CN218666170U

CN218666170U - Safety interlocking mechanism and vacuum gas quenching furnace applying same

Info

Publication number: CN218666170U
Application number: CN202222465607.XU
Authority: CN
Inventors: 孔祥亮
Original assignee: Beijng Naura Vacuum Technology Co Ltd
Current assignee: Beijng Naura Vacuum Technology Co Ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-03-21
Anticipated expiration: 2032-09-16

Abstract

The application discloses a safety interlocking mechanism and a vacuum gas quenching furnace using the same. A safety interlocking mechanism comprises a driving source, wherein the driving source is arranged on a furnace body, and an output shaft of the driving source is provided with a locking piece which is driven to move by the driving source so as to lock a door clamping ring. The safety of the furnace door of the vacuum gas quenching furnace can be improved, and the situation that the safety is influenced due to misoperation is reduced.

Description

Safety interlocking mechanism and vacuum gas quenching furnace applying same

Technical Field

The application relates to the technical field of vacuum gas quenching furnaces, in particular to a safety interlocking mechanism and a vacuum gas quenching furnace applying the same.

Background

The vacuum gas quenching furnace is a vacuum heat treatment device, is suitable for vacuum bright gas quenching of alloy material parts such as high-speed steel, stainless steel, alloy steel, titanium alloy and the like, and can also be used for vacuum sintering and vacuum brazing of other materials such as powder metallurgy, copper alloy and the like. The gas pressure in the furnace body of the vacuum gas quenching furnace is 0.1-0.5 MPa, some vacuum gas quenching furnaces up to 2 MPa or even 4 MPa are put into operation, and the workpiece is cooled under high-speed airflow.

Referring to fig. 1, a furnace body 22 of the vacuum gas quenching furnace is provided with a furnace door 23 capable of being opened and closed, and a door snap ring 25 is rotatably provided on the furnace body 22. The vacuum gas quenching furnace also comprises a driving air cylinder 26, the driving air cylinder 26 can enable the door clamping ring 25 to rotate for a certain angle, and the door clamping ring 25 can be matched with a structure on the furnace door 23 after rotating for a certain angle, so that the furnace door 23 can be opened or closed.

However, the driving cylinder of the vacuum gas quenching furnace may work due to misoperation, which may cause the possibility of furnace body sealing failure, and the vacuum gas quenching furnace has high-pressure gas therein, which is easy to cause potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In order to improve the safety of the furnace door of the vacuum gas quenching furnace and reduce the situation that the safety is influenced due to misoperation, the application provides a safety interlocking mechanism and a vacuum gas quenching furnace using the same.

In a first aspect, the present application provides a safety interlock mechanism, which adopts the following technical scheme: a safety interlocking mechanism comprises a driving source, wherein the driving source is arranged on a furnace body, and an output shaft of the driving source is provided with a locking piece which is driven to move by the driving source so as to lock a door clamping ring.

Through adopting above-mentioned technical scheme, when the furnace gate rotated to the closed condition, the driving source drive locking piece removed and made the locking piece lock the door snap ring to can reduce the condition that makes the furnace gate open because of the maloperation.

Optionally, the furnace body further comprises a supporting seat fixedly or detachably connected to the outer wall of the furnace body, and the driving source is connected with the supporting seat.

Through adopting above-mentioned technical scheme, supporting seat and furnace body coupling to on being fixed in the supporting seat with the driving source installation, the supporting seat can play the supporting role to the driving source, and the driving source drive locking piece of being convenient for removes with the locking door snap ring.

Optionally, the door snap ring is provided with a safety positioning block, the door snap ring is provided with a plug hole, and the locking piece comprises a pin shaft for being inserted into the safety positioning block.

Through adopting above-mentioned technical scheme, set up the safety locking piece on the door snap ring, be in the closed condition when the furnace gate, the round pin axle can insert in the safety positioning piece to make the round pin axle lock the position of safety positioning piece, realized the locking of door snap ring promptly, can reduce the condition that causes the furnace gate to open because of the maloperation.

Optionally, the pin shaft is in threaded connection with an output shaft of the driving source.

By adopting the technical scheme, as the pin shaft is in threaded connection with the output shaft of the driving source, the relative position of the pin shaft from the safety positioning block can be adjusted, namely the depth of the pin shaft inserted into the safety positioning block can be adjusted, and the locking degree of the pin shaft is adjusted; meanwhile, the pin shaft can be conveniently replaced when damaged.

Optionally, the locking member comprises a friction plate for abutment with the door collar.

Through adopting above-mentioned technical scheme, when the furnace gate was in the closed condition, the driving source drive friction plate removed and made friction plate and door snap ring butt, under the effect of frictional force, realized the locking to door snap ring.

Optionally, a friction plate for abutting against the friction plate is arranged on the door snap ring.

Through adopting above-mentioned technical scheme, the friction disc sets up in the friction disc, and when the furnace gate was in the closed condition, the driving source drove friction plate and friction disc butt, relied on the frictional force between friction plate and the friction disc to realize the locking of door snap ring.

Optionally, the friction plate is detachably connected to an output shaft of the driving source, and the friction plate is detachably connected to the door retaining ring.

Through adopting above-mentioned technical scheme, the condition of consume can appear in the use with the friction disc in the friction plate, and the friction plate all can be dismantled with the friction disc, maintenance and nursing in the later stage use of being convenient for.

In a second aspect, the application also provides a vacuum gas quenching furnace, which comprises the safety interlocking mechanism.

By adopting the technical scheme, after the vacuum quenching furnace adopts the safety interlocking mechanism, the door snap ring can be locked in the closing state of the furnace door, namely the furnace door is protected in the closing state, and the danger caused by misoperation is reduced.

In summary, the present application includes at least one of the following advantages:

1. when the oven door rotates to a closed state, the driving source drives the locking piece to move and enables the locking piece to lock the door clamping ring, so that the condition that the oven door is opened due to misoperation can be reduced;

2. when the furnace door is in a closed state, the pin shaft can be inserted into the safety positioning block, so that the pin shaft locks the position of the safety positioning block, namely the locking of the door snap ring is realized;

3. when the furnace door is in a closed state, the driving source drives the friction plate to abut against the friction plate, and the locking of the door snap ring is realized by means of the friction force between the friction plate and the friction plate.

Drawings

FIG. 1 is an overall schematic view of a vacuum gas quenching furnace in the related art;

FIG. 2 is an overall schematic view of a safety interlock mechanism and a vacuum gas quenching furnace according to example 1 of the present application;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is an exploded view of the safety interlock mechanism of embodiment 1 of the present application;

FIG. 5 is an overall schematic view of a safety interlock mechanism and a vacuum gas quenching furnace according to example 2 of the present application;

fig. 6 is an exploded view of the safety interlock mechanism of embodiment 2 of the present application.

Description of reference numerals: 1. a safety interlock mechanism; 11. a drive source; 12. a supporting seat; 13. a locking member; 131. a pin shaft; 132. a friction plate; 14. a safety positioning block; 141. inserting holes; 15. a friction plate; 2. a vacuum gas quenching furnace; 21. a fixed seat; 22. a furnace body; 23. a furnace door; 24. a cantilever; 25. a door snap ring; 26. a driving cylinder; 27. a first bump; 28. and a second bump.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Referring to fig. 1, the vacuum gas quenching furnace 2 includes a fixed base 21, a furnace body 22 and a furnace door 23. Furnace body 22 is fixed connection in fixing base 21 top, and furnace body 22 is the jar body that has the cavity, and the work piece is located furnace body 22 and processes. The furnace body 22 is fixedly connected with a cantilever 24, the cantilever 24 is fixedly connected with a furnace door 23, and the furnace door 23 can rotate around a rotating shaft of the cantilever 24, so that the furnace door 23 can be opened or closed.

Referring to fig. 1, a door snap ring 25 is sleeved on the furnace body 22, and the door snap ring 25 is rotatably connected with the furnace body 22. A driving cylinder 26 is fixedly connected to the fixed seat 21, and an output shaft of the driving cylinder 26 is fixedly connected with the door snap ring 25. When the cylinder 26 is driven to extend or contract, the door retaining ring 25 can rotate in the forward or reverse direction around the axis of the furnace body 22.

Referring to fig. 1, the door snap ring 25 is integrally formed with a plurality of first protrusions 27, and the first protrusions 27 are uniformly spaced around the door snap ring 25. The oven door 23 is integrally formed with second protrusions 28, the second protrusions 28 are also uniformly spaced around the door snap ring 25, and the first protrusions 27 correspond to the second protrusions 28 one by one. When the driving cylinder 26 is operated to make the first lug 27 and the second lug 28 overlap in the axial direction of the furnace body 22, the furnace door 23 is in a closed state; when the driving air cylinder 26 is controlled to work reversely, the first lug 27 can be positioned between the adjacent second lugs 28, and the oven door 23 is in an openable state.

Example 1:

the embodiment 1 of the application discloses a safety interlocking mechanism.

Referring to fig. 2 and 3, a safety interlock mechanism includes a driving source 11 and a support base 12. In the present embodiment, the driving source 11 is an air cylinder, but in other embodiments of the present application, the driving source 11 may be an electric push rod, a hydraulic cylinder, or the like. The supporting seat 12 is fixedly connected to the side wall of the furnace body 22 by bolts or welding, and the cylinder is inserted into the supporting seat 12 and fixedly connected with the supporting seat 12.

Referring to fig. 3, a safety positioning block 14 is fixedly connected to the door snap ring 25, the safety positioning block 14 can rotate along with the door snap ring 25, and the safety positioning block 14 is provided with an insertion hole 141.

Referring to fig. 4, the output shaft of the cylinder is provided with a locking member 13, the locking member 13 is a pin 131, and the output shaft of the cylinder is threadedly coupled to the pin 131. When the oven door 23 is in a closed state, the insertion hole 141 is coaxial with the pin shaft 131, and the pin shaft 131 can be inserted into the insertion hole 141 and is in clamping fit with the insertion hole 141. Because the output shaft threaded connection of round pin axle 131 and cylinder, can adjust the distance that stretches out of round pin axle 131 for the cylinder output shaft to adjust the degree of depth that round pin axle 131 inserts in the spliced eye 141, and then can adjust the stability that round pin axle 131 inserts in the spliced eye 141.

In other embodiments of the present application, the pin 131 and the output shaft may be fixed by bolts, welding, or the like, and the depth of the pin 131 inserted into the insertion hole 141 is adjusted by selecting a servo cylinder or a motor screw.

In another embodiment of the present application, if the door snap ring 25 is thick enough, the door snap ring 25 may be provided with the insertion hole 141 directly on the door snap ring 25 without providing the safety positioning block 14.

When the oven door 23 is in a closed state, the air cylinder drives the pin shaft 131 to extend, so that the pin shaft 131 is inserted into the insertion hole 141; when the oven door 23 needs to be opened, the air cylinder driving pin shaft 131 is reset, so that the pin shaft 131 is separated from the inserting hole 141, and the oven door 23 can be normally opened.

The implementation principle of the safety interlocking mechanism in embodiment 1 of the application is as follows: when the oven door 23 is in a closed state, the control cylinder enables the pin shaft 131 to be inserted into the inserting hole 141, so that the condition that the oven door 23 is opened due to misoperation can be reduced; when the oven door 23 needs to be opened, the control cylinder resets the pin shaft 131, so that the oven door 23 can be normally opened.

Example 2:

the embodiment 2 of the application discloses a safety interlocking mechanism.

Referring to fig. 5 and 6, embodiment 2 of the present application differs from embodiment 1 in that: the locking member 13 is a friction plate 132, and the friction plate 132 is detachably connected to the output shaft of the driving source 11, and specifically, the friction plate 132 is screwed with the output shaft of the driving source 11. The door snap ring 25 is detachably connected with a friction plate 15 through a screw.

In this embodiment, the friction plate 132 and the friction plate 15 may be made of the material of the automobile brake pad, that is, the friction plate 132 and the friction plate 15 both include a steel plate layer and a heat insulation layer, the steel plate layer and the heat insulation layer are bonded, and the steel plate layer of the friction plate 132 and the steel plate layer of the friction plate 15 are disposed opposite to each other.

The implementation principle of the safety interlocking mechanism in embodiment 2 of the application is as follows: when the oven door 23 is in a closed state, the driving source 11 is controlled to enable the friction plate 132 to move and be tightly abutted against the friction plate 15, and the rotation of the door clamping ring 25 is limited under the action of the friction force; when the oven door 23 needs to be opened, the driving source 11 is controlled to separate the friction plate 132 from the friction plate 15, and the oven door 23 can be normally opened.

Example 3:

embodiment 3 of the present application discloses a vacuum gas quenching furnace to which the safety interlock mechanism of embodiment 1 is applied.

Referring to fig. 2 and 3, the support base 12 is mounted on the furnace body 22, and the safety positioning block 14 is mounted on the door snap ring 25 in a state that the door 23 is closed, and the pin shaft 131 can be inserted into the insertion hole 141.

Example 4:

embodiment 4 of the present application further discloses a vacuum gas quenching furnace to which the safety interlock mechanism of embodiment 2 is applied.

Referring to fig. 5 and 6, the supporter 12 is mounted on the furnace body 22, and the friction plate 15 is mounted on the door snap ring 25 in a state where the furnace door 23 is closed, and the friction plate 132 can abut against the friction plate 15.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A safety interlock mechanism, comprising: the furnace comprises a driving source (11), wherein the driving source (11) is arranged on a furnace body (22), and an output shaft of the driving source (11) is provided with a locking piece (13) which is driven to move by the driving source (11) so as to lock a door clamping ring (25);

the door clamping ring (25) is provided with a safety positioning block (14), the door clamping ring (25) is provided with an inserting hole (141), and the locking piece (13) comprises a pin shaft (131) used for being inserted into the safety positioning block (14);

the locking member (13) comprises a friction plate (132) for abutting against the door snap ring (25); the door snap ring (25) is provided with a friction plate (15) which is used for being abutted against the friction plate (132).

2. A safety interlock as claimed in claim 1, wherein: still including fixed or detachable connect in the supporting seat (12) of furnace body (22) outer wall, driving source (11) with supporting seat (12) are connected.

3. A safety interlock as claimed in claim 1, wherein: the pin shaft (131) is in threaded connection with an output shaft of the driving source (11).

4. A safety interlock as claimed in claim 1, wherein: the friction plate (132) is detachably connected with an output shaft of the driving source (11), and the friction plate (15) is detachably connected with the door snap ring (25).

5. A vacuum gas quenching furnace is characterized in that: comprising a safety interlock mechanism as claimed in any one of claims 1 to 4.