Locking mechanism of indoor firework characteristic training device
By designing a locking mechanism including push rod, lock groove and roller in the indoor pyrotechnic characteristic training device, the problem of difficult opening of the entrance door caused by thermal expansion and contraction of the container is solved, and the firefighter evacuation in simulated fire training is realized safety and convenience.
Patent Information
- Application Number
- CN202420935089.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-30
AI Technical Summary
During simulated fire fighting training, container materials expanded and contracted due to temperature fluctuations, and traditional door locks were difficult to open, hindering firefighters from evacuating.
A locking mechanism of indoor pyrotechnic characteristics training device is designed, including a base, an articulated push rod, a lock groove, a roller and a spring. The lock groove is engaging or separated by the swing of the push rod, thereby achieving locking and easy opening of the entrance door. .
After the box is thermally expanded and contracted, the entrance door can be easily opened by operating the push rod, solving the problem of difficulty in opening the traditional lock and improving the safety and convenience of firefighters' evacuation.
Smart Images
Figure CN222276459U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fireproof doors of indoor pyrotechnic characteristic training devices, in particular to a locking mechanism of an indoor pyrotechnic characteristic training device. Background Art
[0002] The indoor pyrotechnics and fire characteristics training device, also known as a containerized simulated firefighting chamber, is a specially designed training facility that simulates a real-world fire environment, allowing firefighters to conduct hands-on training. Typically constructed from a standard freight container, this simulated chamber is equipped with a flame combustion system, smoke generator, temperature control system, and safety monitoring system. This simulated environment allows firefighters to train in firefighting, rescue, demolition, ventilation, and evacuation.
[0003] When designing containerized simulation chambers for firefighting training, ensuring personnel safety is a paramount design principle. The entrance to the simulation chamber must ensure unimpeded access for firefighters to the simulated training area and rapid evacuation in the event of an emergency. Currently, the entrances to these simulation chambers are mostly located on the side of the container, secured to the main body using conventional door locking mechanisms.
[0004] During implementation, the inventors discovered that the above-mentioned prior art has at least the following drawbacks: During simulated firefighting training, container materials expand and contract due to temperature fluctuations. This expansion and contraction makes it difficult to open the container using traditional door locks, hindering firefighters' evacuation in an emergency. Utility Model Content
[0005] The embodiment of the present application solves the problem in the prior art that the entrance door of a container-type simulated fire fighting cabin is difficult to open after the box body expands and contracts due to heat.
[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a locking mechanism of an indoor fireworks characteristics training device, comprising a base fixed on the entrance door, a push rod hinged on the base, a lock groove formed at one end of the push rod close to the base, and a cavity running through both sides thereof; correspondingly, a lock hook is fixed on the box body, and when the entrance door is closed, the push rod can rotate around the base and make the lock groove engage with the outer periphery of the lock hook; a roller is installed in the lock groove, and a rotating shaft is installed on the axis of the roller, and both ends of the rotating shaft are installed on the side walls of the lock groove; both side walls of the lock groove are provided with strip holes, and both ends of the rotating shaft are fixed with connecting blocks after passing through the strip holes, and a spring is installed on the connecting block, one end of the spring is fixed to the connecting block, and the other end of the spring is fixed to the side wall of the lock groove.
[0007] During use, the push rod swings toward the hook, causing the lock slot to engage the hook's outer periphery, locking the entrance door. When the cabinet expands or contracts due to heat, the push rod is swung away from the hook to disengage the lock slot. Because the lock slot is located on the push rod's end near the base, it reduces effort and facilitates opening the entrance door.
[0008] Furthermore, the front end of the lock hook is a hook head, which is bent toward the base, and the rear end of the lock hook is fixed to the box body through a connecting plate; thereby, the lock groove can be more easily engaged with the outer periphery of the lock hook, thereby achieving a more convenient locking effect.
[0009] Furthermore, the base includes a metal plate, one side of the metal plate can be welded and fixed to the entrance door, and the other side of the metal plate is welded and fixed with a hinge seat, and the hinge seat is connected to one end of the push rod through a pin shaft.
[0010] Furthermore, a through hole is provided at the front end of the push rod, and the pin can pass through the through hole.
[0011] Furthermore, a sleeve is nested at one end of the push rod away from the locking groove.
[0012] Furthermore, a groove is provided on a side of the locking hook that contacts the roller, and the roller can be located in the groove.
[0013] It can be seen from the above technical solutions that the present invention has at least the following technical effects or advantages:
[0014] During use, the push rod swings toward the hook, causing the lock slot to engage the hook's outer periphery, locking the entrance door. When the cabinet expands or contracts due to heat, the push rod is swung away from the hook to disengage the lock slot. Because the lock slot is located on the push rod's end near the base, it reduces effort and facilitates opening the entrance door. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic structural diagram of the base in the present utility model;
[0018] Figure 3 It is a structural schematic diagram of the push rod in the utility model.
[0019] Explanation of the accompanying reference numerals: 1. base, 2. push rod, 3. lock slot, 4. pin, 5. roller, 6. bar hole, 7. connecting block, 8. spring, 9. flange. DETAILED DESCRIPTION
[0020] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of this patent, other embodiments obtained by ordinary technicians in this field without making creative work are all within the scope of protection of this patent.
[0021] The utility model discloses a locking mechanism for an indoor pyrotechnic characteristics training device, which can be used to lock the entrance door of a container-type simulated fire cabin. Figure 1 As shown, it comprises a base 1 fixed to the entrance door and a lock hook 10 fixed to the box body. A push rod 2 is hingedly connected to the base 1, and a lock slot 3 is provided on the push rod 2. When the entrance door is closed, the push rod 2 is rotated to engage the lock slot 3 with the outer periphery of the lock hook 10, thereby locking the entrance door and the box body.
[0022] The locking hook 10 is fixed to the box. The front end of the locking hook 10 is a curved hook head. When the locking hook 10 is fixed to the box, the curved direction of the hook head faces the base 1. This allows the locking slot 3 to engage with the hook head more easily when the push rod 2 rotates. A connecting plate is fixed to the rear end of the locking hook 10, which is welded to the box.
[0023] like Figure 2 As shown, the base 1 includes a metal plate and a hinge seat located on the metal plate. One surface of the metal plate is welded and fixed to the entrance door, and the hinge seat is welded and fixed to the other surface of the metal plate. A through hole is provided on the side of the hinge seat away from the metal plate, and correspondingly, a through hole is also provided at the front end of the push rod 2. When the through hole at the front end of the push rod 2 is in a concentric position with the through hole on the hinge seat, the pin 4 can pass through it. In this way, the push rod 2 and the base 1 are hinged, so that the push rod 2 can swing around the base 1 in a horizontal plane. In addition, a sleeve is embedded in the rear end of the push rod 2, that is, the end of the push rod away from the lock groove 3. The sleeve can be made of heat-insulating material, which makes it easier to operate.
[0024] The locking slot 3 is formed with a cavity extending through both sides thereof, within which a roller 5 is mounted. When the push rod 2 swings and brings the locking slot 3 closer to the locking hook 10, the outer periphery of the roller 5 can contact one side of the locking hook 10, thereby enabling the locking slot 3 to more easily engage with the outer periphery of the locking hook 10. Specifically, in this embodiment, a rotating shaft is mounted at the axis of the roller 5, with both ends of the rotating shaft mounted on the two side walls of the locking slot 3. When one side of the locking hook 10 contacts the outer periphery of the roller 5, the roller 5 can rotate relative to the rotating shaft.
[0025] The two side walls of the lock slot 3 are provided with strip holes 6. After the two ends of the rotating shaft pass through the strip holes 6, they are fixed with connecting blocks 7, thereby keeping the roller 5 in the cavity of the lock slot 3. A spring 8 is installed on the connecting block 7, one end of the spring 8 is fixed to the connecting block 7, and the other end of the spring 8 is fixed to the side wall of the lock slot 3. Figure 3 As shown, flanges 9 protrude from both sides of the lock slot 3 to secure one end of a spring 8. When the two ends of the spring 8 are secured to the flanges 9 and the connecting block 7, respectively, the spring 8 is always compressed. This helps maintain contact between the roller 5 and the lock hook 10. It should be understood that the back of the lock hook 10, where it contacts the roller 5, is also provided with a groove. The sides of the groove transition to the back of the lock hook 10 through an arcuate surface. When the push rod 2 swings to a certain position, the roller 5 can be located in the groove of the lock hook 10, thereby locking the entrance door.
[0026] The working principle of this utility model is as follows:
[0027] After the entrance door is closed, push rod 2 swings around base 1. As push rod 2 swings, roller 5 in lock slot 3 contacts one side of hook 10, compressing spring 8. When the push rod swings to a certain angle, roller 5, under the elastic force of spring 8, compresses radially into the groove of hook 10, thereby locking the entrance door. When the cabinet expands and contracts due to heat or cold, manually operating push rod 2 to swing it away from hook 10 opens the mechanism, saving effort and facilitating operation.
[0028] In the description of this utility model, the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "vertical," "horizontal," and the like, indicating positions or locations, are based on the positions or locations shown in the accompanying drawings and are intended solely for the purpose of describing the utility model. They do not require that the utility model be constructed or operated in a specific position and are therefore not to be construed as limiting the utility model. The terms "connected" and "connected" in this utility model should be understood broadly, for example, to mean connected or detachably connected; directly connected or indirectly connected via an intermediate component. Those skilled in the art will understand the specific meanings of the above terms in specific circumstances.
[0029] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in their embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be construed in the widest possible manner consistent with the principles and novelties disclosed herein.
Claims
1. A locking mechanism for an indoor pyrotechnic characteristics training device, comprising a base (1) fixed to an entrance door, characterized in that: A push rod (2) is hingedly connected to the base (1), and a lock groove (3) is provided at one end of the push rod (2) close to the base (1), and the lock groove (3) forms a cavity running through both sides thereof; correspondingly, a lock hook (10) is fixed to the box body, and when the entrance door is closed, the push rod (2) can rotate around the base (1) and make the lock groove (3) engage with the outer periphery of the lock hook (10); a roller (5) is installed in the lock groove (3), and a rotating shaft is rotatably installed on the axis of the roller (5), and both ends of the rotating shaft are installed on the side walls of the lock groove (3); both side walls of the lock groove (3) are provided with strip holes (6), and both ends of the rotating shaft are fixed with connecting blocks (7) after passing through the strip holes (6), and a spring (8) is installed on the connecting block (7), one end of the spring (8) is fixed to the connecting block (7), and the other end of the spring (8) is fixed to the side wall of the lock groove (3).
2. The locking mechanism of an indoor pyrotechnic characteristics training device according to claim 1, characterized in that: The front end of the lock hook (10) is a hook head, which is bent toward the base (1), and the rear end of the lock hook (10) is fixed to the box body via a connecting plate.
3. The locking mechanism of an indoor pyrotechnic characteristics training device according to claim 2, characterized in that: The base (1) comprises a metal plate, one side of which can be welded and fixed to the entrance door, and the other side of the metal plate is welded and fixed with a hinge seat, which is connected to one end of the push rod (2) via a pin shaft (4).
4. The locking mechanism of an indoor pyrotechnic characteristics training device according to claim 3, characterized in that: A through hole is provided at the front end of the push rod (2), and the through hole can be passed through by the pin shaft (4).
5. The locking mechanism of an indoor pyrotechnic characteristics training device according to claim 4, characterized in that: A sleeve is embedded in one end of the push rod (2) away from the locking groove (3).
6. A locking mechanism for an indoor pyrotechnic characteristics training device according to any one of claims 1 to 5, characterized in that: A groove is provided on the side of the locking hook (10) that contacts the roller (5), and the roller (5) can be located in the groove.