A semi-automatic furnace door safety latch

Abstract

This utility model provides a semi-automatic furnace door safety latch, relating to the field of furnace door safety latches. It includes a vacuum gas quenching furnace door and a door frame. One side of the vacuum gas quenching furnace door is provided with a pin hole mechanism, which includes a pin hole block, a safety pin hole, and an inclined block. One side of the door frame is provided with a latch mechanism, which includes a pin sleeve, a hollow groove, a horizontal groove, a vertical groove, a pin rod, a groove, an extension rod, an auxiliary ring, and a ball bearing. In this utility model, when the vacuum gas quenching furnace door is pushed towards the door frame, the inclined block presses against the conical surface at the bottom of the pin rod, causing the pin rod to move upwards. Simultaneously, the extension rod moves upwards along the inner wall of the vertical groove. As the pin hole block moves, the safety pin hole moves to the bottom of the pin rod. Due to the weight of the pin rod itself, the pin rod enters the safety pin hole, facilitating its entry without requiring two people to operate it.

Description

Technical Field

[0001] This utility model relates to the field of furnace door safety latch technology, and in particular to a semi-automatic furnace door safety latch. Background Technology

[0002] The vacuum quenching furnace door is very heavy due to the high temperature and pressure requirements inside the furnace. When the furnace door is fully opened, it is under unilateral force and is prone to automatic displacement. A safety pin needs to be inserted when entering or leaving the furnace.

[0003] In existing technologies, conventional furnace door latches need to be inserted manually, requiring one person to hold the furnace door while another inserts the safety pin, which is inconvenient to use and operate. Utility Model Content

[0004] The purpose of this utility model is to provide a semi-automatic furnace door safety latch to solve the problem mentioned in the background art that conventional furnace door latches require manual insertion, with one person holding the furnace door and another person inserting the safety pin, which is inconvenient to use and operate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: including a vacuum quenching furnace door and a door frame, wherein a pin hole mechanism is provided on one side of the vacuum quenching furnace door, the pin hole mechanism including an insertion block, a safety insertion hole and an inclined block, and a latching mechanism is provided on one side of the door frame, the latching mechanism including a latch sleeve, a hollow groove, a horizontal groove, a vertical groove, a latch rod, a groove, an extension rod, an auxiliary ring and a ball bearing.

[0006] In a preferred embodiment, one side of the vacuum quenching furnace door is fixedly connected to one side of the insertion block, and the insertion block has a safety insertion hole inside.

[0007] In a preferred embodiment, one side of the socket block is fixedly connected to one side of the tilt block, and the top of the tilt block is provided with an inclined surface.

[0008] In a preferred embodiment, one side of the furnace door frame is fixedly connected to one side of the latch sleeve, and the interior of the latch sleeve has a hollow groove.

[0009] In a preferred embodiment, a horizontal groove is formed on one side of the hollow groove, and a vertical groove is formed on one side of the horizontal groove. The inner wall of the hollow groove is movably connected to the outer wall of the pin rod, and there is a certain gap between the hollow groove and the pin rod.

[0010] In a preferred embodiment, the outer wall of the pin is provided with a groove, the outer wall of the pin is fixedly connected to one side of the extension rod, the outer wall of the pin is movably connected to the inner wall of the safety socket, the bottom of the pin is set as a cone, and the cone surface at the bottom of the pin is movably abutting against the inclined surface at the top of the inclined block.

[0011] In a preferred embodiment, the outer wall of the extension rod is movably connected to the inner walls of the transverse groove and the vertical groove, and the interior of the groove is movably connected to the outer wall of the auxiliary ring.

[0012] In a preferred embodiment, the inner wall of the auxiliary ring is provided with a rolling groove, and the inner wall of the rolling groove is movably connected to the outer wall of the ball, and there is a certain gap between the ball and the rolling groove, and the outer wall of the ball is in contact with the inner wall of the hollow groove.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. This utility model pushes the vacuum quenching furnace door closer to the furnace door frame. As the furnace door moves, it drives the insertion block and the tilting block to move towards the pin rod. The tilting block presses against the conical surface at the bottom of the pin rod, thereby driving the pin rod upward. At the same time, it drives the extension rod to move upward along the inner wall of the vertical groove. As the insertion block moves, the safety insertion hole moves to the bottom of the pin rod. Due to the weight of the pin rod itself, the pin rod enters the interior of the safety insertion hole. By moving the extension rod upward, the pin rod is driven upward, moving it away from the interior of the safety insertion hole. Then, the extension rod is moved into the interior of the horizontal groove, thus stabilizing the moved pin rod. As the furnace door moves, it facilitates the pin rod entering the interior of the safety insertion hole, eliminating the need for two people to work together.

[0015] 2. In this utility model, when the pin moves inside the hollow groove, the groove moves accordingly, and the ball rolls against the inner wall of the hollow groove, thereby assisting the movement of the pin. The rolling of the ball reduces the friction between the hollow groove and the pin, thereby reducing the wear of the pin and the hollow groove, and also reducing the force consumption when pulling the extension rod due to friction. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a semi-automatic furnace door safety latch provided by this utility model;

[0017] Figure 2 A schematic diagram of the pin hole mechanism for a semi-automatic furnace door safety latch provided by this utility model;

[0018] Figure 3 A schematic diagram of a semi-automatic furnace door safety latch mechanism provided by this utility model;

[0019] Figure 4 An exploded view of the latch mechanism of a semi-automatic furnace door safety latch provided by this utility model;

[0020] Figure 5An auxiliary circumferential sectional view of a semi-automatic furnace door safety latch provided for this utility model.

[0021] Legend:

[0022] 1. Vacuum quenching furnace door; 2. Pin hole mechanism; 201. Insertion block; 202. Safety insertion hole; 203. Inclined block; 3. Furnace door frame; 4. Pin mechanism; 401. Pin sleeve; 402. Hollow groove; 403. Horizontal groove; 404. Vertical groove; 405. Pin rod; 406. Groove; 407. Extension rod; 408. Auxiliary ring; 409. Ball bearing. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 This utility model provides a technical solution including: a vacuum quenching furnace door 1 and a furnace door frame 3. A pin hole mechanism 2 is provided on one side of the vacuum quenching furnace door 1. The pin hole mechanism 2 includes an insertion block 201, a safety insertion hole 202 and an inclined block 203. A latching mechanism 4 is provided on one side of the furnace door frame 3. The latching mechanism 4 includes a latch sleeve 401, a hollow groove 402, a horizontal groove 403, a vertical groove 404, a latch rod 405, a groove 406, an extension rod 407, an auxiliary ring 408 and a ball bearing 409.

[0025] In one embodiment, one side of the vacuum quenching furnace door 1 is fixedly connected to one side of the insertion block 201, the insertion block 201 has a safety insertion hole 202 inside, one side of the insertion block 201 is fixedly connected to one side of the inclined block 203, and the top of the inclined block 203 is provided with an inclined surface.

[0026] Specifically: the inclined surface of the inclined block 203 presses against the conical surface at the bottom of the pin 405, so that the pin 405 can be used semi-automatically. After the vacuum quenching furnace door 1 is closed, the weight of the pin 405 itself can cause the pin 405 to enter the interior of the safety socket 202.

[0027] In one embodiment, one side of the furnace door frame 3 is fixedly connected to one side of the pin sleeve 401. The pin sleeve 401 has a hollow groove 402 inside. A horizontal groove 403 is provided on one side of the hollow groove 402, and a vertical groove 404 is provided on one side of the horizontal groove 403. The inner wall of the hollow groove 402 is movably connected to the outer wall of the pin rod 405. There is a certain gap between the hollow groove 402 and the pin rod 405. A groove 406 is provided on the outer wall of the pin rod 405. The outer wall of the pin rod 405 is fixedly connected to one side of the extension rod 407. The outer wall of the pin rod 405 is movably connected to the inner wall of the safety socket 202. The bottom of the pin rod 405 is set as a cone, and the cone surface at the bottom of the pin rod 405 movably abuts against the inclined surface at the top of the inclined block 203.

[0028] Specifically: When the vacuum quenching furnace door 1 moves, it drives the insertion block 201 and the tilting block 203 to move towards the pin 405. The tilting block 203 presses against the conical surface at the bottom of the pin 405, so that no two people are needed to use it, reducing the cumbersomeness of using the pin 405.

[0029] In one embodiment, the outer wall of the extension rod 407 is movably connected to the inner walls of the transverse groove 403 and the vertical groove 404, and the interior of the groove 406 is movably connected to the outer wall of the auxiliary ring 408.

[0030] Specifically: the groove 406 facilitates the stability of the auxiliary ring 408, and the horizontal groove 403 and vertical groove 404 facilitate the movement of the extension rod 407.

[0031] In one embodiment, the inner wall of the auxiliary ring 408 is provided with a rolling groove, and the inner wall of the rolling groove is movably connected to the outer wall of the ball 409. There is a certain gap between the ball 409 and the rolling groove, and the outer wall of the ball 409 is in contact with the inner wall of the hollow groove 402.

[0032] Specifically: the ball bearing 409 rolls along the inner wall of the hollow groove 402, thereby assisting the movement of the pin rod 405. The ball bearing 409 reduces the friction between the hollow groove 402 and the pin rod 405.

[0033] Working principle: The vacuum quenching furnace door 1 is pushed closer to the door frame 3. As the vacuum quenching furnace door 1 moves, it drives the insertion block 201 and the tilting block 203 to move towards the pin 405. The tilting block 203 presses against the tapered surface at the bottom of the pin 405, thereby driving the pin 405 upward. At the same time, it drives the extension rod 407 to move upward along the inner wall of the vertical groove 404. When the insertion block 201 moves, causing the safety insertion hole 202 to move to the bottom of the pin 405, the weight of the pin 405 itself... The pin 405 is inserted into the safety socket 202. The extension rod 407 is moved upward, which in turn moves the pin 405 upward, moving the pin 405 away from the safety socket 202. Then, the extension rod 407 is moved into the transverse groove 403, thereby stabilizing the moved pin 405. When the pin 405 moves inside the hollow groove 402, the groove 406 moves accordingly, and the ball bearing 409 rolls against the inner wall of the hollow groove 402, thereby assisting the movement of the pin 405.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A semi-automatic stove door safety latch characterized in that, The application relates to a vacuum air quenching furnace door (1) and a furnace door frame (3), wherein one side of the vacuum air quenching furnace door (1) is provided with a pin hole mechanism (2) comprising a pin hole block (201), a safety pin hole (202) and an inclined block (203), one side of the furnace door frame (3) is provided with a pin mechanism (4) comprising a pin sleeve (401), a hollow groove (402), a horizontal groove (403), a vertical groove (404), a pin rod (405), a groove (406), an extension rod (407), an auxiliary ring (408) and a ball (409). One side of the vacuum air quenching furnace door (1) is fixedly connected with one side of the pin hole block (201), and the inside of the pin hole block (201) is provided with the safety pin hole (202).

2. A semi-automatic stove door safety latch according to claim 1, characterized in that: One side of the pin hole block (201) is fixedly connected with one side of the inclined block (203), and the top of the inclined block (203) is provided with an inclined surface.

3. A semi-automatic stove door safety latch according to claim 2, wherein: One side of the furnace door frame (3) is fixedly connected with one side of the pin sleeve (401), and the inside of the pin sleeve (401) is provided with the hollow groove (402).

4. A semi-automatic stove door safety latch according to claim 1, wherein: One side of the hollow groove (402) is provided with the horizontal groove (403), one side of the horizontal groove (403) is provided with the vertical groove (404), the inner wall of the hollow groove (402) is movably connected with the outer wall of the pin rod (405), and a gap exists between the hollow groove (402) and the pin rod (405).

5. A semi-automatic stove door safety latch according to claim 4, wherein: The outer wall of the pin rod (405) is provided with the groove (406), the outer wall of the pin rod (405) is fixedly connected with one side of the extension rod (407), the outer wall of the pin rod (405) is movably connected with the inner wall of the safety pin hole (202), the bottom of the pin rod (405) is provided with a taper, and the taper surface of the bottom of the pin rod (405) movably abuts against the inclined surface of the top of the inclined block (203).

6. A semi-automatic stove door safety latch according to claim 5, wherein: The outer wall of the extension rod (407) is movably connected with the inner walls of the horizontal groove (403) and the vertical groove (404), and the inside of the groove (406) is movably connected with the outer wall of the auxiliary ring (408).

7. A semi-automatic stove door safety latch according to claim 6, wherein: The inner wall of the auxiliary ring (408) is provided with a rolling groove, the inner wall of the rolling groove is movably connected with the outer wall of the ball (409), a gap exists between the ball (409) and the rolling groove, and the outer wall of the ball (409) is in contact with the inner wall of the hollow groove (402).

8. A semi-automatic stove door safety latch according to claim 7, wherein: ​

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