CN2825253Y - Stirring mechanism for concrete transfer pump - Google Patents

Abstract

The utility model discloses a stirring mechanism for a concrete transfer pump. The utility model comprises a stirring shaft and bearing seats which are arranged on both ends of the stirring shaft. The bearing seats are provided with oil injection holes which are led to the stirring shaft. The matching surface of the bearing seats and the stirring shaft is provided with J-shaped dust-proof rings approaching to the end part of one end of a hopper. One side of axial lines of the oil injection holes is provided with one-way sealing rings approaching to the J-shaped dust-proof rings, and the back parts of the axial lines of the oil injection holes are also provided with sealing rings. An outwards extruded oil pressure film can be generated among the stirring shaft and the bearing seats of the utility model. When the external concrete extrudes the J-shaped sealing rings, the forward pressure of the oil pressure film balances the extruding force, which efficiently prevents the concrete from intruding. Thus, the concrete can not enter among the stirring shaft and the bearing seats, which provides long-term guarantee for the normal operation of the shaft, and extends the service life of the stirring mechanism.

Description

Rabbling mechanism in the concrete pump

Technical field

The utility model relates to the rabbling mechanism in a kind of concrete pump.

Background technology

Present concrete pump, shaft in its rabbling mechanism and the lubricant passage way between the bearing block seal, only be used to lubricate, in order to prevent that the concrete in the hopper from entering between bearing block and the shaft, overlapping a sealing gasket on the shaft and sealing gasket is being pressed on the axle bed by a gland, make the slit inlet between sealing gasket sealing shaft and bearing block, but use after two 3 months because shaft and sealing gasket wearing and tearing, the sealing property of sealing gasket descends rapidly, concrete is clamp-oned between axle and the bearing block from sealing gasket gradually, finally cause shaft to rotate, rabbling mechanism was lost efficacy.

The utility model content

The purpose of this utility model is to provide a kind of rabbling mechanism that can effectively improve in the rabbling mechanism concrete pump in service life.

The utility model rabbling mechanism, the bearing block that comprises the wear-resisting shaft of integral type, shaft two ends, there is oil filler point to lead to shaft on the bearing block, on bearing block and face that shaft cooperates, one side by the end position place of hopper one end be provided with the J-shaped dust ring, also there is sealing ring oil filler point axis front by have one-way sealing circle, the oil filler point axis back of J type dust ring.

The utility model is owing to respectively established sealing ring in the oil filler point both sides on bearing block and shaft mating surface, wherein one of front is the one-way sealing circle.When oil constantly when oilhole injects, on the one hand lubricated shaft, oil constantly can make oil pressure raise toward injection between two sealing rings on the other hand, when pressure is raised to certain value, oil can be by the one-way sealing circle, arrive J type dust ring, form the oil pressure film that outwards pushes uniformly, when the concrete of outside produces extruding to the J RunddichtringO, oil pressure film pressure forward will produce with it and contend with, and resist concrete invasion effectively, thereby make concrete can't enter between axle and the bearing block, for the normal operation of axle provides long-term assurance, significantly prolonged in the life-span of rabbling mechanism.

Description of drawings

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

Fig. 2 is that enlarged drawing is looked on the utility model part J type dust ring right side.

The specific embodiment

Fig. 1 has reflected concrete structure of the present utility model, shown in the figure, the utility model still comprises shaft 1 and bearing block 2 thereof, fuel feed hole 3 is arranged on the bearing block 2, the back of fuel feed hole 3 is sealing rings 4, as long as sealing circle 4 can seal, type is not done requirement, but preferably adopt the sealing of YX shape, the front of fuel feed hole 3 is necessary for one-way sealing circle 5, what present embodiment adopted is bag backbone sealing ring in the Type B, and to guarantee unidirectional the passing through of pressure oil energy, bearing block end (by an end of hopper 7) is a J type dust ring 6, this dust ring preferably adopts the J type dust ring of band muscle, as shown in Figure 2, the inner face of J type circle is evenly equipped with many ribs 61, and this rib can make the oil pressure film very even.Sealing ring 4 can guarantee that the oil that is input into does not flow backward, and to produce oil pressure film forward, one-way sealing circle 5 can only flow oil forward, can not reflux, and makes the oil pressure film prevent concrete intrusion jointly with J type dust ring, guarantees that shaft can run well for a long time.

Claims (2)

1, the rabbling mechanism in a kind of concrete pump, the bearing block (2) that comprises shaft (1), shaft (1) two ends, there is oil filler point (3) to lead to shaft (1) on the bearing block (2), it is characterized in that on bearing block (2) and face that shaft (1) cooperates, the axis front that is provided with J-shaped dust ring (6), oil filler point (3) by the end position place of hopper one end by J type dust ring (6) one side have one-way sealing circle (5), oil filler point axis back sealing ring (4) is also arranged.

2, the rabbling mechanism in the concrete pump according to claim 1 is characterized in that the inner face of described J type dust ring (6) is evenly equipped with many ribs (61).

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