CN216005953U

CN216005953U - Annealing stove closed loop chain formula furnace gate hoist mechanism

Info

Publication number: CN216005953U
Application number: CN202122599216.2U
Authority: CN
Inventors: 马俊
Original assignee: Nanjing Zhengguang Furnace Industry Co ltd
Current assignee: Nanjing Zhengguang Furnace Industry Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-03-11
Anticipated expiration: 2031-10-27

Abstract

The utility model discloses an annealing stove closed loop chain formula furnace gate hoist mechanism, including driving motor, dual output shaft worm gear speed reducer, transmission shaft, drive sprocket, transition sprocket, switching-over sprocket, driven sprocket and chain. The driving chain wheel, the transition chain wheel, the reversing chain wheel, the driven chain wheel and the chain are respectively arranged at the left side and the right side of the furnace door to form a left side chain transmission mechanism and a right side chain transmission mechanism. After the chain is fixedly connected with the bottom fixed point and the middle upper fixed point of the furnace door, the head part sequentially bypasses the transition chain wheel in the forward direction, the driving chain wheel in the forward direction, the reversing chain wheel in the reverse direction and the driven chain wheel in the forward direction to be connected with the tail part to form a closed loop.

Description

Annealing stove closed loop chain formula furnace gate hoist mechanism

Technical Field

The utility model relates to a heat treatment technical field, concretely relates to annealing stove closed loop chain formula furnace gate hoist mechanism.

Background

Open-loop chain is adopted mostly to the furnace gate hoist mechanism of current annealing stove, discloses a bearing furnace gate elevating system that security and stability are high as chinese patent CN212299944U, including the stand, establish the crossbeam on the stand, the crossbeam is provided with the bearing frame, install the sprocket on the bearing frame, install speed and displacement control case device on stand or the crossbeam, run through in speed and the displacement control case device and install bearing chain, bearing chain one end is stretched out speed and is connected in the counter weight with displacement control case device, bearing chain other end is stretched out speed and is passed through the sprocket connection in the furnace gate with displacement control case device. The safety switch of the furnace door can be guaranteed, but the accuracy, the safety and the stability of opening and closing of the furnace door are required to be improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an annealing stove closed loop chain formula furnace gate hoist mechanism.

The utility model adopts the technical proposal that:

a closed-loop chain type furnace door lifting mechanism of an annealing furnace comprises a driving motor, a double-output-shaft worm gear reducer, two transmission shafts, two driving sprockets, a transition sprocket and a reversing sprocket, two driven sprockets, and two chains, wherein the driving motor is installed at the center of the top of a furnace body; when the oven door is opened, part of the upward moving chain is an upward chain part, part of the downward moving chain is a downward chain part, and the upward chain part is fixedly connected with a fixing point at the bottom of the oven door and a fixing point at the middle upper part.

Furthermore, two driven chain wheels can be arranged at the bottom of the furnace body in a vertically sliding manner and can be locked and fixed on the chain wheel fixing frame through locking nuts.

Further, the tooth numbers and pitches of the driving sprocket, the transition sprocket, the reversing sprocket and the driven sprocket are equal.

Furthermore, the horizontal center line of the transition chain wheel is collinear with the driving chain wheel, and the vertical center line of the transition chain wheel is collinear with the driven chain wheel; the reversing chain wheel is positioned below the transition chain wheel and the driving chain wheel, and the rotating direction of the reversing chain wheel is opposite to that of the transition chain wheel, the driving chain wheel and the driven chain wheel.

Furthermore, threaded holes are formed in the reinforcing beams at the bottom and the upper part of the furnace door, screws are connected in the threaded holes in a threaded mode, pin holes are formed in the heads of the screws, one end of a pin shaft of the chain is connected with the chain plate, and the other end of the pin shaft of the chain is inserted into the pin hole of the reinforcing beam to connect the screws.

Further, still include the vertical direction channel-section steel of locating the furnace gate both sides, the both sides of furnace gate are provided with a plurality of running rollers with the notch adaptation of direction channel-section steel.

The utility model has the advantages that:

1. the utility model discloses need not set up the counter weight, avoided the counter weight at the danger that reciprocates the in-process and bruise operating personnel, and eliminated because of the not hard up potential safety hazard that drops is connected to the counter weight.

2. The utility model discloses a closed loop chain drives the furnace gate and reciprocates, and opening and closing of furnace gate is controlled by driving motor 1, and the speed of opening and closing is controlled by dual output shaft worm gear speed reducer 2, and the accurate nature that the furnace gate was opened and was closed is high.

3. The utility model discloses an opening and closing of chain drive control furnace gate, chain drive operation is reliable, and the stability that the furnace gate was opened and was closed is high.

Drawings

FIG. 1 is a schematic view of the front mounting structure of a closed-loop chain type furnace door lifting mechanism of an annealing furnace.

FIG. 2 is a schematic side view of the closed-loop chain type furnace door lifting mechanism of the annealing furnace of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and a preferred embodiment.

Referring to fig. 1 to 3, the present embodiment provides a closed-loop chain type furnace door lifting mechanism for an annealing furnace, which includes a driving motor 1, a worm gear reducer 2 with two output shafts, a transmission shaft 3, a driving sprocket 4, a transition sprocket 5, a reversing sprocket 6, a driven sprocket 7, and a chain 8. The driving chain wheel 4, the transition chain wheel 5, the reversing chain wheel 6, the driven chain wheel 7 and the chain 8 are respectively arranged at the left side and the right side of the furnace door to form a left side chain transmission mechanism and a right side chain transmission mechanism.

The driving motor 1 is arranged at the center of the top of the furnace body 20 through a motor base, and the output shaft of the motor vertically extends downwards.

The double-output-shaft worm gear speed reducer 2 is arranged above the driving motor 1, the worm gear input shaft is coaxially connected with the motor output shaft, and the worm output shafts respectively extend out to the left side and the right side.

Two transmission shafts 3 are symmetrically arranged at two sides of the worm gear speed reducer 2 with double output shafts, one end of each transmission shaft is coaxially connected with the worm output shaft through a coupler, and the other end of each transmission shaft is rotatably arranged at the top of the furnace through a first bearing seat and a second bearing seat.

Two driving chain wheels 4 are respectively and fixedly sleeved between the first bearing seat and the second bearing seat of the left transmission shaft and the right transmission shaft. The driving motor 1 drives the driving chain wheel 4 to rotate after being decelerated by the double-output-shaft worm gear reducer 2. The two transition chain wheels 5 are respectively rotatably arranged at the outer sides of the left driving chain wheel 4 and the right driving chain wheel 4 through a first chain wheel bracket, and the horizontal central lines of the two transition chain wheels are collinear with the horizontal central line of the driving chain wheel 4. The two reversing chain wheels 6 are respectively rotatably arranged below the space between the driving chain wheel 4 and the transition chain wheel 5 on the left side and the right side through second chain wheel brackets. Two driven chain wheels 7 are respectively and rotatably arranged at the bottoms of the furnace bodies on the left side and the right side through third chain wheel brackets, and the vertical central lines of the driven chain wheels and the vertical central lines of the transition chain wheels 5 are collinear.

The driven chain wheel 7 and the transition chain wheel 5 are designed in a collinear way, so that the chain 8 can vertically pull the oven door 20 to ascend or descend, and the ascending and descending of the oven door are more flexible and stable.

The tooth numbers and the pitches of the driving chain wheel 4, the transition chain wheel 5, the reversing chain wheel 6 and the driven chain wheel 7 are all equal. After the chain 8 is fixedly connected with a fixed point 82 at the bottom of the oven door and a fixed point 81 at the upper part, the head part sequentially bypasses the transition chain wheel 5 forwards, the driving chain wheel 4 forwards, the reversing chain wheel 6 backwards, the driven chain wheel 7 forwards and is connected with the tail part to form a closed loop.

Preferably, the third sprocket support is composed of a fixed plate and two mounting plates vertically connected to the front side face of the fixed plate, a vertical long circular hole is formed in the center of each mounting plate, two ends of a sprocket shaft of the driven sprocket 7 penetrate through the long circular holes of the two mounting plates respectively and are fixed through locking nuts, the locking nuts are loosened, and the sprocket shaft of the driven sprocket 7 can slide up and down in the long circular hole. The tightness of the chain 8 is adjusted by sliding up and down.

The guide channel steel 11 is vertically arranged on two sides of the furnace door 10, a plurality of rollers matched with notches of the guide channel steel 11 are arranged on two sides of the furnace door 10, and the rollers roll in the guide channel steel 11 when the furnace door 10 rises or falls, so that friction between the furnace door and the guide channel steel is reduced, and the furnace door can be opened and closed more flexibly.

Preferably, the chain 8 is connected with the oven door 20 through a pin shaft, the reinforcing beam 101 at the bottom and the upper part of the oven door 10 is provided with a threaded hole, a screw 102 is connected with the threaded hole in a threaded manner, the head of the screw 102 is provided with a pin hole, one end of the pin shaft 103 of the chain 8 is connected with the chain plate, and the other end of the pin shaft is inserted into the pin hole of the reinforcing beam 101 to be connected with the screw 102. The furnace door and the chain are connected by the pin shaft of the chain, the position of the fixed point is adjusted by the depth of the adjusting screw 102 screwed into the threaded hole, the structure is simple and convenient, and the chain is convenient to replace and maintain.

The utility model discloses a theory of operation is:

referring to fig. 2, the driving motor 1 rotates forward to drive the driving sprockets 4 on the left side and the right side to rotate clockwise, the chain 8 winds the tooth form of the driving sprocket 4 clockwise, the transition sprocket 5 and the driven sprocket 7 rotate synchronously and in the same direction as the driving sprocket 4, the reversing sprocket 6 rotates synchronously and in the opposite direction as the driving sprocket 4, the outer side chain rises, the inner side chain falls, and the oven door 10 moves upwards along the guide channel steel 11 to be opened; the driving motor 1 rotates reversely to drive the driving chain wheels 4 on the left side and the right side to rotate anticlockwise, the chain 8 winds the tooth form of the driving chain wheels 4 anticlockwise and clockwise, the inner side chain rises, the outer side chain falls, and the furnace door 10 moves downwards along the guide channel steel 11 to be closed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.

Claims

1. A closed-loop chain type furnace door lifting mechanism of an annealing furnace is characterized by comprising a driving motor, a double-output-shaft worm gear reducer, two transmission shafts, two driving sprockets, a transition sprocket and a reversing sprocket, two driven sprockets, two chains and two chains, wherein the driving motor is installed at the center of the top of a furnace body; when the oven door is opened, part of the upward moving chain is an upward chain part, part of the downward moving chain is a downward chain part, and the upward chain part is fixedly connected with a fixing point at the bottom of the oven door and a fixing point at the middle upper part.

2. The closed-loop chain type furnace door lifting mechanism of the annealing furnace as claimed in claim 1, wherein two driven chain wheels are slidably mounted on the bottom of the furnace body up and down and can be locked and fixed on the chain wheel fixing frame by locking nuts.

3. The annealing furnace closed loop chain type furnace door lifting mechanism according to claim 1, wherein the driving sprocket, the transition sprocket, the reversing sprocket and the driven sprocket have the same number of teeth and pitch.

4. The annealing furnace closed loop chain type furnace door lifting mechanism according to claim 1, wherein the horizontal center line of the transition chain wheel is collinear with the driving chain wheel, and the vertical center line is collinear with the driven chain wheel; the reversing chain wheel is positioned below the transition chain wheel and the driving chain wheel, and the rotating direction of the reversing chain wheel is opposite to that of the transition chain wheel, the driving chain wheel and the driven chain wheel.

5. The closed-loop chain type furnace door lifting mechanism of an annealing furnace as claimed in claim 1, wherein the reinforcing beam at the bottom and upper part of the furnace door is provided with a threaded hole, a screw is connected with the threaded hole in a threaded manner, the head of the screw is provided with a pin hole, one end of the pin shaft of the chain is connected with the chain plate, and the other end of the pin shaft is inserted into the pin hole of the reinforcing beam to be connected with the screw.

6. The closed-loop chain type furnace door lifting mechanism of an annealing furnace according to claim 1, further comprising guide channel steel vertically arranged at both sides of the furnace door, wherein both sides of the furnace door are provided with a plurality of rollers adapted to the notches of the guide channel steel.