CN217232644U

CN217232644U - Non-orthogonal adjustable flower basket type overhanging scaffold supporting system

Info

Publication number: CN217232644U
Application number: CN202220192228.5U
Authority: CN
Inventors: 吕飞; 金超; 张洲铨; 翟晓慧; 蒋义; 徐伟; 陈宏波
Original assignee: Ningbo Construction Engineering Group Co ltd
Current assignee: Ningbo Construction Engineering Group Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-08-19
Anticipated expiration: 2032-01-24

Abstract

The utility model discloses a non-orthogonal adjustable flower basket type overhanging scaffold supporting system, which comprises a hanging rod, an overhanging beam and a mounting plate fixed at the edge of the floor; the mounting plate is welded with a shaft seat, and a mounting piece is arranged between the cantilever beam and the shaft seat and is formed by sequentially welding two transverse hinged plates at the inner end, a middle end plate and two vertical hinged plates at the outer end; the inner end of the cantilever beam web plate is clamped between the two screwed plates, and the web plate is connected with the two screwed plates through transverse connecting bolts; the shaft seat is clamped between the two hinged plates, shaft holes penetrate through the shaft seat and the two hinged plates, and fastening bolts are sleeved in the shaft seat and the shaft holes of the two hinged plates and are screwed with fastening nuts; the outer surface of the end plate is further welded with a left tensile plate and a right tensile plate, the inner side of each tensile plate is welded with the upper side of the bolt joint plate on the same side, and each tensile plate is fixed with the left part or the right part of the inner end of the upper flange plate of the cantilever beam through a vertical tensile bolt. The supporting system can optimize the connecting part of the cantilever beam and the mounting piece and enhance the connecting strength of the cantilever beam and the mounting piece.

Description

Non-orthogonal adjustable flower basket type overhanging scaffold supporting system

Technical Field

The utility model relates to a building construction security protection technical field, specific adjustable basket of flowers formula of non-quadrature scaffold frame supporting system that encorbelments that says so.

Background

In building construction, in order to meet the requirements of construction operation and safety protection, a rigid cantilever beam and a suspension rod are attached to a building structure, and a load frame body structure is erected by taking the cantilever beam and the suspension rod as a supporting system, so that a cantilever scaffold is formed.

The traditional overhanging scaffold on the market is generally orthogonal and non-adjustable and comprises a short steel overhanging beam and a suspender with a basket bolt, wherein the inner end of the overhanging beam is directly welded with a connecting plate which is screwed at the edge of the floor; the cantilever beam is provided with a lower lug plate, the edge of the upper floor is provided with an upper lug plate, and two ends of the suspender are respectively connected with the upper lug plate and the lower lug plate.

Because the included angle between the cantilever beam of the scaffold supporting system and the edge of the floor is vertically non-adjustable, complex contour lines and corners of the edge of the floor are difficult to match, and the erection and supporting of a scaffold frame body are also not facilitated, a non-orthogonal adjustable improvement scheme has been proposed, namely, a hinged plate is welded on a connecting plate, a shaft hole is arranged at the inner end of the cantilever beam, and the cantilever beam is hinged with the connecting plate by using a hinged shaft. But the concrete hinge structure of above-mentioned improvement scheme is too crude, causes cantilever beam I-steel tip intensity to destroy easily, or articulated axle sleeve needs the welding, and its welding quality can't guarantee.

Therefore, in order to overcome the above disadvantages, the present applicant has made a second improvement of the above improvement scheme, and filed the utility model application with application number 2021227853022, entitled supporting system of overhanging scaffold. The axle seat is welded on the connecting plate, and the mounting piece is additionally arranged between the cantilever beam and the axle seat and is formed by sequentially welding two transverse hinged plates at the inner end, a middle end plate and two vertical hinged plates at the outer end; the inner end of the cantilever beam web plate is clamped between the two screwed connection plates, and the three plates are screwed by the connecting bolts; the shaft seat is clamped between the two hinged plates, shaft holes are formed in the shaft seat, the two hinged plates and the shaft holes in the two hinged plates in a penetrating mode, and fastening bolts are sleeved in the shaft seat and the shaft holes in the two hinged plates and are screwed with fastening nuts. The included angle between the cantilever beam and the edge of the floor at the floor can be flexibly adjusted by loosening the fastening nut, and the included angle can be locked by screwing the fastening bolt.

However, the technical staff finds that the solution applied by the utility model, i.e. the second solution, still has the following disadvantages in the actual construction process. Firstly, stress analysis is carried out on the joint of the cantilever beam and the mounting part, the cantilever beam has a drooping trend at the outer end due to the characteristic of a long beam member, so that the upper part of the inner end of the cantilever beam is pulled, and the secondary modification scheme adopts four connecting bolts with four evenly distributed corners to connect the inner end of the cantilever beam and the mounting part bolted plate, so that the pertinence is not strong, the connection arrangement mode is unscientific, and the connection effect is not ideal; the connection between the connecting plate and the edge of the floor is unreasonable, the connecting plate is screwed with the corresponding embedded internal thread sleeve in the wall by four connecting bolts at four corners, the connecting piece is also influenced by a long beam member of an overhanging beam, the upper part is pulled and the lower part is pressed, so the pressure at the lower part is mainly born by the floor, and the effect of the two bolts at the lower part on the pressed connection is not large, thereby forming waste; in addition, the lower ear plate of the cantilever beam is welded and fixed, and the position of the lower ear plate cannot be adjusted, so that the hanging rod is inconvenient to hook and assemble; moreover, in the second modification, the connecting structure of the upper ear plate and the upper floor is too complex, which increases the cost; moreover, the turn-on part of the turn-on bolt and the screw is exposed in the air, so that the turn-on bolt is easy to leak water and rust, and the turn-on adjustment operation is inconvenient; moreover, the positioning ribs of the scaffold frame body are directly welded on the cantilever beam, so that the scaffold frame is not adjustable in the shelving position of the cantilever beam, and the scaffold frame is not beneficial to building a support on the frame body in the later period.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can optimize the position of being connected of cantilever beam and installed part, strengthen its joint strength's adjustable flower basket formula of nonorthogonal scaffold frame supporting system that encorbelments.

The technical scheme of the utility model is that a non-orthogonal adjustable flower basket type overhanging scaffold supporting system is provided, which comprises a hanging rod, an overhanging beam and a mounting plate fixed at the edge of the floor; the mounting plate is welded with a shaft seat, a mounting piece is arranged between the cantilever beam and the shaft seat, and the mounting piece is formed by sequentially welding two transverse hinged plates at the inner end, a middle end plate and two vertical screwed plates at the outer end; the inner end of the cantilever beam web plate is clamped between the two screwed plates, and the web plate is connected with the two screwed plates through transverse connecting bolts; the shaft seat is clamped between the two hinged plates, shaft holes are formed in the shaft seat, the shaft holes of the two hinged plates, and fastening bolts are sleeved in the shaft seat and the shaft holes of the two hinged plates and are screwed with fastening nuts; the outer surface of the end plate is also welded with a left tensile plate and a right tensile plate, the inner side edge of each tensile plate is welded with the upper edge of the bolt plate at the same side, and each tensile plate is fixed with the left part or the right part of the inner end of the upper flange plate of the cantilever beam through a vertical tensile bolt; the number of the connecting bolts used for connecting the cantilever beam web plate and the two bolting plates is two.

Compared with the prior art, the non-orthogonal adjustable flower basket type overhanging scaffold supporting system adopting the structure has the following advantages.

Firstly, the bearing system fully considers the stress condition of the joint of the cantilever beam and the mounting piece, namely the upper part of the inner end of the cantilever beam is pulled for a long time due to the sag of the long beam component and is easy to damage; the tensile plates which are firmly welded with the end plates and the screwed plates are additionally arranged, and the vertical tensile bolts are utilized to firmly screw the upper flange plate at the inner end of the cantilever beam with the tensile plates, so that the connection strength and firmness of the upper part of the inner end of the cantilever beam and the mounting piece are instantly increased, the continuously tensioned part at the inner end of the cantilever beam is effectively reinforced and protected, and the probability of damage of the connected part due to long-term tension of the long beam component caused by sagging is further reduced; and because the tensile plate and the tensile bolt are arranged, the joint of the cantilever beam and the mounting piece is sufficiently reinforced, so that the number of the original four transverse connecting bolts of the butt joint part can be reduced to two, and the waste of materials is avoided on the premise of ensuring safety.

Preferably, the mounting plate is provided with two through holes, two lower internal thread sleeves are correspondingly embedded in the edge of the floor, the mounting plate is fixed with the edge of the floor through two connecting bolts which penetrate through the corresponding through holes and are screwed into the corresponding lower internal thread sleeves, and the two connecting bolts are respectively positioned at the upper left corner and the upper right corner of the mounting plate; in summary, four connecting bolts originally distributed at four corners of the mounting plate are simplified into two connecting bolts positioned at the left upper corner and the right upper corner; like this for the mounting panel is connected with the floor and is more accorded with the actual atress condition that upper portion was drawn the lower part pressurized, will be located about two bolts that play a little to connecting the performance of lower angle save, avoid extravagant, reduce the consumptive material.

As further preferred, every via hole is horizontal waist type hole, like this, can do horizontal fine setting to connecting bolt's position, and the connecting bolt of being convenient for can screw in the lower internal thread sleeve that corresponds in this layer of floor, makes things convenient for the assembling process.

Preferably, the lower lifting appliance used for being hooked with the lower end of the lifting rod is welded on a bottom plate, the upper flange plate of the cantilever beam is provided with a plurality of assembling positions, each assembling position is provided with an installing hole, and the bottom plate is installed at one assembling position through a connecting bolt penetrating through the corresponding installing hole; like this, the bottom plate and lower hoist can be followed the horizontal nimble mounted position of selecting of cantilever beam, and then ensure that jib hook installation back jib inclination satisfies the interval of designing requirement, 45 ~ 60 degrees within ranges promptly.

Preferably, an upper internal thread sleeve is pre-embedded at the edge of the upper floor, a main screw is screwed in the upper internal thread sleeve, and an upper lifting appliance is welded at the outer end of the main screw; the upper hanger comprises two lug plates and a middle connecting plate which are integrally formed, the same lock pin penetrates through the lug holes of the two lug plates, the lock pin is hooked by the upper hook of the hanger rod, and a space for the upper hook to transversely swing is reserved between the two lug plates; like this, obviously simplified the connection structure of jib upper end and upper floor, can ensure the intensity and the firmness of being connected of jib upper end and upper floor, can ensure the jib again and swing by a small margin between two otic placodes, make the horizontal projection of jib coincide with the cantilever beam all the time.

Still further preferably, the hanger rod comprises an upper pull rod, a middle turnbuckle and a lower pull rod; the turnbuckle comprises a turnbuckle body, a turnbuckle body and a turnbuckle body, wherein the turnbuckle body is provided with a central hole and a lower circular tube; the upper round pipe is screwed with an upper screw rod, the upper screw rod is provided with an upper hanging ring, and a hook at the lower end of the upper pull rod is hooked with the upper hanging ring; the lower circular tube is screwed with a lower screw rod, the lower screw rod is provided with a lower hanging ring, and a hook at the upper end of the lower screw rod is hooked with the lower hanging ring; compared with the common turnbuckle, the middle section of the turnbuckle is completely sealed, so that the sealing performance is good, the screws in the turnbuckle are prevented from rusting, overlooking and blocking, and the service life is long; moreover, the middle hexagonal pipe in the middle of the turnbuckle is convenient for grasping and applying force, and the process of adjusting the length of the turnbuckle by screwing the screw rod is further convenient and fast.

Preferably, the upper flange plate of the cantilever beam is sleeved with two C-shaped fixture blocks in a clearance manner, the upper end of each C-shaped fixture block is welded with a vertical positioning rib, a lower flange of each C-shaped fixture block is communicated with a threaded hole, and a positioning bolt for abutting against the upper flange plate to lock the position of the corresponding C-shaped fixture block is screwed in the threaded hole; the upright posts of the scaffold frame body are hollow tubular and sleeved on the corresponding positioning ribs; thus, in the process of erecting the frame body, the frame body is provided with an inner row of upright columns and an outer row of upright columns, the frame body is placed on a row of multiple cantilever beams, and each cantilever beam is provided with an inner positioning rib and an outer positioning rib, so that the outer row of upright columns of the frame body are sleeved on the positioning ribs on the outer side of each cantilever beam, and the inner row of upright columns of the frame body are sleeved on the positioning ribs on the inner side of each cantilever beam; and because the transverse position of two interior outer location muscle on every cantilever beam of this application all is adjustable, this is convenient for registrate the two rows of stands of the inside and outside of scaffold frame on the inside and outside location muscle that corresponds, makes scaffold frame body set up the process operations who shelves at the cantilever beam convenient.

Drawings

Fig. 1 is a schematic structural diagram of the non-orthogonal adjustable flower basket type overhanging scaffold support system of the present invention.

Fig. 2 is an exploded view of the non-orthogonal adjustable basket-type overhanging scaffold support system of the present invention.

Fig. 3 is a schematic view of the structure of fig. 2 after being deflected by a certain angle.

The structure of the floor comprises a cantilever beam 1, a web plate 1.1, an upper flange plate 1.2, an upper flange plate 2, a floor slab layer 3, a mounting plate 4, a shaft seat 5, a mounting piece 5.1, a hinge plate 5.2, an end plate 5.3, a bolt plate 5.4, a tensile plate 6, a connecting bolt 7, a shaft hole 8, a fastening bolt 9, a fastening nut 10, a tensile bolt 11, a through hole 12, a lower inner threaded sleeve 13, a bottom plate 14, a mounting hole 15, an upper floor slab 16, an upper inner threaded sleeve 17, a main screw 18, an upper hanger 18.1, an ear plate 18.2, a connecting plate 18.3, a lock pin 19, an upper pull rod 20, a basket bolt 20.1, a closed sleeve 20.2, an upper screw 20.3, a lower screw 21, a lower pull rod, a C-shaped fixture block 22, a positioning rib 23, a positioning bolt 25, a transverse limiting rib 26, a lower hanger 27, an upper hanger 28, a lower hanger and a lower hanger.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-3, the non-orthogonal adjustable flower basket type overhanging scaffold supporting system of the present invention comprises a suspension rod, a short steel type overhanging beam 1 and a mounting plate 3 fixed at the edge of the floor 2. The short section steel type is a type that the section steel is short in length and the end part of the section steel is connected with the edge of a floor slab; the difference is the long steel type, namely the type that the steel section is long and the inner section of the steel section is placed and fastened on the upper surface of the floor slab.

The mounting panel 3 is equipped with two via

holes

11, and 2 marginal correspondence pre-buried have two internal thread sleeves 12 down of this floor, and the welding has spacing horizontal muscle 25 that is used for injecing distance each other between two internal thread sleeves 12 down, and spacing horizontal muscle 25 is pre-buried in this floor 2 concrete together with two internal thread sleeves 12 down. The mounting plate 3 is fixed with the edge of the floor 2 of the floor through two connecting bolts 6 which penetrate through the corresponding through holes 11 and are screwed into the corresponding lower internal thread sleeves 12, and the two connecting bolts 6 are respectively positioned at the upper left corner and the upper right corner of the mounting plate 3. The two through holes 11 of the mounting plate 3 are both transverse waist-shaped holes.

The outer surface of the mounting plate 3 is welded with a shaft seat 4, a mounting piece 5 is arranged between the cantilever beam 1 and the shaft seat 4, and the mounting piece 5 is formed by sequentially welding two transverse hinged plates 5.1 at the inner end, a middle end plate 5.2 and two vertical screwed plates 5.3 at the outer end. The inner end of a web plate 1.1 of the cantilever beam 1 is clamped between the two bolted plates 5.3, and the web plate 1.1 and the two bolted plates 5.3 are connected through a transverse connecting bolt 6; the two connecting bolts 6 for connecting the web plate 1.1 of the cantilever beam 1 and the two bolting plates 5.3 are arranged in a vertical row, and the connecting bolts 6 transversely penetrate through the web plate 1.1 and the two bolting plates 5.3. The outer surface of the end plate 5.2 is also welded with a left tensile plate 5.4 and a right tensile plate 5.4, the inner side edge of each tensile plate 5.4 is welded with the upper edge of the same-side screwed plate 5.3, namely the right side edge of the left tensile plate 5.4 is welded with the upper edge of the left screwed plate 5.3, and the left side edge of the right tensile plate 5.4 is welded with the upper edge of the right screwed plate 5.3; the left tensile plate 5.4 is fixed with the left part of the inner end of the upper flange plate 1.2 of the cantilever beam 1 through a vertical tensile bolt 10, and the right tensile plate 5.4 is fixed with the right part of the inner end of the upper flange plate 1.2 of the cantilever beam 1 through a vertical tensile bolt 10.

The shaft seat 4 is clamped between the two hinged plates 5.1, the shaft seat 4 and the two hinged plates 5.1 are both provided with shaft holes 7 in a penetrating manner, the shaft seat 4 and the shaft holes 7 of the two hinged plates 5.1 are sleeved with the same fastening bolt 8, and the fastening bolt 8 is screwed with a fastening nut 9 for clamping the shaft seat 4 and the two hinged plates 5.1.

A lower hoist 26 for hooking with the lower end of the suspender is welded on a bottom plate 13, a plurality of assembling positions are arranged on an upper flange plate 1.2 of the cantilever beam 1, each assembling position is provided with a mounting hole 14, and the bottom plate 13 is arranged at one of the assembling positions through a connecting bolt 6 which penetrates through the corresponding mounting hole 14.

An upper internal thread sleeve 16 is embedded in the edge of the upper floor 15, a main screw 17 is screwed in the upper internal thread sleeve 16, and an upper lifting appliance 18 is welded at the outer end of the main screw 17. The upper hanger 18 comprises two lug plates 18.1 and a middle connecting plate 18.2 which are integrally formed, the same lock pin 18.3 penetrates through the lug holes of the two lug plates 18.1, the lock pin 18.3 is hooked by the upper hook of the hanger rod, and a space for the upper hook to transversely swing is reserved between the two lug plates 18.1.

The boom comprises an upper tie rod 19, a central turn buckle 20 and a lower tie rod 21. The turnbuckle 20 comprises a closed sleeve 20.1, an internal thread is arranged in the center hole of the closed sleeve 20.1, and the closed sleeve 20.1 is composed of an upper circular tube, a middle hexagonal tube and a lower circular tube. An upper screw rod 20.2 is screwed on the upper round pipe, the upper screw rod 20.2 is provided with an upper hanging ring 27, and a hook at the lower end of the upper pull rod 19 is hooked with the upper hanging ring 27; the hook at the upper end of the upper pull rod 19 is hooked with the lock pin 18.3 of the upper sling 18. The lower round tube is screwed with a lower screw rod 20.3, the lower screw rod 20.3 is provided with a lower hanging ring 28, a hook at the upper end of the lower pull rod 21 is hooked with the lower hanging ring 28, and a hook at the lower end of the lower pull rod 21 is hooked with the lower hanger 26.

Two C-shaped clamping blocks 22 are sleeved on an upper flange plate 1.2 of the cantilever beam 1 in a clearance mode, a vertical positioning rib 23 is welded at the upper end of each C-shaped clamping block 22, a lower flanging of each C-shaped clamping block 22 is communicated with a threaded hole, and a positioning bolt 24 used for abutting against the upper flange plate 1.2 to lock the position of the corresponding C-shaped clamping block 22 is screwed in the threaded hole. The stand of scaffold frame body is for cavity tubulose and stand registrate on the location muscle 23 that corresponds, and specific saying so, the support body of scaffold has two rows of stands inside and outside, and the support body is shelved on one row of many cantilever beams 1, and every cantilever beam 1 then is equipped with two inside and outside location muscle 23, so, the lower shed of one row of stand of support body outside just overlaps on the location muscle 23 in each cantilever beam 1 outside, and the lower shed of one row of stand of support body the inside just overlaps on the location muscle 23 of each cantilever beam 1 inboard.

The connecting bolt 6 and the tensile bolt 10 of the present application adopt an M24 specification, the positioning bolt 24 adopts a bolt of a smaller specification, and the fastening bolt 8 adopts an M48 specification.

Claims

1. A non-orthogonal adjustable flower basket type overhanging scaffold supporting system comprises a suspender, an overhanging beam (1) and a mounting plate (3) fixed at the edge of a floor slab (2); the mounting plate (3) is welded with a shaft seat (4), a mounting piece (5) is arranged between the cantilever beam (1) and the shaft seat (4), and the mounting piece (5) is formed by sequentially welding two transverse hinged plates (5.1) at the inner end, a middle end plate (5.2) and two vertical hinged plates (5.3) at the outer end; the inner end of a web plate (1.1) of the cantilever beam (1) is clamped between the two bolted plates (5.3), and the web plate (1.1) is connected with the two bolted plates (5.3) through a transverse connecting bolt (6); the shaft seat (4) is clamped between the two hinged plates (5.1) and is penetrated with a shaft hole (7), the shaft seat (4) and the shaft holes (7) of the two hinged plates (5.1) are sleeved with a fastening bolt (8), and the fastening bolt (8) is screwed with a fastening nut (9); the method is characterized in that: the outer surface of the end plate (5.2) is further welded with a left tensile plate and a right tensile plate (5.4), the inner side edge of each tensile plate (5.4) is welded with the upper edge of the bolt plate (5.3) on the same side, and each tensile plate (5.4) is fixed with the left part or the right part of the inner end of the upper flange plate (1.2) of the cantilever beam (1) through a vertical tensile bolt (10); two connecting bolts (6) are used for connecting the web plate (1.1) of the cantilever beam (1) and the two bolted plates (5.3).

2. The non-orthogonal adjustable flower basket type overhanging scaffold support system of claim 1, wherein: mounting panel (3) are equipped with two via holes (11), and this layer floor (2) edge is pre-buried to have two internal thread sleeves (12) down correspondingly, and mounting panel (3) are through two connecting bolt (6) and this layer floor (2) edge-fixing that pass corresponding via hole (11) and screw in correspond internal thread sleeve (12) down, and two connecting bolt (6) are located the upper left corner and the upper right corner of mounting panel (3) respectively.

3. The non-orthogonal adjustable flower basket cantilever scaffold support system of claim 2, wherein: each via hole (11) is a transverse kidney-shaped hole.

4. The non-orthogonal adjustable flower basket cantilever scaffold support system of claim 1, wherein: a lower lifting appliance (26) used for being hooked with the lower end of a suspender is welded on a bottom plate (13), a plurality of assembly positions are arranged on an upper flange plate (1.2) of a cantilever beam (1), each assembly position is provided with a mounting hole (14), and the bottom plate (13) is mounted at one of the assembly positions through a connecting bolt (6) penetrating through the corresponding mounting hole (14).

5. The non-orthogonal adjustable flower basket type overhanging scaffold support system of claim 1, wherein: an upper internal thread sleeve (16) is embedded in the edge of the upper floor (15), a main screw (17) is screwed in the upper internal thread sleeve (16), and an upper hanger (18) is welded at the outer end of the main screw (17); the upper hanger (18) comprises two lug plates (18.1) and a middle connecting plate (18.2) which are integrally formed, the same lock pin (18.3) penetrates through the ear holes of the two lug plates (18.1), the upper hook of the hanger rod hooks the lock pin (18.3), and a distance for the upper hook to transversely swing is reserved between the two lug plates (18.1).

6. The non-orthogonal adjustable flower basket cantilever scaffold support system of claim 1, wherein: the suspender comprises an upper pull rod (19), a turnbuckle (20) in the middle and a lower pull rod (21); the turnbuckle (20) comprises a closed sleeve (20.1), the central hole of the closed sleeve (20.1) is provided with internal threads, and the closed sleeve (20.1) consists of an upper circular tube, a middle hexagonal tube and a lower circular tube; the upper round pipe is screwed with an upper screw rod (20.2), the upper screw rod (20.2) is provided with an upper hanging ring (27), and a hook at the lower end of the upper pull rod (19) is hooked with the upper hanging ring (27); the lower round tube is screwed with a lower screw rod (20.3), the lower screw rod (20.3) is provided with a lower hanging ring (28), and a hook at the upper end of the lower pull rod (21) is hooked with the lower hanging ring (28).

7. The non-orthogonal adjustable flower basket cantilever scaffold support system of claim 1, wherein: two C-shaped clamping blocks (22) are sleeved on an upper flange plate (1.2) of the cantilever beam (1) in a clearance mode, a vertical positioning rib (23) is welded at the upper end of each C-shaped clamping block (22), a threaded hole is formed in a lower flanging of each C-shaped clamping block (22) in a penetrating mode, and a positioning bolt (24) used for abutting against the upper flange plate (1.2) to lock the position of the corresponding C-shaped clamping block (22) is screwed in the threaded hole; the upright posts of the scaffold frame body are hollow tubular and are sleeved on the corresponding positioning ribs (23).