CN1130232A - Mechanical connection for reinforcing bars - Google Patents
Mechanical connection for reinforcing bars Download PDFInfo
- Publication number
- CN1130232A CN1130232A CN 95100862 CN95100862A CN1130232A CN 1130232 A CN1130232 A CN 1130232A CN 95100862 CN95100862 CN 95100862 CN 95100862 A CN95100862 A CN 95100862A CN 1130232 A CN1130232 A CN 1130232A
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- CN
- China
- Prior art keywords
- reinforcing bar
- sleeve pipe
- connecting device
- mechanical connecting
- screw thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Mutual Connection Of Rods And Tubes (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The present invention relates to a kind of mechanical jointing device for reinforcing bars, a component for installing said device and a process for installing said device. The characteristic of said device lies in that there are hollow cylinderical casing pipes to which the ends of unjointed steel bars can be led in, there is thread on casing pipe end portion, the hollow body and thread are coaxial ones to make two steel bars joint end end, the material outside the casing pipe is deformed by linear or helix recess construction, the rib material of the steel bar is inserted in the hollow body of the casing pipe to connect the steel bar and the casing pipe. Said device is used in the concrete building construction.
Description
The present invention relates to a kind of mechanical connecting device that is used for reinforcing bar.It relates to a kind of mechanical connecting device that is used for reinforcing bar, i.e. the sleeve pipe of a hollow body and parts of settling this mechanical connecting device.The invention still further relates to an installation and be used for the process of the mechanical connecting device of reinforcing bar.
This device is used in concrete building structures, for example connects in urban architecture, harbour construction or road building.
The known continuous transmission that can guarantee tensile stress at these occasions use mechanical connecting device connecting reinforcements.
Mechanical connecting device of the present invention can use in the building site, so that the member (prefabricated component) through industrial processes is connected with the reinforcing bar that other uses on-site in the workshop.
These reinforcing bars that use on-site can have a straight or bent back ends, and have rib or screw thread with existing form at its external surface.The not corresponding regulation of the size of rib or screw thread, but proportional with the diameter of reinforcing bar.All these members are given certain bonding strength when design, and still uses minor diameter and little rib according to the structures shape reinforcing bar that uses with major diameter and big rib.
These ribs are usually for example with the external surface of helical configuration at reinforcing bar, and its pitch depends on the diameter of used reinforcing bar and required intensity.
Sometimes, must couple together the reinforcing bar and the new reinforcing bar that are embedded in original concrete block to extend or to change structure.
In many situations, the reinforcing bar that uses on the building site is designed to not have mechanical connecting structure such as screw thread to connect with convenient at the scene, on the other hand, or has one to be corroded or screw thread that seawater destroys.
Any machining of reinforcing bar end must be finished in a special workshop.This process operation can cause interruption and bring sizable loading and unloading problem at the reinforcing production line.The interruption of this load is very expensive, and also can often bring the transportation problem of the steel that becomes hundred tons being delivered to work-yard and/or assembling point from the machining building site.
The objective of the invention is and to merge to this operation of mounting sleeve in the production process and needn't deal with end reinforced in advance.
Be known that at present to clamp and connect this class reinforcing bar with the tubular sleeve depended on pressure.For this purpose, because it is powerful to have to the encirclement jaw system of an outer pressure operation, just must use some huge outer pawls.And huge a shortcoming arranged, promptly when steel and reinforcing bar high concentration, if two reinforcing bars lean on too closely, quick insertion on-site just can not.
Asymmetric and irregular in view of used reinforcing bar, two reinforcing bars no longer align, and also make two reinforcing bars to be connected produce almost certain deviation with the known devices with a movable pawl and the vertical clamping of fixed die.
The purpose of this invention is to provide a kind of energy and reduce the mechanical connecting device that is used for reinforcing bar of above-mentioned shortcoming, and can connect the terminal reinforcing bar that does not have coupling part such as screw thread.Do not have screw thread may be since the corrosion the result or simply be the result that mechanical connecting device is not provided during fabrication, also might be in the building site since accident mechanical connecting device is fractureed.
Another purpose that is used for the mechanical connecting device of reinforcing bar proposed by the invention is to operate and to use light and handy, instrument easily on-site fast.
Another purpose that is used for the mechanical connecting device of reinforcing bar proposed by the invention is: owing to used undersized instrument, just can use highdensity reinforcing bar, promptly can lean on very closely between the reinforcing bar.
Another purpose that is used for the mechanical connecting device of reinforcing bar proposed by the invention is can test by applying 90% the stress that for example equals elastic limit after connection.
Another purpose that is used for the mechanical connecting device of reinforcing bar proposed by the invention is can provide to produce to use test connecting apparatus, makes that the linkage of production is reliable fully from the viewpoint of sleeve pipe to the quality of the end clamping of reinforcing bar.
Another advantage of the mechanical connecting device that is used for reinforcing bar that the present invention proposes is: clamp the quality that connects by checking, just can significantly reduce the length of sleeve pipe itself, owing to significantly reduced used amount of metal, make that the cost of mechanical connecting device reduces greatly in the structure.
A further object of the present invention is to operate fast on-site, so that coupling together with other reinforcing bar that uses on-site at the good member that stretches out a part of reinforcing bar (prefabricated component) of plant produced.
That is: all horizontal plate can process simultaneously in factory, are connected with the vertical reinforcing bar of in advance its end all being adjusted to equal height subsequently.
Another advantage of parts of the present invention is: it uses very convenient, simple on-site.
These parts have the function of the ability of the work that test just finished with the proof linkage.Owing to can't check the quality of the connection that clamp to produce with pawl up to now, that yes is very favourable for it.
Another advantage of parts of the present invention is to increase number of connection considerably, rises to 400 of every days from 40 of present every days.These parts can be installed so that the preparation industrialization of reinforcing bar with fixed form.
The mechanical connecting device that is used for reinforcing bar that the present invention proposes is connected with the straight shape of the reinforcing bar that rib is arranged at external surface or curved end with the inner contact in the concrete component structure on-site, it is characterized in that it comprises:
The sleeve pipe of a hollow cylinder does not have the reinforcing bar end of coupling part can import to its inside;
End at sleeve pipe has screw thread;
Hollow body and screw thread coaxial line make two tails can couple together to the reinforcing bar of tail configuration;
The outer flooring of sleeve pipe is out of shape because of straight line or spiral groove structure;
The material of reinforcing rib can be embedded into the hollow body of sleeve pipe, makes reinforcing bar be connected with sleeve pipe.
Can learn from following explanation and accompanying drawing: the present invention not only is confined to an embodiment.
Fig. 1 represents that the mechanical connecting device that is used for reinforcing bar of the present invention is used in the situation of the horizontal reinforcement of a vertical reinforcing bar and a bending;
Fig. 2 is the schematic diagram of apparatus of the present invention of the mechanical connection of reinforcing bar and the end reinforcing bar that do not have the coupling part;
Fig. 3 is the sectional drawing of shape after the expression casing deformation;
Fig. 4 shows a kind of modification of instrument, and it replaces biasing ring among Fig. 2 with ball.
With reference to Fig. 1, the mechanical connecting device that is used for the reinforcing bar connection is represented with numeral 1.The people of well-known processes knows, is extensive use of this reinforcing bar with reinforcement on present building site.Reinforcing bar 2 is connected with the reinforcing bar 3 of reinforcing bar 2 tails to tail and coaxial line configuration with another root.Thereby linkage 1 can guarantee that the tensile stress between reinforcing bar 2 and the reinforcing bar 3 transmits continuously.
Fig. 1 shows single steel bar 3, but the part on the horizontal floor 4 that it just is made up of with the reinforcing bar that is parallel shape basically and arranges numerous reinforcing bars.Each root reinforcing bar 3 is 4 linearly extensions from the floor, or a crooked afterbody 5 is as shown in Figure 1 arranged on the contrary.
The mechanical connecting device that is used for reinforcing bar that the present invention proposes also can be used on other and is applicable to that some has the device of the building of outer/outer tube or interior/inner sleeve.
Structure also comprises a vertical component, and the reinforcing bar 2 that a row is arranged in parallel forms one therein.The end 6 of reinforcing bar 3 must be connected with the end 7 of reinforcing bar 2.It should be noted that the end 7 of this reinforcing bar does not have the coupling part, does not for example have screw thread or joint.And for the people who is proficient in technology, producing this mechanical connecting device is easily.
Know do not have screw thread may be owing to the reason of design, also may be corrosion or the cause that amputates on-site.
In a single day mechanical connecting device 1 of the present invention is connected as a single entity with the afterbody 7 of method of the present invention and reinforcing bar, just can be connected with reinforcing bar 3 by for example tighten the screws.Used system is " nipple " class (3 part), and reinforcing bar can not rotate.
Fig. 2 shows its afterbody 7 does not have the coupling part to connect the reinforcing bar 2 of screw thread promptly.Reinforcing bar with suitable diameter has rib 10 with for example circle or helical configuration at its external surface.These ribs may not have rule, but can alleviate the supporting of reinforcing bar in the concrete when they are subjected to big stress in known manner.These ribs have different in width and the height dimension that is suitable for bar diameter.
Consider the form of structure, the diameter of reinforcing bar is not very regular, and these ribs neither very accurately be distributed in the external surface of reinforcing bar.
The mechanical connecting device that is used for reinforcing bar that the present invention proposes comprises the sleeve pipe 11 of a hollow cylinder, and the end 7 of reinforcing bar enters its inside by the mouth of pipe 12.
In one embodiment, sleeve pipe 11 not only has a cylinder on the major part of its height, also have a chamfered portion 13.On inclined-plane 13, there is screw thread 8 as shown in Figure 1 the end of sleeve pipe 11.
The mechanical connecting device that is used for reinforcing bar is by forming on the no screw thread tail end 7 that the cylindrical casing 11 that contains screw thread 8 is installed in reinforcing bar 2.It should be noted that reinforcing bar 2 is along the configuration of axis 14 coaxial lines so that reinforcing bar 2 is connected tail with 3 tails with screw thread 8.
It is also noted that reinforcing bar must align and coaxial line well with reinforcing bar, because, test the moment that adverse effect is arranged with " permanent extension rate " test or slip thereby produce a tension force to reinforcing bar if the bottom surface does not have alignment will not cause bias stress.
Because with threaded rod and casing joint to be clamped and the cause of coaxial line clamping action, and with the cause of ring tool, process proposed by the invention is more reliable for the centering of two reinforcing bars, and has nothing to do with the reinforcing bar shape among the present invention.
The parts of various mechanical connecting devices are normally made by metal, and it helps selecting the material of sleeve pipe 11.Sleeve pipe 11 will be by the ductile bigger than the material of forming reinforcing bar 2, and when acting on the external surface of sleeve pipe 11 with convenient pressure, rib 10 imbeds the inside of sleeve pipe 11.This embeddeding action is at reinforcing bar afterbody 7, thereby, sleeve pipe being pressed on the tail end of reinforcing bar, it is normally finished through vertical and/or annulus displacement by the instrument that is numbered 23.
The material of reinforcing rib imbeds the inside of the sleeve pipe relative with reinforcing bar, makes reinforcing bar link to each other with sleeve pipe.
Be used to settle the parts 15 of mechanical connecting device 1 to see Fig. 2.
These parts are equipped with a screw thread extension 16, and it is included in the screw thread 17 of one of its end end and the joint 30 of a screw thread 8 that can be screwed into linkage 1.
The screw thread 17 of extension is arranged in the end 18 of employed hollow actuator cylinder bodies that can be two moving.The body 19 of this actuator cylinder forms 20, one hollow pistons 21 in a zone with extension 16 and can move in this zone.The end 22 of this piston forms an integral body with instrument 23, and this instrument can have different suitable shape such as circle, and some biasing ring or balls promptly are housed.In some cases, these parts can be according to bar diameter size adjusting to be connected.The clamping of linkage can be adjusted by the quantity of change ball, and can produce a circular motion and clamp to reach with helix.
Obtain one in order to improve surface contact and better connect, it is effective with 5 to the 10 second time of needs temperature being risen to 500 to 750 ℃ heating system.A high frequency self-induction system can guarantee the spot heating of small size part.With little low frequency portable appliance, in seconds just can finish Fast Heating and temperature is risen.
Metal cools after the connection has a significant advantage.Because strengthening, the contraction of thermal stress clamps, thereby, between reinforcing bar and sleeve pipe, produce one and well conformed to a power and whole completely a connection.
Much lower clamping force can be produced by self-induction heating inner contact, and less instrument can be used.
Reinforcing bar that it should be noted that 40 diameters need be with 60 tons of pressure of 4 balls, and the reinforcing bar of one 40 diameter needs 15 tons thermal pressure with a circular tool 23.
Owing to had with the whole connecting reinforcement and the reliable linkage controlled of coupled modes, clamp reinforcing bar and compare with the coupling device of usefulness is for example vertical, just can reduce coupling length considerably.
Fig. 4 shows the details of the instrument 23 that ball is housed.Ball produces distortion 27 in the exterior portion of sleeve pipe 11.Between the vertical decrement phase of instrument, produce vertically and/or annulus clamps, with the external surface interlock of sleeve pipe, thereby produce controllable embedding, and also available ball regulate.This screw thread 28 of regulating in the available diagram is realized.
If form the tipper on a half cycle limit in the outside of the annulus of instrument, the clamping of ball is exactly spiral helicine.When exerting pressure, mounting points forces its to rotate, and instrument is installed on the thrust ball bearing, and the angle of groove depends on the function of pitch or screw pitch and relevant at interval with the bolt of reinforcing bar.
This purpose is in order to increase groove length considerably, and is embedded into the hollow body of sleeve pipe well.Thereby on mechanical component, produce the effect that conforms to of reinforcing bar again.
The outer flooring of sleeve pipe is out of shape because of straight line or helix form of grooves.
When piston descended with arrow F direction, a distance D was vertically moved in the end of instrument 23.The base portion 24 of instrument 23 pins down part 25 and contacts with one, and this pins down part itself and is placed in a band and inserts pining down on the plate 26 of nylon washer.
By the sizable pressure that is transmitted by piston, instrument 23 at first acts on the inclined-plane 13, acts on subsequently on all neighborings of sleeve pipe 11.Be exactly the distortion against this pressure and produced simultaneously sleeve pipe periphery, as shown in Figure 3, end reinforced 7 are connected with sleeve pipe.Instrument forms screw thread 27 with enough quantity in the exterior portion of sleeve pipe, preferably is distributed in regularly on all outer peripheral faces.Certainly, the quantity of this screw thread depends on the diameter of reinforcing bar to be connected.
When the vertical and/or annulus displacement D of instrument, the instrument depended on pressure extrudes screw thread in the neighboring of sleeve pipe, and has produced the embedding at end reinforced 7 rib 10.Certainly, against selecting the ductility material bigger to form sleeve pipe 11, just may produce this embedding than end reinforced 7 material.
Use the method, sleeve pipe can be connected with the end of reinforcing bar and clamp.The material sleeve of end reinforced 7 rib in the inside of sleeve pipe to form joint face.
With reference to Fig. 2, can see, when oil transmits under pressure, promptly by piston 21 functional units 15.The sleeve pipe 11 that lumps together with extension 16 installs on the power cylinder body.Like this, cause that hollow piston dropping distance D and generation clamp.Rib 10 at the reinforcing bar external surface is embedded into the material that inside pipe casing has big ductility.
During EO, the end face 24 of instrument is bearing in to pin down on the part and in predetermined value and for example tests at 99% place of the elastic limit of reinforcing bar.When applying tensile stress, if do not observe the oil pressure decline slip record of reading from the pressure meter of actuator cylinder, then this test is considered to well.
Claims (8)
1. the mechanical connecting device that is used for reinforcing bar is used for the structure inner contact of concrete component on-site, is used in straight line or crooked end that its external surface has the reinforcing bar of rib, it is characterized in that it comprises:
The sleeve pipe of a hollow cylinder (11) does not have the end reinforced the inside that imports this sleeve pipe of coupling part;
Screw thread (8) in sleeve pipe (11) end;
Hollow body and screw thread coaxial line make two tails can couple together to the reinforcing bar of tail configuration;
The material of cover tube outside is out of shape because of straight line or helix groove structure;
The material of the rib of reinforcing bar (10) embeds in the hollow body of sleeve pipe (11), so that connecting reinforcement and sleeve pipe.
2. the mechanical connecting device that is used for reinforcing bar as claimed in claim 1 is characterized in that,
Between screw thread and sleeve pipe column part, the external surface of sleeve pipe (11) forms inclined-plane (13).
3. being used for its tail end does not have the parts of the reinforcing steel bar machinery linkage of coupling part, and two reinforcing bar tails are connected tail, it is characterized in that it comprises:
A double acting power oil cylinder body (19);
Be installed in the power cylinder body with the joint of the threaded engagement of cannula tip or the extension (16) of screw thread;
The hollow piston of power cylinder (21) moves between cylinder body (19) and extension (16);
The instrument (23) that be in pistons end, ball or ring is housed can vertically move and/or rotate, so that the outside material deformation of sleeve pipe (11), and forces the rib (10) of reinforcing bar to embed the inside of sleeve pipe, to form being connected and clamping of sleeve pipe and reinforcing bar end.
4. the parts of arrangement mechanical connecting device as claimed in claim 3 is characterized in that it comprises:
One pins down part (25), is used for the bottom surface of support tool between the last decrement phase of actuator cylinder, connects with test.
5. the process that is used for the mechanical connecting device of reinforcing bar as claimed in claim 1 is installed, it is characterized in that it comprises:
With the afterbody of a casing pipe sleeve at the reinforcing bar that does not have the coupling part;
By the sleeve pipe on the vertical and/or circumferential displacement roof pressure reinforcing bar afterbody of an instrument;
Selection is than the more malleable shell material of reinforcing bar material, so that the rib of reinforcing bar embeds sleeve pipe hollow body inside;
The stress of getting back to reinforcing bar is led in transmission by instrument.
6. the process that is used for the mechanical connecting device of reinforcing bar as claimed in claim 5 is installed, it is characterized in that,
Finish in case connect, promptly test at for example predetermined reinforcing bar elastic limit value place.
7. the process that is used for the mechanical connecting device of reinforcing bar as claimed in claim 5 is installed, it is characterized in that,
Better connect in order to improve contact surface and to obtain one, the end of muscle is heated to 500 to 750 ℃ temperature with 5 to 10 second time, cooling subsequently is so that clamping is shunk, strengthened in assembling.
8. the parts of installation mechanical connecting device as claimed in claim 3 is characterized in that,
Produce heating with the high frequency self-induction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95100862 CN1130232A (en) | 1995-03-01 | 1995-03-01 | Mechanical connection for reinforcing bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95100862 CN1130232A (en) | 1995-03-01 | 1995-03-01 | Mechanical connection for reinforcing bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1130232A true CN1130232A (en) | 1996-09-04 |
Family
ID=5073650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95100862 Pending CN1130232A (en) | 1995-03-01 | 1995-03-01 | Mechanical connection for reinforcing bars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1130232A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101099012B (en) * | 2004-10-28 | 2011-06-08 | 建屋发展局 | A connecting arrangement for connecting reinforcement bars |
| CN102861829A (en) * | 2012-08-21 | 2013-01-09 | 沈阳黎明航空发动机(集团)有限责任公司 | Conduit closing-in clamp and closing-in method |
| CN103836057A (en) * | 2014-02-25 | 2014-06-04 | 王迎军 | Flexible shaft transmission device of vibrating concrete leveling bar |
-
1995
- 1995-03-01 CN CN 95100862 patent/CN1130232A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101099012B (en) * | 2004-10-28 | 2011-06-08 | 建屋发展局 | A connecting arrangement for connecting reinforcement bars |
| CN102861829A (en) * | 2012-08-21 | 2013-01-09 | 沈阳黎明航空发动机(集团)有限责任公司 | Conduit closing-in clamp and closing-in method |
| CN102861829B (en) * | 2012-08-21 | 2015-01-07 | 沈阳黎明航空发动机(集团)有限责任公司 | Conduit closing-in clamp and closing-in method |
| CN103836057A (en) * | 2014-02-25 | 2014-06-04 | 王迎军 | Flexible shaft transmission device of vibrating concrete leveling bar |
| CN103836057B (en) * | 2014-02-25 | 2016-06-29 | 王迎军 | A kind of concrete shakes leveling ruler flexible shaft transmission device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |