CN1097055A

CN1097055A - Apparatus for controlling of filling amount of lubricating grease into gear

Info

Publication number: CN1097055A
Application number: CN 93107641
Authority: CN
Inventors: 木坂博
Original assignee: Mitsubishi Heavy Industries Ltd
Current assignee: Mitsubishi Heavy Industries Ltd
Priority date: 1993-06-30
Filing date: 1993-06-30
Publication date: 1995-01-04
Anticipated expiration: 2013-06-30
Also published as: CN1048797C

Abstract

A kind of apparatus for controlling of filling amount of lubricating grease into gear, it by the contact high-viscosity fluid turn round, swing or reciprocating axle, support this bearing, prevent sealing gasket that high-viscosity fluid infiltrates to bearing and carry giving the fat pump, detecting that high-viscosity fluid infiltrates the detector of lubricating point situation and control to the controller of fat pump delivery and/or head pressure etc. and constitute of lubricating grease according to the detector testing signal to the lubricating point place of bearing and sealing gasket.It can prolong sealing gasket and bearing equivalent life, reduces and changes frequency, stops because of high-viscosity fluid solidifies the axle driving force that is produced to increase.

Description

Apparatus for controlling of filling amount of lubricating grease into gear

The present invention relates to apparatus for controlling of filling amount of lubricating grease into gear, it is applicable to the high-viscosity fluid transfer pump, as the bearing lubrication position of concrete pump, mortar pump.

Concrete pump in the past can illustrate with accompanying drawing 2-accompanying drawing 5, in Fig. 2, Fig. 3, the 1st, concrete hopper, the 2nd, a pair of concrete cylinder, the 3rd, the concrete piston of each cylinder 2, the 4th, be the center along the swing pipe of Fig. 3 direction of arrow swing with the B-B axis, the 5th, be contained in the stirring shaft of the stirring fresh concrete (high-viscosity fluid) in the concrete hopper 1.

Fig. 4 is the enlarged view of Fig. 2 C portion (bearings of swing pipe 4 one sides).7 is to support the outlet side end of swing pipe 4 and make it rotating bearing shell among the figure, the 8, the 9th, and the sealing gasket of contact swing pipe 4 outlet side end outer circumferential faces, the 6th, the bearing cage of protection bearing shell 7 and sealing gasket 8,9, the 10th, the grease nipple of design on bearing cage 6.The formation of Fig. 2 C ' portion (the bearing portions of swing pipe 4 opposite sides) is also same as described above.

Fig. 5 is the enlarged view of Fig. 3 D portion (bearing parts of stirring shaft 5 one sides).11 is to support an end of stirring shaft 5 and make it rotating bearing among the figure, and 14 are mounted in the bearing shell on the stirring shaft 5, the 13rd, and the sealing gasket that contacts with bearing shell 14, the 12nd, the seal closure of maintenance sealing gasket 13,15 are provided in a side of the grease nipple on the seal closure 12.The formation of D ' portion among Fig. 3 (bearing parts of stirring shaft 5 opposite sides) also is same.

In the former concrete pump of above-mentioned Fig. 2-shown in Figure 5, the flange surface of sealing gasket 8,9,13 is if worn and torn by cement slurry, cement slurry will infiltrate between bearing shell 7 and the swing pipe 4 and reach in the bearing 11, here solidifies, and the life-span of bearing shell 7 and bearing 11 is shortened rapidly.For preventing the wearing and tearing of sealing gasket 8,9, bearing shell 7,14 and bearing 11, will forcibly inject lubricating grease in bearing cage 6 and in the seal closure 12 from grease nipple 10,15.

Above-mentioned Fig. 2-former concrete pump shown in Figure 5 forcibly injects lubricating grease from grease nipple 10,15 in bearing cage 6 and in the seal closure 12, and seal up with it, though be the wearing and tearing that will prevent sealing gasket 8,9,13 and bearing shell 7,14 and bearing 11 etc., but, if the flange surface of sealing gasket 8,9,13 is worn and torn by cement slurry, cement slurry will infiltrate in the bearing cage 6 and in the seal closure 12, come compared with the concentration of lubricating grease, and the concentration of cement slurry uprises.Produce following problem thus: to the insufficient infusion of the flange surface lubricating grease of sealing gasket 8,9,13, sealing gasket 8,9,13 wearing and tearing, bearing shell 7,14 wearing and tearing, bearing 11 wearing and tearing; Also have, because constantly solidifying of cement slurry makes axle drive resistance and increase.Will frequently change swing pipe 4, stirring shaft 5 and bearing shell 7,14 and bearing 11 etc. like this.

The present invention puts forward in view of the above problems.Its purpose is, a kind of lubricating grease injection amount control gear is provided, and it can prolong the longevity in longevity of sealing gasket and bearing, reduces and changes frequency, simultaneously, can stop because of high-viscosity fluid solidifies the axle driving force that produces to increase.

For achieving the above object, being constructed as follows of apparatus for controlling of filling amount of lubricating grease into gear provided by the invention: it has contact high-viscosity fluid and revolution, swing, the bearing of reciprocating bearing and supporting axle, have and prevent that high-viscosity fluid is to the sealing gasket of bearing infiltration with to bearing, the lubricating point of sealing gasket is carried lubricating grease, lubricated these bearings, sealing gasket give the fat pump, detect in addition whether high-viscosity fluid penetrates into the detector of above-mentioned lubricating point and according to what of the detected high-viscosity fluid amount of detector, controller of fat pump delivery and head pressure (controlling an aspect at least) or the like is given in control.

The above-mentioned apparatus for controlling of filling amount of lubricating grease into gear of the present invention that constitutes, with the high-viscosity fluid concentration at detector detection lubricating point place, resulting testing signal is delivered to controller, and controller converts it to control signal and delivers to the fat pump again.Under this state, if high-viscosity fluid is few from the amount of infiltrating to lubricating point between sealing gasket flange surface and the bearing shell, then from giving the fat pump also just few to the lubricating grease amount that lubricating point injects; If high-viscosity fluid is many from the amount of infiltrating to lubricating point between sealing gasket flange surface and the bearing shell, then from also just increase for the fat pump to the lubricating grease amount that lubricating point injects.Can suppress the infiltration capacity of high-viscosity fluid like this, often keep the lubricating grease at lubricating point place to be in suitable concentration, prevent the wearing and tearing of high-viscosity fluid sealing gasket, bearing shell, bearing etc. to the lubricating point place.

The embodiment of the invention is described with reference to the accompanying drawings.

Fig. 1 is the profile of an embodiment's of apparatus for controlling of filling amount of lubricating grease into gear of the present invention longitudinal plane;

Fig. 2 is the profile of former concrete pump longitudinal plane;

Fig. 3 is the longitudinal plane front elevation of A-A line among Fig. 2;

Fig. 4 is the longitudinal plane profile of the amplification of arrow C part among Fig. 2;

Fig. 5 is the longitudinal plane profile of the amplification of arrow D part among Fig. 3.

Below with reference to Fig. 1, illustrate that apparatus for controlling of filling amount of lubricating grease into gear of the present invention is used for an embodiment of concrete pump.Among the figure, the 5th, stirring shaft, the 11st, supporting stirring shaft 5 rotating bearings; the 14th, be contained in the bearing shell on the stirring shaft 5, the 13rd, the sealing gasket of contact bearing shell 14, the 12nd, the seal closure of protection sealing gasket 13; 15 are provided in a side of the grease nipple on the seal closure 12, and the 21st, the grease sealing portion of seal closure 12.

The 16th, variable-displacement is given the fat pump, and the 17th, variable capacity is given the oil supply of fat pump 16, and the 18th, relief valve, 19 are mounted in the pH value detector on the seal closure 12, and the end of detector 19 is positioned at above-mentioned grease sealing portion 21.The 20th, with the controller that pH value detector 19 is connected, this controller 20 is according to what of pH value detector 19 detected cement slurries, the discharge capacity (or head pressure) that the control variable capacity is given fat pump 16.

Below, specify the effect of apparatus for controlling of filling amount of lubricating grease into gear shown in Figure 1.

Detect the concentration of the grease sealing portion 21 interior cement slurries of seal closure 12 with pH value detector 19, the signal that obtains is sent to controller 20, it is transformed into control signal here, delivers to variable capacity again and give fat pump 16, control its discharge capacity (or head pressure).

Under this state, if cement slurry is few from the infiltration capacity to grease sealing portion 21 between the flange surface of sealing gasket 13 and the bearing shell 14, then variable capacity gives fat pump 16 also just few to the lubricating grease injection amount of grease sealing portion 21; If cement slurry is many from the infiltration capacity to grease sealing portion 21 between the flange surface of sealing gasket 13 and the bearing shell 14, then the variable capacity lubricating grease amount of injecting for fat pump 16 to grease sealing portion 21 is also just many.Like this, can suppress the infiltration capacity of cement slurry, often keep the suitable concentration of lubricating grease in the grease sealing portion 21, prevent the wearing and tearing that produce by cement slurry sealing gasket 13, bearing shell 14, bearing 11 etc. to grease sealing portion 21.

In sum, the effect of apparatus for controlling of filling amount of lubricating grease into gear of the present invention is as follows: with the high-viscosity fluid concentration at detector detection oil site place, resulting detection signal is delivered to controller, by controller it is converted to control signal, delivers to the fat pump again. Under this state, if high-viscosity fluid is few from the amount of infiltrating to oil site between sealing flange face and the bearing shell, lubricating grease discharge rate or the discharge pressure of then sending for the fat pump to the oil site place are also just little; If high-viscosity fluid is many from the amount of infiltrating to oil site between sealing gasket flange surface and the bearing shell, lubricating grease discharge rate or the discharge pressure of sending then for the fat pump to the oil site place are also just big. Like this, can suppress high-viscosity fluid to the infiltration capacity at oil site place, often keep the suitable concentration of oil site place lubricating grease, prevent the wearing and tearing to sealing gasket, bearing shell, bearing etc. that produced by high-viscosity fluid. And, can also prolong life-span of sealing gasket, bearing etc., reduce replacement frequency, simultaneously, can also stop because high-viscosity fluid solidifies the axle driving force that produces to increase.

Claims

1, a kind of apparatus for controlling of filling amount of lubricating grease into gear is characterized in that: it by the contact high-viscosity fluid turn round, swing or reciprocating axle, support this bearing, prevent sealing gasket that high-viscosity fluid infiltrates to bearing and carry giving the fat pump, detecting that high-viscosity fluid infiltrates the detector of lubricating point situation and what SC sigmal control of the high-viscosity fluid amount that detects according to detector is given the formations such as controller of fat pump delivery and head pressure (controlling an aspect at least) of these bearings of grease lubrication and sealing gasket to the lubricating point place of bearing and sealing gasket.