A tension-controllable upper pull-rod scaffolding convenient for spot inspection

Abstract

The present invention provides a tension-controllable upper pull rod scaffolding convenient for random inspection, comprising an upper hanging pull seat assembly A, a pull-tab closed hook pull rod assembly, an I-beam assembly F, and an arc flower basket assembly D; the pull-tab closed hook pull rod assembly comprises an upper pull-tab closed hook pull rod B and a lower pull-tab closed hook pull rod C; the upper hanging pull seat assembly A is connected to an anchor of a structural member under construction; the upper pull-tab closed hook pull rod B and the lower pull-tab closed hook pull rod C are respectively connected to the upper hanging pull seat assembly A and the I-beam assembly F to realize an openable and closable hook connection; the arc flower basket assembly D is connected between the upper pull-tab closed hook pull rod B and the lower pull-tab closed hook pull rod C to realize controllable tension of the upper pull frame. The present invention realizes a tension-controllable upper pull rod scaffolding convenient for random inspection.

Description

Technical Field

[0001] The invention relates to the field of pull-up scaffolds, and in particular to a pull-up rod scaffold with controllable tension and convenient for random inspection. Background Art

[0002] Compared with the traditional segmented cantilever scaffolding, the pull-up scaffolding has many advantages, so it is widely used in current construction practice. However, as a new type of temporary structure, there is currently no national unified standard or specification, so there are still some serious problems: for example, Jiangsu Provincial Local Standard JGJ32 / J121-2011 Section 3.2.5 and Yunnan Provincial DBJ53 / T-116-2021 Section 3.1.2 require that the upper hanging support of the flower basket screw and the building anchor bolts must not be less than two, but in actual projects, all single bolts are used, which does not meet the requirements of the specification and also poses a major safety hazard; for example, there is no standard basis for the tensioning standard of the flower basket screw. In construction practice, it depends entirely on the workers' judgment based on their feelings, resulting in huge differences in tensioning results. Most of them are either under-tensioned or over-tensioned, and even serious over-tensioning is common. The turnbuckle screw is a very important load-bearing component of the pull-up scaffolding. Whether there is a problem with the lifting point, or whether the turnbuckle screw is under-tensioned, over-tensioned or seriously over-tensioned, it is a major safety hazard and can even directly lead to a major safety accident. Summary of the invention

[0003] In view of the defects in the prior art, the object of the present invention is to provide a tension-controllable upper pull rod scaffolding which is convenient for random inspection.

[0004] According to the present invention, a tension-controllable and easy-to-sample upper pull rod scaffolding is provided, comprising an upper hanging pull seat assembly A, a pull piece closed hook pull rod assembly, an I-beam assembly F, and an arc basket assembly D;

[0005] The pull-tab closed hook pull rod assembly comprises an upper pull-tab closed hook pull rod B and a lower pull-tab closed hook pull rod C;

[0006] The upper suspension seat assembly A is anchored and connected to the structural member under construction;

[0007] The upper pull-piece closed hook pull rod B and the lower pull-piece closed hook pull rod C are respectively connected to the upper suspension seat assembly A and the I-beam assembly F to realize an openable and closable hook connection;

[0008] The arc basket assembly D is connected between the upper pull piece closed hook head pull rod B and the lower pull piece closed hook head pull rod C, so as to realize the controllable tensioning of the upper pull frame of the scaffold.

[0009] Further, the upper suspension seat assembly A is provided with a steel plate with a central perforation, a long nut, and h;

[0010] The long nut is welded on the central through hole of the steel plate; the bolt end of the first bolt eye is screwed into the long nut;

[0011] At least one pair of tolerance adjustment holes is provided on the steel plate, and the upper suspension seat assembly A adaptively installs two first long bolts on the under-construction structural member with reserved through-wall bolt holes through the pair of tolerance adjustment holes to achieve anchor connection.

[0012] Furthermore, the pull-tab closed hook pull rod assembly includes a steel bar pull rod, a pressure dispersion pipe, an L-shaped pull tab Q, and a pull tab lock nut P;

[0013] The steel bar pull rod is provided with left and right threaded sections, and a first circular hole for the pin to be passed through is opened near the left end of the steel bar pull rod. The left end threaded section of the steel bar pull rod is used to connect with the arc basket assembly D;

[0014] The right end of the steel bar pull rod and the pressure dispersion pipe sleeved on the steel bar pull rod and fixed by the first nut are bent into a hook shape as a whole to form a pull rod hook;

[0015] The pull rod hook head and the L-shaped pull tab Q are hooked and anchored on the upper hanging pull seat assembly A through a pull tab lock nut P.

[0016] Further, the L-shaped pull tab Q includes an L-shaped steel plate and a semicircular steel plate; the pull tab lock nut P includes a common body and a second nut;

[0017] The left end of the L-shaped steel plate is rectangular, and a semicircular steel plate is pierced and plug-welded after a rectangular hole is opened. A third circular hole is opened in the center of the semicircular steel plate, and the third circular hole is larger than the outer diameter of the steel bar pull rod; the right end of the L-shaped steel plate is semicircular, and a second circular hole is opened in the middle. The screw and nut community with threads on both the inside and outside with a gasket is passed through the second circular hole and treated as a screw, and the second nut is screwed on, and then the second nut is welded to the community. The second circular hole is larger than the outer diameter of the screw and nut community to ensure that the community and the second nut can rotate freely in the second circular hole after being welded into a whole but will not fall off from the second circular hole at the right end of the L-shaped steel plate to become a pull tab lock nut P. At this time, the semicircular steel plate, steel plate, and pull tab lock nut P that have been welded and assembled into a whole together form an L-shaped pull tab Q for hook closure.

[0018] Furthermore, the arc basket assembly D includes a basket frame, a core-filling nut, a first inspectable bolt section, a second inspectable bolt section, and a connecting joint;

[0019] The upper and lower ends of the flower basket frame are respectively screwed into the core-bushing nuts and tightened with pins, and a thick hexagonal ring is provided on the top of the core-bushing nut; a through hole with an internal thread is opened in the center of the core-bushing nut at the upper end of the flower basket frame for connecting the first inspectable bolt section; a through hole with an internal thread is opened in the center of the core-bushing nut at the lower end of the flower basket frame for connecting the second inspectable bolt section; the arc flower basket assembly D is connected to the pull-tab closed hook-type pull rod assembly through a connecting joint.

[0020] Furthermore, a composite multifunctional bolt head is provided at the bottom end of the first inspectable bolt section, and together with a core-filling nut with a thick hexagonal ring that can be removed from the upper end of the flower basket frame, constitute a first inspectable bolt pair X.

[0021] The second inspectable bolt section is provided with a hexagonal bolt head, and together with a bushing nut with a thick hexagonal ring which can be removed from the lower end of the flower basket frame, constitutes a second inspectable bolt pair Y.

[0022] Furthermore, a tightening force transmission reinforcement zone Z is provided in the middle of the height of the flower basket frame, and four round holes evenly distributed at 90° intervals on the circumference of the reinforcement zone Z are used for tightening and tensioning after a torque wrench is inserted.

[0023] Furthermore, one end of the connection joint is connected to the first inspectable bolt section or the second inspectable bolt section through a transverse pin; the other end of the connection joint is connected to the pull-tab closed hook-type pull rod assembly through a transverse pin.

[0024] Further, the I-beam assembly F includes a basic steel beam, a fourth nut, a second bolt eye, a connecting end plate, and a through-wall screw;

[0025] The upper and lower flange plates at the right outer end of the foundation steel beam are each provided with an eighth circular hole, and the web plate between the upper and lower eighth circular holes is cut off to form a rectangular window; the fourth nut is inserted into the eighth circular holes of the upper and lower flanges of the foundation steel beam and the rectangular window of the web plate and fixed by welding; one end of the bolt of the second bolt lifting ring is screwed into the fourth nut to achieve fixed connection with the foundation steel beam; the I-beam assembly F is connected to the closed hook pull rod C of the lower pull plate through the second bolt lifting ring;

[0026] A connecting end plate is welded to the left end of the foundation steel beam. The through-wall screw passes through the bolt hole opened on the connecting end plate to fix the connecting end plate to the outside of the structural member under construction, completing the installation of the steel beam serving as the foundation of the scaffolding upright and the outside of the structural member under construction.

[0027] Furthermore, it also includes a reset mark assembly E; the angle reset mark assembly E includes a short rod round head bolt, a screw pointer, and a scale arc plate;

[0028] A threaded hole is opened on the side of the head of the short-stem round head bolt, and the screw pointer is screwed into the threaded hole to complete the assembly, and then the short screw of the short-stem round head bolt of the assembly is screwed into the head of the composite multifunctional bolt;

[0029] Three second countersunk threaded holes are provided at 120° apart on the side surface near the lower end of the composite multifunctional bolt head. One of the second countersunk threaded holes can be selected for easy operation to screw in the second countersunk threaded bolt, and the short-shank round head bolt screwed into the composite multifunctional bolt head can be locked with the composite multifunctional bolt head to prevent relative rotation.

[0030] The scale arc plate can fit with the inner arc of the flower basket frame, and the scale arc plate is vertically drawn with scale lines extending up and down;

[0031] First, take the reading scale line of the scale arc plate currently pointed to by the screw pointer as the starting point, rotate the basket nut formed by the basket frame and the core-locking nuts assembled and locked at both ends in the loosening direction, and drive the scale arc plate fitted on its inner arc surface to rotate synchronously, and the screw pointer is installed on the composite multifunctional bolt head of the first inspectable bolt section with the short rod round head bolt, and is fixed by the second countersunk head jacking bolt screwed into any convenient second countersunk head jacking threaded hole without rotation, so as to achieve the goal of observing the rotation of the basket nut. The synchronously rotating scale arc plate deviates from the reading of the fixed screw pointer during loosening, and the angle of loosening is accurately controlled to be 60°; then the torque wrench is used to rotate the basket nut in the direction of re-tightening until the scale arc plate mounted on its inner arc surface synchronously rotates to the starting point reading scale line before loosening, that is, when it is re-aligned with the screw pointer that has not been rotated, the loosened 60° basket nut is re-set and tightened. At this time, the torque value displayed by the torque wrench is the final tensioning construction torque that actually existed before the random inspection.

[0032] Compared with the prior art, the present invention has at least the following beneficial effects:

[0033] 1. The upper pull rod suspension seat assembly of the present invention meets the requirements of the existing provincial local standards that the upper suspension support and the building anchor bolts must have no less than two bolts, and maximizes the tolerance of the suspension support to the deviation of the reserved holes or embedded bolts, thereby improving the convenience of construction operation;

[0034] 2. The present invention is equipped with a pull-tab closed hook-type pull rod with a built-in pressure dispersion tube. The hook can be opened for easy operation when it is installed and removed, and can be closed during operation, which can prevent it from falling off. More importantly, the pull-tab is in a tensile state to transfer the load, so that the hook is no longer in a cantilever state, and the bearing capacity of the closed hook is doubled compared with that of the open hook. At the same time, the compressive stress dispersion sleeve of the hook is clamped between the hook and the lifting ring to increase the pressure area of ​​the lifting ring, reduce the compressive stress and increase the bearing capacity. For the hook, the pressure is dispersed to a larger contact surface of the hook, which greatly reduces the compressive stress, which is directly equivalent to the disappearance of the dangerous cross-section of the hook, thereby greatly improving the bearing capacity and safety.

[0035] 3. The present invention realizes the scientific construction of controlling the tension of the scaffolding basket screw according to the set torque, which completely changes the current situation in the entire construction industry where the tension of the scaffolding basket screw depends entirely on the workers' feeling. It completely eliminates the unreliability of the prior art of tensioning by feeling, which causes major safety hazards due to either under-tensioning or over-tensioning with huge differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0037] Figure 1 It is a structural schematic diagram of an upper pull rod scaffolding with controllable tension and convenient for random inspection according to the present invention;

[0038] Figure 2 It is a structural schematic diagram of the upper hanging pull seat assembly A of the present invention;

[0039] Figure 3 It is a structural schematic diagram of the pull tab hook closing pull rod assembly of the present invention;

[0040] Figure 4 It is a structural schematic diagram of the arc flower basket assembly D of the present invention;

[0041] Figure 5 The structural diagram of the I-beam assembly F of the present invention is

[0042] The figure shows:

[0043]

[0044] DETAILED DESCRIPTION

[0045] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0046] Example 1

[0047] The present embodiment provides an upper pull rod scaffolding with controllable tension and convenient for random inspection, comprising an upper hanging pull seat assembly A, a pull-tab closed hook pull rod assembly, an I-beam assembly F, and an arc basket assembly D; the pull-tab closed hook pull rod assembly comprises an upper pull-tab closed hook pull rod B and a lower pull-tab closed hook pull rod C; the upper hanging pull seat assembly A is anchored to the structural member under construction; the upper pull-tab closed hook pull rod B and the lower pull-tab closed hook C are respectively connected to the upper hanging pull seat assembly A and the I-beam assembly F to achieve an openable and closable hook connection; the arc basket assembly D is connected between the upper pull-tab closed hook pull rod B and the lower pull-tab closed hook pull rod C to achieve controllable tensioning of the upper pull frame of the scaffolding.

[0048] Specifically, the upper suspension seat assembly A is provided with a steel plate with a central through hole, a long nut 4 , and a first bolt eye 6 ; the long nut 4 is welded to the central through hole of the steel plate; and the first bolt eye 6 is screwed into the long nut 4 .

[0049] At least one pair of tolerance adjustment holes is provided on the steel plate, and the upper suspension seat assembly A uses the pair of tolerance adjustment holes to adaptively install the two first long bolts 7 on the under-construction structural member with the reserved through-wall bolt holes to achieve anchor connection. In particular, the steel plate can be a round steel plate, as shown in FIG. Figure 2 As shown, a pair of far-to-far tolerance adjustment holes 2 and a pair of near-to-far tolerance adjustment holes 3 are opened on the round steel plate 1. If the reserved through-wall bolt hole deviates away from the center position, the pair of far-to-far tolerance adjustment holes 2 in the horizontal position are used. If the reserved through-wall bolt hole deviates toward the center position, the round steel plate 1 is rotated so that the pair of near-to-far tolerance adjustment holes 3 are changed from the vertical state to the horizontal state and then put into use. As long as the center of the round steel plate 1 is located at the center of the inclined line and then rotated, there is always a suitable tolerance adjustment hole in the far-to-far tolerance adjustment hole 2 or the near-to-far tolerance adjustment hole 3 to meet the installation needs.

[0050] The pull-tab closed hook pull rod assembly includes a steel pull rod 8, a pressure dispersion tube 9, an L-shaped pull tab Q, and a pull tab lock nut P; threaded sections are opened at both ends of the steel pull rod 8, and a first circular hole 8-1 that can be crossed by a pin is opened at the left end near the end of the steel pull rod 8. The left end threaded section of the steel pull rod 8 is used to connect with the arc basket assembly D, and the right end threaded section of the steel pull rod 8 is in a parallel state with the long straight section after the hook is formed, and is used to connect with the L-shaped pull tab Q through the pull tab lock nut P.

[0051] The L-shaped pull tab Q includes an L-shaped steel plate 12 and a semicircular steel plate 13; the pull tab lock nut P includes a body 14 and a second nut 15; the left end of the L-shaped steel plate 12 is rectangular, and a semicircular steel plate 13 is punched and plug-welded after a rectangular hole is opened, and a third circular hole 13-1 is opened in the center of the semicircular steel plate 13, and the third circular hole 13-1 is slightly larger than the outer diameter of the steel bar pull rod 8; the right end of the L-shaped steel plate 12 is semicircular, and a second circular hole 12-1 is opened in the middle, and the screw nut body 14 with a gasket and threads on both the inside and outside is passed through the second circular hole 12-1 and treated as a screw, and screwed The second nut 15 is then installed, and then the second nut 15 and the community 14 are welded. The second circular hole 12-1 is slightly larger than the outer diameter of the screw nut community 14, ensuring that the community 14 and the second nut 15 can rotate freely in the second circular hole 12-1 after being welded into a whole, but will not fall off from the second circular hole 12-1 at the right end of the L-shaped steel plate 12, forming a pull tab lock nut P. At this time, the semicircular steel plate 13, L-shaped steel plate 12, and pull tab lock nut P that have been welded and assembled into a whole form a component together, which can be called an L-shaped pull tab Q for a hook-shaped closing pull tab.

[0052] After welding the first nut 10 to one end of the pressure dispersion tube 9, screw the end with the first nut 10 into the screw of the community 14, and insert the other end of the pressure dispersion tube 9 into the right end of the steel bar tie rod 8. While twisting the first nut 10, push the pressure dispersion tube 9 to move from right to left on the steel bar tie rod 8 until the first nut 10 cannot be twisted, and then fix the pressure dispersion tube 9 on the steel bar tie rod 8. Then, the right end of the steel bar tie rod 8 together with the pressure dispersion tube 9 fixed by the first nut 10 on the steel bar tie rod 8 are bent into a hook shape as a whole to form a tie rod hook. The upper suspension seat assembly A is hooked with the tie rod hook through the first bolt eye 6.

[0053] The arc basket assembly D includes a basket frame 16, a bushing nut 17, a first inspectable bolt section 18, and a second inspectable bolt section 19; the bushing nuts 17 are respectively screwed into the upper and lower ends of the basket frame 16 and tightened and fixed, and a thick hexagonal ring is provided on the top of the bushing nut 17; a through hole with an internal thread is opened in the center of the bushing nut 17 at the upper end of the basket frame 16, which is used to connect the first inspectable bolt section 18; a through hole with an internal thread is opened in the center of the bushing nut 17 at the lower end of the basket frame 16, which is used to connect the second inspectable bolt section 19.

[0054] The lower end of the first inspectable bolt section 18 is provided with a composite multifunctional bolt head 18-2, which together with a core-filling nut 17 with a thick hexagonal ring that can be removed from the upper end of the flower basket frame 16 constitutes a first inspectable bolt pair X.

[0055] The second inspectable bolt section 19 is provided with a hexagonal bolt head, and together with the bushing nut 17 with a thick hexagonal ring which can be removed from the lower end of the flower basket frame 16, constitutes the second inspectable bolt pair Y.

[0056] A tightening force transmission strengthening area Z is provided in the middle of the height of the flower basket frame 16. Four round holes evenly distributed at 90° intervals on the circumference of the strengthening area Z are used for inserting a matching special torque wrench for tightening and tensioning.

[0057] One end of the connection joint 23 is connected to the first inspectable bolt section 18 or the second inspectable bolt section 19 via a transverse pin 23 - 4 ; the other end of the connection joint 23 is connected to the steel bar pull rod 8 via a transverse pin 23 - 4 .

[0058] The rotation angle reset mark assembly E includes a short rod round head bolt 24, a screw pointer 25, a scale arc plate 26, and a stainless steel ear plate 27; a threaded hole 24-1 is opened on the side of the head of the short rod round head bolt 24, and the screw pointer 25 is screwed into the threaded hole 24-1 to complete the assembly, and then the short screw of the short rod round head bolt 24 of the assembly is screwed into the composite multifunctional bolt head 18-2;

[0059] The composite multifunctional bolt head 18-2 is provided with three second countersunk threaded holes 18-2-4 spaced 120° apart near the lower end side surface. One of them can be selected to screw in the second countersunk threaded bolt 18-2-5 according to the convenience of operation, and the short-shank round head bolt 24 screwed into the composite multifunctional bolt head 18-2 is locked with the composite multifunctional bolt head 18-2 to prevent relative rotation.

[0060] The scale arc plate 26 can fit with the inner arc of the flower basket frame 16, and the scale arc plate 26 can draw vertical scale lines running up and down;

[0061] First, take the reading scale line of the scale arc plate 26 currently pointed to by the screw pointer 25 as the starting point, rotate the basket nut formed by the basket frame 16 and the bushing nuts 17 assembled and locked at both ends in the loosening direction, driving the scale arc plate 26 fitted on its inner arc surface to rotate synchronously, and the screw pointer 25 is installed on the composite multifunctional bolt head 18-2 of the first inspectable bolt section 18 with the short rod round head bolt 24, and is fixed by the second countersunk head jacking bolt 18-2-5 screwed into any convenient second countersunk head jacking threaded hole 18-2-4 without rotation. The method realizes accurate control of the loosening angle to 60° by observing the reading of the scale arc plate 26 which rotates synchronously with the loosening of the basket nut and deviates from the fixed screw pointer 25; then the torque wrench is used to rotate the basket nut in the direction of re-tightening until the scale arc plate 26 mounted on its inner arc surface rotates synchronously to the starting reading scale line before loosening, that is, when it is re-aligned with the screw pointer 25 which has not been rotated, the loosened 60° basket nut is re-set and tightened. At this time, the torque value displayed by the torque wrench is the final tensioning construction torque actually existing before the random inspection.

[0062] The I-beam assembly F comprises a base steel beam 30, a fourth nut 31, a second bolt eyelet 32, a connecting end plate 33, and a through-wall screw 34; the upper and lower flange plates of the right outer end of the base steel beam (30) are each provided with an eighth circular hole 30-1, and the web between the upper and lower eighth circular holes 30-1 is cut to form a rectangular window 30-2; the fourth nut 31 is inserted into the eighth circular holes 30-1 of the upper and lower flanges of the base steel beam 30 and the rectangular window 30-2 of the web and fixed by welding; one end of the bolt of the second bolt eyelet 32 ​​is screwed into the fourth nut 31 to achieve fixed connection with the base steel beam 30.

[0063] A connecting end plate 33 is welded to the left end of the foundation steel beam 30, and a through-wall screw 34 passes through a bolt hole provided on the connecting end plate 33 to fix the connecting end plate 33 to the outside of the structural member under construction, thereby completing the installation of the steel beam serving as the foundation of the scaffolding upright and the outside of the structural member under construction.

[0064] Example 2

[0065] The first step is to design the upper hanging seat assembly A.

[0066] like Figure 2 As shown, a pair of far-to-far tolerance adjustment holes 2 and a pair of near-to-far tolerance adjustment holes 3 are opened by using a round steel plate 1. If the reserved through-wall bolt hole is offset away from the center position, the pair of far-to-far tolerance adjustment holes 2 in the horizontal position are used. If the reserved through-wall bolt hole is offset toward the center position, the round steel plate 1 is rotated to change the pair of near-to-far tolerance adjustment holes 3 from the vertical state to the horizontal state and then put into use. If the two reserved through-wall bolt holes are offset up and down, the line connecting the centers of the two bolt holes after the up and down offset is still a straight line, but it may not be horizontal but has a certain inclination. As long as the center of the round steel plate 1 is located at the center of the inclined line and then rotated, there is always a suitable tolerance adjustment hole in the far-to-far tolerance adjustment hole 2 or the near-to-far tolerance adjustment hole 3 to meet the installation needs.

[0067] Note: By setting the far-tolerance adjustment hole 2 in the left and right horizontal directions, the adjustment hole can be opened to the maximum as much as possible. Similarly, by setting the near-tolerance adjustment hole 3 in the up and down vertical directions, the adjustment hole can also be opened to the maximum as much as possible. Both pairs of holes can adapt to the left and right horizontal or up and down tilted deviations of the reserved through-wall bolt holes by rotating the round steel plate 1. Since the two pairs of holes have been opened to the maximum as much as possible when they were opened separately, the deviation that can be adjusted after rotating in place is much larger than the deviation range that can be adjusted by the common one-way arrangement of a round hole plus an elliptical hole. However, it is impossible to open two pairs of adjustment holes in the same direction continuously, because each pair of adjustment holes has been opened to the maximum as much as possible. If they are arranged in the same direction and opened continuously, the maximum size that can be opened by the adjustment hole will be exceeded. In other words, the round steel plate 1 will lose its due bearing capacity due to the large opening and be scrapped or leave safety hazards. Therefore, the tolerance strategy of grouping and rotating the bolt holes in this embodiment is simple and ingenious to achieve maximization.

[0068] A long cylindrical nut 4 is plug-welded in the central hole of the round steel plate 1, and four triangular stiffening plates 5 are symmetrically and evenly welded between the outer periphery of the long nut 4 and the round steel plate 1 to form the base of the suspension member; a first bolt eye 6 with its own bolt is screwed into the long nut 4 to form a complete upper suspension seat assembly A.

[0069] Two first long bolts 7 are used to fix the round steel plate 1 on the outer side of the structural member under construction through a pair of distal tolerance adjustment holes 2 or proximal tolerance adjustment holes 3, so as to install the upper pull rod of the upper pull scaffolding.

[0070] It is explained that the entire upper hanging seat assembly A of this solution has a simple structure, reliable force bearing, and a large tolerance range. During construction, the first bolt eye 6 can be appropriately rotated less than 360° due to the position of the upper tie rod of the scaffold to meet the oblique installation requirements of the tie rod avoiding the inner vertical rod. At the same time, the entire upper hanging seat assembly A is anchored to the structural member under construction using two long bolts, which meets the requirements and safety requirements of various provincial specifications without leaving any hidden dangers.

[0071] The second step is to design a pull-tab closed hook-type pull rod assembly with a pressure dispersion tube that matches the upper hanging pull seat assembly. In particular, the pull-tab closed hook-type pull rod assembly includes an upper pull-tab closed hook pull rod B and a lower pull-tab closed hook pull rod C. The upper pull-tab closed hook pull rod and the lower pull-tab closed hook pull rod C have basically the same structure. The upper pull-tab closed hook pull rod B is connected to the upper hanging pull seat assembly A, and the lower pull-tab closed hook pull rod C is connected to the I-beam assembly F.

[0072] like Figure 3As shown, threads are opened on both ends of the steel bar pull rod 8, and a first circular hole 8-1 is opened near the end of the left end, through which a pin can be passed. The left end is used to connect with the first detectable bolt section 18 or the second detectable bolt section 19 of the flower basket frame 16 through a connecting joint 23 using a thread plus a transverse pin 23-4. The threaded section at the right end is parallel to the long straight section after the hook is formed, and is used to connect with the L-shaped pull tab Q through the pull tab lock nut P.

[0073] A section of straight steel pipe is used as a pressure dispersion tube 9 for dispersing pressure when the pull rod hook is under tension. After welding a first nut 10 at one end, the pressure dispersion tube 9 is inserted into the right end of the steel bar pull rod 8. The first nut 10 is continuously screwed while the pressure dispersion tube 9 is continuously pushed to move from right to left on the steel bar pull rod 8. When the first nut 10 cannot be screwed any further, the pressure dispersion tube 9 is fixed on the steel bar pull rod 8. Then, the right end of the steel bar pull rod 8 together with the pressure dispersion tube 9 sleeved thereon and fixed by the first nut 10 are bent into a hook shape as a whole to form a pull rod hook.

[0074] Take a 30mm long steel pipe and make its inner diameter slightly larger than the steel bar pull rod 8, then cut it vertically into 6 parts to form 6 arc plates, take two of them and arrange them symmetrically on the straight part of the starting point of the bending hook of the steel bar pull rod 8, and weld these two arc plates firmly to the attached parts on the steel bar pull rod 8 to form a force transmission stopper 11.

[0075] A steel plate is bent into an L-shaped steel plate 12, the left end of which is rectangular, and a semicircular steel plate 13 is punched and plug-welded after a rectangular hole is opened. A third circular hole 13-1 is opened in the center of the semicircular steel plate 13, and the third circular hole 13-1 is slightly larger than the outer diameter of the steel bar tie rod 8; the right end of the L-shaped steel plate 12 is semicircular, and a second circular hole 12-1 is opened in the middle. A screw-nut community 14 with a gasket and threads on both the inside and outside is passed through the second circular hole 12-1 and treated as a screw, and a second nut 15 is screwed on, and then the second nut 15 is It is welded to the community 14, and the second circular hole 12-1 is slightly larger than the outer diameter of the screw nut community 14, ensuring that the community 14 and the second nut 15 can rotate freely in the second circular hole 12-1 after being welded into a whole but will not fall off from the second circular hole 12-1 at the right end of the L-shaped steel plate 12, becoming a pull-tab lock nut P. At this time, the semicircular steel plate 13, L-shaped steel plate 12, and pull-tab lock nut P that have been welded and assembled into a whole form a component together, which can be called an L-shaped pull tab Q for a hook-head closing pull tab.

[0076] Insert the third circular hole 13-1 at the left end of the L-shaped pull tab Q from the left end of the steel bar pull rod 8 and push it to the right until the pull tab lock nut P is against the end screw section of the pull rod hook head. At this time, turn the pull tab lock nut P to screw in the end screw section of the pull rod hook head, and at the same time pull the entire L-shaped pull tab Q to move to the right along the steel bar pull rod 8 until it is restricted by the force transmission block 11. At this time, continue to turn the pull tab lock nut P to close the hook head and tighten the force transmission.

[0077] When the hook of the upper pull-tab closed hook pull rod B hooks the first bolt eye 6 of the upper suspension seat assembly A, the pressure dispersion tube 9 of the hook of the pull rod is clamped between the hook of the pull rod and the first bolt eye 6, which not only expands the pressure contact surface between the eye and the hook, but also reduces the active compressive stress of the contact part, improves the bearing capacity and safety reliability of the eye, and at the same time, the hook of the pull rod disperses the passive pressure from the eye through the pressure dispersion tube 9, eliminates the adverse effect of the dangerous section of the hook on its bearing capacity, and improves the bearing capacity and safety reliability of the hook. In particular, when the pull-tab lock nut P is used for closing and tightening, the end of the hook of the pull rod transmits the tensile load through the L-shaped pull tab Q, forming a closed loop buckle and no longer in a cantilever state, and the bearing capacity of the entire closed hook is doubled compared to the bearing capacity of the open hook.

[0078] illustrate:

[0079] 1. The pull-tab closed hook-type pull rod assembly of this scheme is fully matched with the upper hanging pull seat assembly. It is open during the installation process and closed after the installation is completed. It can be opened or closed. The opening operation is convenient during disassembly and assembly, and the closing operation during operation improves the bearing capacity and safety. Because it is closed during operation, the end of the hook head is no longer in a cantilever state. The tensile load is transmitted through the L-shaped pull tab Q. The bearing capacity of the entire pull tab tensile closed hook head is doubled compared to the bearing capacity of the open hook head. And because the load pressure dispersion tube 9 is designed to be sandwiched between the pull rod hook head and the first bolt lifting ring 6 force transmission contact part, it not only expands the pressure contact surface between the lifting ring and the hook head and reduces the active compressive stress of the contact part, but also improves the bearing capacity and safety reliability of the lifting ring. At the same time, the hook head disperses the passive pressure from the lifting ring through the pressure dispersion tube 9, eliminating the adverse effect of the dangerous section of the hook head on its bearing capacity, and improving the bearing capacity and safety reliability of the hook head.

[0080] Second, on the other hand, only hook-type tie rods can be used in conjunction with the upper suspension seat assembly, so that the suspension seat can be connected to the structure under construction using two screws while ensuring rotation adjustment to meet the connection between the steel tie rod and the suspension seat that works sideways to avoid the inner vertical pole. If the lug plate welded to the tie rod is directly anchored to the structure under construction through bolts, then only a single screw can be used to ensure rotation. If two screws are used, they cannot rotate, and if they cannot rotate, it is impossible to avoid the conflict between the inclined tie rod and the inner vertical pole. If a double-ear plate hanging seat is fixed to the wall by double screws, the pull rod connected to the hanging seat will inevitably be unable to rotate. If it cannot rotate, it will be impossible to avoid the conflict between the inclined pull rod and the inner vertical rod. In these two cases, if you want to prevent the hanging seat from rotating and avoid the conflict with the inner vertical rod by obliquely, you need to reserve two bolt holes with inclined connecting lines for installing the hanging seat. However, it is too difficult to accurately locate the inclination angle of the two reserved holes for inclined installation of the hanging seat, and coupled with the inevitable reserved deviation, it is almost impossible to operate it. The same is true for the injection-molded single-screw double-ear plate. Although it can rotate, it is not a double screw. If it is made into a double screw, it cannot rotate.

[0081] To put it another way, the simultaneous rotation of the twin screws cannot be achieved by directly anchoring the pull rod to the structure under construction through bolts after the pull rod is welded to the lug plate, or by connecting the pull rod to the suspension seat after the pull rod is welded to the structure under construction.

[0082] 3. The hooks in the prior art are open-type hooks. Because the open cantilever is stressed, the bearing capacity is low. To ensure the bearing capacity, the overall thickness must be increased and the hooks must be larger. If the scaffolding uses an open hook pull rod, the overall diameter must be larger and the basket nut will be larger, which will make the entire basket pull rod thick and heavy and waste materials. At the same time, the open type is easy to unhook, so there is no practice of using open hook pull rods in scaffolding in engineering practice. The second existing hook technology is the closed type, which does not have the disadvantages of the open type, so there is a practice of using closed hook pull rods in scaffolding in engineering practice. However, the closed hook pull rod also has disadvantages: it is connected by a cross bolt, as shown in the right figure above, and the contact part between the closed hook and the bolt is sheared. Due to the large local stress in this part, it becomes a dangerous section of the hook. However, the dangerous section of the closed hook of the existing pull rod has not been treated, and it is also difficult to treat. Because if the section is locally thickened, the size of the entire closed ring will be larger, and if the ear plate is increased at the same time, it will be bulky and wasteful. If the ear plate is not treated, the small ear plate cannot guarantee effective control of the large-size closed ring work station, which will affect the tensioning of the pull rod and affect safety and reliability.

[0083] The pull-tab-enclosed hook-type pull rod assembly with a pressure dispersion tube 9 designed in this embodiment opens during the installation process and closes after the installation is completed. It can be opened or closed, which completely overcomes the above-mentioned problems and is fully compatible with the upper hanging pull assembly A designed in this embodiment, and is easy to open and operate during disassembly and assembly. When working, it is closed, and the end of the pull rod hook head is no longer in a cantilever state. The tensile load is transmitted through the L-shaped pull tab Q. The bearing capacity of the pull rod hook head closed by the tensile pull tab is doubled compared with the bearing capacity of the open hook head. The pressure dispersion tube 9 is clamped between the pull rod hook head and the force transmission contact part of the first bolt lifting ring 6, which not only expands the pressure contact surface between the lifting ring and the hook head, but also reduces the active compressive stress of the contact part, improves the bearing capacity and safety reliability of the lifting ring, and at the same time enables the pull rod hook head to disperse the passive pressure from the lifting ring through the pressure dispersion tube 9, eliminating the adverse effect of the dangerous section of the hook head on its bearing capacity, and improves the bearing capacity and safety reliability of the hook head.

[0084] The third step is to design a curved basket assembly D for the upper pull frame with a measurable torque coefficient and controllable tension for easy random inspection.

[0085] A 50mm long threaded section is opened on each inner side of both ends of a seamless steel pipe, and a pair of first countersunk top screw holes 16-1 are symmetrically arranged on the outer circumference of each end of the threaded section, and a first countersunk top screw 16-2 is correspondingly provided. The four holes are connected to form a virtual rectangular plane, which can be longitudinally cut and bisected into the seamless steel pipe, that is, the two long sides of the rectangular plane are located on the outer circumference of the steel pipe, and the two short sides of the rectangular plane are located on the inner and outer diameters of the steel pipe. Then, the two long sides of the rectangular plane located in the longitudinal direction of the seamless steel pipe are taken as the center of the width, one quarter of the inner and outer circumference of the seamless steel pipe is taken as the width, and the length of the middle threadless section of the seamless steel pipe is taken as the length, and two rectangular windows are symmetrically arranged on both sides. After the rectangular window is opened in the middle threadless section, the remaining two symmetrically arranged arc plates connect the 50mm long internal threaded sections at both ends of the arc plates into a whole, which is called a basket frame 16. The middle of the remaining two side arc plates of the basket frame 16 is provided with a fourth circular hole 16-3.

[0086] A 65mm bushing nut 17 is screwed into the 50mm long internal threaded section at both ends of the basket frame 16. The bushing nut 17 is symmetrically provided with two first countersunk threaded holes 17-1. The countersunk threaded holes 16-2 can be screwed through the first countersunk threaded holes 16-1 at both ends of the basket frame 16 and then the bushing nut 17 is screwed into the two first countersunk threaded holes 17-1 symmetrically provided. The two ends of the basket frame 16 and the bushing nut 17 screwed therein are pinned to prevent relative rotation. The outer end of the bushing nut 17 is provided with a 16mm thick hexagonal ring, and its opposite side and diagonal dimensions meet the dimensions of the national standard high-strength bolt head. This makes it easy for the bushing nut 17 to be screwed into the 50mm long internal threaded section at both ends of the basket frame 16, and also makes it easy for the bushing nut 17 to be screwed into the 50mm long internal threaded section at both ends of the basket frame 16, and to be screwed together with the screw of the first detectable bolt section 18 to form a bolt pair for inspection. The existing torque coefficient detection and shaping equipment can normally tighten the bushing nut 17. Except for the 16mm thick hexagonal ring, the remaining 50mm of the outer circumference of the bushing nut 17 is provided with external threads for screwing into the 50mm long internal thread section at the end of the basket frame 16. A through hole with a diameter of 20mm and an internal thread are provided in the center of the bushing nut 17 at the upper end of the basket frame 16, which is used to connect the first detectable bolt section 18 provided with the package; a through hole with a diameter of 20mm and an internal thread are provided in the center of the bushing nut 17 at the lower end of the basket frame 16, which is used to connect the second detectable bolt section 19 provided with the package.

[0087] The screw rod of the first inspectable bolt section 18 is 220mm long. A first bolt hole 18-1 is horizontally opened near the end of the top of the screw rod of the first inspectable bolt section 18, which is used to add a transverse pin 23-4 to lock it when it is threadedly connected with the connecting joint 23. The hexagonal thin nut 18-2-1 and the hexagonal thick nut 18-2-3 are screwed onto the bottom end of the screw rod of the first inspectable bolt section 18. Three second countersunk threaded holes 18-2-4 are evenly distributed on the six vertical surfaces of the hexagonal thick nut 18-2-3 in a one-by-one manner, but only one second countersunk threaded bolt 18-2-5 is provided. The hexagonal thick nut 18-2-3 is screwed onto the screw rod of the first inspectable bolt section 18 by no less than 8mm. The hexagonal thick nut 18-2-3 is not screwed onto the second countersunk threaded hole 18-2-4. The length of the screw rod of an inspectable bolt section 18 is not less than 20mm, and the distance between the hexagonal thin nut 18-2-1 and the hexagonal thick nut 18-2-3 is 5mm. This 5mm gap is welded full and firmly by electric welding and then polished into a vertical side plane 18-2-2 that is the same as the hexagonal thin nut 18-2-1 and the hexagonal thick nut 18-2-3 on both sides. At this point, a composite multifunctional bolt head 18-2 is formed by welding at the bottom end of the screw rod of the first inspectable bolt section 18.

[0088] The first inspectable bolt section 18 and the composite multifunctional bolt head 18-2 formed by welding at its bottom end, together with the core-filling nut 17 with a 16mm thick hexagonal ring which can be removed from the upper end of the basket frame 16, constitute the first inspectable bolt pair X.

[0089] The second inspectable bolt section 19 has a screw rod length of 220 mm and a normal hexagonal bolt head, and together with the bushing nut 17 with a 16 mm thick hexagonal ring removed from the lower end of the flower basket frame 16, the second inspectable bolt pair Y is formed.

[0090] The average value of the torque coefficient of the first inspectable bolt pair X and the torque coefficient of the second inspectable bolt pair Y can be taken as the torque coefficient of this set of upper pull frame special arc flower basket assembly. Of course, referring to the requirements of relevant specifications, 8 sets of upper pull frame special arc flower basket assemblies should be randomly selected from the same batch of upper pull frame special arc flower basket assemblies, and the representative value of the torque coefficient of this batch should be determined according to the specifications.

[0091] Two lining reinforcement steel plate rings 20 are welded at the middle of the inner height of the flower basket frame 16 at an outside-to-outside spacing of 70 mm to serve as internal reinforcement for the middle of the flower basket frame 16 .

[0092] A 70mm long short steel pipe 21 is inserted and welded in the middle of the upper and lower heights of the outer flower basket frame 16 as an external reinforcement of the middle part of the flower basket frame 16, so that the upper and lower ends are flush with the outer surfaces of the two lining reinforcement steel plate rings 20 welded in the middle of the inner height of the flower basket frame 16, and two pairs of four circular holes with a diameter of 22mm are opened on the circumference of the short steel pipe 21 at intervals of 90 degrees, so that a pair of sixth circular holes 21-2 are aligned with the positions of a pair of fourth circular holes 16-3 opened in the middle of the arc plates on both sides of the flower basket frame 16, and the other pair is the fifth circular holes 21-1.

[0093] Two sections of rectangular arc plates 22, each with a length of 50 mm, are cut from the rectangular arc plates taken out from the rectangular windows opened on both sides when making the flower basket frame 16, and inserted into the outer sides of the two inner lining reinforcement steel plate rings 20 arranged up and down, which are also the inner sides of the short steel pipes 21 inserted in the middle of the upper and lower heights of the outer side of the flower basket frame 16. The contact parts of the two sections of rectangular arc plates 22 and the two inner lining reinforcement steel plate rings 20 are welded by electric welding, and the two sections 22 are welded to the inner sides of the short steel pipes 21 by electric welding, and then the two sections of rectangular arc plates 22 are aligned with a pair of fifth circular holes 21-1 of the short steel pipes 21 welded on the outer side of the flower basket frame 16 to open seventh circular holes 22-1 of the same diameter.

[0094] At this point, a tightening force transmission strengthening zone Z is formed in the middle of the height of the flower basket frame 16. Four round holes with a diameter of 22 mm are evenly distributed at 90° intervals on the circumference of the strengthening zone for inserting a matching special torque wrench for tightening and tensioning.

[0095] A connecting joint 23 is installed on each of the first inspectable bolt section 18 and the second inspectable bolt section 19, including an integrated threaded sleeve 23-1 formed by mechanical processing, the middle part of the threaded sleeve 23-1 is a hexagonal nut 23-2, and the threaded sleeve 23-1 is provided with a pair of third bolt holes 23-3 on the diameter near both sides of the hexagonal nut 23-2, and is correspondingly provided with a cross pin 23-4 that crosses the third bolt hole 23-3 and a matching third nut 23-5.

[0096] One end of the connecting joint 23 is used to connect the first inspectable bolt section 18 or the second inspectable bolt section 19. During installation, it is tightened to ensure that the cross pin 23-4 can smoothly cross the third bolt hole 23-3 opened by the threaded sleeve 23-1 and the first bolt hole 18-1 or the second bolt hole 19-1 opened at the end of the first inspectable bolt section 18 or the second inspectable bolt section 19, and then the third nut 23-5 matching the cross pin 23-4 is tightened, so that the connecting joint 23 and the first inspectable bolt section 18 or the second inspectable bolt section 19 are reliably connected and pinned.

[0097] The other end of the connecting joint 23 is used to connect the steel bar pull rod 8. During installation, the end of the steel bar pull rod 8 with a transverse pin hole 8-1 is tightened to the connecting joint 23 to ensure that the transverse pin 23-4 can smoothly cross the third bolt hole 23-3 opened by the threaded sleeve 23-1 and the first circular hole 8-1 opened at the end of the steel bar pull rod 8, and then tighten the nut matching the transverse pin 23-4, so that the connecting joint 23 and the end of the steel bar pull rod 8 are reliably connected and pinned.

[0098] When the first inspectable bolt section 18 and the second inspectable bolt section 19 arranged up and down are respectively and reliably connected and pinned to the ends of the two steel bar tie rods 8 arranged up and down by using the connecting joint 23, a complete tensionable diagonal tie rod is formed.

[0099] The fourth step is to design a special corner reset mark component E for random inspection and re-testing of torque tension after batch construction is completed.

[0100] A threaded hole 24-1 is opened on the side of the round head of the short rod round head bolt 24, and a half threaded section of a screw rod matching the threaded hole 24-1 is retained, and the other end is processed into a pointer shape to form a screw rod pointer 25, and the screw rod pointer 25 is screwed into the threaded hole 24-1 to complete the assembly, and then the short screw rod of the short rod round head bolt 24 of the assembly is screwed into the hollow section of the hexagonal thick nut 18-2-3 that is not screwed on the first detectable bolt section 18. A second countersunk head screw bolt 18-2-5 is selected from the three second countersunk head screw thread holes 18-2-4 uniformly opened at 120° intervals on the hexagonal thick nut 18-2-3, which is easy to operate, to prevent the short rod round head bolt 24 and the composite multifunctional bolt head 18-2 from rotating relative to each other.

[0101] A piece of stainless steel sheet is hammered into an arc shape so that it can fit with the inner arc of the flower basket frame 16, and the arc plate is vertically marked with scale lines running up and down. Since the central angle of the arc plate width is 90°, it is divided into 10 grids with each grid being 10° to form a scale arc plate 26; thus, a special component W for random inspection and re-testing of torque tension force is formed.

[0102] A triangular stainless steel ear plate 27 is welded to the right end of the scale arc plate 26, a stainless steel nut 28 is welded to the end of the stainless steel ear plate 27, and a top screw 29 is configured to match it. After the scale arc plate 26 is placed in the flower basket frame 16 and fits with the arc plate of the right flower basket frame 16, it is fixed to the arc plate of the flower basket frame 16 with the top screw 29.

[0103] Rotate the short-shank round head bolt 24 screwed into the hollow section of the hexagonal thick nut 18-2-3 so that the screw pointer 25 installed in its threaded hole 24-1 is aligned with the "1" in the scale arc plate 26, and then use the second countersunk tack screw bolt 18-2-5 to select the most convenient one of the three second countersunk tack screw threaded holes 18-2-4 opened at intervals on the six vertical surfaces of the hexagonal thick nut 18-2-3, and screw it into the hole to tighten it, so that the short-shank round head bolt 24 will no longer rotate in the rotating hollow section of the hexagonal thick nut 18-2-3.

[0104] The basket frame 16 is loosened back, and the core-filling nuts 17 screwed into the top tightening pins at both ends thereof are loosened accordingly, while the first inspectable bolt section 18 and the second inspectable bolt section 19 do not move, because the first inspectable bolt section 18 and the second inspectable bolt section 19 are both locked with the threaded sleeve 23-1 of the connecting joint 23 through the cross pin 23-4, and the end of the steel bar tie rod 8 is also locked with the threaded sleeve 23-1 of the connecting joint 23 through another cross pin 23-4. The hook heads of the tie rods at both ends cannot produce substantial rotation with negative effects due to the non-concentric angle between the included angle and the first bolt eye 6, so the hook heads of the tie rods do not move either, and the scale arc plate 26 rotates with the basket frame 16. When the scale numbers on the scale arc plate 26 are aligned with the screw pointer 25, stop screwing back, that is, the 60° angle has been completed.

[0105] Use a torque wrench to tighten and reset the flower basket frame 16, so that the scale arc plate 26 rotates in the reset direction synchronously with the re-tightening of the flower basket frame 16, until the scale value "1" of the scale arc plate 26 returns to align with the screw pointer 25 that has not rotated. The torque value displayed by the torque wrench is the final actual construction torque, which is compared with the established control torque during batch tensioning to determine whether the batch tensioning construction is qualified.

[0106] If the tensioning is completed and the frame is continued to be erected until the end of this section, samples can be taken in batches and the above-mentioned angle reset mark method can be used to measure the actual construction torque in the samples. The actual tensile axial force of the tie rod can be known based on the known torque coefficient. By comparing it with the tensile axial force of the tie rod obtained by decomposing the calculated actual load by angle, it can be determined that after the erection of all the frames in this section of the batch is completed, the deviation between the actual axial force in the upper tie rod and the theoretical value can be determined, and its safety can be evaluated accordingly.

[0107] The fifth step is to design the I-beam assembly F used to connect the outer end of the steel beam with the closed hook pull rod C of the lower pull plate.

[0108] No. 16 I-beam is used as the foundation steel beam 30 of the scaffolding upright, an eighth circular hole 30-1 is opened on the upper flange of the foundation steel beam 30 160mm away from the right outer end, and the same eighth circular hole 30-1 is also opened on the lower flange of the foundation steel beam 30 just below the eighth circular hole 30-1, and the web between the upper and lower circular holes is cut into a rectangular window, so that the upper and lower circular holes and the rectangular windows of the web between the two are connected into an integral opening, and then the fourth nut 31 is inserted into the integral opening and welded firmly with electric welding.

[0109] The second bolt eye 32 is used, and its bolt portion is screwed into the fourth nut 31 , thereby completing the connection between the second bolt eye 32 and the foundation steel beam 30 .

[0110] A connecting end plate 33 is welded to the left end of the foundation steel beam 30, three bolt holes are opened on the connecting end plate on the periphery of the steel beam, and three through-wall screws 34 are used to fix the connecting end plate 33 to the outside of the structural member under construction, thereby completing the installation of the steel beam serving as the foundation of the scaffolding upright and the outside of the structural member under construction.

[0111] After the concrete pouring of the steel beam installation layer is completed and the side formwork of the outer member is removed, and the concrete has basic strength, the vertical pole foundation steel beam 30 can be installed. The foundation steel beam 30 can be temporarily placed on a temporary support, and then the scaffolding can be started. After the concrete strength of the upper hanging seat assembly A installation layer reaches C20, the lower pull-piece closed hook-type pull rod C, the lower threaded pin and the connecting joint 23, the arc basket assembly D, the upper threaded pin and the connecting joint 23, the pull-piece closed hook-type pull rod B, and the upper hanging seat assembly A can be installed in order from bottom to top. Finally, the upper hanging seat assembly A can be anchored to the outer side of the structural member under construction with two first long bolts 7 to complete the preliminary installation.

[0112] Calculate the actual vertical load value during tensioning, and decompose it according to the angle of the diagonal tie rod to get the axial force that should be in the diagonal tie rod. The representative value of the torque coefficient of the special basket bolt assembly for the same batch of upper pull frames is known, so the torque value that should be applied to the diagonal tie rod can be calculated. When the torque wrench for twisting the basket reaches the set torque value that should be applied, stop twisting. At this time, the axial force generated by tensioning in the diagonal tie rod is equal to the axial force that should be in the diagonal tie rod decomposed according to the actual vertical load value.

[0113] Thus, this embodiment creatively designs a set of brand-new upper pull-up frame special basket screw assembly with measurable torque coefficient, controllable tension and convenient for random inspection:

[0114] (1) The component is creatively designed with a basket bolt pair that can be installed and removed and can be directly inspected, thereby creatively realizing that the basket screws for scaffolding can be randomly sampled by batch, and then the inspectable bolt pair in the sample can be easily taken out, and then the torque coefficient of the basket screw for scaffolding can be tested by referring to the existing high-strength bolt pair torque coefficient test specification;

[0115] (2) Since the special turnbuckle screw assembly for the upper pull frame can easily detect the torque coefficient of the turnbuckle screw for the scaffolding, it creatively realizes the scientific construction of controlling the tension of the scaffolding turnbuckle screw according to the set torque, which completely changes the current situation in the entire construction industry where the tension of the scaffolding turnbuckle screw depends entirely on the workers' feeling, and completely eliminates the unreliability of the existing technology of tensioning by feeling, which is either under-tensioning or over-tensioning with huge differences and causes major safety hazards;

[0116] (3) Since the special basket screw assembly for the upper pull frame can easily detect the torque coefficient of the basket screw for the scaffolding, a special component for random inspection and re-testing of torque tension force is further creatively designed, so that after each batch of upper pull frame basket screws are tensioned, the angle reset method can be used to conduct a proportional random inspection to scientifically evaluate whether the tension torque of the upper pull frame basket screws is qualified. After each section of the frame is fully erected, the actual axial force in the upper pull frame basket screw can be checked in batches and proportionately. And compared with the calculated value, the construction quality and safety of the upper pull frame basket screw are evaluated, which completely eliminates the unscientific and unreliable judgment of the existing professional safety technicians on tensioning acceptance by hand pulling and shaking;

[0117] (4) At present, there are only some provincial standards for the scaffolding with screws for the upper pull-up frame, and the content on the tensioning of the scaffolding flower basket screws is basically blank, and there is no national unified standard, nor an industry unified standard. Therefore, this patented technology will be able to provide valuable reference for the revision and improvement of provincial and local standards and the formulation of unified standards.

[0118] (5) A pull-tab closed hook pull rod with a built-in pressure diffusion tube is creatively designed.

[0119] (6) The pull-tab closed hook pull rod of the component is connected to the inspectable bolt section of the inspectable bolt pair in the basket by a threaded pin composite special joint, which ingeniously and reliably realizes the relevant functions.

[0120] (7) The upper suspension assembly is creatively designed to maximize the tolerance of the reserved through-wall bolt holes while ensuring a smooth and convenient installation process for the entire assembly.

[0121] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0122] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A tension-controllable upper-pull rod scaffolding that is convenient for spot inspection, characterized in that: It includes an upper hanging pull seat assembly A, a pull piece closed hook pull rod assembly, an I-beam assembly F, and an arc flower basket assembly D; The pull-tab closed hook pull rod assembly comprises an upper pull-tab closed hook pull rod B and a lower pull-tab closed hook pull rod C; The upper suspension seat assembly A is anchored and connected to the structural member under construction; The upper pull-piece closed hook pull rod B and the lower pull-piece closed hook pull rod C are respectively connected to the upper suspension seat assembly A and the I-beam assembly F to realize an openable and closable hook connection; The arc basket assembly D is connected between the upper pull piece closed hook pull rod B and the lower pull piece closed hook pull rod C to achieve controllable tensioning of the upper pull rod scaffolding; The arc basket assembly D comprises a basket frame (16), a core-filling nut (17), a first inspectable bolt section (18), a second inspectable bolt section (19), and a connecting joint (23); The upper and lower ends of the basket frame (16) are respectively screwed into the bushing nuts (17) and tightened to form a basket, and a thick hexagonal ring is provided on the top of the bushing nut (17); a through hole with an internal thread is opened in the center of the bushing nut (17) at the upper end of the basket frame (16) for connecting the first detectable bolt section (18); a through hole with an internal thread is opened in the center of the bushing nut (17) at the lower end of the basket frame (16) for connecting the second detectable bolt section (19); the arc basket assembly D is connected to the pull-tab closed hook type pull rod assembly through a connecting joint (23); The bottom end of the first inspectable bolt section (18) is provided with a composite multifunctional bolt head (18-2), which together with a core-filling nut (17) with a thick hexagonal ring that can be removed from the upper end of the flower basket frame (16) constitutes a first inspectable bolt pair X; The second inspectable bolt section (19) is provided with a hexagonal bolt head, and together with a bushing nut (17) with a thick hexagonal ring which can be removed from the lower end of the flower basket frame (16), forms a second inspectable bolt pair Y; A tightening force transmission reinforcement zone Z is provided in the middle of the height of the flower basket frame (16), and four circular holes evenly spaced at 90° intervals on the circumference of the reinforcement zone Z are used for tightening and tensioning after a torque wrench is inserted; One end of the connection joint (23) is connected to the first inspectable bolt section (18) or the second inspectable bolt section (19) via a transverse pin (23-4); the other end of the connection joint (23) is connected to the pull-tab closed hook-type pull rod assembly via a transverse pin (23-4); It also includes a rotation angle reset mark assembly E; the rotation angle reset mark assembly E includes a short rod round head bolt (24), a screw pointer (25), and a scale arc plate (26); A threaded hole (24-1) is opened on the side of the head of the short-stem round head bolt (24), and the screw pointer (25) is screwed into the threaded hole (24-1) to complete the assembly, and then the short screw of the short-stem round head bolt (24) of the assembly is screwed into the composite multifunctional bolt head (18-2); Three second countersunk head screw threaded holes (18-2-4) are arranged at 120° apart near the lower end side of the composite multifunctional bolt head (18-2), and one of the second countersunk head screw threaded holes (18-2-5) can be screwed into the second countersunk head screw threaded holes according to the convenience of operation, so that the short rod round head bolt (24) screwed into the composite multifunctional bolt head (18-2) is locked with the composite multifunctional bolt head (18-2) to prevent relative rotation; The scale arc plate (26) can fit with the inner arc of the flower basket frame (16), and the scale arc plate (26) is vertically drawn with scale lines extending vertically from top to bottom; First, the reading scale line of the scale arc plate (26) currently pointed by the screw pointer (25) is taken as the starting point, and the basket nut formed by the basket frame (16) and the bushing nuts (17) assembled and locked at both ends is rotated in the loosening direction, so as to drive the scale arc plate (26) fitted on the inner arc surface thereof to rotate synchronously, and the screw pointer (25) is installed on the composite multifunctional bolt head (18-2) of the first inspectable bolt section (18) along with the short rod round head bolt (24), and is fixed by screwing the second countersunk head screw bolt (18-2-5) into any one of the convenient second countersunk head screw threaded holes (18-2-4) Without rotating, the angle of the loosening rotation is accurately controlled to be 60° by observing the reading of the scale arc plate (26) that rotates synchronously with the loosening of the basket nut and deviates from the fixed screw pointer (25); then, the basket nut is rotated in the re-tightening direction by a torque wrench until the scale arc plate (26) attached to the inner arc surface thereof rotates synchronously to the starting reading scale line before the loosening, that is, when it is re-aligned with the screw pointer (25) that has not been rotated, the loosened 60° basket nut is re-set and tightened. At this time, the torque value displayed by the torque wrench is the final tensioning construction torque actually existing before the random inspection.

2. The tension-controllable and easy-to-check upper-pull rod scaffolding according to claim 1 is characterized in that: The upper suspension seat assembly A is provided with a steel plate with a central perforation, a long nut (4), and a first bolt suspension ring (6); The long nut (4) is welded on the central through hole of the steel plate; the bolt end of the first bolt eye (6) is screwed into the long nut (4); At least one pair of misalignment adjustment holes is provided on the steel plate, and the upper suspension seat assembly A adaptively installs two first long bolts (7) on the under-construction structural member with reserved through-wall bolt holes through the pair of misalignment adjustment holes to achieve anchor connection.

3. The tension-controllable and easy-to-check upper-pull rod scaffolding according to claim 1 is characterized in that: The pull-tab closing hook pull rod assembly comprises a steel bar pull rod (8), a pressure dispersion pipe (9), an L-shaped pull tab Q, and a pull tab lock nut P; The steel bar pull rod (8) is provided with left and right threaded sections, and a first circular hole 8-1 through which a pin can be passed is provided near the left end of the steel bar pull rod (8). The left end threaded section of the steel bar pull rod (8) is used to connect with the arc basket assembly D; The right end of the steel bar pull rod (8) together with the pressure dispersion pipe (9) sleeved on the steel bar pull rod (8) and fixed by the first nut (10) are integrally bent into a hook shape to form a pull rod hook; The pull rod hook head and the L-shaped pull tab Q are hooked and anchored on the upper hanging pull seat assembly A through a pull tab lock nut P.

4. The tension-controllable and easy-to-check upper-pull rod scaffolding according to claim 3 is characterized in that: The L-shaped pull tab Q comprises an L-shaped steel plate (12) and a semicircular steel plate (13); the pull tab lock nut P comprises a joint (14) and a second nut (15); The left end of the L-shaped steel plate (12) is rectangular, and a semicircular steel plate (13) is punched and plug-welded after a rectangular hole is opened. A third circular hole (13-1) is opened in the center of the semicircular steel plate (13), and the third circular hole (13-1) is larger than the outer diameter of the steel bar tie rod (8); the right end of the L-shaped steel plate (12) is semicircular, and a second circular hole (12-1) is opened in the middle. A screw-nut community (14) with internal and external threads and a gasket is passed through the second circular hole (12-1) and treated as a screw. The second nut (15) is screwed on, and then the second screw The mother (15) and the common body (14) are welded, and the second circular hole (12-1) is slightly larger than the outer diameter of the screw nut common body (14), so as to ensure that the common body (14) and the second nut (15) can rotate freely in the second circular hole (12-1) after being welded into a whole, but will not fall off from the second circular hole (12-1) at the right end of the L-shaped steel plate (12), thereby forming a pull-tab lock mother P. At this time, the semicircular steel plate (13), the steel plate (12), and the pull-tab lock mother P, which have been welded and assembled into a whole, together form an L-shaped pull-tab Q for hook head closure.

5. The tension-controllable and easy-to-sample upper-pull rod scaffolding according to claim 1 is characterized in that: The I-beam assembly F comprises a base steel beam (30), a fourth nut (31), a second bolt eye (32), a connecting end plate (33), and a through-wall screw (34); The upper and lower flange plates at the right outer end of the foundation steel beam (30) are each provided with an eighth circular hole (30-1), and the web plate between the upper and lower eighth circular holes (30-1) is cut off to form a rectangular window (30-2); the fourth nut (31) is inserted into the eighth circular holes (30-1) of the upper and lower flanges of the foundation steel beam (30) and the rectangular window (30-2) of the web plate and fixed by welding; one end of the bolt of the second bolt lifting ring (32) is screwed into the fourth nut (31) to achieve fixed connection with the foundation steel beam (30); the I-beam assembly F is connected to the closed hook pull rod C of the lower pull plate through the second bolt lifting ring (32); A connecting end plate (33) is welded to the left end of the foundation steel beam (30), and a through-wall screw (34) passes through a bolt hole provided on the connecting end plate (33) to fix the connecting end plate (33) to the outside of the structural member under construction, thereby completing the installation of the steel beam serving as the foundation of the scaffolding pole and the outside of the structural member under construction.

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