CN213208665U

CN213208665U - Furnace door lifting mechanism of STC furnace

Info

Publication number: CN213208665U
Application number: CN202021641175.8U
Authority: CN
Inventors: 刘坤全
Original assignee: Hangzhou Hangshen Energy Saving Furnaces Co ltd
Current assignee: Hangzhou Hangshen Energy Saving Furnaces Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-05-14
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses a furnace gate hoist mechanism of STC stove, including portal, hoist mechanism, counter weight mechanism. The door frame is arranged on a furnace body of the STC furnace; the two groups of lifting mechanisms are respectively arranged on two sides of the gantry; the counterweight mechanism is connected to the lifting mechanism; the lifting mechanism comprises a rotating shaft which is rotatably arranged on the door frame, a lifting chain wheel which is arranged on the rotating shaft, a lifting chain which is arranged between the lifting chain wheel and the oven door and a driving device which drives the rotating shaft to rotate; the counterweight mechanism comprises a counterweight chain wheel arranged on the rotating shaft, a counterweight block and a counterweight chain arranged between the counterweight chain wheel and the counterweight block; the direction of the rotational acting force of the rotating shaft by the counter weight block is opposite to the direction of the rotational acting force of the weight of the furnace door to the rotating shaft. The lifting mechanism provides power for the rotating shaft through the driving device, and the lifting chain lifts the furnace door through the lifting chain wheel. The furnace door lifting mechanism of the STC furnace enhances the stability of the whole lifting mechanism, reduces the working pressure of the driving device and prolongs the service life of the driving device.

Description

Furnace door lifting mechanism of STC furnace

Technical Field

The utility model relates to a heat treatment furnace equipment technical field, concretely relates to furnace gate hoist mechanism of STC stove.

Background

The industrial heat treatment furnace is widely applied to heat treatment production in the fields of petroleum, chemical industry, metallurgy, machinery, building materials, electronics and the like. A furnace door lifting mechanism of a heat treatment furnace is a key component of the heat treatment furnace, and the furnace door of the traditional STC heat treatment furnace mostly adopts an electric lifting structure, so that the defects of higher equipment installation height, high failure rate of a motor in the later period, incapability of starting the furnace door in emergency after power failure, more investment cost and the like exist.

Chinese patent No. CN202246736U discloses a device for driving the furnace door to ascend and descend. The device for driving the furnace door to ascend and descend comprises a hydraulic pump, an electromagnetic directional valve, a first control valve, a hydraulic cylinder, a first transmission chain, a second transmission chain, a transmission shaft, a first chain wheel, a second chain wheel and a power supply, and is characterized by further comprising an air filter, wherein the air filter is connected with a rodless cavity of the hydraulic cylinder through a middle matching pipe. However, the entire lifting mechanism of the apparatus for driving the door to ascend and descend is poor in stability, and the hydraulic cylinder is subjected to a large working pressure in an operating state, which may reduce the service life of the lifting mechanism.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the above-mentioned problem to exist among the prior art provides a furnace gate hoist mechanism of STC stove, and the furnace gate hoist mechanism of its STC stove is equipped with the gravity that is used for balanced furnace gate, and connects the counter weight mechanism on hoist mechanism. The counterweight mechanism comprises a counterweight chain wheel arranged on the rotating shaft, a counterweight block and a counterweight chain arranged between the counterweight chain wheel and the counterweight block; the direction of the rotational acting force of the counter weight block on the rotating shaft is opposite to the direction of the rotational acting force of the weight of the furnace door on the rotating shaft. The technical problems that the furnace door lifting mechanism of the STC furnace is poor in stability and large in working pressure borne by a hydraulic cylinder in a working state, and the service life of the lifting mechanism is shortened in the using process of the furnace door lifting mechanism are solved.

In order to solve the technical problem, the utility model is realized by the following technical scheme:

the furnace door lifting mechanism of the STC furnace comprises a door frame, wherein the door frame is arranged on a furnace body of the STC furnace; the two groups of lifting mechanisms are respectively arranged on two sides of the gantry; the counterweight mechanism is connected to the lifting mechanism and is used for balancing the gravity of the furnace door; the lifting mechanism comprises a rotating shaft which is rotatably arranged on the door frame, a lifting chain wheel which is arranged on the rotating shaft, a lifting chain which is arranged between the lifting chain wheel and the oven door and a driving device which drives the rotating shaft to rotate; the counterweight mechanism comprises a counterweight chain wheel arranged on the rotating shaft, a counterweight block and a counterweight chain arranged between the counterweight chain wheel and the counterweight block; the direction of the rotation acting force of the counter weight block on the rotating shaft is opposite to the direction of the rotation acting force of the weight of the furnace door on the rotating shaft, so that the stability of the furnace door lifting mechanism of the STC furnace is enhanced, the pressure of the driving device in a working state is reduced, and the service life of the driving device is prolonged.

Furthermore, the driving device is driven by air pressure and comprises a driving chain wheel arranged on the rotating shaft, a pneumatic cylinder arranged on one side surface of the furnace body and a driving chain arranged between the driving chain wheel and the pneumatic cylinder, and is used for providing power capable of lifting up and down for the lifting mechanism.

Furthermore, the rotating shaft and the door frame are both one, the rotating shaft is transversely arranged on the two side frames on the upper portion of the door frame, so that the lifting chain wheels arranged on the rotating shaft on the two sides of the door frame and the counterweight chain wheels arranged on the rotating shaft can synchronously rotate, and the purpose of consistent operation is achieved.

Preferably, the rotating shaft is connected with the door frame through a roller bearing, so that friction between the rotating shaft and the door frame is reduced, and the service life of the rotating shaft is prolonged.

Preferably, the lifting mechanism further comprises a transmission chain wheel, a transmission gear and a transmission chain; the number of the lifting chain wheels is two; the number of the transmission chain wheels is two; the number of the transmission gears is one; the door frames are multiple and are arranged in parallel at intervals in the front-back direction; the three rotating shafts are respectively and longitudinally arranged at the corresponding positions of the upper end and the lower end of the edge side of the plurality of door frames and the middle part of the top of the door frame, and are connected with the plurality of door frames; the lifting chain wheels are respectively arranged on the rotating shafts at the upper end and the lower end of the edge side of the portal frame; the lifting chain wheels are connected in a winding manner through the lifting chain; the counterweight chain wheel is arranged on the rotating shaft at the upper end of the side of the portal frame; the transmission chain wheels are respectively arranged on the rotating shafts at the upper ends of the sides of the portal frame and the middle part of the top cross rod; the transmission gear is arranged on the rotating shaft near the middle part of the cross bar at the top of the portal; the transmission gears between the lifting mechanisms are meshed with each other, so that the lifting chain wheels arranged on the rotating shafts on two sides of the portal frame and the counterweight chain wheels arranged on the rotating shafts can synchronously rotate through the transmission chain wheels and the transmission gears, and the purpose that the lifting chain wheels and the counterweight chain wheels of two groups run consistently is achieved.

Preferably, the number of the gantries is two, and the lifting chain wheel and the transmission gear are arranged on the rotating shaft between the gantries; the counterweight chain wheel and the transmission chain wheel are respectively arranged at two ends of the rotating shaft.

Further, a fixing mechanism is arranged between the lifting mechanism and the furnace door; the fixing mechanism comprises supporting plates arranged between the gantries and a frame for connecting and fixing the supporting plates; the two ends of the lifting chain are connected with the upper end and the lower end of the supporting plate, and the lifting chain is used for connecting the furnace door with the lifting mechanism, so that the furnace door is convenient to fix and lift.

Preferably, a sliding groove is formed in the contact surface of the supporting plate and the furnace door, so that the furnace door can be conveniently moved, adjusted and installed on the furnace body.

Preferably, the driving sprocket and the counterweight sprocket are arranged on the same side of the gantry.

Further, the weight of balancing weight is 50% to 75% of the dead weight of furnace gate, and the balancing weight has strengthened whole hoist mechanism's stability, can reduce the operating pressure of cylinder simultaneously, improves the life-span.

Compared with the prior art, the utility model has the advantages that: the furnace door lifting mechanism of the STC furnace enhances the stability of the whole lifting mechanism, reduces the working pressure of the driving device and prolongs the service life of the driving device.

Drawings

Fig. 1 is a schematic structural view of a furnace door lifting mechanism of an STC furnace according to an embodiment of the present invention.

Fig. 2 is a front view of a first embodiment of the present invention.

Fig. 3 is a schematic structural view of a furnace door lifting mechanism of an STC furnace according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 5 is a schematic structural view of a fixing mechanism in the second embodiment of the present invention.

The reference numbers are as follows:

1. a furnace body; 2. a gantry; 3. a lifting mechanism; 31. a rotating shaft; 32. a lifting sprocket; 33. lifting the chain; 34. a drive device; 341. a drive sprocket; 342. a pneumatic cylinder; 343. a drive chain; 4. a counterweight mechanism; 41. a counterweight sprocket; 42. a balancing weight; 43. a counterweight chain; 5. a fixing mechanism; 51. a support plate; 52. A frame; 53. a chute; 6. a furnace door.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Fig. 1 and fig. 2 are a schematic structural view and a front view of a furnace door lifting mechanism of an STC furnace according to an embodiment of the present invention. In the first embodiment of the present invention, one gantry 2 is provided on the furnace body 1 of the STC furnace for supporting the operation of the lifting mechanism 3; the two groups of lifting mechanisms 3 are respectively arranged on two sides of the gantry 2; the counterweight mechanism 4 is connected to the lifting mechanism 3 and is used for balancing the gravity of the furnace door 6; the lifting mechanism 3 comprises a rotating shaft 31 rotatably arranged on the gantry 2, a lifting chain wheel 32 arranged on the rotating shaft 31, a lifting chain 33 arranged between the lifting chain wheel 32 and the oven door 6 and a driving device 34 for driving the rotating shaft 31 to rotate, wherein the rotating shaft 31 is one and is transversely arranged on two side frames at the upper part of the gantry 2; the counterweight mechanism 4 comprises a counterweight chain wheel 41 arranged on the rotating shaft 31, a counterweight block 42 and a counterweight chain 43 arranged between the counterweight chain wheel 41 and the counterweight block 42, wherein the weight of the counterweight block 42 is 50-75% of the self weight of the oven door 6; the direction of the rotational acting force of the counterweight 42 on the rotating shaft 31 is opposite to the direction of the rotational acting force of the weight of the oven door 6 on the rotating shaft 31; the driving device 34 of the oven door lifting mechanism is driven by air pressure and comprises a driving chain wheel 341 arranged on the rotating shaft 31, a pneumatic cylinder 342 arranged on one side surface of the oven body 1 and a driving chain 343 arranged between the driving chain wheel 341 and the pneumatic cylinder 342, wherein the number of teeth of the driving chain wheel 341 is half of that of the lifting chain wheel 32, so that the stroke of the pneumatic cylinder 342 is half of that of the oven door 6, and the cost can be saved; the driving sprocket 341 and the counterweight sprocket 41 are arranged on one end of the rotating shaft 31 on the same side of the gantry 2; the rotating shaft 31 is connected with the door frame 2 by adopting a roller bearing, so that the sliding friction between the rotating shaft 31 and the door frame 2 is converted into rolling friction, and further the abrasion between the rotating shaft 31 and the door frame 2 is reduced.

This furnace gate hoist mechanism of STC stove can drive sprocket through the drive chain on the push rod of connection on the pneumatic cylinder and rotate, because promote the sprocket, counter weight sprocket and drive sprocket setting are in same pivot, drive sprocket drives and promotes sprocket and counter weight sprocket and rotate simultaneously, and promote to be connected through promoting the chain between sprocket and the furnace gate, be connected through counter weight chain between counter weight sprocket and the balancing weight, and the balancing weight is opposite to the rotation effort direction of the weight counter weight to the weight of furnace gate, thereby it can the even running promote the furnace gate to reach whole hoist mechanism, reduce drive arrangement's operating pressure, improve drive arrangement's life's purpose.

Fig. 3, 4 and 5 are schematic structural diagrams of an oven door lifting mechanism and a fixing mechanism of an STC oven according to an embodiment of the present invention. In the second embodiment, two portal frames 2 are arranged in parallel at intervals in the front and back, wherein one portal frame 2 is arranged on the furnace body 1 of the STC furnace and is used for supporting the operation of the lifting mechanism 3; the two groups of lifting mechanisms 3 are respectively arranged on two sides of the gantry 2; the counterweight mechanism 4 is connected on the lifting mechanism 3 and is used for balancing the gravity of the furnace door 6; the lifting mechanism 3 comprises a rotating shaft 31 which is rotatably arranged on the door frame 2, a lifting chain wheel 32 which is arranged on the rotating shaft 31, a lifting chain 33 which is arranged between the lifting chain wheel 32 and the oven door 6, a driving device 34 which drives the rotating shaft 31 to rotate, a transmission chain wheel 35 which is arranged on the rotating shaft 31, a transmission gear 36 which is arranged on the rotating shaft 31 and a transmission chain 37 which is arranged between the transmission chain wheels 35; the three rotating shafts 31 are respectively and longitudinally arranged at the corresponding positions of the upper end and the lower end of the edge side of the two door frames 2 and the middle part of the top, and are connected with the two door frames 2; two lifting chain wheels 32 are respectively arranged on the rotating shafts 31 at the upper end and the lower end of the edge side between the portal frames 2, and the lifting chain wheels 32 are wound and connected through lifting chains 33; two transmission chain wheels 35 are respectively arranged on the upper end of the side of the portal frame 2 and the rotating shaft 31 close to the middle part of the top cross bar; the transmission gear 36 is one and is arranged on the rotating shaft 31 near the middle part of the top cross bar between the door frames 2; the transmission gears 36 between the lifting mechanisms 3 are meshed with each other; the counterweight mechanism 4 comprises a counterweight chain wheel 41 arranged on the rotating shaft 31, a counterweight block 42 and a counterweight chain 43 arranged between the counterweight chain wheel 41 and the counterweight block 42, wherein the counterweight chain wheel 41 is arranged on the rotating shaft 31 at the upper end of the side of the door frame 2, the weight of the counterweight block 42 is 50-75% of the self weight of the oven door 6, the counterweight chain wheel 41 and the transmission chain wheel 35 are respectively arranged at two ends of the rotating shaft 31, and the direction of the rotation acting force of the counterweight block 42 on the rotating shaft 31 is opposite to the direction of the rotation acting force of the weight of the oven door 6 on the; a fixing mechanism 5 is arranged between the lifting mechanism 3 and the oven door 6, and the fixing mechanism 5 comprises a support plate 51 arranged between the gantries 2 and a frame 52 connected with the fixed support plate; the two ends of the lifting chain 33 are connected with the upper end and the lower end of the supporting plate 51, and a sliding groove 53 is arranged on the contact surface of the supporting plate 51 and the furnace door 6, so that the furnace door 6 can move on the fixing mechanism 5 and can be installed with the furnace body 1; the driving sprocket 341 and the balance weight sprocket 41 are disposed on the same side of the gantry 2.

Compared with the first embodiment, in the lifting process of the oven door lifting mechanism of the STC oven, the door frame can limit the position of the oven door, so that the swinging of the oven door in the lifting process is reduced, and a sliding groove is formed in a supporting plate of the fixing mechanism, so that the oven door can be conveniently moved and installed between the oven body.

Some features of the above embodiments may be interchanged and omitted, and the scope of the present invention should not be limited thereto, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be encompassed by the present invention.

Claims

1. The utility model provides a furnace gate hoist mechanism of STC stove which characterized in that: comprises that

The door frame (2), the door frame (2) is arranged on the furnace body (1) of the STC furnace;

the lifting mechanisms (3) are divided into two groups, and the two groups of lifting mechanisms (3) are respectively arranged on two sides of the gantry (2); and

the counterweight mechanism (4), the counterweight mechanism (4) is connected to the lifting mechanism (3) and is used for balancing the gravity of the furnace door (6);

the lifting mechanism (3) comprises a rotating shaft (31) which is rotatably arranged on the door frame (2), a lifting chain wheel (32) which is arranged on the rotating shaft (31), a lifting chain (33) which is arranged between the lifting chain wheel (32) and the oven door (6) and a driving device (34) which drives the rotating shaft (31) to rotate; the counterweight mechanism (4) comprises a counterweight chain wheel (41) arranged on the rotating shaft (31), a counterweight block (42) and a counterweight chain (43) arranged between the counterweight chain wheel (41) and the counterweight block (42); the direction of the rotational acting force of the counter weight block (42) on the rotating shaft (31) is opposite to the direction of the rotational acting force of the weight of the oven door (6) on the rotating shaft (31).

2. The oven door lifting mechanism for STC ovens of claim 1, wherein: the driving device (34) is driven by air pressure and comprises a driving chain wheel (341) arranged on the rotating shaft (31), a pneumatic cylinder (342) arranged on one side surface of the furnace body (1) and a driving chain (343) arranged between the driving chain wheel (341) and the pneumatic cylinder (342).

3. The oven door lifting mechanism of STC oven of claim 1 or 2, wherein: the rotating shaft (31) and the door frame (2) are both one, and the rotating shaft (31) is transversely arranged on the frames at the two sides of the upper part of the door frame (2).

4. The oven door lifting mechanism for STC ovens of claim 3, wherein: the rotating shaft (31) is connected with the door frame (2) through a roller bearing.

5. The oven door lifting mechanism of STC oven of claim 1 or 2, wherein: the lifting mechanism (3) further comprises a transmission chain wheel (35), a transmission gear (36) and a transmission chain (37); the number of the lifting chain wheels (32) is two; the number of the transmission chain wheels (35) is two; the number of the transmission gear (36) is one; the door frames (2) are arranged in parallel at intervals from front to back; the three rotating shafts (31) are respectively and longitudinally arranged at the corresponding positions of the upper end and the lower end of the edge side of the plurality of door frames (2) and the middle part of the top, and are connected with the plurality of door frames (2); the lifting chain wheels (32) are respectively arranged on the rotating shafts (31) at the upper end and the lower end of the edge side of the portal frame (2); the lifting chain wheels (32) are connected in a winding way through the lifting chain (33); the counterweight chain wheel (41) is arranged on the rotating shaft (31) at the upper end of the side of the gantry (2); the transmission chain wheels (35) are respectively arranged on the rotating shafts (31) at the upper ends of the sides of the portal frame (2) and in the middle of the top cross bar; the transmission gear (36) is arranged on the rotating shaft (31) near the middle part of the cross bar at the top of the door frame (2); the transmission gears (36) between the lifting mechanisms (3) are meshed with each other.

6. The oven door lifting mechanism for STC ovens of claim 5, wherein: the number of the gantries (2) is two, and the lifting chain wheel (32) and the transmission gear (36) are arranged on the rotating shaft (31) between the gantries (2); the counterweight chain wheel (41) and the transmission chain wheel (35) are respectively arranged at two ends of the rotating shaft (31).

7. The oven door lifting mechanism for STC ovens of claim 6, wherein: a fixing mechanism (5) is arranged between the lifting mechanism (3) and the furnace door (6); the fixing mechanism (5) comprises supporting plates (51) arranged between the gantries (2) and a frame (52) for connecting and fixing the supporting plates; and two ends of the lifting chain (33) are connected with the upper end and the lower end of the supporting plate (51).

8. The oven door lifting mechanism for STC ovens of claim 7, wherein: and a sliding groove (53) is arranged on the contact surface of the supporting plate (51) and the furnace door (6).

9. The oven door lifting mechanism for STC ovens of claim 2, wherein: the driving chain wheel (341) and the counterweight chain wheel (41) are arranged on the same side of the gantry (2).

10. The oven door lifting mechanism of STC oven of claim 1 or 2, wherein: the weight of the balancing weight (42) is 50-75% of the self weight of the oven door (6).