CN218951449U

CN218951449U - Trolley type heat treatment furnace for special steel

Info

Publication number: CN218951449U
Application number: CN202223205343.0U
Authority: CN
Inventors: 王震; 金铖; 林凡雄
Original assignee: Taizhou Judong Precision Casting Co ltd
Current assignee: Taizhou Judong Precision Casting Co ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-05-02
Anticipated expiration: 2032-12-01

Abstract

The utility model relates to a heat treatment facility's field especially relates to a trolley-type heat treatment furnace for special steel, including platform truck and furnace body, furnace and the furnace mouth that is linked together with this furnace mouth have been seted up to the furnace body, and the platform truck can pass the furnace mouth business turn over furnace mouth the inner wall of furnace is provided with sealing along the direction of movement of platform truck, and the upper surface activity of platform truck is provided with sealing along the direction of movement of platform truck, and the platform truck still is provided with the drive arrangement that can drive sealing two and go up and down, and when the platform truck was located furnace's heating position, drive arrangement can drive sealing two and rise and make sealing two paste mutually with sealing one. The sealing device has the advantages of being good in sealing effect and the like.

Description

Trolley type heat treatment furnace for special steel

Technical Field

The application relates to the field of heat treatment equipment, in particular to a trolley type heat treatment furnace for special steels.

Background

The special steel is high-quality steel, so that the special steel is recycled, the energy consumption can be effectively reduced, in order to eliminate the structure defect, improve the structure, homogenize components and refine grains, improve the mechanical property of the steel and reduce residual stress, the recycled special steel is usually required to be annealed, the heat treatment furnace for annealing at present mainly comprises a trolley furnace, mainly comprises a furnace body, a trolley and a track, the track for trolley travelling passes through a hearth of the furnace body along the movement direction of the trolley, and the trolley filled with workpieces can enter and exit the hearth along the track; because the trolley needs to move into and out of the hearth, a gap is required to be formed between the trolley and the inner walls of the hearth on two sides, and a sealing piece is required to seal the gap to ensure tightness.

In the related art, when the sealing piece between the furnace body and the trolley is used, friction is generated between the sealing piece and the trolley when the trolley enters and exits, and the sealing layer needs to be replaced after the trolley is used for a period of time, otherwise, the sealing effect is affected.

Disclosure of Invention

In order to improve the sealing effect of a heat treatment furnace, the application provides a trolley type heat treatment furnace for special steels.

The application provides a trolley type heat treatment furnace for special steels adopts the following technical scheme:

the utility model provides a trolley-type heat treatment furnace for special steels, includes platform truck and furnace body, furnace and the mouth that is linked together with this furnace are seted up to the furnace body, the platform truck can pass the mouth business turn over the furnace, the inner wall of furnace is provided with sealing along the direction of movement of platform truck, the upper surface of platform truck is provided with sealing along the direction of movement activity of platform truck, the platform truck still is provided with the drive arrangement that can drive sealing two and go up and down, when the platform truck is located the heating position of furnace, drive arrangement can drive sealing two and rise and make sealing two paste mutually with sealing one.

By adopting the technical scheme, the special steel is placed on the trolley, then the trolley moves into the hearth, the heat treatment furnace heats the special steel, the special steel is heated to a preset temperature, the heat is preserved, and then the special steel is transported out and cooled through the trolley for annealing. Because the trolley is located the heating position of furnace, drive arrangement can drive sealing portion two and rise, makes sealing portion two paste mutually with sealing portion one to play better sealed heat preservation effect, when the trolley leaves the heating position of furnace, sealing portion two descends, and sealing portion two takes place the friction with sealing portion one time when avoiding the trolley to remove, improves sealed effect.

Preferably, the upper surface of the trolley is provided with a groove along the moving direction of the trolley, the second sealing part is movably arranged in the groove, and the height of the second sealing part is smaller than that of the groove.

Through adopting above-mentioned technical scheme, when the platform truck is located furnace's heating position, sealing portion two is crossed the recess and is pasted with sealing portion one mutually, and when the platform truck left furnace's heating position, sealing portion two got back to in the recess, avoided taking place to rub with sealing portion one.

Preferably, the trolley is provided with a first chute and a second chute along the height direction of the trolley, the upper end of the first chute and the upper end of the second chute are communicated with the grooves, the driving device comprises a first ejector rod and a second ejector rod which are respectively arranged in the first chute and the second chute in a sliding manner, the trolley is provided with a first driving assembly which can be contacted with the lower end of the first ejector rod and drive the first ejector rod to lift up, and the furnace body is provided with a second driving assembly which can be contacted with the lower end of the second ejector rod and drive the second ejector rod to lift up.

By adopting the technical scheme, the driving assembly drives the first ejector rod to lift up to enable one end of the second sealing part to lift up, and the driving assembly drives the second ejector rod to lift up to enable the other end of the second sealing part to lift up to enable the whole second sealing part to lift up and contact with the first sealing part to form sealing.

Preferably, the furnace body is movably provided with a furnace door along the height direction of the furnace body, the furnace body is provided with a lifting mechanism capable of driving the furnace door to lift, the first driving component comprises a lever pivoted on the trolley, the lower end of the furnace door can be contacted with a power arm of the lever, and a resistance arm of the lever can be contacted with the lower end of the first ejector rod.

Through adopting above-mentioned technical scheme, the furnace gate descends and makes the lower extreme of furnace gate contact with the power arm of lever, drives the lever and swings to make the resistance arm of lever contact with the lower extreme of ejector pin one, drive ejector pin one and rise, drive the one end of sealing part two and lift, and when furnace gate risen, leave the power arm of lever, the lever resets, the ejector pin descends, the one end of sealing part two descends.

Preferably, the trolley is provided with an installation cavity, the lower end of the first sliding chute is communicated with the installation cavity, and the resistance arm of the lever is positioned in the installation cavity.

Through adopting above-mentioned technical scheme, design the resistance arm in the installation intracavity, reduce resistance arm jamming risk.

Preferably, a sliding rail is arranged at the furnace mouth of the furnace body along the height direction of the furnace body, and a sliding block in sliding fit with the sliding rail is arranged on the side wall of the furnace door.

By adopting the technical scheme, the furnace door moves along the sliding rail, so that the accuracy in moving can be improved.

Preferably, the second driving assembly comprises an arc-shaped boss fixed on the rear wall of the hearth, the trolley is provided with a horizontal groove communicated with the sliding groove, the second ejector rod is L-shaped, the vertical section of the second ejector rod is located in the second sliding groove, the horizontal section of the second ejector rod is located in the horizontal groove, the horizontal section of the second ejector rod is provided with a rolling element capable of contacting with the arc-shaped boss, and when the trolley is close to the rear wall of the hearth, the rolling element on the second ejector rod can roll upwards along the arc-shaped boss.

Through adopting above-mentioned technical scheme, when the platform truck is close to furnace's back wall, the rolling element on the ejector pin two can upwards roll along arc boss, drives ejector pin two and lifts, and when the platform truck was in furnace's heating position, ejector pin two drove sealing portion two's the other end and sealing portion one contact.

Preferably, the sealing part two comprises a metal body, the upper surface of the metal body is provided with a mounting groove, a carbon felt is embedded in the mounting groove, and the thickness of the carbon felt is larger than the depth of the mounting groove.

By adopting the technical scheme, the carbon felt is high-temperature resistant and has good sealing effect.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the trolley moves, friction is not easy to occur between the second sealing part and the first sealing part, and the sealing effect is good.

Drawings

Fig. 1 is a perspective view of a heat treatment furnace according to an embodiment of the present application.

Fig. 2 is a plan view of a heat treatment furnace according to an embodiment of the present application.

Fig. 3 is a cross-sectional view taken along line A-A of fig. 2.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a sectional view taken along line B-B of fig. 2.

Fig. 6 is an enlarged view of a portion B in fig. 5.

Fig. 7 is an enlarged view of a portion C in fig. 5.

Reference numerals illustrate: 1. a trolley; 11. a roller; 12. a second sealing part; 121. a metal body; 122. a carbon felt; 13. a groove; 2. a furnace body; 21. a support column; 22. a guide rail; 23. a furnace; 24. a first sealing part; 25. a first chute; 26. a second chute; 3. a driving device; 31. a first ejector rod; 32. a first driving assembly; 321. a lever; 3211. a power arm; 3212. resistance arm; 33. a mounting cavity; 34. a second ejector rod; 35. a second driving component; 351. arc-shaped bosses; 352. a horizontal slot; 353. a rolling member; 4. a furnace door; 5. a lifting mechanism; 51. pulley block; 52. and a transmission chain.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

As shown in fig. 1 and 2, the trolley type heat treatment furnace comprises a trolley 1 and a furnace body 2, wherein the furnace body 2 is square, a support column 21 is arranged at the bottom of the furnace body 2, a guide rail 22 is further arranged at the bottom of the furnace body 2 in order to realize movement of the trolley 1, the guide rail 22 is arranged along the feeding and discharging directions of special steels, namely the movement direction of the trolley 1, and rollers 11 in rolling fit with the guide rail 22 are arranged at the bottom of the trolley 1. The trolley 1 can be connected with the trolley 1 through a linear motor, a power cylinder or other devices to drive the trolley 1 to move, and the roller 11 can be driven to rotate through a motor.

As shown in fig. 1 and 3, the furnace body 2 is provided with a furnace chamber 23 and a furnace mouth communicating with the furnace chamber 23, and the carriage 1 can pass through the furnace mouth to enter and exit the furnace chamber 23.

In order to realize heating, a heating resistor is arranged on the inner wall of the hearth 23, and the lower part of the hearth 23 is designed in an open mode for the trolley 1 to enter and exit.

As shown in fig. 3 and 4, a first sealing portion 24 is provided on the inner wall of the furnace chamber 23 in the moving direction of the carriage 1, and a second sealing portion 12 is provided on the upper surface of the carriage 1 in the moving direction of the carriage 1.

Specifically, the first sealing portion 24 may be made of a metal material and fixed to the inner wall of the furnace 23. The upper surface of platform truck 1 has seted up recess 13 along the direction of movement of platform truck 1, and seal two 12 activity sets up in recess 13, and the height of seal two 12 is less than the height of recess 13, and the width of seal two 12 is less than the width of recess 13, and the length of seal two 12 is less than the length of recess 13 for seal two 12 is movable relative to recess 13.

In this embodiment, the second sealing portion 12 includes a metal body 121, a mounting groove is formed in an upper surface of the metal body 121, a carbon felt 122 is embedded in the mounting groove, and a thickness of the carbon felt 122 is greater than a depth of the mounting groove.

Alternatively, the metal body 121 may be embedded with asbestos in its mounting groove.

As shown in fig. 4 and 5, the trolley 1 is further provided with a driving device 3 capable of driving the second sealing part 12 to lift, and when the trolley 1 is located at the heating position of the furnace 23, the driving device 3 can drive the second sealing part 12 to lift so that the second sealing part 12 is attached to the first sealing part 24.

In this embodiment, the trolley 1 is provided with a first chute 25 and a second chute 26 along its height direction, the upper end of the first chute 25 and the upper end of the second chute 26 are both communicated with the groove 13, and the communication points are respectively near two ends of the groove 13.

As shown in fig. 5 and 6, the driving device 3 includes a first ejector rod 31 slidably disposed in the first chute 25, and a first driving component 32 capable of contacting with a lower end of the first ejector rod 31 and driving the first ejector rod 31 to lift is disposed on the trolley 1.

Specifically, the furnace body 2 is movably provided with a furnace door 4 along its height direction, in this embodiment, a sliding rail is provided at the furnace mouth of the furnace body 2 along the height direction of the furnace body 2, and a sliding block in sliding fit with the sliding rail is provided on the side wall of the furnace door 4.

The furnace body 2 is provided with a lifting mechanism 5 capable of driving the furnace door 4 to lift, in this embodiment, the lifting mechanism 5 comprises a winch, a pulley block 51 and a transmission chain 52 which are arranged on the furnace body 2, the winch and the pulley block 51 are fixed on the furnace body 2, one end of the transmission chain 52 is connected with the output end of the winch, the other end of the transmission chain 52 bypasses the pulley block 51 to be connected with the furnace door 4, and the winch can be retracted and released to drive the furnace door 4 to lift.

Therefore, besides sliding fit with the furnace body 2, the furnace door 4 can also be provided with no sliding rail, and the transmission chain 52 can be positioned to a certain degree by being connected with the furnace door 4.

Alternatively, the lifting mechanism 5 may be a linear motor, a hydraulic cylinder, or the like.

As shown in fig. 5 and 6, the first driving assembly 32 includes a lever 321 pivotally connected to the trolley 1, the lower end of the oven door 4 can contact with a power arm 3211 of the lever 321, and a resistance arm 3212 of the lever 321 can contact with the lower end of the first ejector rod 31.

Preferably, the trolley 1 is provided with a mounting cavity 33, the lower end of the first chute 25 is communicated with the mounting cavity 33, and the resistance arm 3212 of the lever 321 is positioned in the mounting cavity 33.

The furnace door 4 descends to enable the lower end of the furnace door 4 to be in contact with the power arm 3211 of the lever 321, the lever 321 is driven to swing, so that the resistance arm 3212 of the lever 321 is in contact with the lower end of the first ejector rod 31, the first ejector rod 31 is driven to ascend, one end of the second sealing part 12 is driven to ascend, and when the furnace door 4 ascends, the power arm 3211 which is separated from the lever 321 is reset, the first ejector rod 31 descends, and one end of the second sealing part 12 descends.

As other schemes, an electromagnet can be designed in the trolley 1, the output end of the electromagnet is abutted against the lower end of the first ejector rod 31, and the first ejector rod 31 is driven to lift by the electromagnet.

As shown in fig. 5 and 7, the driving device 3 further includes a second ejector rod 34 slidably disposed in the second chute 26, and the furnace body 2 is provided with a second driving component 35 capable of contacting with the lower end of the second ejector rod 34 and driving the second ejector rod 34 to lift.

In this embodiment, the second driving component 35 includes an arc boss 351 fixed on the rear wall of the furnace 23, the trolley 1 is provided with a horizontal groove 352 communicated with the second chute 26, the second ejector rod 34 is in an L shape, the vertical section of the second ejector rod 34 is located in the second chute 26, the horizontal section of the second ejector rod 34 is located in the horizontal groove 352, and a certain gap is formed between the second ejector rod 34 and the second chute 26, and between the second ejector rod and the horizontal groove 352, so that the second ejector rod 34 can move.

The horizontal section of the second ejector rod 34 is provided with a rolling part 353 capable of contacting with the arc-shaped boss 351, when the trolley 1 is close to the rear wall of the hearth 23, the rolling part 353 on the second ejector rod 34 can roll upwards along the arc-shaped boss 351 to drive the second ejector rod 34 to lift up until the trolley 1 is positioned at the heating position of the hearth 23, and the second ejector rod 34 drives the other end of the second sealing part 12 to contact with the first sealing part 24.

As other schemes, an electromagnet can be designed in the trolley 1, the output end of the electromagnet is abutted against the lower end of the ejector rod II 34, and the ejector rod II 34 is driven to lift by the electromagnet.

The working principle of the application is as follows:

when the special steel is fed into the furnace, the special steel is placed on the trolley 1 and then moves to a heating position in the furnace chamber 23 through the trolley 1, when the trolley 1 is close to the rear wall of the furnace chamber 23, the rolling part 353 on the ejector rod II 34 can roll upwards along the arc-shaped boss 351 to drive the ejector rod II 34 to lift upwards, until the trolley 1 is positioned at the heating position of the furnace chamber 23, the ejector rod II 34 drives the other end of the sealing part II 12 to contact with the sealing part I24, then the furnace door 4 is closed, the furnace door 4 descends to enable the lower end of the furnace door 4 to contact with a power arm 3211 of the lever 321 to drive the lever 321 to swing, so that the resistance arm 3212 of the lever 321 contacts with the lower end of the ejector rod I31 to drive the ejector rod I31 to lift upwards to drive one end of the sealing part II 12 to form sealing with the sealing part I24;

when the furnace is discharged, the furnace door 4 rises, the power arm 3211 leaving the lever 321 is reset, the first ejector rod 31 descends, one end of the second sealing part 12 descends, the rolling part 353 on the second ejector rod 34 leaves the arc-shaped boss 351, the arc-shaped boss 351 does not support the rolling part 353, the second ejector rod 34 descends, the other end of the second sealing part 12 descends, the whole sealing part descends into the groove 13, and friction on the second sealing part 12 is avoided.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a trolley-type heat treatment furnace for special steels, its characterized in that includes trolley (1) and furnace body (2), furnace (23) and with the mouth that this furnace (23) are linked together have been seted up to furnace body (2), trolley (1) can pass the mouth business turn over furnace (23), the inner wall of furnace (23) is provided with sealing portion one (24) along the direction of movement of trolley (1), the upper surface activity of trolley (1) is provided with sealing portion two (12) along the direction of movement of trolley (1), trolley (1) still is provided with drive arrangement (3) that can drive sealing portion two (12) and go up and down, when trolley (1) are located the heating position of furnace (23), drive arrangement (3) can drive sealing portion two (12) and rise and make sealing portion two (12) and sealing portion one (24) paste.

2. The trolley type heat treatment furnace for special steels according to claim 1, wherein the upper surface of the trolley (1) is provided with a groove (13) along the moving direction of the trolley (1), the second sealing part (12) is movably arranged in the groove (13), and the height of the second sealing part (12) is smaller than the height of the groove (13).

3. The trolley type heat treatment furnace for special steels according to claim 2, wherein the trolley (1) is provided with a first chute (25) and a second chute (26) along the height direction of the trolley, the upper ends of the first chute (25) and the second chute (26) are both communicated with the groove (13), the driving device (3) comprises a first ejector rod (31) and a second ejector rod (34) which are respectively arranged in the first chute (25) and the second chute (26) in a sliding manner, the trolley (1) is provided with a first driving component (32) which can be contacted with the lower end of the first ejector rod (31) and drive the first ejector rod (31) to lift, and the furnace body (2) is provided with a second driving component (35) which can be contacted with the lower end of the second ejector rod (34) and drive the second ejector rod (34) to lift.

4. A trolley type heat treatment furnace for special steels according to claim 3, wherein the furnace body (2) is movably provided with a furnace door (4) along the height direction thereof, the furnace body (2) is provided with a lifting mechanism (5) capable of driving the furnace door (4) to lift, the first driving component (32) comprises a lever (321) pivoted on the trolley (1), the lower end of the furnace door (4) can be contacted with a power arm (3211) of the lever (321), and a resistance arm (3212) of the lever (321) can be contacted with the lower end of the first ejector rod (31).

5. The trolley type heat treatment furnace for special steels according to claim 4, wherein the trolley (1) is provided with a mounting cavity (33), the lower end of the first chute (25) is communicated with the mounting cavity (33), and the resistance arm (3212) of the lever (321) is positioned in the mounting cavity (33).

6. The trolley type heat treatment furnace for special steels according to claim 4, wherein a sliding rail is arranged at the furnace mouth of the furnace body (2) along the height direction of the furnace body (2), and a sliding block in sliding fit with the sliding rail is arranged on the side wall of the furnace door (4).

7. The trolley-type heat treatment furnace for special steels according to claim 3, 4, 5 or 6, wherein the second driving component (35) comprises an arc-shaped boss (351) fixed on the rear wall of the hearth (23), the trolley (1) is provided with a horizontal groove (352) communicated with the second sliding groove (26), the second ejector rod (34) is in an L shape, the vertical section of the second ejector rod (34) is positioned in the second sliding groove (26), the horizontal section of the second ejector rod (34) is positioned in the horizontal groove (352), the horizontal section of the second ejector rod (34) is provided with a rolling element (353) capable of being contacted with the arc-shaped boss (351), and when the trolley (1) approaches to the rear wall of the hearth (23), the rolling element (353) on the second ejector rod (34) can roll upwards along the arc-shaped boss (351).

8. The trolley type heat treatment furnace for special steels according to claim 7, wherein the second sealing part (12) comprises a metal body (121), an installation groove is formed in the upper surface of the metal body (121), a carbon felt (122) is embedded in the installation groove, and the thickness of the carbon felt (122) is larger than the depth of the installation groove.