CN2553928Y

CN2553928Y - Sliding metering gadt and keyboard skidway mechanism

Info

Publication number: CN2553928Y
Application number: CN 02206250
Authority: CN
Inventors: 边仁杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-21
Filing date: 2002-02-21
Publication date: 2003-06-04
Anticipated expiration: 2012-02-21

Abstract

The utility model discloses a sliding sizing nozzle and a keyboard slideway mechanism used for metallurgy steelmaking continuous casting. The mechanism of the utility model aims at reducing the problem that the existing sliding mechanism has over-high requirement to the fireproof material size. The utility model is characterized in that the utility model adopts an arch foot shaped keyboard slideway and a half-ball nozzle; the utility model has the advantages that the plate-shaped fireproof material is mainly subject to the arch-shaped force; the precisions of the dimension tolerance and geometric tolerance of the self-centering structure combination combined with the half-ball nozzle are greatly reduced compared with the existing slideway mechanism.

Description

Slip metering nozzle and keyboard slideway mechanism

This novel casting field, particularly direct casting of controlling gold steel-making that belong to.

This novel discovery as yet in the prior art.

Above-mentioned novel purpose provides the slip metering nozzle mechanism of a kind of continuous casting tundish special use, and it can use the bigger slip metering nozzle of fit dimension tolerance, solves because of the also corresponding too high problem of the high slide gate nozzle production cost of dimension precision requirement.

The technical scheme that addresses this problem is that the slideway of support slip metering nozzle is installed on the datum plate of fixing filling pipe end, (to call the mouth of a river in the following text) mouth of a river can connect the immersion mouth of a river and move replacing by the crab claw hook push-and-pull on piston rod top, it is characterized in that: ground way [8] and a plurality of key [3] that is supported by spring [5] are arranged in the keyboard slideway support mouth of a river of forming in the key box [7] [6] and cooperate with the filling pipe end planar slide, the link that immerses the mouth of a river [9] has an inclined-plane X, and crab claw hook is formed by being connected with the piston rod top [13] that push-and-pull hook [11] axle that moves back hook pull bar [12] is connected hydraulic cylinder.The not cracked needs of push-and-pull pressure that bear hydraulic cylinder for the mouth of a river when changing are wrapped in the box hat, the expense of box hat is to account for 10～15% of mouth of a river total cost, therefore technique scheme is very not perfect, if can remove box hat and also have 10～15% the rate of cost reduction.Above-mentioned for this reason technical characterictic is correspondingly done following four kinds of variations, and they all do not depart from matter of the present utility model.1, the mouth of a river becomes milk-globule shape and is installed in and cooperates with the filling pipe end planar slide in the slidable trapezoidal mouth of a river seat T.2, the mouth of a river becomes milk-globule shape and is installed in and cooperates with the filling pipe end planar slide in the fan-shaped mouth of a river seat S, and the fan handle end of fan-shaped mouth of a river seat has that an opening is slotting to be connected on the ball journal post [10], and its arc tips rides on the arc keyboard slideway and slides.

The mouth of a river is made up of inner core and overcoat two parts, by shaking property of heat resistanceheat resistant Al preferably ₂O ₃Material is made, and inner core is by the anti-ZrO that washes away wear-resistant and anti-etch ₂Material is made.ZrO ₂Reversible crystal phase transition takes place in the time of～1000 ℃, simultaneously with～17% Volume Changes; Though it is also low that the mouth of a river shape manufacturing of technique scheme is easier to cost, and small part ZrO is arranged ₂Inner core exposes and does not add protection; this part easily takes place cracked from mealiness when crystal phase transition; so the mouth of a river manufactures Fig. 7, the trapezoidal mouth of a river of TH type and Fig. 8 of inner core shoulder E are arranged, has the RH type milk-globule shape mouth of a river of inner core shoulder E more reasonable; though manufacture difficulty is greater than the former, its safety in utilization is better than the former greatly.

The advantage of technique scheme is that the keyboard slideway is very loose to the dimensional requirement that the mouth of a river is mated, and the milk-globule shape has realized the materials minimum quantization, and spherical mechanical property also is best, and spherical still self-centering structure can be eliminated a certain amount of form and position tolerance.

Fig. 1, be the profile of the trapezoidal mouth of a river and keyboard slideway mechanism.

Fig. 2, be the keyboard slideway mechanism profile of the milk-globule shape mouth of a river and trapezoidal mouth of a river seat.

Fig. 3, be that the keyboard slideway mechanism of the milk-globule shape mouth of a river and fan-shaped mouth of a river seat cuts open machine figure.

Fig. 4, be Fig. 1, the A-A view.

Fig. 5, be Fig. 3, the B-B view.

Fig. 6, be the schematic diagram that piston rod connects crab claw hook.

Fig. 7, be the trapezoidal mouth of a river of the TH type cut-away view that inner core shoulder E is arranged.

Fig. 8, be the RH type milk-globule shape mouth of a river cut-away view that inner core shoulder E is arranged.

The contrast accompanying drawing is done more detailed explanation below.

Fig. 1,2,3 is three specific embodiments.Their degree of lip-rounding shapes that dewaters all are similar with mouth of a river seat and the different outer remainder of ball journal thereof.Mouth of a river seat T and mouth of a river seat S are developed by box hat K, and function all is for protecting the mouth of a river not cracked.Ball journal is developed by ground way, compares more simple and reliablely with it, and the push-and-pull of fan-shaped mouth of a river seat just can be realized by the single hook push-and-pull of push-and-pull hook [11].The characteristics of push-and-pull hook are that push-and-pull hook automatic hook is on the mouth of a river when advancing the mouth of a river, and it is held by hook and returns to return the piston rod mouth of a river, move back hook pull bar [12] and return piston rod push-and-pull hook expansible and mouth of a river unhook again as drawing earlier.

The using method of keyboard slideway mechanism is that datum plate [2] is fixed at the bottom of the tundish, and the plane of filling pipe end [1] and datum plate plane are positioned at the back installation slideway and the mouth of a river on the same plane by positioning strip [4].

Claims

1, a kind of slide metering nozzle and keyboard slideway mechanism are the slideways that support slip metering nozzle is installed on the datum plate of fixing filling pipe end, (to call the mouth of a river in the following text) mouth of a river can connect the immersion mouth of a river and move replacing by the crab claw hook push-and-pull on piston rod top, it is characterized in that: ground way [8] and a plurality of key [3] that is supported by spring [5] are arranged in the keyboard slideway support mouth of a river of forming in the key box [7] [6] and cooperate with the filling pipe end planar slide, the link that immerses the mouth of a river [9] has an inclined-plane X, and crab claw hook is formed by being connected with the piston rod top [13] that push-and-pull hook [11] axle that moves back hook pull bar [12] is connected hydraulic cylinder.

2, according to claim 1, described slip metering nozzle and keyboard slideway mechanism, its feature: the mouth of a river is that milk-globule shape is installed in and cooperates with the filling pipe end planar slide in the slidable mouth of a river seat T.

3, according to claim 1, described slip metering nozzle and keyboard slideway mechanism, its feature: the mouth of a river is that milk-globule shape is installed in and cooperates with the filling pipe end planar slide in the fan-shaped mouth of a river seat S, the fan handle end of fan-shaped mouth of a river seat has an opening to insert to be connected on the ball journal post [10], and its arc tips rides on the arc keyboard slideway and slides.

4, according to claim 1, described slip metering nozzle and keyboard slideway mechanism, its feature: the mouth of a river is the trapezoidal mouth of a river of TH type that inner core shoulder E is arranged.

5, according to claim 1, described slip metering nozzle and keyboard slideway mechanism, its feature: the mouth of a river is the RH type milk-globule shape mouth of a river that inner core shoulder E is arranged.