress. Attached Figure Description

[0046] Figure 1 This is a three-dimensional structural diagram of a single support mechanism and a positioning lifting mechanism according to Embodiment 1 of the present invention;

[0047] Figure 2 This is a three-dimensional structural diagram of the support mechanism of the present invention;

[0048] Figure 3 This is a three-dimensional structural diagram of the support mechanism of the present invention from another angle;

[0049] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0050] Figure 5 for Figure 3 Enlarged view of a section at point B in the middle;

[0051] Figure 6 This is a three-dimensional structural diagram of the positioning and lifting mechanism of the present invention;

[0052] Figure 7 This is a schematic diagram of the three-dimensional structure of the limiting frame of the present invention;

[0053] Figure 8 This is a schematic diagram of the three-dimensional structure for positioning the reinforcing bars of a concrete frame beam according to the present invention. Figure 1 ;

[0054] Figure 9 This is a schematic diagram of the three-dimensional structure for positioning the reinforcing bars of a concrete frame beam according to the present invention. Figure 2 ;

[0055] Figure 10 for Figure 9 Enlarged view of part C;

[0056] Figure 11 for Figure 9 Enlarged view of part D;

[0057] Figure 12 for Figure 9 Enlarged view of a portion at point E;

[0058] Figure 13 This is a schematic diagram of the support mechanism and positioning lifting mechanism of the present invention in Embodiment 2;

[0059] Figure 14 This is a cross-sectional view showing the connection between the limiting frame and the external locking screw of the present invention.

[0060] In the diagram: 1. Supporting scaffold; 2. Supporting mechanism; 201. Height adjusting rod; 202. Connecting pipe; 203. Position adjusting hole; 204. Sleeve ring; 205. Horizontal plate; 206. Lateral position hole; 207. Through hole; 208. Matching pin; 209. Spring plate; 210. Longitudinal adjusting plate; 211. Limiting rod; 212. Longitudinal adjusting slide.

[0061] 3. Positioning and lifting mechanism; 301. Limiting frame; 302. Auxiliary limiting plate; 303. Snap-fit ​​protrusion; 304. Sliding hole; 305. Limiting strip; 306. Height adjusting screw; 307. Limiting slide groove; 308. Adjusting nut; 309. Connecting block; 310. Hinge plate; 311. Built-in lifting steel bar hook; 312. Locking screw; 4. Reinforcing steel bar of concrete frame beam;

[0062] 50. First rack plate; 51. Second rack plate; 52. Meshing gear; 54. Fixing ring; 55. Pull belt; 521. Mounting ring groove; 522. Fixing post; 56. Friction ring pad; 57. Lower shaft; 58. Mounting disc; 59. Rotating wheel one; 60. Rotating wheel two; 61. Traction rope. Detailed Implementation

[0063] 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 some embodiments of the present invention, and not all 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.

[0064] Example 1

[0065] Please see Figures 1-8 This invention provides a technical solution, specifically a positioning bracket for reinforcing bars of ultra-large cross-section concrete frame beams, such as... Figure 1 As shown, the system includes a supporting scaffold 1, which provides a stable lower support foundation to bear the weight of the upper structure and heavy steel bars. A supporting mechanism 2 is installed at the upper end of the supporting scaffold, which is used to adjust the overall height and build an installation plane for the positioning and lifting mechanism 3. Several positioning and lifting mechanisms 3 are installed above the supporting mechanism 2, which are used to lift, position, and limit the continuous bars inside the steel bars 4 of the concrete frame beam to ensure that the position remains unchanged during the pouring process. A working platform can be erected on the supporting scaffold 1 to fix the steel bars of the concrete frame beam.

[0066] like Figure 2 As shown, the support mechanism 2 includes multiple height adjustment rods 201, a horizontal plate 205, and several longitudinal adjustment plates 210. The longitudinal adjustment plates 210 are used for longitudinal position adjustment, expanding the adaptability range of the positioning and lifting mechanism 3. In this embodiment... Figure 1 and 2 The system employs four height adjustment rods 201 and two horizontal plates 205. Each height adjustment rod 201 has a fixed connecting tube 202 at its lower end. The lower end of the connecting tube 202 extends into the longitudinal support tube of the supporting scaffold 1. The connecting tube 202 enables the height adjustment rod 201 to be quickly inserted and positioned into the supporting scaffold 1. The lower end of the height adjustment rod 201 abuts against the upper end of the longitudinal support tube of the supporting scaffold 1. The two horizontal plates 205 are located between the front and rear sets of height adjustment rods 201, respectively. A longitudinal adjustment slide 212 is provided on the longitudinal adjustment plate 210. The lifting mechanism 3 is adapted to slide along the longitudinal adjustment slide 212.

[0067] like Figure 6 As shown, the positioning and lifting mechanism 3 also includes a U-shaped limiting frame 301 and a height adjusting screw 306. The longitudinal adjusting plate 210 is located inside the limiting frame 301, and a sliding hole 304 is provided on the upper side wall of the limiting frame 301. A connecting block 309 is fixedly connected to the lower end of the height adjusting screw 306. Two hinge plates 310 are hinged to the lower end of the connecting block 309. The lower end of the hinge plate 310 is connected to a built-in lifting steel bar hook 311 by welding. The two built-in lifting steel bar hooks 311 are bidirectionally hooked to the steel bars 4 of the concrete frame beam.

[0068] The upper end of the height adjusting screw 306 passes through the sliding hole 304 and extends above the limiting frame 301. A longitudinally arranged limiting groove 307 is provided on the side wall of the height adjusting rod 201. Figure 7 As shown, a limiting strip 305 is fixedly connected to the inner wall of the sliding hole 304. The limiting strip 305 extends into the limiting groove 307 near the height adjusting screw 306. An adjusting nut 308 is provided on the limiting frame 301. The adjusting nut 308 is sleeved on the height adjusting screw 306 and is threadedly connected to the height adjusting screw 306. During the lifting and positioning process, by rotating the adjusting nut 308 on the positioning lifting mechanism 3, the threaded engagement between the adjusting nut 308 and the height adjusting screw 306 drives the height adjusting screw 306, the connecting block 309, the hinge plate 310, and the built-in lifting bar hook 311 to adjust their vertical positions simultaneously. This precisely adjusts the lifting force between the built-in lifting bar hook 311 and the continuous bar, ensuring that the entire device can maintain good positioning stability and positioning accuracy during concrete pouring and vibration, and effectively preventing problems such as sinking and deviation of the continuous bar.

[0069] The limiting frame 301 is U-shaped and bent downwards, with at least two auxiliary limiting plates 302 fixedly connected to its lower side. The auxiliary limiting plates 302 are used to limit the limiting frame 301 and prevent it from shaking. The lower end of the auxiliary limiting plate 302 passes through the longitudinal adjustment slide 212 and extends to below the longitudinal adjustment plate 210. The lower ends of the side walls on opposite sides of the two auxiliary limiting plates 302 are fixedly connected to snap-fit ​​protrusions 303, which constrain the limiting frame 301 from the longitudinal adjustment plate 210. A locking screw 312 is provided on the left side of the limiting frame 301. The locking screw 312 passes through the left side wall of the limiting frame 301 and abuts against the side wall of the longitudinal adjustment plate 210. The locking screw 312 is threadedly connected to the left side wall of the limiting frame 301.

[0070] like Figure 5 As shown, a number of transverse position holes 206 are provided on the horizontal plate 205. The transverse position holes 206 are used for the connection of the limiting rod 211 to realize the positioning of the longitudinal adjustment plate 210. The limiting rod 211 is symmetrically fixedly connected to the front and rear sides of the lower surface of the longitudinal adjustment plate 210. The lower end of the limiting rod 211 passes through the transverse position hole 206 and extends to the bottom of the horizontal plate 205.

[0071] like Figure 4As shown, both ends of the horizontal plate 205 are fixedly connected with a sleeve ring 204. The sleeve ring 204 is sleeved on the height adjustment rod 201. The height adjustment rod 201 has several position adjustment holes 203. The sleeve ring 204 has symmetrical through holes 207 on the left and right sides. The sleeve ring 204 has a mating pin 208 on the outside. The mating pin 208 passes through one through hole 207, the position adjustment hole 203 and the other through hole 207 in sequence.

[0072] like Figure 4 As shown, a pull ring is provided at one end of the mating pin 208 for easy insertion and removal. A spring plate 209 is fixedly connected to the outer wall of the mating pin 208 away from the pull ring. Two sets of spring plates 209 are provided and located on both sides of the mating pin 208. The distance between the outer diameters of the two sets of spring plates 209 in their natural state is greater than the diameter of the through hole 207. The spring plates 209 are used for elastic limiting to prevent the mating pin 208 from accidentally falling off.

[0073] Working principle: Before pouring the concrete frame beam reinforcement 4, a suitable number of supporting scaffolding 1 and supporting mechanisms 2 should be selected according to the actual length of the concrete frame beam reinforcement 4, and a suitable number of positioning and lifting mechanisms 3 should be selected according to the points that need to be fixed in the concrete frame beam reinforcement 4. First, the supporting scaffolding 1 is placed firmly directly below the concrete frame beam reinforcement 4. The height adjusting rod 201 is connected to the longitudinal support pipe of the supporting scaffolding 1 through the connecting tube 202 at the lower end of the height adjusting rod 201. Then, the sleeve rings 204 at both ends of the horizontal plate 205 are sleeved on the height adjusting rod 201, and the matching pins 208 are inserted and passed through the through hole 207 of the sleeve ring 204 and the position adjustment hole 203 of the height adjusting rod 201 in sequence. The spring plate 209 on the matching pin 208 is used to limit the movement and prevent the matching pin 208 from slipping out of the position adjustment hole 203, thereby fixing the relative position of the horizontal plate 205 and the height adjusting rod 201. Next, select an appropriate number of longitudinal adjustment plates 210, and use the limiting rod 211 at the lower end of the longitudinal adjustment plate 210 to cooperate with the transverse position hole 206 on the transverse plate 205 to complete the connection and fixation between the longitudinal adjustment plate 210 and the transverse plate 205; then, according to the different positions of the continuous reinforcement bars 4 in the concrete frame beam, select the corresponding length of built-in lifting reinforcement hooks 311, and use multiple built-in lifting reinforcement hooks 311 of different lengths to specifically lift and position the continuous reinforcement bars at different positions in the beam.

[0074] The limiting frame 301 is positioned above the longitudinal adjustment plate 210, and two auxiliary limiting plates 302 pass through the longitudinal adjustment slide 212 to adjust the position of the limiting frame 301. The position of the limiting frame 301 is then fixed using the locking screw 312. The hook at the lower end of the built-in lifting rebar hook 311 is then hooked onto the corresponding longitudinal rebar, applying an upward lifting force to the longitudinal rebar to achieve initial positioning. During the lifting and positioning process, the adjusting nut 308 on the positioning lifting mechanism 3 is rotated. The threaded engagement between the adjusting nut 308 and the height adjusting screw 306 drives the height adjusting screw 306, connecting block 309, hinge plate 310, and built-in lifting rebar hook 311 to simultaneously adjust their vertical positions. This precisely adjusts the lifting force between the built-in lifting rebar hook 311 and the longitudinal rebar, ensuring that the entire device maintains good positioning stability and accuracy during concrete pouring and vibration, effectively preventing problems such as sinking or displacement of the longitudinal rebar. After the concrete is poured and reaches the set strength, the hinge plate 310 is separated from the built-in lifting steel hook 311 by cutting. The built-in lifting steel hook 311 embedded in the concrete is permanently left to share the load with the beam. The rest of the exposed support can be removed and recycled.

[0075] This invention provides a rebar positioning bracket for ultra-large cross-section concrete frame beams. By incorporating a height adjustment rod, a horizontal plate, and a longitudinal adjustment plate, the overall position of the positioning and lifting mechanism can be adjusted, enabling the device to adapt to rebar positioning operations on concrete frame beams with different cross-sectional dimensions and spans. The positioning and lifting mechanism can adjust the vertical height of the built-in rebar hook at the lower end according to construction needs, thereby achieving precise lifting and positioning of continuous rebars at different heights and layers within the beam. Through the cooperation of the adjusting nut and the height adjustment screw, the force between the built-in rebar hook and the continuous rebar can be adjusted in real time, ensuring the positioning stability and accuracy of the device during concrete pouring. Furthermore, different numbers of positioning devices can be flexibly arranged according to the actual length of the concrete frame beam, providing multi-point support and positioning, further ensuring the positioning effect of the overall rebar skeleton.

[0076] Example 2

[0077] like Figure 9-14 As shown, another embodiment of the present invention is provided. Based on embodiment 1, the limiting frame 301 is provided in three sets. The limiting frame 301 on both sides is respectively equipped with a first rack plate 50 and a second rack plate 51. The sides of the first rack plate 50 and the second rack plate 51 with toothed shapes are arranged facing each other.

[0078] like Figure 10As shown, a meshing gear 52 is installed on the outer side of the limiting frame 301 in the middle. The meshing gear 52 meshes with both the first rack plate 50 and the second rack plate 51. An internal threaded hole is opened in the middle of the meshing gear 52, and the internal threaded hole is threadedly connected to the locking screw 312. Due to the limited adjustment range, no limiting strip is added to the ends of the first rack plate and the second rack plate to prevent the meshing gear from rotating.

[0079] like Figure 10 As shown, a retaining ring 54 is provided at the outer end of the locking screw 312, and a pull strap 55 is installed on the retaining ring 54; the outer diameter of the meshing gear 52 is larger than the outer diameter of the end of the locking screw 312; a mounting ring groove 521 is opened on the side of the meshing gear 52 opposite to the end of the locking screw 312, and a retaining post 522 is installed on the surface of the meshing gear 52 outside the mounting ring groove 521; a friction ring pad 56 is sleeved on the shaft of the locking screw 312, and one side of the friction ring pad 56 is adapted to the mounting ring groove 521; the friction ring pad 56 and the retaining post 522 do not interfere with each other.

[0080] like Figure 11 As shown, a threaded hole and a middle hole are provided at the bottom of the limiting rod 211. A lower shaft 57 is inserted into the middle hole. An mounting part is installed on the lower shaft 57 and fixed to the threaded hole by bolts. A rotating wheel 59 is installed at the bottom of the lower shaft 57 through a connecting bearing.

[0081] like Figure 12 As shown, a mounting plate 58 is synchronously provided at the bottom of the sleeve ring 204, and a rotating wheel 60 is installed at the bottom of the mounting plate 58. The rotating wheel 60 is sleeved on the outside of the height adjustment rod 201.

[0082] The supporting scaffold 2 is arranged in two parallel sets, and the pull strap 55 is wrapped around the rotating wheel 59 and the rotating wheel 60, and a traction rope 61 is installed in the middle.

[0083] When synchronous adjustment of the reinforcing steel in a concrete frame beam is required, moving only the limiting frame can easily cause uneven stress on the longitudinal bars of the concrete frame beam, resulting in tension in different directions and leading to deformation and uneven surface stress of the reinforcing steel. Therefore, a limiting frame located in the middle of the locking screw connection is connected to two other sets of limiting frames via first and second rack plates on both sides. Pulling with a traction rope drives the pull strap to move the two sets of fixing rings, thereby achieving the desired movement. Figure 9 The movement can be made to the lower right side. Similarly, a pull strap and traction rope can be installed on the other side to move it towards the upper left side.

[0084] A method for using a reinforcement positioning bracket for an ultra-large cross-section concrete frame further includes the following steps:

[0085] Step 1: Before pouring the concrete frame beam reinforcement 4, it is necessary to select an appropriate number of supporting scaffolding 1 and supporting mechanisms 2 according to the actual length of the concrete frame beam reinforcement 4, and select an appropriate number of positioning and lifting mechanisms 3 according to the fixed points in the concrete frame beam reinforcement 4; In this embodiment, two sets of supporting mechanisms and two corresponding sets of longitudinal adjustment plates are used.

[0086] Step 2: First, place the supporting scaffold 1 securely directly below the reinforcing steel bars 4 of the concrete frame beam, and connect the height adjusting rod 201 to the supporting scaffold 1 through the connecting tube 202 at the lower end of the height adjusting rod 201.

[0087] Subsequently, the sleeve rings 204 at both ends of the horizontal plate 205 are sleeved on the height adjustment rod 201, and the inserting pins 208 are inserted and passed through the through holes 207 to connect with the height adjustment rod 201. The spring plate 209 on the inserting pins 208 is used to limit the movement and prevent the inserting pins 208 from slipping out of the position adjustment hole 203.

[0088] Next, the longitudinal adjustment plate 210 and the horizontal plate 205 are connected and fixed by the limiting rod 211 at the lower end of the longitudinal adjustment plate 210 cooperating with the transverse position hole 206 on the horizontal plate 205.

[0089] Step 3: Select the corresponding length of built-in lifting bar hook 311 according to the different positions of the continuous bars inside the steel reinforcement 4 of the concrete frame beam;

[0090] Place the limiting frame 301 above the longitudinal adjustment plate 210, and let the two auxiliary limiting plates 302 pass through the longitudinal adjustment slide 212 to adjust the position of the limiting frame 301. Then, use the locking screw 312 to fix the position of the limiting frame 301. Next, hook the lower end of the built-in lifting steel bar hook 311 onto the corresponding longitudinal steel bar.

[0091] Step 4: During the lifting and positioning process, by rotating the adjusting nut 308 on the positioning lifting mechanism 3, the adjusting nut 308 and the height adjusting screw 306 are engaged to drive the height adjusting screw 306, the connecting block 309, the hinge plate 310 and the built-in lifting steel hook 311 to adjust their vertical positions simultaneously, thereby adjusting the lifting force between the built-in lifting steel hook 311 and the continuous steel bar.

[0092] After the concrete is poured and reaches the set strength, the hinge plate 310 is separated from the built-in lifting steel bar hook 311 by cutting. The built-in lifting steel bar hook 311 embedded in the concrete is permanently left and shares the force with the concrete frame beam steel bar 4. The rest of the exposed support can be removed and recycled.

[0093] like Figure 14As shown, in step 4, the longitudinal position of the concrete frame beam reinforcement 4 needs to be positioned. Press and hold the fixing column 522 and rotate the locking screw 312 in the opposite direction to disengage it from the limiting frame 310 and the meshing gear 52. Rotate the fixing column 522 to drive the meshing gear 52 to rotate, so that the first rack plate 50 and the second rack plate 51 move relative to each other, and drive the built-in lifting steel bar hooks 311 under the limiting frames 310 on both sides to move to the position of the corresponding concrete frame beam reinforcement 4 longitudinal reinforcement. Connect the built-in lifting steel bar hooks 311 to the longitudinal reinforcement. Then, press and hold the fixing column 522 to thread the locking screw 312 into the meshing gear 52 and the limiting frame 310. During longitudinal traction, the traction rope 61 drives the pull belt 55, which drives the three sets of limiting frames 301 to move, and the concrete frame beam reinforcement 4 moves as a whole.

[0094] This invention uses a locking screw to lock and abut against a friction ring pad, thereby fixing it relative to and against a limiting frame with the meshing gear. An external traction rope pulls the belt, which is kept in height and direction by rotating wheels one and two, achieving synchronous traction of the positioning and lifting mechanisms on two sets of support mechanisms. This synchronous traction moves the steel reinforcement of the concrete frame beam, thus overcoming the technical problem that the movement of a single limiting frame causes different directions of tension on the steel reinforcement of the concrete frame beam, resulting in deformation of the steel reinforcement and different surface stress.

[0095] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reinforcement positioning support for ultra-large cross-section concrete frame beams, comprising a supporting scaffold (1), characterized in that: A support mechanism (2) is installed at the upper end of the support scaffold (1), and several positioning and lifting mechanisms (3) are installed above the support mechanism (2). The support mechanism (2) includes multiple height adjustment rods (201), a horizontal plate (205) and several longitudinal adjustment plates (210). The lower ends of the height adjustment rods (201) are all provided with connecting tubes (202) and inserted into the top of the support scaffold (1). Two sets of height adjustment rods (201) are connected to the two ends of the horizontal plate (205). Multiple sets of position adjustment holes (203) are opened on the height adjustment rods (201), and the height of the horizontal plate (205) on the height adjustment rods (201) is adjusted by means of the matching pins (208). A longitudinal adjustment slide (212) is provided on the longitudinal adjustment plate (210), and the lifting mechanism (3) is adapted to slide along the longitudinal adjustment slide (212); The positioning and lifting mechanism (3) includes a height adjusting screw (306), and a connecting block (309) is fixedly connected to the lower end of the height adjusting screw (306). Two built-in lifting steel bar hooks (311) are hinged to the lower end of the connecting block (309). The two built-in lifting steel bar hooks (311) are bidirectionally hooked to the steel bars (4) of the concrete frame beam.

2. The reinforcement positioning bracket for ultra-large cross-section concrete frame beams according to claim 1, characterized in that: The positioning and lifting mechanism (3) further includes a limiting frame (301), which is snapped onto the longitudinal adjusting plate (210); the limiting frame (301) has a sliding hole (304) at the top, and the upper end of the height adjusting screw (306) passes through the sliding hole (304) and extends above the limiting frame (301), and is fixed by an adjusting nut (308); the adjusting nut (308) is threaded onto the height adjusting screw (306); The height adjustment rod (201) has a vertically arranged limiting groove (307) on its side wall, and a limiting strip (305) is provided on the inner side wall of the sliding hole (304). The limiting strip (305) is adapted to slide in the limiting groove (307).

3. The reinforcement positioning bracket for ultra-large cross-section concrete frame beams according to claim 2, characterized in that: The limiting frame (301) is U-shaped and bent downwards, and at least two auxiliary limiting plates (302) are fixedly connected to its lower side. The lower end of the auxiliary limiting plate (302) passes through the longitudinal adjustment slide (212) and extends to the lower part of the longitudinal adjustment plate (210). The lower ends of the side walls of the two auxiliary limiting plates (302) on opposite sides are fixedly connected with snap-fit ​​protrusions (303). The snap-fit ​​protrusions (303) constrain the limiting frame (301) to disengage from the longitudinal adjustment plate (210). A locking screw (312) is installed on the outside of the limiting frame (301). The locking screw (312) passes through the side wall of the limiting frame (301) and abuts against the side wall of the longitudinal adjusting plate (210). The locking screw (312) is threadedly connected to the side wall of the limiting frame (301).

4. The reinforcement positioning bracket for ultra-large cross-section concrete frame beams according to claim 1, characterized in that: The horizontal plate (205) has several horizontal position holes (206), and the lower sides of both ends of the longitudinal adjustment plate (210) are symmetrically provided with limit rods (211). The lower end of the limit rod (211) passes through the horizontal position holes (206) and extends to the bottom of the horizontal plate (205).

5. The reinforcement positioning bracket for ultra-large cross-section concrete frame beams according to claim 1, characterized in that: The horizontal plate (205) is provided with a sleeve ring (204) at both ends facing the height adjustment rod (201), and the sleeve ring (204) is sleeved on the height adjustment rod (201); Multiple sets of position adjustment holes (203) are arranged vertically along the same axis. The sleeve ring (204) has symmetrical through holes (207) on both sides, and the axes of the two sets of through holes (207) are parallel to the length direction of the horizontal plate (205). A mating pin (208) is detachably installed inside the sleeve ring (204). The mating pin (208) passes through one through hole (207), the position adjustment hole (203) and the other through hole (207) in sequence.

6. The reinforcement positioning bracket for ultra-large cross-section concrete frame beams according to claim 5, characterized in that: One end of the mating pin (208) is provided with a pull ring, and the outer side wall of the mating pin (208) away from the pull ring is fixedly connected with a spring plate (209); two sets of spring plates (209) are provided and located on both sides of the mating pin (208), and the outer diameter distance between the two sets of spring plates (209) is greater than the diameter of the through hole (207) in the natural state.

7. A reinforcement positioning bracket for ultra-large cross-section concrete frame beams according to claim 6, characterized in that, The limiting frame (301) is provided in three sets. The limiting frame (301) on both sides is respectively equipped with a first rack plate (50) and a second rack plate (51). The first rack plate (50) and the second rack plate (51) are arranged facing each other on the side with the toothed shape. A meshing gear (52) is installed on the outside of the limiting frame (301) in the middle. The meshing gear (52) meshes with the first rack plate (50) and the second rack plate (51). An internal thread hole is opened in the middle of the meshing gear (52), and the internal thread hole is threadedly connected to the locking screw (312). The outer end of the locking screw (312) is provided with a fixing ring (54), and a pull strap (55) is installed on the fixing ring (54); the outer diameter of the meshing gear (52) is larger than the end outer diameter of the locking screw (312); the meshing gear (52) has an installation ring groove (521) on the side of the end of the locking screw (312), and a fixing post (522) is installed on the surface of the meshing gear (52) outside the installation ring groove (521); The locking screw (312) has a friction ring pad (56) fitted on its shaft. One side of the friction ring pad (56) is adapted to the mounting ring groove (521). The friction ring pad (56) does not interfere with the fixing post (522).

8. A reinforcement positioning bracket for ultra-large cross-section concrete frame beams according to claim 7, characterized in that, A threaded hole and a middle hole are provided at the bottom of the limiting rod (211). A lower shaft rod (57) is inserted into the middle hole. An mounting part is installed on the lower shaft rod (57) and fixed to the threaded hole by bolts. The bottom of the lower shaft (57) is fitted with a rotating wheel (59) via a connecting bearing; A mounting plate (58) is synchronously provided at the bottom of the sleeve ring (204), and a rotating wheel (60) is installed at the bottom of the mounting plate (58). The rotating wheel (60) is sleeved outside the height adjustment rod (201). The supporting scaffold (2) is arranged in two parallel sets, and the pull strap (55) is wrapped around the rotating wheel one (59) and the rotating wheel two (60), and a traction rope (61) is installed in the middle.

9. A method for using a reinforcement positioning bracket for an ultra-large cross-section concrete frame, characterized in that, The system includes the large-section concrete frame reinforcement positioning bracket as described in claim 8, and further includes the following steps: Step 1: Before pouring the concrete frame beam reinforcement (4), it is necessary to select an appropriate number of supporting scaffolding (1) and supporting mechanism (2) according to the actual length of the concrete frame beam reinforcement (4), and select an appropriate number of positioning and lifting mechanisms (3) according to the fixed points in the concrete frame beam reinforcement (4). Step 2: First, place the supporting scaffold (1) securely directly below the concrete frame beam reinforcement (4), and connect the height adjusting rod (201) to the supporting scaffold (1) through the connecting tube (202) at the lower end of the height adjusting rod (201); Subsequently, the sleeve rings (204) at both ends of the horizontal plate (205) are sleeved on the height adjustment rod (201), and the mating pins (208) are inserted and passed through the through holes (207) to connect with the height adjustment rod (201). The spring plate (209) on the mating pins (208) is used to limit the movement and prevent the mating pins (208) from slipping out of the position adjustment hole (203). Next, the longitudinal adjustment plate (210) and the horizontal plate (205) are connected and fixed by the limiting rod (211) at the lower end of the longitudinal adjustment plate (210) cooperating with the transverse position hole (206) on the horizontal plate (205); Step 3: Select the corresponding length of built-in lifting bar hook (311) according to the different positions of the continuous bars in the concrete frame beam reinforcement (4). Place the limiting frame (301) above the longitudinal adjustment plate (210), and pass two auxiliary limiting plates (302) through the longitudinal adjustment slide (212) to adjust the position of the limiting frame (301). Then, use the locking screw (312) to fix the position of the limiting frame (301); then hook the hook at the lower end of the built-in lifting steel bar hook (311) onto the corresponding longitudinal steel bar. Step 4: During the lifting and positioning process, by rotating the adjusting nut (308) on the positioning lifting mechanism (3), the adjusting nut (308) and the height adjusting screw (306) are engaged to drive the height adjusting screw (306), connecting block (309), hinge plate (310) and built-in lifting bar hook (311) to adjust their vertical positions simultaneously, thereby adjusting the lifting force between the built-in lifting bar hook (311) and the continuous bar. After the concrete is poured and reaches the set strength, the hinge plate (310) and the built-in lifting steel bar hook (311) are separated by cutting. The built-in lifting steel bar hook (311) embedded in the concrete is permanently left and shares the force with the concrete frame beam steel bar (4). The rest of the exposed support can be removed and recycled.

10. A method for using a reinforcement positioning bracket for an ultra-large cross-section concrete frame according to claim 9, characterized in that, In step 4, the longitudinal position of the concrete frame beam reinforcement (4) needs to be positioned, and the locking screw (312) is rotated in the opposite direction by pressing the fixing column (522) to disengage from the limiting frame (310) and the meshing gear (52). The rotating fixed column (522) drives the meshing gear (52) to rotate, causing the first rack plate (50) and the second rack plate (51) to move relative to each other, causing the built-in lifting steel bar hooks (311) under the limit frames (310) on both sides to move to the position of the corresponding concrete frame beam steel bar (4) long bar; and connect the built-in lifting steel bar hooks (311) to the long bar; Then, press the fixing post (522) to thread the locking screw (312) into the meshing gear (52) and the limiting frame (310); During longitudinal traction, the traction rope (61) drives the pull belt (55), which in turn drives the three sets of limit frames (301) to move, and the concrete frame beam reinforcement (4) moves as a whole.

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