CN201292528Y

CN201292528Y - Grouting machine

Info

Publication number: CN201292528Y
Application number: CNU200820159684XU
Authority: CN
Inventors: 张叶锋
Original assignee: Nanjing Construction Group Co Ltd
Current assignee: Nanjing Construction Group Co Ltd
Priority date: 2008-11-06
Filing date: 2008-11-06
Publication date: 2009-08-19
Anticipated expiration: 2018-11-06

Abstract

The utility model discloses a grout injecting device which comprises one or more black pipes with holes uniformly arranged on the cylindrical surface, a one-way valve which is arranged on one end of each black pipe and can prevent grout from inwards flowing, the black pipes are hermetically connected with each other, and the outer side of each black pipe is coated with an injected hole protecting cover which can resist a certain external force. The grout injecting device can be made of a steel pipe or high-intensity PVC pipe. The utility model has simple structure and certain rigidity. When a reinforcing cage is completely downwards placed, a grout injecting pipe is pressed into a pile bottom sediment and loosened soil part by adopting a vibrating electric hammer, the grout injecting device is provided with an injected hole protecting device to ensure the grout injecting pipe to be unobstructed, and a high-pressure pump injects grout to the soil body under the pile bottom through the grout injecting device during grout injection. In addition, the end head of the grout injecting device is provided with a one-way valve, the grout is directly injected into the soil layer by a pile body grout injecting pipe through the one-way valve to ensure that the grout can only flow out but not flow in, and the first success ratio of grout injection reaches 99 percent, thereby the utility model greatly enhances the grout injecting effect.

Description

A kind of slurry casting machine

Technical field

The utility model relates to a kind of construction implement, relates to a kind of efficient slurry casting machine that is used for grouting behind shaft or drift lining specifically.

Background technology

Pile bottom post-grouting technology was once brought into use in some soft foundation areas such as Shanghai the earliest, in order to reinforce stake end loosened soil, increase bearing area, increase reverse prestressing force, improve the bearing capacity of bored pile, the settling amount of minimizing bored pile, and influence this elder generation's boring post grouting process key of success is slurry casting machine, the slurry casting machine that existing grouting behind shaft or drift lining is used is to make according to the actual conditions of each engineering, construct simple and easy, sealing is poor, be prone to fault during use, make construction be difficult to implement, prolong the duration, increase construction costs according to expection.

The utility model content

In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of slurry casting machine, and good airproof performance can not have clogging, improves slip casting effect.

The utility model is achieved through the following technical solutions: slurry casting machine; it is characterized in that; comprise the black pipe of even perforate on one or more faces of cylinder and be installed in the one way valve that black pipe one end can prevent stream in the slurries; be tightly connected between each black pipe; the black pipe outside coats one deck protective cover, can put forward anti-certain external force.

Aforementioned slurry casting machine is characterized in that closely connecting in conjunction with sealing glue by screw thread between each black pipe, and the black pipe outside seals with rubber sleeve.

Aforementioned slurry casting machine is characterized in that material can be steel pipe or high-strength PVC pipe.

The beneficial effects of the utility model are: slurry casting machine is the vitals of whole pile bottom pressure grouting construction technology; the utility model slurry casting machine termination is provided with one way valve; simple in structure; certain rigidity is arranged; transfer when reinforcing cage and to adopt the vibrations electric hammer that Grouting Pipe is pressed into pile bottom sediment and loosened soil portion after finishing; the injected hole protective device is set on the slurry casting machine; guaranteed the unobstructed of grouting pipeline; during slip casting; carry out slip casting with high-pressure pump by slurry casting machine of the present utility model following soil body at the bottom of stake, slurries directly inject soil layer by the pile body grouting pipe through one way valve, thereby guarantee that slurries can only outflow to come in; the slip casting once success rate reaches 99%, has improved slip casting effect greatly.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the utility model scheme of installation;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is the enlarged drawing of A part among Fig. 3.

The specific embodiment

Below in conjunction with accompanying drawing, describe the specific embodiment of the present utility model in detail:

As shown in Figure 1, slurry casting machine 1, material can be steel pipe or high-strength PVC pipe, by the even black pipe 3 of perforate 2 and be installed in black pipe one end on one or more faces of cylinder, can prevent that the one way valve 4 of stream in the slurries from forming, use sealing glue between each black pipe when being threaded, and firmly tighten, guarantee sealing, anti-certain external force can be put forward with the rubber sleeve sealing in the black pipe outside.

As shown in Figure 2, slurry casting machine 1 is welded on the Grouting Pipe 5, and slurry casting machine exceeds about reinforcing cage 6 bottom 0.5m, and Grouting Pipe 5 is placed in the reinforcing cage 6, and every pile is provided with two Grouting Pipe, and spacing is symmetrical arranged according to the bored pile diametric(al).Grouting Pipe should become 8 font colligations with the bearing rod of reinforcing cage, and apart from reinforcing cage master muscle 50mm.Do not allow it be completely fixed on the reinforcing cage, can not fracture or damage the sealing that Grouting Pipe connects because of the bending of reinforcing cage, Grouting Pipe 5 must be used 10# or 12# iron wire 7, and colligation is together securely by every interval 2m and reinforcing cage master muscle 8 one sides, before Grouting Pipe is lowered to every joint reinforcing cage, must carry out the dark mensuration of stake and the inspection work of grouting pipeline.Transfer when reinforcing cage 6 and to adopt the vibrations electric hammer that Grouting Pipe is pressed into pile bottom sediment and loosened soil position, the obstruction in the time of can avoiding slurry casting machine by concrete spouting like this after finishing.

Grouting Pipe 5 is provided with requirement: after finishing engineering piles reinforcing cage and installing, must inject clear water in Grouting Pipe, check the sealing of pipeline, filling with clear water in the Grouting Pipe, and keep stable level not descend being as the criterion.Be exposed to the Grouting Pipe upper orifice at a top, use plug to tighten, prevent that foreign material from falling in the Grouting Pipe, guarantee that grouting pipeline is unimpeded.

Below disclose the utility model with preferred embodiment, so it is not in order to restriction the utility model, and all employings are equal to replaces or technical scheme that the equivalent transformation mode is obtained, all drops within the protection domain of the present utility model.

Claims

1, a kind of slurry casting machine; it is characterized in that; comprise the black pipe of even perforate on one or more faces of cylinder and be installed in the one way valve that black pipe one end can prevent stream in the slurries; be tightly connected between each black pipe; the black pipe outside coats one deck injected hole protective cover, can put forward anti-certain external force.

2, slurry casting machine according to claim 1 is characterized in that closely connecting in conjunction with sealing glue by screw thread between each black pipe, and the black pipe outside seals with rubber sleeve.

3, slurry casting machine according to claim 1 is characterized in that the material of slurry casting machine can be steel pipe or high-strength PVC pipe.