CN209621336U - A kind of device for slip casting - Google Patents

Abstract

A kind of device for slip casting, it is used to carry out slip casting to the steel pipe of pipe canopy, it includes, pedestal for connecting with the steel pipe, the cover board connecting with the pedestal, the pedestal include two pieces of arc package pieces, the arc package piece is provided with flange and attachment lug, the cover board is bolted with the flange, and the cover board is provided with the first Grouting Pipe, the second Grouting Pipe and exhaust pipe, and first Grouting Pipe is removably connected with the extension for extending into the steel pipe.Device provided by the utility model for slip casting, structure is simple, and mounting and dismounting are convenient, the risk that air is retained when greatly reducing slip casting.

Description

A kind of device for slip casting

Technical field

The utility model relates to technical field of tunnel construction, in particular to a kind of device for slip casting.

Background technique

Pipe shed method, advance support structure when being construction of underground structure shallow buried covered excavation.Its essence is in the quasi- underground excavated On the buried camber line of the lining cutting arch ring in tunnel or Structural Engineering, drills in advance and install the biggish thick walled steel tube of moment of inertia, rise and face When advance support act on, prevent soil layer collapse and surface subsidence, with guarantee driving with subsequent support process safe operation.

Building is intensive, Inner city of heavy traffic is necessarily involved using cut and cover tunneling underground engineering and torn open A large amount of stratum pipe network and above ground structure are moved, it is on the one hand at high cost in this way, in addition also it is not unfavorable for very much environmental protection, therefore, pipe It is widely adopted in the canopy method boring construction method constructing tunnel important as one kind.

In pipe shed method, copper pipe would generally use floral tube, cement slurry can thus be injected into steel pipe, when passing through injection Apply certain pressure, be diffused slurries by the aperture on steel pipe, reaches and be linked to be one by cement slurry between Kong Yukong A entirety, plays the role of advance support

Existing slurry injection technique is easy to cause slurries diffusivity poor, slip casting is not since grouting pressure will not be too high Uniformly, sky phenomenon is slipped in layer of sand, further, since not being sealed processing to the aperture section of pipe canopy, therefore in slip casting knot Shu Hou, it may occur that slurry reflux phenomenon influences final construction quality so that slurries be caused to be unable to fully fill.

Chinese patent CN207620807U provides a kind of single steel pipe grouting slip casting lid of tunneltron canopy construction, can protect The maintenance problem of overpressure when hindering single steel pipe slip casting, but it can only then be difficult to from steel pipe oral area slip casting when steel pipe is deeper Ensure that slurries can reach steel pipe bosom, on the other hand, casing can not then ensure in pipe as being only socketed on steel pipe There are biggish pressure, and it is if it is being connected through a screw thread with steel pipe, then must control the time removed, otherwise in cement Completely after solidification, more difficulty is removed just in rotation, moreover, the technical solution is such as used, then different steel pipes must be prepared Different kits, therefore, versatility is poor.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of devices for slip casting, front institute is reduced or avoided The problem of mentioning.

In order to solve the above technical problems, being used for the utility model proposes a kind of device for slip casting to pipe canopy Steel pipe carries out slip casting comprising, the pedestal for being connect with the steel pipe, the cover board being connect with the pedestal, the pedestal packet Two pieces of arc package pieces are included, the arc package piece is provided with flange and attachment lug, and the cover board and the flange pass through spiral shell It tethers and connects, the cover board is provided with the first Grouting Pipe, the second Grouting Pipe and exhaust pipe, and first Grouting Pipe is removably connected with Extension for extending into the steel pipe.

Preferably, the length of the extension is the 1/2 to 2/3 of the length of steel pipe.

Preferably, the extension is made of PVC material.

Preferably, the extension and first Grouting Pipe pass through interference fit connection.

Preferably, the extension is connected through a screw thread with first Grouting Pipe.

Preferably, an elastic sealing ring is provided between the cover board and the steel pipe.

Preferably, the elastic sealing ring is made of rubber material.

Device provided by the utility model for slip casting, structure is simple, and mounting and dismounting are convenient, greatly reduces slip casting When air retain risk.

Detailed description of the invention

Following drawings are only intended to schematically illustrate and explain the present invention, does not limit the model of the utility model It encloses.Wherein,

Fig. 1 is the dimensional decomposition structure according to a kind of device for slip casting of a specific embodiment of the utility model Schematic illustration.

Specific embodiment

For a clearer understanding of the technical features, objectives and effects of the utility model, now compareing Detailed description of the invention Specific embodiment of the present utility model.Wherein, identical component uses identical label.

Fig. 1 is the dimensional decomposition structure according to a kind of device for slip casting of a specific embodiment of the utility model Schematic illustration.Shown in Figure 1, the utility model provides a kind of device for slip casting, is used for the steel pipe to pipe canopy (not regarding out in figure) carries out slip casting comprising, the pedestal 1 for being connect with the steel pipe, the cover board 2 being connect with the pedestal 1, The pedestal 1 includes two pieces of arc package pieces 11, and the arc package piece 11 is provided with flange 12 and attachment lug 13, the cover board 2 are bolted with the flange 12, and the cover board 2 is provided with the first Grouting Pipe 21, the second Grouting Pipe 22 and exhaust pipe 23, first Grouting Pipe 21 is removably connected with the extension 3 for extending into the steel pipe 1.

The working principle of device provided by the utility model for slip casting is first to sandwich two pieces of arc package pieces 11 On the steel pipe, then the arc package piece 11 is stably connected with by the attachment lug 13 with the steel pipe, forms institute Pedestal 1 is stated, and makes the flange 12 without departing from the steel pipe edge, since the pedestal 1 is by two pieces of arc package pieces 11 are composed, therefore are suitable for the use of the steel pipe of most of caliber, to have good versatility.

The extension 3 is protruded into the steel pipe later, the effect of the extension 3 be the slurries that enable to pour into as far as possible The steel pipe depths is arrived at, the length of the extension 3 can be set to the 1/2 to 2/3 of the length of steel pipe, the extension 3, which can be used PVC material, is made, and metal structure can also be used certainly and be made, and after grouting, the extension 3 does not need to take Out, it is integrated with steel pipe consolidation.

The extension 3 is fixedly connected with first Grouting Pipe 21 later (such as can be and connected by interference fit Connect, be also possible to be connected through a screw thread), the position of the cover board 2 is adjusted, first Grouting Pipe 21 and second slip casting are made The cover board 2 above, is then fixedly connected by pipe 22 in lower section, the exhaust pipe 23 by bolt with the flange 12. Because the flange 12 is without departing from the steel pipe edge, upon connection, the cover board 2 can be with the steel pipe side Edge fits closely to ensure the leakproofness of connection.

Certainly, in order to enable better tightness is protected, can also be arranged between the cover board 2 and the steel pipe One elastic sealing ring 4, the elastic sealing ring 4 can be made of rubber material or resin material, when use rubber material When being made, preferably due to its elasticity, it can be easier to assemble in conjunction with the steel pipe of different tube diameters.

Grouting equipment (not depending on out in figure) and first Grouting Pipe 21 for being connected with the extension 3 can be connected later It connects, starts to the steel duct slip casting, at this point, second Grouting Pipe 22 and the exhaust pipe 23 are openable, the row of playing Gas effect.

When slurries be injected more than design injection rate more than half when, can stop from 21 slip casting of the first Grouting Pipe, closing Grouting equipment is connect by first Grouting Pipe 21 with second Grouting Pipe 22, is started from 22 slip casting of the second Grouting Pipe, When slurries are flowed out from the exhaust pipe 23, the exhaust pipe 23 is closed, continues slip casting, until the slurries in the steel pipe reach Design pressure and time.Stop slip casting later, separate grouting equipment, closes second Grouting Pipe 22.

After grout curing in the steel pipe is to some strength, bolt is disassembled, the cover board 2 is taken from the pedestal 1 Under, in the process, such as described extension 3 with first Grouting Pipe 21 is connected by interference fit, then can be directly by institute Cover board 2 is stated to pull up, such as the extension 3 and first Grouting Pipe 21 are to be connected through a screw thread, then the rotatable cover board 2, To make the extension 3 be disconnected with first Grouting Pipe 21.

Finally, removing bolt, the arc package piece 11 is removed, completes the slip casting to the steel pipe.

The enclosed construction of first Grouting Pipe 21, second Grouting Pipe 22 and the exhaust pipe 23 can be used existing Technology, referring for example to the snap closure used in Chinese patent CN207620807U, because not being the main of the utility model Innovative point, therefore repeat no more.

The utility model is technical solution basis provided by the Chinese patent CN207620807U that refers in background technique The improvement of upper progress, by designing separable pedestal 1 and cover board 2, so that the slurries that whole device will not be cured connect It connects on the steel pipe, in addition, from the slip casting of steel pipe depths elder generation, thus greatly reducing steel pipe depths sky by setting extension 3 The risk of gas siltation.

Device provided by the utility model for slip casting, structure is simple, and mounting and dismounting are convenient, and versatility is good, significantly The risk that air is retained when reducing slip casting.

It will be appreciated by those skilled in the art that although the utility model is described in the way of multiple embodiments , but not each embodiment only contains an independent technical solution.So narration is in specification just for the sake of clear For the sake of, the skilled in the art should refer to the specification as a whole is understood, and by skill involved in each embodiment Art scheme, which is regarded as, can be combined with each other into the modes of different embodiments to understand the protection scope of the utility model.

The above descriptions are merely exemplary embodiments of the present utility model, the model being not intended to limit the utility model It encloses.Any those skilled in the art, under the premise of not departing from the conceptions and principles of the utility model made equivalent variations, Modification and combination, should belong to the range of the utility model protection.

Claims (7)

1. a kind of device for slip casting, be used to carry out slip casting to the steel pipe of pipe canopy, which is characterized in that it includes, for The pedestal of the steel pipe connection, the cover board connecting with the pedestal, the pedestal include two pieces of arc package pieces, the arc package piece It is provided with flange and attachment lug, the cover board is bolted with the flange, and the cover board is provided with the first note Slurry pipe, the second Grouting Pipe and exhaust pipe, first Grouting Pipe are removably connected with the extension for extending into the steel pipe Pipe.

2. the device according to claim 1 for slip casting, which is characterized in that the length of the extension is the steel pipe The 1/2 to 2/3 of length.

3. the device according to claim 1 for slip casting, which is characterized in that the extension is made of PVC material.

4. the device according to claim 1 for slip casting, which is characterized in that the extension and first Grouting Pipe It is connected by interference fit.

5. the device according to claim 1 for slip casting, which is characterized in that the extension and first Grouting Pipe It is connected through a screw thread.

6. the device according to claim 1 for slip casting, which is characterized in that be arranged between the cover board and the steel pipe There is an elastic sealing ring.

7. the device according to claim 6 for slip casting, which is characterized in that the elastic sealing ring is by rubber material system At.