CN218778991U

CN218778991U - Roller hearth type double-layer tempering furnace door device

Info

Publication number: CN218778991U
Application number: CN202222274891.2U
Authority: CN
Inventors: 刘占良; 赵九海; 张亮
Original assignee: AICHELIN HEAT TREATMENT SYSTEMS (BEIJING) CO LTD
Current assignee: AICHELIN HEAT TREATMENT SYSTEMS (BEIJING) CO LTD
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-03-31
Anticipated expiration: 2032-08-29

Abstract

The utility model discloses a roller hearth type double-layer tempering furnace door device, which comprises a furnace body, an upper roller rod transmission system and a lower roller rod transmission system, a heat preservation furnace door, a driving motor, a driving shaft, a transmission chain wheel chain group, a furnace door guide rail and a stroke control device, wherein the upper roller rod transmission system and the lower roller rod transmission system are arranged in the furnace body; the driving motor is fixedly arranged on the furnace body, the driving shaft is rotatably supported above the heat preservation furnace door, and the driving motor is connected with the driving shaft by a speed reducing mechanism; the driving shaft is connected with the heat preservation furnace door through a transmission chain wheel chain group. The utility model has the advantages that: the device can complete the opening and closing of the upper and lower furnace doors through one furnace door and one set of driving and transmission device, and has the advantages of simple and compact structure, small occupied space and low cost.

Description

Roller hearth type double-layer tempering furnace door device

Technical Field

The utility model relates to a heat treatment device, in particular to a heat treatment roller-hearth double-layer tempering furnace door device.

Background

At present, a roller hearth type double-layer low-temperature tempering furnace used in the bearing industry of China is provided with an upper layer roller rod transmission system and a lower layer roller rod transmission system in a furnace body, two layers of workpieces can be placed for tempering treatment, correspondingly, an upper workpiece inlet and a lower workpiece outlet are arranged on the furnace body, and furnace door devices, namely two furnace doors, two sets of driving devices, two sets of transmission devices and two sets of control devices are respectively and independently arranged on the furnace body. Large occupied space and high cost.

SUMMERY OF THE UTILITY MODEL

In view of this, the main objective of the present invention is to provide a furnace door device, which controls the opening and closing of two furnace doors through one furnace door device, so as to overcome the defects of the prior art.

In order to achieve the above purpose, the technical solution of the present invention is realized as follows: the utility model provides a heat treatment roller-hearth double-layer tempering furnace door device, includes furnace body 1 and locates upper and lower two-layer roller stick transmission system 2 in the furnace body 1, still includes heat preservation furnace door 3, driving motor 4, drive shaft 5, drive sprocket chain group 6, furnace gate guide rail 7 and stroke control device 8, furnace gate guide rail 7 be fixed in the both sides on furnace gate mouth, heat preservation furnace door 3 utilize furnace gate guide rail 7 to install on furnace body 1, driving motor 4 fixed mounting on furnace body 1, drive shaft 5 rotationally support in heat preservation furnace door 3's top, utilize reduction gears to be connected between driving motor 4 and the drive shaft 5, are connected through drive sprocket chain group 6 between drive shaft 5 and the heat preservation furnace door 3.

Furthermore, a position detection collision block is installed on the heat preservation furnace door 3, a plurality of stroke control devices 8 are further arranged on the furnace body 1, and the positions of the stroke control devices 8 respectively correspond to the closed position of the heat preservation furnace door 3, the upward movement limit position of the heat preservation furnace door 3 and the downward movement limit position of the heat preservation furnace door 3.

Furthermore, the furnace door protection device also comprises a protection cover, wherein the protection cover is arranged on a front panel of a furnace door of the tempering furnace and covers the transmission chain wheel chain group 6 and the furnace door guide rail 7.

The utility model has the advantages that: the improved roller-hearth double-layer tempering furnace can complete the opening and closing of the upper furnace door and the lower furnace door through one furnace door and one set of driving and transmission device, and has the advantages of simple and compact structure, small occupied space and low cost.

Drawings

FIG. 1 is a schematic structural view of a furnace door device of a heat treatment roller-hearth double-layer tempering furnace according to the present invention;

fig. 2 is a cross-sectional view of fig. 1.

Wherein, 1, a furnace body; 2. a roller rod transmission system; 3. a heat preservation furnace door; 4. a drive motor; 5. a drive shaft; 6. a transmission chain wheel and chain set; 7. a furnace door guide rail; 8. a stroke control device; 81. the position detection bumps.

Detailed Description

The structure and operation of the present invention will be further described with reference to the accompanying drawings and the embodiments.

As shown in fig. 1 and 2, the furnace door device of the roller-hearth double-layer tempering furnace according to the embodiment includes a furnace body 1, a roller rod transmission system 2, a heat preservation furnace door 3, a driving motor 4, a driving shaft 5, a transmission sprocket chain group 6, a furnace door guide rail 7, and a stroke control device 8.

The furnace body 1 is provided with a furnace door for the workpieces to pass in and out, and an upper layer and a lower layer of roller rod transmission system 2 are arranged in the furnace body 1 corresponding to the furnace door for placing two layers of workpieces for heat treatment. The furnace door guide rails 7 are fixed on two sides of the furnace door opening, and the heat preservation furnace door 3 is arranged on the furnace body 1 by utilizing the furnace door guide rails 7. The driving motor 4 is fixedly arranged on the furnace body 1, the driving shaft 5 is rotatably supported above the heat preservation furnace door 3, and the driving motor 4 is connected with the driving shaft 5 by a speed reducing mechanism. The driving shaft 5 is connected with the heat preservation furnace door 3 through a transmission chain wheel chain group 6.

In order to accurately control the position of the heat preservation furnace door 3, a position detection collision block 81 is arranged on the heat preservation furnace door 3, and six stroke control devices 8 are arranged on the furnace body 1, namely two stroke control devices 8 are respectively arranged corresponding to the closed position of the heat preservation furnace door 3, the upward movement limit position of the heat preservation furnace door 3 and the downward movement limit position of the heat preservation furnace door 3.

In order to ensure the operation safety, the roller-hearth-type double-layer tempering furnace door device further comprises a protective cover, the protective cover is arranged on a front panel of a tempering furnace door, and covers devices such as a transmission chain wheel chain group 6 and a furnace door guide rail 7 for protecting toothed parts from causing mechanical damage to people.

When the roller-hearth double-layer tempering furnace door device works normally, the heat preservation furnace door 3 is positioned in the middle position, the upper layer and the lower layer are closed simultaneously, and workpieces are subjected to heat treatment processes such as heating, heat preservation and the like on the roller rod transmission system 2 in the tempering furnace body 1. When a lower layer of the tempering furnace needs to enter and exit a workpiece, a driving motor 4 rotates a driving shaft 5 to drive a heat preservation furnace door 3 to move upwards through a transmission chain wheel chain group 6 until the lower layer of the tempering furnace stops at the upper position of a stroke control device 8, so that a lower furnace door opening can be opened, then a roller rod transmission system 2 at the lower layer rotates to drive the workpiece to enter and exit the tempering furnace, after the workpiece is fed and exited, the driving motor 4 rotates reversely, the heat preservation furnace door 3 is driven to return through a related device, and the position is also controlled by the stroke control device 8; similarly, when a lower layer of the tempering furnace needs to enter and exit a workpiece, the driving motor 4 rotates the driving shaft 5 to drive the heat preservation furnace door 3 to move downwards through the transmission chain wheel chain group 6 until the lower end of the stroke control device 8 is reached, so that an upper furnace door opening can be opened, then the roller rod transmission system 2 on the upper layer rotates to drive the workpiece to enter and exit the tempering furnace, after the workpiece is entered and exited, the driving motor 4 drives the heat preservation furnace door 3 to return through a related device, and the position is also controlled by the stroke control device 8. The up-and-down movement of the oven door is limited in the oven door guide rail 7, preventing the oven door from drifting.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.

Claims

1. The utility model provides a double-deck tempering furnace door device of roller end formula, includes furnace body (1) and locates upper and lower two-layer roller stick in furnace body (1) and passes a system (2), its characterized in that: still include heat preservation furnace gate (3), driving motor (4), drive shaft (5), driving sprocket chain group (6), furnace gate guide rail (7) and stroke control device (8), furnace gate guide rail (7) be fixed in the both sides on the furnace gate mouth, heat preservation furnace gate (3) utilize furnace gate guide rail (7) to install on furnace body (1), driving motor (4) fixed mounting on furnace body (1), drive shaft (5) rotationally support in the top of heat preservation furnace gate (3), utilize reduction gears to be connected between driving motor (4) and drive shaft (5), be connected through driving sprocket chain group (6) between drive shaft (5) and the heat preservation furnace gate (3).

2. The roller-hearth double-deck tempering furnace door apparatus according to claim 1, wherein: the position detection collision block is installed on the heat preservation furnace door (3), the furnace body (1) is further provided with a plurality of stroke control devices (8), and the positions of the stroke control devices (8) respectively correspond to the closed position of the heat preservation furnace door (3), the upward moving limit position of the heat preservation furnace door (3) and the downward moving limit position of the heat preservation furnace door (3).

3. The roller-hearth double-deck tempering furnace door apparatus according to claim 1, wherein: the furnace door protection device also comprises a protection cover, wherein the protection cover is arranged on a front panel of a furnace door of the tempering furnace and covers the transmission chain wheel chain group (6) and the furnace door guide rail (7).