Safety door locking mechanism and annealing heating equipment

Abstract

The utility model discloses a safety door lock control mechanism and annealing heating equipment, the safety door lock control mechanism comprises two door bodies, a door body limiting structure, a first plug-in locking structure and a second plug-in locking structure, the two door bodies are oppositely connected to a shell of the annealing heating equipment, and the two door bodies can close and open an opening of the shell of the annealing heating equipment; the door body limiting structure is connected with one of the door bodies, the door body limiting structure and a shell limiting structure of the annealing heating equipment can be mutually limited and released from limiting, and when the door body limiting structure and the shell limiting structure are mutually limited, one of the door bodies is limited to rotate in the opening direction; the first inserting locking structure and the second inserting locking structure are connected with the two door bodies respectively, the first inserting locking structure and the second inserting locking structure can be mutually locked and unlocked, and the two door bodies are limited to be opened when the first inserting locking structure and the second inserting locking structure are mutually locked. On one hand, the two door bodies cannot be opened at a small angle, and on the other hand, the first plug-in locking structure and the second plug-in locking structure are not prone to failure due to high temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of annealing heating, in particular to a safety door lock control mechanism and an annealing heating device. Background Art

[0002] The annealing heating device is provided with a protective door for protecting mechanical and electrical structural parts. The existing protective door is generally a double-door, including two door bodies. The two door bodies are adsorbed by high-temperature magnets or locked by ordinary connectors. The high-temperature magnets will demagnetize when working under high-temperature conditions for a long time, resulting in the failure of the protective door. The high temperature involved in the equipment cavity poses a risk of scalding personnel. Under the locked state, the ordinary connector can also manually push and pull the protective door to open the protective door at a certain angle, which has potential safety hazards. How to improve the safety of the protective door of the annealing heating device is a technical problem to be solved urgently in this field. Summary of the Utility Model

[0003] For this reason, the technical problem to be solved by the utility model is to provide a safety door lock control mechanism and an annealing heating device that improve the safety of the protective door.

[0004] To solve the above technical problem, the utility model provides a safety door lock control mechanism, including two door bodies, a door body limit structure, a first plug-in locking structure, and a second plug-in locking structure;

[0005] The two door bodies are connected to the shell of the annealing heating device in a pair-opening manner, and the two door bodies can close and open the opening of the shell of the annealing heating device;

[0006] The door body limit structure is connected to one of the door bodies. The door body limit structure and the shell limit structure of the annealing heating device can be mutually limited and released from limitation. When the door body limit structure and the shell limit structure are mutually limited, one of the door bodies is restricted from rotating in the opening direction. When the door body limit structure and the shell limit structure are released from limitation, one of the door bodies is not restricted from rotating in the opening direction;

[0007] The first plug-in locking structure and the second plug-in locking structure are respectively connected to the two door bodies. The first plug-in locking structure and the second plug-in locking structure can be mutually locked and released from locking. When the first plug-in locking structure and the second plug-in locking structure are mutually locked, the two door bodies are restricted from opening. After the first plug-in locking structure and the second plug-in locking structure are released from locking, the two door bodies are not restricted from opening.

[0008] Furthermore, the door body limit structure is detachably clamped on the door body.

[0009] Further, the door body includes a door panel and a first clamping edge. The door panel has an inner surface facing the inside of the annealing heating device. The cross-section of the first clamping edge is L-shaped, including a clamping portion A and a clamping portion B that form an angle with each other. The clamping portion A is connected to the inner surface side of the door panel and is close to one edge of the door panel. The door panel and the first clamping edge enclose a first clamping groove, and the notch of the first clamping groove faces the center of the door panel;

[0010] The door body limiting structure includes a limiting plate and a second clamping edge. The cross-section of the second clamping edge is L-shaped, including a clamping portion C and a clamping portion D that form an angle with each other. The clamping portion C is on one surface side of the limiting plate and is close to one end of the limiting plate. The limiting plate and the second clamping edge enclose a second clamping groove, and the notch of the second clamping groove faces the other end of the limiting plate;

[0011] When the housing limiting structure and the door body limiting structure are mutually limited, the first clamping edge and the second clamping edge are mutually clamped. The clamping portion B is inserted into the second clamping groove, and the clamping portion D is inserted into the first clamping groove.

[0012] Further, the door body is a sheet metal part, and the edge of the door panel is bent in an n-shape towards its inner surface side to form the first clamping edge.

[0013] Further, the door body limiting structure is integrally formed.

[0014] Further, the housing of the annealing heating device includes a frame and a wall panel. The frame includes two first side frames and a second side frame. The two first side frames are parallel to each other, and the second side frame is vertically connected between the first ends of the two first side frames. The two door bodies are respectively connected to the two first side frames, and the second side frame is the housing limiting structure.

[0015] Further, the opening of the housing of the annealing heating device faces sideways. The two first side frames extend in the vertical direction. The door bodies are erected, the side edges of the door bodies are connected to the first side frames, and the door body limiting structure is close to the lower edge of the door body.

[0016] Further, the frame further includes a third side frame, and the third side frame is vertically connected between the second ends of the two first side frames.

[0017] Further, the first plug-in locking structure and the second plug-in locking structure form an electromagnetic lock safety door switch.

[0018] The present utility model further provides an annealing heating device, including a housing and the above-mentioned safety door lock control mechanism. The housing is provided with an opening, and the safety door lock control mechanism is installed at the opening of the housing and is used to open and close the housing opening.

[0019] The above technical solution of the utility model has the following advantages compared with the prior art:

[0020] 1) The safety door lock control mechanism and annealing heating device described in the utility model limit each other through the door body limiting structure and the shell limiting structure so that one of the door bodies is restricted from rotating in the opening direction, and the first plug-in locking structure and the second plug-in locking structure are mutually locked so that the two door bodies are locked to each other and cannot be opened. On the one hand, the two door bodies cannot be opened at a small angle, and on the other hand, the first plug-in locking structure and the second plug-in locking structure are not easy to fail due to high temperature;

[0021] 2) The safety door lock control mechanism and annealing heating equipment described in the utility model, the door body limiting structure is connected to the door body by clamping, does not damage the structure of the door body and is relatively simple and convenient to install;

[0022] 3) The safety door lock control mechanism and annealing heating device described in the utility model, the door body is provided with a first bending edge, the door body limiting structure is provided with a second bending edge, the first bending edge and the second bending edge can be mutually clamped to achieve a detachable clamping;

[0023] 4) The safety door lock control mechanism and annealing heating device described in the utility model, the door body is a sheet metal part, and the first bending edge is formed by bending, which is simple to manufacture and can enhance the mechanical properties of the door body;

[0024] 5) The safety door lock control mechanism and annealing heating equipment described in the utility model have a door body limit structure that is integrally formed, is simple to manufacture, and has high structural strength;

[0025] 6) The safety door lock control mechanism and annealing and heating equipment described in the utility model, the housing frame of the annealing and heating equipment includes a first frame and a second frame, the first frame is used to connect the door body, and the second frame is used as a door body limiting structure, which can be used as a door frame and frame, and can also be used as a housing limiting structure, and there is no need to specially make a door body limiting structure;

[0026] 7) The safety door lock control mechanism and annealing heating equipment described in the utility model have the second slot of the door body limiting structure facing downward, and the door body limiting structure is not easy to separate from the shell limiting structure, ensuring that the two are reliably connected together;

[0027] 8) The safety door lock control mechanism and annealing and heating equipment described in the utility model, the housing frame of the annealing and heating equipment also includes a third frame, which is surrounded by the first frame and the second frame to form a rectangular frame, and serves as a housing frame;

[0028] 9) The annealing heating equipment and its safety door lock control described in the utility model, the first plug-in locking structure and the second plug-in locking structure constitute an electromagnetic lock safety door switch, and its safety is effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to the specific embodiments of the present utility model in combination with the accompanying drawings.

[0030] Figure 1 It is a schematic structural diagram of the safety door lock control mechanism disclosed in the present utility model;

[0031] Figure 2 It is a schematic structural diagram of the door body disclosed in the present utility model;

[0032] Figure 3 It is a schematic diagram of the door body limit structure disclosed in the present utility model;

[0033] Figure 4 It is a schematic connection diagram of the housing frame of the annealing heating device and the safety door lock control mechanism disclosed in the present utility model;

[0034] Figure 5 It is Figure 4 a partial enlarged view at position A in

[0035] Figure 6 It is an external view schematic diagram of the annealing heating device disclosed in the present utility model.

[0036] Explanation of the reference numerals in the specification drawings:

[0037] 1. Safety door lock control mechanism; 11. Door body; 111. Door panel; 112. First clamping edge; 113. First clamping groove; 12. Door body limit structure; 121. Limit plate; 122. Second clamping edge; 123. Second clamping groove; 13. First plug-in locking structure; 14. Second plug-in locking structure;

[0038] 21. First frame; 22. Second frame; 23. Third frame; 24. Wall panel. Specific embodiments

[0039] The following further describes the present utility model in combination with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments given are not used as a limitation to the present utility model.

[0040] Embodiment 1

[0041] Refer to Figures 1 to 5 as shown, an embodiment of the safety door lock control mechanism in the present utility model.

[0042] The above-mentioned safety door lock control mechanism includes two door bodies 11, a door body limit structure 12, a first plug-in locking structure 13, and a second plug-in locking structure 14;

[0043] The above two door bodies 11 are connected to the housing of the annealing heating device in a pair-opening manner, and the above two door bodies 11 can close and open the opening of the housing of the annealing heating device;

[0044] The above door body limiting structure 12 is connected to one of the above door bodies 11. The above door body limiting structure 12 and the housing limiting structure of the annealing heating device can limit and release the limit from each other. When the above door body limiting structure 12 and the above housing limiting structure limit each other, it restricts one of the above door bodies 11 from rotating in the opening direction. When the above door body limiting structure 12 and the above housing limiting structure release the limit, it does not restrict one of the above door bodies 11 from rotating in the opening direction;

[0045] The above first plug-in locking structure 13 and the above second plug-in locking structure 14 are respectively connected to the above two door bodies 11. The above first plug-in locking structure 13 and the above second plug-in locking structure 14 can lock and unlock each other. When the above first plug-in locking structure 13 and the above second plug-in locking structure 14 lock each other, it restricts the above two door bodies 11 from opening. After the above first plug-in locking structure 13 and the above second plug-in locking structure 14 are unlocked, it does not restrict the above two door bodies 11 from opening.

[0046] Each of the above-mentioned door bodies 11 has a first door body edge and a second door body edge relative to each other. The first door body edge of each of the above-mentioned door bodies 11 is hingedly connected to the shell of the annealing and heating equipment. The hinge axes of the two door bodies 11 are parallel to each other. When the two door bodies 11 close the shell opening of the annealing and heating equipment, the two door bodies 11 are roughly in the same plane. The second door body edges of the two door bodies 11 are butted together. When the two door bodies 11 open the shell opening of the annealing and heating equipment, the two door bodies 11 are spaced a certain distance apart and form a certain angle or are parallel to each other. The mutual limitation of the above-mentioned shell limiting structure and the door body limiting structure 12 means that the shell limiting structure blocks the door body limiting structure 12 from moving in the direction of opening the door body 11. The release of the above-mentioned shell limiting structure and the door body limiting structure 12 means that the shell limiting structure does not block the door body limiting structure 12 from moving in the direction of opening the door body 11. The mutual locking of the first plug-in locking structure 13 and the second plug-in locking structure 14 refers to the mutual concave-convex fit of the two. In order to make the first plug-in locking structure 13 and the second plug-in locking structure 14 easier to plug into each other, the two are generally clearance-matched, which results in that the relative movement of the first plug-in locking structure 13 and the second plug-in locking structure 14 cannot be completely restricted after being plugged in and locked to each other, and they still have a certain margin of movement. Based on the above problems, the mutual limitation of the shell limiting structure and the door body limiting structure 12 restricts one of the door bodies 11 from rotating in the opening direction, and the mutual locking of the first plug-in locking structure 13 and the second plug-in locking structure 14 makes the two door bodies 11 mutually locked and unable to open. On the one hand, the two door bodies 11 cannot be opened at a small angle, and on the other hand, the first plug-in locking structure 13 and the second plug-in locking structure 14 are not easy to fail due to high temperature.

[0047] In this embodiment, the door body limiting structure 12 is detachably connected to the door body 11 .

[0048] The door body limiting structure 12 and the door body 11 are fixed together by structures such as tenons and protrusions therebetween, have strong holding force, can be disassembled during maintenance, and will not damage the door body 11 and the door body limiting structure 12, and the door body 11 and the door body limiting structure 12 are relatively simple and convenient to be connected to each other.

[0049] In this embodiment, the door body 11 includes a door panel 111 and a first clamping edge 112. The door panel 111 has an inner surface facing the inside of the annealing and heating device. The cross section of the first clamping edge 112 is L-shaped, including a clamping portion A and a clamping portion B that form an angle with each other. The clamping portion A is connected to the inner surface side of the door panel 111 and is close to an edge of the door panel 111. The door panel 111 and the first clamping edge enclose a first clamping groove 113, and the notch of the first clamping groove 113 faces the center of the door panel 111.

[0050] The above-mentioned door body limiting structure 12 includes a limiting plate 121 and a second clamping edge 122. The cross-section of the second clamping edge 122 is L-shaped, including a clamping part C and a clamping part D that form an angle with each other. The clamping part C is on one surface side of the limiting plate 121 and close to one end of the limiting plate 121. The limiting plate 121 and the second clamping edge 122 enclose a second clamping groove 123, and the notch of the second clamping groove 123 faces the other end of the limiting plate 121;

[0051] When the above-mentioned housing limiting structure and the above-mentioned door body limiting structure 12 are mutually limited, the first clamping edge 112 and the second clamping edge 122 are mutually clamped. The clamping part B is inserted into the second clamping groove 123, and the clamping part D is inserted into the first clamping groove 113.

[0052] One edge of the above-mentioned clamping part A is a fixed edge, and one edge of the above-mentioned clamping part B is a free edge. The fixed edge of the clamping part A and the free edge of the clamping part B face two mutually perpendicular directions. The fixed edge of the clamping part A is connected to the edge of the door panel 111, and the free edge of the clamping part B faces the side where the center of the door panel 111 is located. One edge of the above-mentioned clamping part C is a fixed edge, and one edge of the above-mentioned clamping part D is a free edge. The fixed edge of the clamping part C and the free edge of the clamping part D face two mutually perpendicular directions. The fixed edge of the clamping part C is connected to one end of the limiting plate 121, and the free edge of the clamping part B faces the other end of the limiting plate 121. The door body 11 is provided with a first clamping edge 112, and the door body limiting structure 12 is provided with a second clamping edge 122. The first clamping edge 112 and the second clamping edge 122 can be mutually clamped to achieve detachable clamping.

[0053] In this embodiment, the above-mentioned door body 11 is a sheet metal part, and the edge of the above-mentioned door panel 111 is bent in an n-shape toward its inner surface side to form the above-mentioned first clamping edge 112.

[0054] Sheet metal is a comprehensive cold working process for metal sheets. Its remarkable feature is that the thickness of the same part is consistent. The products processed by the sheet metal process are called sheet metal parts. Sheet metal parts have the characteristics of light weight, high strength, electrical conductivity (can be used for electromagnetic shielding), low cost, and good mass production performance. The above-mentioned door body 11 is a sheet metal part, and the first clamping edges 112 are arranged on all its edges, which can not only achieve clamping with the second clamping edge 122, but also be simple to manufacture and can enhance the mechanical performance of the door body 11.

[0055] In this embodiment, the above-mentioned door body limiting structure 12 is integrally formed.

[0056] The above-mentioned door body limiting structure 12 is integrally formed. It can be formed by casting or processed from a single piece of material. The integrally formed door body limiting structure 12 has better mechanical performance.

[0057] In this embodiment, the housing of the annealing heating device includes a frame. The frame includes two first side frames 21 and a second side frame 22. The two first side frames 21 are parallel to each other. The second side frame 22 is vertically connected between the first ends of the two first side frames 21. The two door bodies 11 are respectively connected to the two first side frames 21. The second side frame 22 is the limiting structure of the housing.

[0058] Both the first side frame 21 and the second side frame 22 are strip-shaped side frames. Each first side frame 21 has a first end and a second end facing away from each other. The first ends of the two first side frames 21 face the same direction, and the second ends of the two first side frames 21 face the same direction. The first side frame 21 is used to connect the door body 11. The second side frame 22 serves as the door body limiting structure, which can not only serve as the door frame and the frame, but also serve as the housing limiting structure, eliminating the need to specially manufacture the door body limiting structure.

[0059] Further, the opening of the housing of the annealing heating device faces sideways. The two first side frames 21 extend in the vertical direction. The door body 11 is erected. The side edge of the door body 11 is connected to the first side frame 21. The door body limiting structure 12 is close to the lower edge of the door body 11.

[0060] The notch of the first card slot 113 faces upward. The notch direction of the second card slot 123 is such that the second clamping edge 122 of the door body limiting structure 12 is hung on the first clamping edge 112 of the door body 11. The door body limiting structure 12 is close to the lower edge of the door body 11. The notch of the second card slot 123 of the door body limiting structure 12 faces downward, making it not easy to disengage from the first clamping edge 112.

[0061] Further, the frame further includes a third side frame 23. The third side frame 23 is vertically connected between the second ends of the two first side frames 21.

[0062] The third side frame 23 is long and strip-shaped, supporting and connecting the two first side frames 21. By providing the third side frame 23, it encloses a rectangular frame with the first side frame 21 and the second side frame 22, serving as a part of the housing frame of the annealing heating device.

[0063] In this embodiment, the first plug-in locking structure 13 and the second plug-in locking structure 14 form an electromagnetic lock safety door switch.

[0064] The above electromagnetic lock safety door switch is a safety device used to monitor and control the opening and closing state of the door to ensure the safety of the workplace. The working principle of the electromagnetic lock safety door switch mainly relies on built-in sensors that can detect the state of the door in real time. When the door is closed, the sensors immediately capture this state change and send a locking signal to the control circuit. The function of this signal is to inform the control circuit that the door is in the locked state and trigger the electromagnetic lock to perform the locking action. When the door needs to be opened, the switch triggers the control circuit to send an unlocking signal. At this time, the control circuit stops supplying power to the electromagnetic lock, the magnetic field disappears, the iron core loses its attraction, and the door can be opened smoothly. In addition, the safety door lock switch also has a series of safety protection functions, such as protective cover monitoring, detection of the closing speed of the door, etc. These functions together improve the safety and reliability of the door lock. The above first plug-in locking structure 13 and second plug-in locking structure 14 form an electromagnetic lock safety door switch, which can effectively prevent accidents from occurring.

[0065] See Figure 6 shown, an embodiment of an annealing heating device in the present utility model.

[0066] The above annealing heating device includes a housing and a safety door lock control mechanism 1. The above housing is provided with an opening, and the above safety door lock control mechanism 1 is installed at the opening of the above housing and is used to open and close the opening of the above housing.

[0067] The above housing includes a frame and a wall plate 24 connected to the above frame. The above housing and the safety door lock control mechanism 1 enclose a sealed space for annealing heating.

[0068] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present utility model.

Claims

1. A safety door lock control mechanism, characterized in that: It includes two door bodies, a door body limiting structure, a first plug-in locking structure and a second plug-in locking structure; The two door bodies are arranged to be opposite to each other and connected to the shell of the annealing and heating equipment, and the two door bodies can close and open the shell opening of the annealing and heating equipment; The door body limiting structure is connected to one of the door bodies, and the door body limiting structure and the shell limiting structure of the annealing heating device can limit and release the limit to each other. When the door body limiting structure and the shell limiting structure limit each other, one of the door bodies is limited to rotate in the opening direction. When the door body limiting structure and the shell limiting structure are released from the limit, one of the door bodies is not limited to rotate in the opening direction. The first plug-in locking structure and the second plug-in locking structure are respectively connected to the two door bodies, and the first plug-in locking structure and the second plug-in locking structure can be locked and unlocked with each other. When the first plug-in locking structure and the second plug-in locking structure are locked with each other, they restrict the opening of the two door bodies, and when the first plug-in locking structure and the second plug-in locking structure are unlocked, they do not restrict the opening of the two door bodies.

2. The safety door lock control mechanism according to claim 1, characterized in that: The door body limiting structure is detachably connected to the door body.

3. The safety door lock control mechanism according to claim 2, characterized in that: The door body comprises a door panel and a first clamping edge, the door panel has an inner surface facing the inside of the annealing and heating device, the first clamping edge has an L-shaped cross section, and comprises a clamping portion A and a clamping portion B which form an angle with each other, the clamping portion A is connected to the inner surface side of the door panel and close to an edge of the door panel, the door panel and the first clamping edge enclose a first clamping groove, and the notch of the first clamping groove faces the center of the door panel; The door body limiting structure includes a limiting plate and a second clamping edge, the cross section of the second clamping edge is L-shaped, including a clamping portion C and a clamping portion D that form an angle with each other, the clamping portion C is on one surface side of the limiting plate and close to one end of the limiting plate, the limiting plate and the second clamping edge enclose a second clamping groove, and the notch of the second clamping groove faces the other end of the limiting plate; When the shell limiting structure and the door body limiting structure are mutually limited, the first clamping edge and the second clamping edge are mutually clamped, the clamping portion B is inserted into the second clamping slot, and the clamping portion D is inserted into the first clamping slot.

4. The safety door lock control mechanism according to claim 3, characterized in that: The door body is a sheet metal part, and the edge of the door panel is bent in an n-shape toward its inner surface to form the first clamping edge.

5. The safety door lock control mechanism according to claim 3, characterized in that: The door body limiting structure is integrally formed.

6. The safety door lock control mechanism according to claim 1, characterized in that: The shell of the annealing and heating equipment includes a frame and a wall panel, the frame includes two first frames and a second frame, the two first frames are parallel to each other, the second frame is vertically connected between the first ends of the two first frames, the two door bodies are respectively connected to the two first frames, and the second frame is the shell limiting structure.

7. The safety door lock control mechanism according to claim 6, characterized in that: The shell opening of the annealing heating equipment faces sideways, the two first frames extend in the vertical direction, the door body is vertically arranged, the side edge of the door body is connected to the first frame, and the door body limiting structure is close to the lower edge of the door body.

8. The safety door lock control mechanism according to claim 6, characterized in that: The frame further includes a third frame, and the third frame is vertically connected between the second ends of the two first frames.

9. The safety door lock control mechanism according to claim 1, characterized in that: The first plug-in locking structure and the second plug-in locking structure constitute an electromagnetic lock safety door switch.

10. An annealing and heating device, comprising a housing and the safety door locking mechanism according to any one of claims 1 to 9, wherein the housing is provided with an opening, and the safety door locking mechanism is installed at the housing opening and is used to open and close the housing opening.

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