CN2097242U

CN2097242U - Improved fixing screw stem for grouting shuttering

Info

Publication number: CN2097242U
Application number: CN 91206599
Authority: CN
Inventors: 陈仁真
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-04-17
Filing date: 1991-04-17
Publication date: 1992-02-26

Abstract

An improved fixing screw stem for grouting shuttering of the utility model is provided with a conical body of prearranging length on the body of the screw stem and the screw stem can fast be took out from temporary solidified concrete walls when demounting the shuttering by the aid of different external diameter arranged in two ends of the conical body. The screw stem can be provided with a grommet body of geometric at the outer end of the screw stem for shuttling and clamping billets according to needs of execution. The other end can be provided with screws spiro union with nut caps and fasteners, wherein, the top and the root of the screws (the screws including cap nuts) is circular or elliptical or arched. The two ends of the conical body on the screw stem can be designed into a short cylinder for making the holes formed by the concrete walls insert into a cover body according to the needs of execution.

Description

Improved fixing screw stem for grouting shuttering

The utility model relates to a kind of improved grouting template standing screw, refers to a kind of standing screw that is contained in the architecture advances between two templates when concrete perfusion especially.

Generally be that two templates are separated placement relative to one another when concrete perfusion, its fixed form generally has the evolution of following manner:

(1) traditional fixed form is to articulate two templates fixing mutually with iron wire, this kind mode since the template spacing during the iron wire fixed form be difficult for being limited in the desired scope of constructor, that is the moment that is produced when a large amount of concrete grouts pour in the form spacing desires to make iron wire pull apart or make the iron wire unbalance stress to cause the template dystopy often, causes that the formed wall thickness of concrete is thin to differ.

(2) at the defective of traditional work, someone develops a kind of advanced fixing templates, see also Figure 12, it utilizes one group of a lot of screw rod A, its two end is provided with screw thread A1, bar upper sleeve through one plastic cement pipe also is fixed on the two template D by fastener C, make two template D(D) spacing keep certain width, but owing to have the gap between plastic cement pipe B and the screw rod A, the extruding force of the very big moment that produces forces plastic cement pipe B depressed deformation in a large amount of concrete grouts pours into its interval, and concrete grout more may infiltrate in the formed gap of plastic cement Guan Naiyu screw rod A, when dismantling template D so far, screw rod A and plastic cement pipe B knot can't be extracted screw rod A together from the concrete wall that temporarily solidify, must beat and screw rod A can be taken out by utensil, the destroyed nothing left of concrete local location when still taking out.

(3) moreover, the screw thread A1 of its two end of standing screw A that this is habitual constitutes by the screw thread of sharp V-type, also is sharp V-type with respect to the cooperation of the screw thread in the nut A2, this kind screw thread is the employed screw thread of general five metals.Because screw thread A1 has sharp-pointed V-type; when concrete perfusion; cement will inevitably spray; be stained with and be linked to root (Root) portion or other positions in the screw thread; because the root radian of V-type is narrow and small; the rotation of nut also is difficult to make tooth peak (Crest) by tooth root portion; chasing after north its, to punish knot be to be that the root of V-type and peak portion angle are narrow; at the moon; pin thread acts on down mutually; formed turning moment (frictional force) can't force the clod of being stained with subsides to come off; especially screw thread is bound to get rusty through the infiltration of aqueous vapor; cause when dismounting fastener C; can't successfully unscrew nut A2; therefore screw thread is stained with to post the cement block grain or get rusty after the nut A2 that also can get loose fast mud pellet or rust body are come off, be the another problem that the utility model is desired to study intensively again.

(4) after screw rod A is extracted out from concrete wall E, that is stay the large and small bellmouth that differs at the inner, external wall of wall E, this hole is must hide, fill and lead up for the wall appearance and whitewash one deck powdering layer again further to make the smooth in appearance complanation of wall, but present situation is, filling and leading up of the large and small hole of differing that concrete wall are left, by the hand-held concrete grout of people two holes in hole are filled and led up, sealed, the not only original but also lost labor of this kind method is its shortcoming again.

Main purpose of the present utility model is to overcome the above-mentioned defective of prior art and a kind of improved grouting template standing screw is provided, and this screw rod can be removed from concrete wall quickly and easily and not destroy concrete.

Another purpose of the present utility model is to provide a kind of improved grouting template standing screw, is fixed on the template or can saves artificial when template is dismantled in a large number and group is unloaded rapid and convenient.

Another purpose of the present utility model is to provide a kind of improved grouting template standing screw, even the screw thread on this screw rod has attached clod grain or corrosion, and also can be fast by the nut turn, to reach dismounting easily fast.

Another purpose of the present utility model is to provide a kind of improved grouting template standing screw, and screw rod is extracted formed two openends of concrete wall out can cooperate columniform lid, and to reach the hole of closed concrete wall, its construction is quick, convenient and lower cost.

A kind of improved grouting template standing screw of the present utility model, it can be located between the template of two tools desire concrete placings slurry at regular intervals and by fastener and be fixed on the template, it is characterized in that: the bullet that on the screw rod body, is provided with predetermined length, have different external diameters by bullet two ends, screw rod can take out from the concrete wall that temporarily solidify quickly and easily when making the dismounting template.

In addition, can be according to the needs of construction, the clasp body that is provided with geometric form in the outer end of screw rod is for the steel bar clip that shuttles back and forth, and the other end can have the screw thread that is spirally connected with nut, fastener, and peak portion of this screw thread (screw thread that comprises nut) and root are the oval or bent arc of circular arc.Also can need, screw rod epicone body two ends are designed to have short cylinder according to construction.Screw rod is extracted the formed hole in back out from concrete wall, can insert lid.

For achieving the above object, existing conjunction with figs. is described in detail feature of the present utility model and effect thereof, wherein:

Fig. 1 is three-dimensional decomposition and combination figure of the present utility model;

Fig. 2 is implemented on schematic partial sectional view in the concrete structure for the utility model;

The partial schematic diagram that Fig. 3 is taken out in concrete wall fast for the utility model screw rod;

Fig. 4 is the transverse cross of the utility model screw rod;

Fig. 5 is the stereogram of another embodiment of the utility model;

Fig. 6 is implemented on the interior schematic partial sectional view of concrete wall for screw rod shown in Figure 5;

The action schematic diagram that Fig. 7 is drawn out of for the screw rod 10 among Fig. 6;

Fig. 8 is the partial side planar view of Fig. 6;

Fig. 9 is the three-dimensional exploded view of the another embodiment of the utility model;

Figure 10 is the plan view of screw rod 10 shown in Figure 9;

Figure 11 is that the hole of being reserved was placed into the schematic partial sectional view of lid after screw rod shown in Figure 10 was drawn out of outside concrete wall;

Figure 12 is the embodiment schematic diagram of known grouting template standing screw;

Figure 13 is the enlarged drawing of the screw thread of the utility model standing screw.

At first see also Fig. 1 and 2, screw rod 10 its two ends of the present utility model are provided with screw thread 12, screw rod 10 is to shuttle back and forth to be fixed in 20 of two templates with spacing, screw thread 12 is that affixed two fasteners 16 reach fixed head 20(20) effect, it is characterized in that: the predetermined length in screw rod 10 its bodies two template 20(20) is provided with bullet 18, be that two ends by bullet 18 have different external diameters, cause dismounting template 20(20) time screw rod 10 can from the concrete wall 50 that temporarily solidify, take out apace.

See also Fig. 5,6 and 7, there is shown another embodiment of the present utility model, accidental quality of the present utility model is: the outer end of screw rod 10 is provided with the clasp body 17 of geometric form can be for steel bar 50 clip that shuttles back and forth, the other end has the screw thread 12 that can be spirally connected with nut 14, fastener 16, the peak portion 121 and the root 122 of this screw thread (screw thread that comprises nut) are the oval or bent arc of circular arc, referring to Figure 13.

See also Fig. 9,10 and 11, there is shown the another embodiment of the utility model, another two ends that are characterised in that the bullet 18 of screw rod 10 of the present utility model can be designed to have short cylinder 19, and break away from the formed post of concrete hole 52 by cylinder 19 and can insert a lid 54 in order to the powdering of whitewashing layer.

According to the description of above-mentioned feature, it really has following superior efficacy when implementing:

(1) see also Fig. 4, the utility model bullet 18 is to be coated on the screw rod 10 by the mode of powerful plastic cement with ejection formation, because the part of the screw rod 10 that is coated is equipped with ratchet 11, so can be integral with powerful plastic cement strong bonded.Therefore when from concrete 50, extracting out bullet 18 can slippage on screw rod 10, bullet 18 is to utilize plastic rubber ejaculate molding again, so it makes processing fast, with low cost, and owing to have the design of the bullet 18 of various outer diameter, can be extracted as long as break away from concrete 50 with the end with big external diameter, its effect is quite remarkable at once.

(2) see also Fig. 5,6 and 7, there is shown another embodiment of the present utility model, wherein standing screw 10 is fixed in the operating type of template 20, be the double template 20(20 that is setting up) on the face (seeing also Fig. 6,7 and 8), comply with a determining deviation along same x wire, be drilled with perforation, screw rod 10 is penetrated template 20(20 one by one), and screw thread 12 is protruded outside the exterior sheathing 20, but each steel bar 50 clip clasp body 17 of horizontal stroke make screw rod 10 can not dally when being spirally connected solid lock, and the point of application of tool clip.This kind operating type can be saved a large amount of artificial, and single can the operation is as long as locking one fastener 16 can be fixed in screw rod 10 two template 20(20) between; Especially, during dismantling screw 10, as long as the fastener 16 that gets loose can pull out by clasp body 16 places, very easy in dismounting, need not to resemble and also slightly need beat the habitual screw rod, and the mistaken shortcoming of direction of extracting screw rod out.

(3) see also screw thread 12 parts shown in Figure 13, because the utility model screw thread 12 has the circular arc degree, no matter in tooth root or tooth peak part, do not have the dead angle more, the mud pellet or the rust grain that adhere to around here can be come off by the relative friction campaign of positive and negative screw thread.In addition, the cooperation of this kind pearl screw thread can have the moment of friction of relative motion that bigger gap and screw thread produce than other forms of moment for big.Therefore nut 14 can slide on the screw thread 12 easily, and known standing screw, its screw thread is V-type; the dead angle is big; receive thing easily, and the friction of the relative motion that produced of positive and negative screw thread diminishes because of sectional area in the moment of peak portion and root, mud pellet or rust grain are come off easily.As seen the utility model screw thread 12 makes improvements, and has practical effect really.

(4) see also Fig. 9,10 and 11, the utility model can be according to the needs of construction, on the bullet 18 of screw rod 10, a cylinder is set, when screw rod 10 breaks away from concrete wall 50, its two stomidiums hole is to be cylindrical hole 52, one lid 54 is this hole of sealing just, thereby the known original form of construction work of utilizing staff to fill hole is forgone, and is obviously quick and convenient in construction.

Claims

1, a kind of improved grouting template standing screw, it can be located between the template of two tools desire concrete placings slurry at regular intervals and by fastener and be fixed on the template, it is characterized in that: the bullet that on the screw rod body, is provided with predetermined length, have different external diameters by bullet two ends, screw rod can take out from the concrete wall that temporarily solidify quickly and easily when making the dismounting template.

2, improved grouting template standing screw as claimed in claim 1, it is characterized in that: can be according to the needs of construction, the clasp body that is provided with geometric form in the outer end of screw rod is for the steel bar clip that shuttles back and forth, the other end can have the screw thread that is spirally connected with nut, fastener, and peak portion of this screw thread (screw thread that comprises nut) and root are the oval or bent arc of circular arc.

3, improved grouting template standing screw as claimed in claim 1 is characterized in that: can screw rod epicone body two ends be designed to have short cylinder according to the needs of construction.

4, improved grouting template standing screw as claimed in claim 3 is characterized in that: screw rod is extracted the formed hole in back out from concrete wall, can insert lid.