CN204780610U - Mud jacking platform truck - Google Patents

Abstract

The utility model discloses a mud jacking platform truck belongs to highway engineering equipment field, including flow metering device, flow metering device includes defeated thick liquid pipeline and play thick liquid pipeline with the prestressed pipe intercommunication, all be provided with the flowmeter on defeated thick liquid pipeline and the play thick liquid pipeline, flowmeter vertical installation is on the pipeline is starched with the play to defeated thick liquid pipeline, and the grout from bottom to top in the flowmeter carries. The utility model provides a grout flow control more accurate mud jacking platform truck improves the grout quality of prestressing force bridge.

Description

A kind of squeezing trolley

Technical field

The utility model relates to highway project equipment field, and especially a kind of squeezing trolley, for being in the milk to precast beam.

Background technology

Pre-stressed bridge is very general in bridge construction construction, and the grouting quality of the prestress pipe in pre-stressed bridge is one of the key factor the most determining bridge quality.The grouting quality reaching designing requirement can make prestress wire play one's part to the full, the loss of prestress phenomenon that anchor head stress is concentrated and passed in time is there will be when there is grouting quality defect, and the design stress of beam body can be changed, reduce the supporting capacity of bridge, and then affect the application life of bridge, and bring use safety hidden danger.According to statistics, because mud jacking leakiness causes steel strand corrosion in prestress pipe, prestressing force is lost in advance, and bridge can be caused to foreshorten to 1/10th of projected life actual life.Therefore the grouting quality of prestress pipe is the critical process that bridge construction quality controls.

The grouting equipment of prestress pipe is primarily of squeezing trolley machine.Current squeezing trolley mainly comprises the slurry can of agitator tank for being mixed by mud jacking raw material and storage of water mud, a centrifugal pump is set outside slurry can for providing pressure for cement paste, prestress pipe one end is provided with the grout pipe line of cement paste, the other end has pulp pipeline, grout pipe line and pulp pipeline are all provided with flow meter for being metered into the size of prestress pipe and the flow by the cement paste exported in pipeline, grout pipe line and the pulp pipeline of generally installing flow meter are all horizontal positioned, flow meter level be arranged on pipeline, in use, there is not the inaccurate problem of metering in cement paste flow measurement when grout pipe line and pulp pipeline being all full of, but when grouting procedure starts, in pipeline, cement paste is according to by without to having again to being full of pipeline, when not being full of cement paste in pipeline, flow meter is not accurate especially to the metering of cement paste flow, and cement paste level pass through flow meter, between cement paste, space is larger, loosely, metering for flow also can produce error, these all can affect the quality of pre-stressed bridge.Squeezing trolley all needs to carry out cleaning procedure in time after being used to complete simultaneously, especially more easily shelter evil people and countenance evil practices at flow meter and grout pipe line and pulp line connection, the place cleaning of these joints simultaneously does not often have the clean of smooth pipeline cleaning yet, in the course of time the cement slurry sets of joint and more and more, the flow measurement of cement paste can be more and more inaccurate.

Utility model content

The utility model technical issues that need to address are to provide a kind of squeezing trolley, and grouting flow-control is more accurate, improves the grouting quality of pre-stressed bridge.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:

A kind of squeezing trolley, comprise flow measurement device, described flow measurement device comprises the grout pipe line and pulp pipeline that are communicated with prestress pipe, described grout pipe line and pulp pipeline are provided with flow meter, described flow meter is vertically arranged on grout pipe line and pulp pipeline, and the cement paste in flow meter is carried from bottom to top.

The further improvement of technical solutions of the utility model is: described grout pipe line comprises a pipe I vertically arranged, and pulp pipeline comprises a pipe II vertically arranged, and described flow meter is vertically arranged on pipe I and pipe II.

The further improvement of technical solutions of the utility model is: described flow counts electromagnetic flowmeter.

Owing to have employed technique scheme, the technological progress that the utility model obtains is:

Flow meter is vertically arranged on grout pipe line and pulp pipeline, and cement paste is from bottom to top through flow meter, and cement paste is being full of the whole pipeline of below flow meter all through flow meter, flow measurement is more accurate; Cement paste is by the removal of bubbles between cement paste under the effect of self gravitation, and gap is less well-offer, ensures that cement paste flow measurement is more accurate.The residue that the pipeline simultaneously vertically placed makes squeezing trolley remain in pipeline and flow meter joint when cleaning more easily is washed away by water, increases pipeline service life, minimizing plugging fault.

Accompanying drawing explanation

Fig. 1 is the utility model pipe-line layout schematic diagram;

Wherein, 1, agitator tank, 2, slurry can, 5, mud jacking screw pump, 6, flow meter, 12, centrifugal pump, 501, pipe I, 502, pipe II.

Detailed description of the invention

Below in conjunction with embodiment, the utility model is described in further details:

As shown in Figure 1, this uses novel squeezing trolley to comprise agitator tank 1, agitator tank 1 lower end connects the import of centrifugal pump 12 by pipeline, centrifugal pump 12 exports the top being led to slurry can 2 by pipeline, slurry can 2 lower end connects a mud jacking screw pump 5, mud jacking screw pump 5 exit end connects grout pipe line, and the grout pipe line other end is communicated with the prestress pipe of pre-stressed bridge, and the cement paste in slurry can 2 is pressed in prestress pipe by grout pipe line pressurization and goes by mud jacking screw pump 5.The exit end of prestress pipe connects pulp pipeline, and pulp pipeline rear end arranges two pipelines, and a pipeline leads to slurry can 2, and another pipeline leads to useless stock tank.

Grout pipe line comprises a pipe I 501 vertically arranged, and pulp pipeline comprises a pipe II 502 vertically arranged, on the vertical mounting pipe I 501 of flow meter 6 and pipe II 502.Electromagnetic flowmeter 6 comprises a measuring tube be connected with pipe II 502 with pipe I 501, spool is set out perpendicular to measuring tube, outlet-pipe is installed the display unit of display flow, be all enter from the below of pipe I 501 and pipe II 502 to carry upward when two pipelines that cement paste passes through, the cement paste namely in flow meter 6 is carried from bottom to top again.

Pipe I 501 and pipe II 502 are all vertically placed, flow meter 6 is vertically arranged on pipe I 501 and pipe II 502, in pipe I 501 and pipe II 502, cement paste is from bottom to top through flow meter 6, all be full of in pipeline through the cement paste of flow meter 6 that to install below flow meter 6 position whole with pipeline, the pipeline of flow meter 6 lower end namely on pipe I 501 and pipe II 502 is full of cement paste, and flow measurement is more accurate; Cement paste is by the removal of bubbles between cement paste under the effect of self gravitation, and gap is less well-offer, ensures that cement paste flow measurement is more accurate.The residue that the pipe I 501 simultaneously vertically placed and pipe II 502 make squeezing trolley remain in pipeline and flow meter 6 joint when cleaning more easily is washed away by water, increases pipeline service life, minimizing plugging fault.

Claims (3)

1. a squeezing trolley, comprise flow measurement device, described flow measurement device comprises the grout pipe line and pulp pipeline that are communicated with prestress pipe, described grout pipe line and pulp pipeline are provided with flow meter (6), it is characterized in that: described flow meter (6) is vertically arranged on grout pipe line and pulp pipeline, and the cement paste in flow meter (6) is carried from bottom to top.

2. a kind of squeezing trolley according to claim 1, it is characterized in that: described grout pipe line comprises a pipe I (501) vertically arranged, pulp pipeline comprises a pipe II (502) vertically arranged, and described flow meter (6) is vertically arranged on pipe I (501) and pipe II (502).

3. a kind of squeezing trolley according to claim 1, is characterized in that: described flow meter (6) is electromagnetic flowmeter.