CN201645622U - Positioning mechanism for positioning sleeve and device for molding concrete member pre-cast with sleeve - Google Patents
Positioning mechanism for positioning sleeve and device for molding concrete member pre-cast with sleeve Download PDFInfo
- Publication number
- CN201645622U CN201645622U CN2009202775343U CN200920277534U CN201645622U CN 201645622 U CN201645622 U CN 201645622U CN 2009202775343 U CN2009202775343 U CN 2009202775343U CN 200920277534 U CN200920277534 U CN 200920277534U CN 201645622 U CN201645622 U CN 201645622U
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- rivet
- reinforcing bar
- bed die
- concrete component
- keeper
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Abstract
The utility model provides a positioning mechanism for positioning a sleeve in a concrete member, wherein the concrete member is configured as follows: the pre-tensioning technology is utilized firstly for molding, and stretched steel bar is penetrated in when in molding. The positioning mechanism comprises a positioning piece and a connecting structure capable of disconnecting, wherein the positioning piece is used for installing the sleeve thereon, and the connecting structure is used for fixing the positioning piece on a bottom die of the concrete member, and is configured as follows: the connecting structure can be cut off by the shrinkage force of the steel bar when the stretched steel is released. The positioning mechanism also provides a device used for molding the concrete member pre-cast with a sleeve.
Description
Technical field
The utility model relates generally to the manufacturing of concrete component, relates to particularly built-in fitting especially sleeve pipe is positioned at detent mechanism in the prestressed concrete.The utility model also relates to the device that is used to make the concrete component that is embedded with sleeve pipe.
Background technology
Many concrete components need be embedded with built-in fitting.Typically, concrete sleeper, track plate and the frame plate that is used for railway and subway transportation all needs service sleeve.
Typical sleeve pipe location adopts the sleeve pipe bolt to pass bed die from track plate bed die below usually, and the service sleeve with the bed die top spins again.In the locating sleeve process, need screw the sleeve pipe bolt.Simultaneously, again must be earlier before the concrete component demoulding sleeve pipe bolt be being unscrewed below the bed die with its dismounting, make the trifling repetition of operation, cause production efficiency low.In addition, when installation and removal sleeve pipe bolt, it also can rub mutually with bed die preformed hole periphery, the reservation aperture of bed die is increased, along with increasing of number of applications, the positional precision of sleeve pipe is affected, even waste product can occur, otherwise rebuild bed die, but rebuild bed die method more complicated at present.
Installation at prior art repeats, inefficient shortcoming, a kind of casing location device that is used for the track plate discloses in Chinese patent 200710050763.7, it comprises the stepped locating shaft that passes on the track plate bed die, the lower end of locating shaft is passed track plate bed die and is fixed by nut, have on the locating shaft shaft part near plane on the track plate bed die and tighten structure, locating shaft is positioned on the shaft shoulder on this shaft part top and is socketed with the tensioner cover, and the upper end of locating shaft also is connected with carries out spacing clamp nut to the tensioner set upper side.Wherein, before molded track plate, sleeve pipe is installed on this positioner, and after the demoulding, only the track plate is taken out from the top, and this detent mechanism is not pulled down from bed die, being used for later repeated use, thereby improve production efficiency.But, put when needing these concrete components in molding process, to arrive predetermined strength and open because some concrete component (particularly concrete sleeper, track plate etc.) adopts first Zhang Gong's skill to make usually, so has prestressing force in these members.Because thereby the concrete component displacement causes tube displacement after putting, and the positioner of this patent still is fixed on the bed die this moment and be retained in the sleeve pipe, and this can bring serious damage to concrete component, sleeve pipe and/or bed die.Thus, this positioner is being very limited aspect the scope of application that is used for the moulded concrete member.In addition, this positioner is held in place in the fixed position of bed die and can't moves, and therefore very difficult change sleeve pipe is embedded in the position in the concrete component.
Summary of the invention
Therefore, task of the present utility model provide a kind of to bed die wearing and tearing little and be easy to mount and dismount sleeve pipe is positioned at detent mechanism in the concrete component.And a kind ofly be used for the molded device that is embedded with the concrete component of sleeve pipe.
A kind of detent mechanism that is used for sleeve pipe is positioned at concrete component, wherein, this concrete component is configured to plant molded and wherein be installed with when molded by the reinforcing bar of stretch-draw with first Zhang Gong, this detent mechanism comprise be used for this sleeve pipe dress thereon keeper and be used for this keeper is fixed on the syndeton that disconnects on the bed die of this concrete component, and this syndeton is configured to can be cut off by the convergent force of this reinforcing bar when this reinforcing bar by stretch-draw is released.
Preferably, described syndeton comprises rivet and the corresponding aperture that is arranged in the bed die.
A kind ofly be used for the molded device that is embedded with the concrete component of sleeve pipe, wherein, this concrete component is configured to plant molded and wherein be installed with when molded by the reinforcing bar of stretch-draw with first Zhang Gong, this device comprises the bed die that is used for thereon keeper of sleeve pipe dress, is used for molded this concrete component, be used for that this keeper is fixed on the syndeton that disconnects on the bed die of this concrete component and be used for fixing this concrete component by the mechanism of the reinforcing bar of stretch-draw, wherein, this syndeton is configured to can be cut off by the convergent force of this reinforcing bar when this reinforcing bar by stretch-draw is released.
Preferably, described syndeton comprises rivet and the corresponding aperture that is arranged in the bed die.
Preferably, this concrete component comprises frame plate.More preferably, this frame plate comprises 16 sleeve pipes.
Thus, the utility model detent mechanism and device have saved the repeated and difficult of bolt installation and removal, only promptly are easy to realize keeper is taken out from sleeve pipe by making that simply the syndeton that can break is cut off, and have significantly improved production efficiency.And the damage to bed die is compared with prior art much smaller, and has also obtained improvement for the positioning accuracy of sleeve pipe.
Description of drawings
Below, describe embodiment of the present utility model in conjunction with the accompanying drawings in detail, wherein:
The configuration that Fig. 1 illustrates sleeve pipe and fixes on bed die according to detent mechanism of the present utility model.
The specific embodiment
Term described herein " first Zhang Gong's skill " is a kind of method of molded prestressed concrete member, refers to stretch-draw steel on pedestal, and casting concrete is to form the construction method of prestressed concrete member then.Its operation comprises with predetermined stretching force comes tension reinforcing steel bar also the two ends of this reinforcing bar to be fixed on pedestal or the punching block with anchor clamps; Formwork, cast concrete; By the time after concrete component reaches predetermined strength, have this reinforcing bar contraction of prestressed reinforcing bar (promptly be called to put and open) thereby discharge, so that in concrete component, produce prestressing force.Especially, can adopt long-line pedestal method (also claiming long collimation method) with the first Zhang Gong concrete component of producing of planting, common long-line pedestal length is 50-150m.In first Zhang Gong's skill of long-line pedestal, along the length direction tension reinforcing steel bar of this long-line pedestal and be fixed in the two ends of pedestal, molded a plurality of concrete components simultaneously on pedestal then, and when these concrete components reach predetermined strength at one end or two ends or cut off reinforcing bar in the centre position of reinforcing bar so that these concrete components are put simultaneously opens.The concrete sleeper, track plate and the frame plate that are used for track traffic adopt first Zhang Gong's skill of long-line pedestal to carry out molded usually.
Any suitable part of the model that is used for the moulded concrete member planned to comprise in term used herein " bed die ", is not limited to be arranged in those moulds of concrete base.
Below, will describe preferred embodiment of the present utility model in detail.It will be appreciated by those skilled in the art that detailed description hereinafter only illustrates the utility model in the mode of example, rather than to restriction of the present utility model.
Now specifically detent mechanism of the present utility model is described with reference to figure 1.Figure 1 illustrates sleeve pipe and according to detent mechanism of the present utility model configuration of fix in position on bed die before the moulded concrete member of planting with first Zhang Gong.For clear, in Fig. 1 and not shown concrete and shown bed die 1 only be partial view, and do not plan to limit the shape and the structure of concrete component and bed die.Wherein, unshowned concrete component is to plant molded with first Zhang Gong.This detent mechanism comprises rivet 2 and keeper 3.As shown in the figure, keeper 3 is placed on certain position of bed die 1.Conical head rivet 2 passes on keeper 3 and the bed die 1 hole separately successively from the top, thereby and from the below tension this keeper 3 is fixed on this bed die 1.Sleeve pipe 4 is sleeved on the keeper 3 by interference fit.The shearing force that this conical head rivet 2 produces when being configured to be put by concrete component is cut off.Can expect sleeve pipe 4 being connected suitably with keeper 3 by other bindiny mechanism of sleeve pipe 4 and the corresponding bindiny mechanism of keeper 3.In a preferred embodiment, rivet and keeper are made into integration, and promptly form the configuration that the keeper lower end has stem.In use, only need this keeper can be fixed from the opposite side tension then in the hole in this stem insertion bed die 1.In addition, what can expect is, can provide other the syndeton that disconnects to be used for substituting the hole of rivet and bed die, connects such as binding agent, as long as this syndeton can be cut off when concrete component is put.
Describe to use in conjunction with this detent mechanism shown in Figure 1 sleeve pipe is positioned at method in the concrete component according to detent mechanism of the present utility model.In the method, concrete component for example is (but being not limited to) concrete sleeper, track plate or frame plate, or other need the concrete component of service sleeve.Described sleeve pipe is not limited to certain concrete casing-type, and plans to comprise any built-in fitting that is fit to be embedded in advance in the concrete component.Can select to bury underground the sleeve pipe of any suitable number, for example 16.
This method comprises the step of selecting suitable rivet.Particularly, can select the rivet of adequate types, material and size according to multiple factor, thereby make that described rivet can the effect of the convergent force of d/d reinforcing bar be cut off (as detailed description hereinafter) again when described rivet was enough to be positioned at sleeve pipe in the concrete in putting a process.
This method also is included in the step that forms the hole that is complementary with described rivet in the bed die.Can in bed die, form the hole with multiple manner known in the art, for example be drilled in drilling bore hole in the bed die with magnetic force.Those skilled in the art according to the position of wanting pre-buried sleeve pipe in the concrete component can selecting hole suitable position.In an embodiment who substitutes,, can in the process of making bed die, directly in bed die, form suitable hole if the position of service sleeve (or relative position) is to fix in the concrete.According to another alternate embodiment, when adopting this that sleeve pipe is fixed on the concrete component of the molded over and over again identical service sleeve of method in the concrete component, except that the first time, later each time can be with this step omission.
Next, described rivet is connected with keeper and passes hole in the bed die.What can expect is that secondly the order that rivet is connected with keeper with rivet passes the hole in the bed die can pass the hole for rivet at first is connected with keeper, perhaps secondly is connected with keeper at first passing the hole.Preferably, described rivet for example is connected with keeper and can be passed in corresponding aperture in the keeper for rivet.In an embodiment who substitutes, rivet is connected with keeper and comprises that rivet can be made into integration with keeper, thereby only the rivet bar in the member of this one need be passed the hole in the bed die.
Next step, thus make the fastening keeper fix in position on bed die that makes of rivet.The fastening method of rivet can adopt the known any suitable method of those skilled in the art.Preferably, strain rivet with hand riveter.Hand riveter can be a hand riveter electronic or manual or other form.It will be apparent to one skilled in the art that described keeper should be held in place on the bed die towards a side of wanting the moulded concrete member.Preferably, from bed die, strain rivet, thereby when pulling rivet, avoid being subjected to the influence of keeper with an opposite side of described keeper place side.
Then, can adopt any suitable manner that sleeve pipe is installed on this keeper.Mounting means can be the known methods of those skilled in the art, and for example includes but not limited to suitable connected mode that screw thread spins, interference fit is connected, keyway is connected and prior art is known etc. according to the sleeve pipe and the matching way of keeper.
Then, fix with predetermined at least one reinforcing bar of stretching force stretch-draw and with its two ends.Be understandable that, can select or calculate the stretching force of determining to be applied on the reinforcing bar according to multiple factors such as the size of concrete component, requirement of strength.Here described at least one reinforcing bar carried out stretch-draw, but self-evident be except can also being had the reinforcing bar of stretch-draw not by the reinforcing bar of stretch-draw, and these can not arranged by manner known in the art by the reinforcing bar of stretch-draw.
Then, cast concrete member in this bed die is wherein passed this concrete component by the described at least one reinforcing bar of stretch-draw.In one embodiment, plant molded a plurality of concrete components, therefore passed a plurality of concrete components by the reinforcing bar of stretch-draw with the first Zhang Gong of long-line pedestal.
Then, when this concrete component reaches predetermined strength, discharge by stretch-draw and the described at least one reinforcing bar that be fixed so that it shrinks, thereby and the convergent force of described at least one reinforcing bar act on described rivet and cause described rivet to be cut off.Being understandable that said release is meant here cuts off or cuts off described reinforcing bar, perhaps unclamps this reinforcing bar at the reinforcing bar place of being fixed.In order to make that rivet is easier to be cut off by the convergent force of reinforcing bar, preferably make reinforcing bar only disconnect or unclamp a position.If reinforcing bar disconnects more than a position, then the convergent force of the reinforcing bar between any two cut-off points has been balanced significantly in the centre position of this section reinforcing bar, thereby being positioned near these positions rivet, to be subjected to the shearing force that the reinforcing bar convergent force brings less, cuts constantly these rivets probably.Coming with long-line pedestal method among the embodiment of molded a plurality of concrete components, preferably near the centre position of pedestal, cut off by the reinforcing bar of stretch-draw, this has been avoided the disconnected or release excessive shortcoming of some concrete component displacement that reinforcing bar brought in an end-grain cutting of pedestal, and the convergent force of reinforcing bar still can all produce shear action to all rivets simultaneously.Although above-mentioned a plurality of step is similar to a plurality of steps in first Zhang Gong's skill, but cut off selected suitable rivet according to the shearing force of putting a generation in the method utilization Zhang Gong of the elder generation skill of the present utility model, thereby reduced the step that detent mechanism is removed, brought obvious improvement.
Ground as indicated above can be according to the rivet of multiple factor selection adequate types, material and size.For example, in a preferred embodiment, can be according to the stretching force of the described at least one reinforcing bar of stretch-draw and the definite prestressing force that will be applied to concrete component of number of reinforcing bar, determine the loss of stretching force then, thereby obtain to be applied to the threshold values of the shearing force on the rivet owing to the convergent force of reinforcing bar.And determine to want the intensity level of the required rivet of fixed sleeving.Thereby determine to be applicable to the strength range of the rivet of location, and select the rivet of adequate types, material and size according to this.Perhaps determine to be subjected to the threshold values at the minimum place of shearing force and the rivet that the required minimal intensity value of locating sleeve is selected adequate types, material and size by experiment.Only be that exemplarily how explanation selects suitable rivet more than people will understand, but can also determine suitable rivet according to multiple mode of not enumerating or factor.Be understandable that the type of suitable rivet includes but not limited to cup head, tack, sunk head rivet, self-plugging rivet and/or expansive rivet etc.In addition, rivet can be of different sizes and material.In one embodiment, select suitable rivet to comprise selecting to have diameter is 3.2mm, and length is the rivet of 17mm.According to further embodiment, the size in the hole in the bed die and the size of rivet are complementary, and for example the diameter in hole equals the diameter (diameter as the hole is 3.2mm, and the diameter of rivet is 3.2mm) of rivet.Yet in another alternate embodiment, rivet is an expansive rivet, and the diameter in hole is bigger slightly than the diameter of rivet.Although shown hole and rivet all present column, what can expect is the geometry that hole and rivet can present other, as long as the shape of hole and rivet is complementary.
Best illustration
Method of the present utility model and mechanism are exemplarily described below.In this example, prestressed concrete member is that urban construction design studies total institute in Beijing is the designed frame plates of No. two lines of Xi'an subway (northern passenger station is to prolonging the fort section).It has advantages such as vibration damping, noise reduction, later maintenance expense be low.This prestressed frame slab integral adopts the first Zhang Gong of long-line pedestal to plant and produces.Pre-buried 16 sleeve pipes in this frame plate.
In this frame plate process of production, at first on bed die 1, bore the hole of getting 16 diameter 3.2mm with magnetic force.Select the conical head rivet 2 of diameter 3.2mm, long 17mm subsequently for use, pass keeper 3 from the top, strain rivet 2 from the below to fix this keeper 3 with hand riveter then.Next sleeve pipe 4 is set on this keeper 3.Adopt the first Zhang Gong of long-line pedestal to plant molded a plurality of frame plates that are embedded with 16 sleeve pipes then.Wherein, many reinforcing bars by stretch-draw are fixed on the anchor clamps (not shown) at pedestal two ends.When building this a plurality of frame plate, these many reinforcing bars by stretch-draw pass this a plurality of frame plates.Treat that frame plate carries out form removal after arriving the hardness of regulation, and near the centre position of pedestal, cut off described many by the reinforcing bar of stretch-draw, make this frame plate put to open and these many shunk by the reinforcing bar of stretch-draw.The convergent force of many reinforcing bars acts on and has produced shearing force on these 16 rivets 2 and they are cut off.
In this example, saved conventional demounting bolt time, save man-hour, reduce operation easier, and guarantee the sleeve pipe perpendicularity simultaneously, guarantee the range accuracy between the sleeve pipe.
Adopt mechanism and the device of embodiment of the present utility model, be used for fixing rivet and be sheared power when opening and cut off putting, saved in the prior art step that need before form removal is put, unscrew fastening bolt; And when rivet is installed, only need hole and tension rivet that rivet passes in the bed die are simply got final product, save prior art and need screw the step of fastening bolt, thereby saved installation cost and time greatly.And in implementing the method for embodiment of the present utility model, to bed die little more than prior art, bed die has obtained the improved life-span when cutting off rivet.
More than describe the embodiment of method of the present utility model, mechanism and device in detail, give best illustration of the present utility model especially.Be understandable that above description is intended to illustrate the utility model, and does not plan scope and spirit of the present utility model are construed as limiting.Can make modification, exchange and be equal to the feature of each embodiment of the present utility model and do not deviate from the utility model.The utility model is limited by the accompanying Claim book.
Claims (10)
1. detent mechanism that is used for sleeve pipe is positioned at concrete component, it is characterized in that, this concrete component is configured to plant molded and wherein be installed with when molded by the reinforcing bar of stretch-draw with first Zhang Gong, this detent mechanism comprise be used for this sleeve pipe dress thereon keeper and be used for this keeper is fixed on the syndeton that disconnects on the bed die of this concrete component, and this syndeton is configured to can be cut off by the convergent force of this reinforcing bar when this reinforcing bar by stretch-draw is released.
2. detent mechanism according to claim 1 is characterized in that, described syndeton comprises rivet and the corresponding aperture that is arranged in the bed die.
3. detent mechanism according to claim 2 is characterized in that, described rivet has the length of diameter and the 17mm of 3.2mm.
4. detent mechanism according to claim 2 is characterized in that, described rivet and described keeper are made into integration.
5. one kind is used for the molded device that is embedded with the concrete component of sleeve pipe, it is characterized in that, this concrete component is configured to plant molded and wherein be installed with when molded by the reinforcing bar of stretch-draw with first Zhang Gong, this device comprises keeper, the bed die that is used for molded this concrete component, be used for this keeper is fixed on the syndeton that disconnects on the bed die of this concrete component, with be used for fixing this concrete component by the mechanism of the reinforcing bar of stretch-draw, wherein, sleeve pipe is installed on this keeper, and this syndeton is configured to can be cut off by the convergent force of this reinforcing bar when this reinforcing bar by stretch-draw is released.
6. device according to claim 5 is characterized in that, described syndeton comprises rivet and the corresponding aperture that is arranged in the bed die.
7. device according to claim 6 is characterized in that, described rivet has the length of diameter and the 17mm of 3.2mm.
8. device according to claim 6 is characterized in that, described rivet and described keeper are made into integration.
9. device according to claim 5 is characterized in that this concrete component comprises frame plate.
10. device according to claim 9 is characterized in that, described frame plate comprises 16 described sleeve pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202775343U CN201645622U (en) | 2009-12-18 | 2009-12-18 | Positioning mechanism for positioning sleeve and device for molding concrete member pre-cast with sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202775343U CN201645622U (en) | 2009-12-18 | 2009-12-18 | Positioning mechanism for positioning sleeve and device for molding concrete member pre-cast with sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN201645622U true CN201645622U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202775343U Expired - Lifetime CN201645622U (en) | 2009-12-18 | 2009-12-18 | Positioning mechanism for positioning sleeve and device for molding concrete member pre-cast with sleeve |
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| CN (1) | CN201645622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109514724A (en) * | 2018-12-05 | 2019-03-26 | 中建科技湖南有限公司 | A kind of prefabricated components production preburied positioning device |
-
2009
- 2009-12-18 CN CN2009202775343U patent/CN201645622U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109514724A (en) * | 2018-12-05 | 2019-03-26 | 中建科技湖南有限公司 | A kind of prefabricated components production preburied positioning device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |