A kind of large-size horizontal thermal treatment vacuum furnace stove gate device
Technical field
The present invention relates to a kind of large-size horizontal thermal treatment vacuum furnace stove gate device, can guarantee the sealing and the steady operation of large-scale fire door, the process of fire door start or stop simultaneously all realizes automation control, thereby has realized the start or stop of large-size horizontal thermal treatment vacuum furnace fire door.Belong to the metal heat treatmet equipment technical field.
Background technology
What at present, horizontal thermal treatment vacuum furnace fire door all adopted is the hinge type fire door.This fire door still relatively is suitable for respect to middle-size and small-size horizontal thermal treatment vacuum furnace.But for the large-size horizontal thermal treatment vacuum furnace, there is following shortcoming in this structure: (1) fire door is connected with body of heater by hinge, owing to be large-scale fire door, from great, be easy to cause the sagging of fire door, thereby cause fire door well not seal, vacuum can not get guaranteeing in the stove, makes the performance of heat treated article and quality can not get guaranteeing.(2) fire door is connected with body of heater by hinge, since the hinge self structure, the existence of problems such as mode that employing and body of heater are welded to connect and self rigidity.Simultaneously large-size horizontal thermal treatment vacuum furnace fire door weight is all more than several tons, in long-term use, and the structural instability of hinge type fire door.(3) the hinge type fire door is by the mode opening and closing fire door that manually draws commentaries on classics, but for the fire door of large-size horizontal thermal treatment vacuum furnace, since the problem of fire door own wt, the artificial opening and closing that are difficult to finish easily fire door.
Summary of the invention
The technical problem to be solved in the present invention has provided a kind of design of large-size horizontal thermal treatment vacuum furnace door structure, can not guarantee poor stability, the problem that labour intensity is high to solve the sealing property that exists in the prior art.
For solving the problems of the technologies described above, the invention provides following technical scheme: a kind of large-size horizontal thermal treatment vacuum furnace stove gate device, comprise fire door, stove door switch mechanism, wherein: also comprise the fire door dolly, fire door and stove door switch mechanism are installed on the fire door dolly, described fire door dolly is under the driving of power set, driving fire door and stove door switch mechanism moves back and forth on the track of body of heater front portion, the pulling device of described stove door switch mechanism is connected with fire door, when the fire door dolly arrives the body of heater middle part, the opening and closing of the expansion link control fire door of the pulling device of stove door switch mechanism.
A kind of preferred version as large-size horizontal thermal treatment vacuum furnace stove gate device of the present invention, wherein: on the described fire door idler wheel mechanism is installed, idler wheel mechanism is placed on the fire door moving guide rail on the fire door dolly, the pulling device of described stove door switch mechanism is a cylinder, the expansion link of cylinder is fixedlyed connected with fire door by the jointing of cylinder, the flexible fire door that drives of cylinder moves back and forth on the fire door moving guide rail, opens or open fire door.
As a kind of preferred version of large-size horizontal thermal treatment vacuum furnace stove gate device of the present invention, wherein: the idler wheel mechanism on the described fire door is two, is made up of support of fire door roller and fire door roller system, and symmetry is installed in fire door middle part horizontal level.
As a kind of preferred version of large-size horizontal thermal treatment vacuum furnace stove gate device of the present invention, wherein: the jointing of described cylinder is fixedly connected on the both sides at fire door middle part, and described cylinder is two, is symmetricly set on the fire door dolly, and is connected with fire door.
A kind of preferred version as large-size horizontal thermal treatment vacuum furnace stove gate device of the present invention, wherein: described fire door dolly comprises power set and transmission mechanism, this transmission mechanism comprises drive sprocket, bushroller chain and driven sprocket, on the output shaft of fire door dolly power set drive sprocket has been installed, drive sprocket is connected with driven sprocket by bushroller chain, driven sprocket is fixed on the driving shaft, power set are fixedly mounted on fire door dolly base, under the driving of power set, drive drive shaft turns by chain gear transmission, move around thereby can make on the track of fire door dolly before body of heater.
Adopted the beneficial effect of structure of the present invention to be: good seal performance, the job stability height has been realized door opened and has been closed the automation of overall process.
Description of drawings
Fig. 1 is that the door structure master looks schematic diagram.
Fig. 2 is the door structure schematic top plan view.
Fig. 3 is that schematic diagram is looked on a door structure left side.
Fig. 4 is that fire door docks schematic diagram with body of heater.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
As figure, description of reference numerals: 1 fire door dolly, 1-1 reducing motor, 1-2 chain gear transmission, the 1-2A drive sprocket, 1-2B bushroller chain, 1-2C driven sprocket, 1-3 driving shaft, 1-4 driving wheel A, 1-5 rolling bearing units, 1-6 fire door dolly base, 1-7 dolly integrated support, 1-8 fire door moving guide rail, 2 stove door switch mechanisms, 2-1 cylinder (having gudgeon angle seat), 2-2 cylinder jointing, 3 fire doors, 3-1 fire door roller supports, 3-2 fire door roller system, 4 tracks, 5 bodies of heater.
Referring to Fig. 1~Fig. 4, the present invention includes fire door dolly 1, stove door switch mechanism 2 and fire door 3, stove door switch mechanism 2 and fire door 3 are installed on the fire door dolly 1.Comprise power set (as reducing motor) and transmission mechanism at described fire door dolly 1, this transmission mechanism comprises drive sprocket 1-2A, bushroller chain 1-2B and driven sprocket 1-2C, a reducing motor 1-1 has been installed in the fire door dolly 1, drive sprocket 1-2A has been installed on the output shaft of reducing motor 1-1, drive sprocket 1-2A is connected with driven sprocket 1-2C by bushroller chain 1-2B, driven sprocket 1-2C is fixed on the driving shaft 1-3, and reducing motor 1-1 is fixedly mounted on the fire door dolly base 1-6.Under the driving of reducing motor 1-1, driving driving shaft 1-3 by chain gear transmission 1-2 rotates, thereby can make move left and right on the track 4 of fire door dolly before body of heater, when the fire door dolly arrives assigned address, three travel switches are installed at the middle part of dolly, first travel switch control is slowed down, and second travel switch control is stopped, the extreme position of the 3rd travel switch control dolly.
Referring to shown in Figure 3, in described fire door 3, idler wheel mechanism is installed, idler wheel mechanism supports 3-1 by the fire door roller and the fire door roller is that 3-2 forms, and idler wheel mechanism is installed on the middle part horizontal level of fire door.The center of gravity of whole fire door drops on the center of idler wheel mechanism, guarantees that fire door 3 can steadily move on the fire door moving track 1-8 on the fire door dolly 1.
Referring to shown in Figure 2, in described stove door switch mechanism 2, have cylinder 2-1(to have gudgeon angle seat) and cylinder jointing 2-2, cylinder 2-1 is fixed on the fire door dolly 1 by gudgeon angle seat, cylinder 2-1 is connected with cylinder jointing 2-2, and cylinder jointing 2-2 is welded on the place, both sides at fire door 3 middle parts.Cylinder 2-1 moves forward and backward at fire door moving guide rail 1-8 by expansion link control fire door 3 after ventilation, thus the opening and closing of control fire door.
Fig. 4 is fire door 3 and the schematic diagram that body of heater 5 docks, and is the state of fire door when closing, and the fire door dolly moves to the body of heater middle part from the left side of body of heater 5, stops to move opening and closing fire door 3 under the promotion of stove door switch mechanism 2 under the control of travel switch.
It should be noted that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.