GB2182077A - Concrete reinforcement supporting pad - Google Patents

Abstract

The pad comprises a triangular upstanding supporting prop made of punched metal plate which clamps steel reinforcements or ribs 20. Two side legs 12 extend convergently from a base 13 and end in clamping jaws 11. Members 14 extend inwardly of the legs adjacent the jaws so that under load from rib 20 a clamping force is transmitted to the jaws by pivotal deflection of the legs with respect to the base. An alternative pad includes a hooked clamp 15 comprising a laminar member formed from extensions of the legs. <IMAGE>

Description

SPECIFICATION Steel reinforcement supporting pad for civil construction The present invention relates to a supporting pad for use in supporting a reinforcing rib in spaced relationship from an understructure and in particular but not exclusively for use as a steel rib supporting means typically used in Civil Construction in the building of reinforced concrete (RC) floors.

The current practices employed to maintain due clearance between steel ribs and an understructure or module plates at a job site, in connection with the building of an RC floor includes providing a stone foundation or supporting by means of square-shaped or rectangularly shaped cement plinth. The method of stone foundation leaves much to be desired since it is not always possible to pick up stones of like or substantially like size on the spot, such that it is often a faiiure to try to maintain a same elevation for the foundation, stone foundation is a method that is much restricted in application because it fails to apply as erected plinth, not to mention the possibility that the stone foundation will collapse owing to externally applied impacts, shocks acting upon the steel ribs being supported thereby; as for the latter practice involving supporting of steel ribs by squarely or rectangularly shaped cement plinth, it is a pity to realize that whereby the cement cushion abuts merely against a position tangential to the round stems of steel ribs, such that an error, however minimal, in a position horizontal to both the steel rib and the module plate altogether, will result in total loss of the supporting effects, so something has to be done to correct all these shortcomings, as would doubtless be admitted to by all professionals in the industry.

Accordingly proposals have been submitted prior to my application, for example one improvement claimed to be 'Member to keep the steel ribs at a distance from the module plates', which supporting member has been found to be unreliably thin, subject to stumbling and therefore easy failure in the presence of petty disturbances, besides, in applying erection of such a member to support a module plate, barbwire will have to be used to bind them tight, the binding will work all right on three faces of the module plate excepting the last module which is never to handle with according to this approach, so there has been proposed another approach known as 'Member to maintain a clearance between the steel rib and the module plate at a slope', which works all right for operations of large distances as well as small distances, still in view of the fact that for the construction design of the ground floor a certain clearance has to be kept between the reinforcement steel and the module plate, so application of such an 'eccentric member' will incur detailed cross-check of the exact distance to apply, error, however small in any respect, can disadvantageously affect the installation of the next member, in addition, at moments when plasters are to be filled, the pressure building up altogether will often serve to displace the 'eccentric member', thereby defeating the function of supporting expected to be discharged by the 'eccentric member' proposed according to that art.

According to the present invention there is disclosed a supporting pad for use in suppoerting a reinforcing rib in spaced relationship from an understructure comprising a base for abutting with the understructure, two side legs extending convergently from the base, and clamp means supported by the side legs for clamping a reinforcing rib wherein the base, side legs and clamping means are of integral construction and formed from a metallic sheet.

Preferably the legs comprise portions of the metallic sheet each having at least one longitudinally extending formation for providing rigidity thereto.

Advantageously the legs include plicated formations.

In a preferred embodiment the clamping means comprises a pair of jaws each being an extension of a respective side leg and further comprising a pair of members each extending inwardly from a respective side leg adjacent to the jaws such that a rib when clamped by the jaws and biassed towards the base engages the respective members and a clamping force is transmitted to the jaws by pivotal deflection of the legs with respect to the base.

Alternatively the clamping means comprises a laminar hooked member formed from two layers comprising extending portions of the respective side legs.

An advantage of the invention is to provide a pad punched to formation by throughput processing, and which permits prompt engagement over the perimeter of a steel rib serving typically as a reinforcement in an RC structure, the floor of a building for example, so as to maintain a desired clearance between the steel rib and the module plate, and that all the more reliably and securedly in proportion to increase of the load that is the steel rib.

A further advantage of the present invention is to provide the structure of a steel reinforcement supporting pad for application in Civil Construction, utilising metal base through continuous punching and single type-setting, which is easy to produce, permits mass production at reasonable costs, and permits utilisation of scraps for metal processing or related industrial exploitation, thereby avoiding waste of materials. X A further advantage of the present invention is to provide the structure of such a steel reinforcement supporting pad having all the characters described heretofore, and further permits securing the setting of steel ribs by using as many units of the supporting pads as practicable so that the rib-pad embodiment may straighten down as it should by gravitation force, and this means utmost save of labor and time.

Other features and advantages of the present invention will emerge from the following descriptions of embodiments given by way of illustration but not in any way limiting, with reference to the accompanying drawing in which: Figure 1 is a three-dimensional perspective of the invention device; Figure 2 is an illustration of the situation wherein a steel rib has been engaged across the upper section of the invention device for further execution of the construction engineering; Figure 3 is an illustration of the invention device embodied such that both of the side walls are bent to yield a configuration resembling the letter W; Figure 4 is an illustration of the invention device embodied such that both of the side walls are bent to yield a sawtoothed configuration;; Figure 5 is an illustration of the notched top of a disposing member structured according to one embodiment of the invention; Figure 6 is an illustration of the invention device embodied such that its notched top is treated substantially arcuated; Figure 7 is an illustration of the invention device embodied such that its notched top is treated rhomboidal; Figure 8, Figure 9 and Figure 10 illustrate altogether how it appears when a steel rib, seen in a direction pointing to the viewer, is loaded in an invention device hereunder, embodied in a manner as illustrated in Fig. 5, Fig.

6 and Fig. 7 respectively; Figure 11 is an illustration of the invention device embodied so at the top section thereof appears to be a single piece having a circularly notched rebate as the access for coupling with a steel rib that is a reinforcement in an RC structure; Figure 12 is an illustration of the invention device embodied substantially the same as the one shown in Fig. 11 excepting that the rebate takes a square profile; Figure 13 is an illustration of the invention device embodied substantially the same as the one shown in Fig. 11 excepting that the rebate takes an octahedral profile; Figure 14 is an illustration of the invention device embodied substantially the same as the one shown in Fig. 12 excepting that the base takes the profile of the inverse of the letter V;; Figure 15 is an illustration of the invention device embodied substantially the same as the one shown in Fig. 12 excepting that the base takes the profile of a trapezoid with the base side excluded.

Referring first of all to Fig. 1, Fig. 2, it will be seen that the invention device titled steel reinforcement rib supporting pad for civil construction is a mold product of metal base gone through punch processings, in substance it comprises a hoop chuck section 11, a pair of opposing, outstretched opening 111, two interactive sides 12 standing at convergent slopes limited by the hoop chuck 11, a flat base 13, altogether it is produced by integrated punching techniques. On the upper half of the side leg 12 is provided a disposing member 14 bending inwardly but parallelling the other corresponding member 14 on the other supplementary side leg 12, this disposing member being accountable for the upkeeping of the steel rib in position, on the lower side of the side leg are provided three flangettes 121 to fortify reinforcement requirements.

The aperture 111 relative to the chuck head 11 permits opening and damped closure with elasticity, such that a steel rib, if and when placed therein, will cause the aperture 111 to stretch out as it should by virtue of the gravitation of the load that is the steel rib, so that eventually the steel rib 20 sits engaged reliably in the chuck head 11, in the meantime abutting against the adjacent disposing member 14, with the disposing member 14 being brought down owing to the gravitation of the steel rib, the chuck head 11 will clamp even tighter to set the steel rib all the more secured in position at a clearance of desired dimension like what is shown in Fig. 2.

By referring to Fig. 3, Fig. 4 it will be seen that to increase the strength to withstand loads of both side legs 12, the wall-like surface may be punched to yield the profile W 122, like what is shown in Fig. 3, or else punched to yield the sawtooth profile 123, like what is shown in Fig. 4, thus further building the toughness of the whole device.

Furthermore, to provide for a disposing memer 14 that will stand in a better position to bear against load-induced stresses, oblique cross notch 141, like what is shown in Fig. 5, may be provided on the upper rim of the disposing member 14, or alternatively such an oblique cross notch 141 may be replaced by an arcuated notch 142, like what is shown in Fig. 6, or else substituted by a rhomboidal notch, preferably 1200 at the intersection, as shown in Fig. 7. Moreover, on both sides of the arcuated notch 142, and of the rhomboidal notch 143, and the part in association with the side segment 12 an extension of the rib may be provided by option, this will help to further withstand stresses induced by active loads composed of the steel ribs.

When a steel rib 20 is supported upon notch 141, 142 or 143, as shown in Fig. 8, Fig. 9 and Fig. 10 respectively, relative to the disposing member 14, then, as the notch has a greater surface of contact, so that the chuck orifice 11 will tighten up in response to the downgoing pressure resulting from the proper gravitation of the steel rib, to the effect that the steel rib 20 will become all the more secured in position. In execution the invention device may be applied in series with regard to steel ribs 20 to a number appropriate, a supporting pad once engaged by the steel rib will automatically adjust itself to a state perpendicular to the ground or other base level, lying established on the module plate, the execution is simple enough while making possible utmost save of labor and costs impossible with conventional executions.

By continuing to refer to Fig. 11 it will be seen that in addition to the many different embodiments disclosed hereinbefore, the invention device may be embodied otherwise by providing for a single strutting unit 15 on top, a circular chuck head 151 by the side, a lug 152 as provided to simulate a hanging hook about the chuck head, this in order to better facilitate engagement of the steel rib 20 through the chuck head; whereas on the underside of the side segment 12 are provided three flangettes 121 in addition to an oblong reinforcement rim 122 projecting outwardly or inwardly central to the wall. It has to be pointed out in particular that the chuck head of the invention device may take the form of a square 153, like what is shown in Fig. 12, of an octahedron 154, like what is shown in Fig.

13, or else of a rhomboid 155, like what is shown in Fig. 14, or else of a circle, 151, all of them and other variants appropriate to the case will serve to the purpose of better supporting a steel rib to work with.

In regular embodiments the base 13 is arcuated to bulge out upwardly a little bit and complete with three jutting reinforcement rims 131, still it is also acceptable to convert the base 13 into the form of an inverted V, complete with three outstretched reinforcement rims 131, like what is shown in Fig. 15, all this serving to build up strength, stability, convenience and desirability beyond comparison by existing executions, or any other like products known to date.

All in all, the present invention, actually an improved device to give support of steel ribs, is one designed with much deliberation to achieve such advantages as ease of use on steel ribs for application in an RC structure, permissibility for mass production at reduced costs, permissibility to bear with more heavy and heavy-set loads of steel ribs and render them all the more sturdy and strengthful in the construction, so that it is deemed to be a truly worthwhile piece of invention bound to be appreciated by the industrial concerns particularly those engaged in the construction business everywhere and anytime.

Claims (13)

1. A supporting pad for use in supporting a reinforcing rib in spaced relationship from an understructure comprising a base for abutting with the understructure, two side legs extending convergently from the base, and clamp means supported by the side legs for clamping a reinforcing rib wherein the base, side legs and clamping means are of integral construction and formed from q metallic sheet.

2. A support pad as claimed in Claim 1 wherein the legs comprise portions of the metallic sheet each having at least one longitudinally extending formation for providing rigidity thereto.

3. A support pad as claimed in Claim 2, including legs having plicated formations.

4. A supporting pad as claimed in any preceding claim wherein the clamping means comprises a pair of jaws each being an extension of a respective side leg and further comprising a pair of members each extending inwardly from a respective side leg adjacent to the jaws such that a rib when clamped by the jaws and biassed towards the base engages the respective members and a clamping force is transmitted to the jaws by pivotal deflection of the legs with respect to the base.

5. A supporting pad as claimed in Claim 1 wherein the clamping means comprises a laminar hooked member formed from two layers comprising extending portions of the respective side legs.

6. Steel reinforcement supporting pad as claimed in Claim 1 for application in civil construction, composed of metal base moldpunched to formation, and comprising two side legs substantially extensions of the base portion each turning upwards convergently to form the top, an annularly shaped chuck head within the top section, the upmost part of the chuck head forming an opening rebase by 45 , each side leg having a number of disposing members parallelling each other and appearing to be at right angle with the base, the notch on top the disposing members appearing to be at a slope with regard to the horizontal level, the underside of each side leg provided with three flangettes for purpose of reinforcements, such that once a steel rib, otherwise called steel reinforcement, is placed upon the disposing member through the annular chuck head, the disposing member assumes the support whilst the tighten-up stress to prevail owing to the disposing member bearing upon the chuck head will serve to tight-hold the steel rib at a desired distance from the module plate used in the Construction.

7. Steel rib supporting pad according to Claim 6, characterised in that both of the side legs relative to the base can take the configuration of waveform or else of sawtooth profiles.

8. Steel rib supporting pad according to Claim 6 characterised in that the notched top rim of the disposing member can have the contour of an arcuated pattern or else a rhomboid.

9. Steel rib supporting pad for application in Civil Construction, comprising a base, extensions from either end of the base to form a conjugate pair of supporting sides which converge altogether to form a top support which appears to be perpendicular with respect to the ground level, a chuck head being formed in the top support, the top edge of the chuck head furnished with lugs, the side leg having an oblong relief protrusion at the central area, the side leg further provided with three flangettes on the under side, the base sheet pointing slightly upwards and complete with three jutting reinforcement rims, so that once a steel rib is engaged in the chuck head, the device will provide a secured hold of the rib with desired clearance secured between the rib and the module plate used in the Construction.

10. Steel rib supporting pad according to Claim 9, characterised in that by design the chuck head can take the pattern of a circle, a quadrilateral an octagon or a rhomboid.

11. Steel rib supporting pad, characterised in that the base structural thereof can take the form of the Greek letter lambda, or else a trapezoid devoid of the base line.

12. A supporting pad as hereinbefore disclosed with reference to and as shown in Figs. 1 and 2 of the accompanying drawings or as modified in any of Figs. 3 to 10.

13. A supporting pad as hereinbefore disclosed with reference to and as shown in Fig.

11 of the accompanying drawings or as modified in ay of Figs. 12 to 15.