Opening and closing device and fire-fighting storage box

Abstract

The utility model relates to an opening and closing device and a fire-fighting storage box, and belongs to the technical field of fire-fighting equipment storage devices. The opening and closing device comprises a fixed door plate lock catch assembly and a movable door plate lock catch assembly, the fixed door plate lock catch assembly comprises a first supporting plate which is horizontally arranged, and a U-shaped lock catch which is arranged around a first pivot in a rotating mode and an operation handle which is arranged around a second pivot in a rotating mode are installed on the first supporting plate. The U-shaped lock catch is provided with a U-shaped opening penetrating through the upper surface and the lower surface of the U-shaped lock catch, the U-shaped lock catch is connected with the operating handle through a spring, and the U-shaped opening has a first state that the opening end faces the front side and a second state that the opening end faces the right side. The lock shaft can be clamped into the U-shaped opening and drive the U-shaped lock catch to rotate around the first pivot, and a clamping groove and clamping teeth which are matched with each other are arranged between the U-shaped lock catch and the operating handle. According to the utility model, the movable box door can be quickly and safely opened.

Description

Technical Field

[0001] The utility model relates to an opening and closing device and a fire storage box, belonging to the technical field of fire-fighting equipment storage devices. Background Technique

[0002] In the basic provisions of GB55036-2022, fire-fighting facilities shall be inspected, checked and maintained regularly, and shall be kept in normal operation and working condition. Protective measures against misoperation or damage shall be taken at devices such as manual operation buttons. GB50156-2021 stipulates that 2m 3 Sand is used for oil tank openings and ground oil fires, and can be quickly and safely activated when using sand. The existing fire sand boxes for storing sand in gas stations have various styles, but most of the boxes are made of metal materials. The setting methods and opening methods of the fire sand box doors are diverse. Some are in the form of a sluice gate (i.e., a vertical chute with a sliding door panel), and some are in the form of "rotating door panel + bolt fixing" (among which the rotating door panels are either side-opening or downward-flipping). Since the sand box door is not often used, and there is a swelling force on the door panel when it is filled with sand, the existing sand box doors generally have the problem of difficult opening in case of emergency, and it is very easy to scratch or bump the operator when these sand box doors are opened. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an opening and closing device that is convenient to operate and can quickly and safely open the movable box door.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: an opening and closing device, including a fixed door panel lock component and a movable door panel lock component. The fixed door panel lock component includes a horizontally arranged first support plate. An inverted U-shaped lock that rotates around a first pivot and an operation handle that rotates around a second pivot are installed on the first support plate. The axes of the first pivot and the second pivot are both vertically arranged. The second pivot is located in the right area of the first pivot. A first bearing is arranged between the first pivot and the mating surface of the inverted U-shaped lock, and a second bearing is arranged between the second pivot and the mating surface of the operation handle. The inverted U-shaped lock has a U-shaped opening penetrating its upper and lower surfaces. The inverted U-shaped lock and the operation handle are connected by a spring. The U-shaped opening has a first state with the opening end facing forward and a second state with the opening end facing right;

[0005] When the spring is in the natural state, the handle part of the operation handle extends towards the right, and the U-shaped opening is in the first state. At this time, the side wall plate on the side of the U-shaped opening close to the operation handle is set as the lock support arm;

[0006] The front end face of the latch arm is provided with a card slot, and the outer side face of the operating handle near the second pivot has a tooth that matches the card slot; when the U-shaped opening is in the first state and the latch arm rotates towards the right around the first pivot, the first side face of the card slot can contact the tooth and drive the operating handle to rotate around the second pivot until the tooth engages with the card slot, at which time the U-shaped opening is in the second state; when the U-shaped opening is in the second state and the handle part of the operating handle rotates towards the front side around the second pivot so that the tooth rotates towards the direction close to the first side face of the card slot, the tooth can drive the latch arm to rotate around the first pivot until the tooth disengages from the card slot, and the U-shaped opening switches to the first state;

[0007] The movable door panel latch assembly includes a fixed base, and a latch shaft is installed on one side of the fixed base, and the axis of the latch shaft is arranged vertically; the latch shaft can be inserted into the U-shaped opening and drive the U-shaped latch to rotate around the first pivot so that the U-shaped opening of the U-shaped latch switches from the first state to the second state.

[0008] As a further preferred solution of the present utility model: the first bearing is installed on the first support plate through a coaxially arranged first fixing bolt, and the smooth rod part of the first fixing bolt serves as the first pivot, and the head of the first fixing bolt simultaneously plays an axial limiting role on the first bearing and the U-shaped latch; the second bearing is installed on the first support plate through a coaxially arranged second fixing bolt, and the smooth rod part of the second fixing bolt serves as the second pivot, and the head of the second fixing bolt simultaneously plays an axial limiting role on the second bearing and the operating handle.

[0009] As a further preferred solution of the present utility model: both the first bearing and the second bearing are stainless steel bearings, a lubricating oil filling hole matching the first bearing is arranged on the head of the first fixing bolt, and a lubricating oil filling hole matching the second bearing is arranged on the head of the second fixing bolt.

[0010] As a further preferred solution of the present utility model: the first fixing bolt, the second fixing bolt, the U-shaped latch and the operating handle are all made of stainless steel.

[0011] As a further preferred solution of the present utility model: a vertically arranged second support plate is fixedly connected to the rear side of the first support plate, and bolt fixing holes are arranged on the second support plate.

[0012] As a further preferred solution of the present utility model: a vertically connecting plate is fixedly arranged on the side of the fixed base away from the latch shaft, and bolt fixing holes are arranged on the vertically connecting plate.

[0013] Based on the above opening and closing device, the present utility model also provides a fire storage box, which includes a box body. The front of the box body has a fixed door panel. A door hole is provided on the fixed door panel, and a movable door panel that can be opened and closed is arranged in the door hole. The left side of the movable door panel is rotationally connected to the fixed door panel through a hinge; a first support plate is fixedly arranged in the right area of the door hole on the outer surface of the fixed door panel, and a fixed base is fixedly arranged in the right end area of the outer surface of the movable door panel; when the movable door panel is converted from the open state to the closed state, the lock shaft can be inserted into the U-shaped opening and drive the U-shaped lock catch to rotate around the first pivot. The hinge is preferably made of a stainless steel hinge.

[0014] The beneficial effects of the present utility model are as follows: When the movable door panel is converted from the open state to the closed state, it is only necessary to normally push the movable door panel to rotate, and the lock shaft can naturally be inserted into the U-shaped opening and drive the U-shaped lock catch to rotate around the first pivot until the teeth of the operating handle are engaged with the slots of the U-shaped lock catch. At this time, the open end of the U-shaped opening faces the right side, and the lock shaft cannot be disengaged from the U-shaped opening, thereby maintaining the movable door panel in the closed state. When it is necessary to open the movable door panel, only need to push the handle part of the operating handle forward, then the teeth can be disengaged from the slots. Under the reset elastic force of the spring, the U-shaped lock catch automatically rotates and resets, and the open end of the U-shaped opening faces the front side. Under the action of inertial force, the lock shaft naturally disengages from the U-shaped opening, so that the movable door panel is in the open state; and because a first bearing and a second bearing are provided in the rotating mechanism, the present utility model requires a relatively small rotational torque during operation, and the movable door panel is convenient and rapid to open and close. And when the movable door panel is opened, the operator only needs to stand in the right area and rotate the operating handle, preventing the danger of being injured when the movable door panel suddenly opens under the swelling force of the fire sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram in the top view direction during the implementation of the present utility model (the opening and closing device is in the closed state);

[0016] Figure 2 It is a schematic structural diagram in the top view direction during the implementation of the present utility model (the opening and closing device is in the open state);

[0017] Figure 3 It is a schematic front view structural diagram during the implementation of the present utility model;

[0018] Figure 4 is Figure 3 the partial enlarged part of the area where the opening and closing device is located in

[0019] Figure 5 It is a schematic structural diagram in the top view direction of the lock catch assembly of the fixed door panel of the present utility model;

[0020] Figure 6This is a schematic structural diagram of the fixed door panel lock component of the present utility model in the front view direction;

[0021] Figure 7 This is a schematic structural diagram of the movable door panel lock component of the present utility model in the top view direction;

[0022] Figure 8 This is a schematic structural diagram of the movable door panel lock component of the present utility model in the front view direction.

[0023] Component markings in the figure: fixed base 11, lock shaft 12, vertical connecting plate 13; first support plate 21, U-shaped lock 22, operating handle 23, first pivot 24, second pivot 25, first bearing 26, second bearing 27, spring 28, card slot 29, card teeth 210, second support plate 211, lubricating oil filling hole 212; fixed door panel 31, movable door panel 32, hinge 33. Specific implementation mode

[0024] The present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0025] As Figures 1 to 8As shown in the figure, the opening and closing device in the present utility model includes a fixed door panel lock component and a movable door panel lock component. The fixed door panel lock component includes a horizontally arranged first support plate 21. A U-shaped lock 22 rotatably arranged around a first pivot 24 and an operating handle 23 rotatably arranged around a second pivot 25 are installed on the first support plate 21. The axes of the first pivot 24 and the second pivot 25 are both vertically arranged. The second pivot 25 is located in the right region of the first pivot 24. A first bearing 26 is arranged between the mating surface of the first pivot 24 and the U-shaped lock 22, and a second bearing 27 is arranged between the mating surface of the second pivot 25 and the operating handle 23. The U-shaped lock 22 has a U-shaped opening penetrating its upper and lower surfaces. The U-shaped lock 22 and the operating handle 23 are connected by a spring 28. The U-shaped opening has a first state with the open end facing forward and a second state with the open end facing right. When the spring 28 is in the natural state, the handle portion of the operating handle 23 extends towards the right, and the U-shaped opening is in the first state. At this time, the side wall plate (i.e., the right side wall plate shown in the figure) of the U-shaped opening close to the operating handle 23 is set as the lock arm. A card slot 29 is arranged on the front end surface of the lock arm, and a tooth 210 matching the card slot 29 is arranged on the outer side surface of the end of the operating handle 23 close to the second pivot 25. When the U-shaped opening is in the first state and the lock arm rotates towards the right around the first pivot 24, the first side surface of the card slot 29 can contact the tooth 210 and drive the operating handle 23 to rotate around the second pivot 25 until the tooth 210 is engaged with the card slot 29. At this time, the U-shaped opening is in the second state. When the U-shaped opening is in the second state and the handle portion of the operating handle 23 rotates towards the front around the second pivot 25 so that the tooth 210 rotates towards the direction close to the first side surface of the card slot 29, the tooth 210 can drive the lock arm to rotate around the first pivot 24 until the tooth 210 is disengaged from the card slot 29, and the U-shaped opening switches to the first state. The movable door panel lock component includes a fixed base 11. A lock shaft 12 is installed on one side of the fixed base 11, and the axis of the lock shaft 12 is vertically arranged. The lock shaft 12 can be inserted into the U-shaped opening and drive the U-shaped lock 22 to rotate around the first pivot 24, so that the U-shaped opening of the U-shaped lock 22 switches from the first state to the second state. It can be understood that the fixed base 11 exists as a bearing component of the lock shaft 12, and its outer shape structure only needs not to interfere with the transmission cooperation between the lock shaft 12 and the U-shaped lock 22. The first support plate 21 is the main part bearing plate of the fixed door panel lock component, and its outer shape structure also only needs not to interfere with the transmission cooperation between the lock shaft 12 and the U-shaped lock 22. In Figure 4In the preferred embodiment shown, the lower end of the lock shaft 12 needs to extend to the bottom of the first support plate 21, so the front end of the first support plate 21 needs to be provided with an avoidance gap on the moving path of the lock shaft 12. In some alternative embodiments, a rotating support may also be provided on the upper surface of the first support plate 21, so that the lower surface of the U-shaped lock buckle 22 is spaced a certain distance from the upper surface of the first support plate 21, so that the lock shaft 12 is disposed above the first support plate 21 as a whole.

[0026] Among them, when the U-shaped opening is in the first state with the opening end facing forward, the lock shaft 12 can be inserted into the U-shaped opening from the front and drive the U-shaped lock buckle 22 to rotate around the first pivot 24, and the vertical center plane of the U-shaped opening (i.e., the plane located in the center of the width direction of the opening and arranged vertically) can be directed to the front or offset to the left and right at a certain angle, as long as it does not affect the normal operation of the device. When the U-shaped opening is in the second state with the opening end facing the right side, it is mainly for the technical requirement that the lock shaft 12 cannot be separated from the U-shaped opening, and the vertical center plane of the U-shaped opening can be directed to the right or offset to the front and rear at a certain angle.

[0027] In addition, in order to facilitate the locking of the lock shaft 12, a guide arc surface or a guide inclined surface can be added to the inner front end of the U-shaped opening. The lock shaft 12 can generally adopt an ordinary cylindrical shaft. The transmission cooperation between the latch tooth 210 and the first side surface of the latch groove 29, and the transmission cooperation between the latch tooth 210 and the inner wall of the latch groove 29 can meet the above technical requirements. Generally, it can be a combination of inclined surfaces, inclined surfaces and arc surfaces, or arc surfaces and arc surfaces. In this embodiment, the latch groove 29 is preferably a V-shaped groove, the latch tooth 210 is a corresponding V-shaped convex tooth, and the first side surface of the latch groove 29 is a curved surface structure.

[0028] In the specific implementation of the utility model, it is only necessary to fix the first support plate 21 of the fixed door panel lock assembly on a suitable position on the outer surface of the fixed door panel 31 (or the door frame), and to fix the fixed base 11 in the movable door panel lock assembly on a corresponding position of the movable door panel 32 (rotating door).

[0029] It can be understood that the installation of the bearing can be implemented with reference to the prior art. For example, interference fit can be used, or the bearing housing can be used in combination with the bearing gland, etc. The present utility model preferably adopts a more convenient assembly method as follows. The first bearing 26 is installed on the first support plate 21 through a coaxially arranged first fixing bolt. The smooth rod portion of the first fixing bolt serves as the first pivot 24, and the head of the first fixing bolt simultaneously plays an axial limiting role for both the first bearing 26 and the U-shaped latch 22 (that is, it is equivalent to the rotation fitting hole of the U-shaped latch 22 being sleeved on the outer periphery of the first bearing 26, and the diameter of the head of the first fixing bolt is larger than the inner diameter of the rotation fitting hole of the U-shaped latch 22); the second bearing 27 is installed on the first support plate 21 through a coaxially arranged second fixing bolt. The smooth rod portion of the second fixing bolt serves as the second pivot 25, and the head of the second fixing bolt simultaneously plays an axial limiting role for both the second bearing 27 and the operating handle 23 (that is, it is equivalent to the rotation fitting hole of the operating handle 23 being sleeved on the outer periphery of the second bearing 27, and the diameter of the head of the second fixing bolt is larger than the inner diameter of the rotation fitting hole of the operating handle 23). During specific assembly, it only needs to connect and fix the first fixing bolt and the second fixing bolt to the first support plate 21 respectively.

[0030] To better ensure the rotational reliability of the U-shaped latch 22 and the operating handle 23 during use, both the first bearing 26 and the second bearing 27 are stainless steel bearings. The head of the first fixing bolt is provided with a lubricating oil filling hole 212 matching the first bearing 26, and the head of the second fixing bolt is provided with a lubricating oil filling hole 212 matching the second bearing 27. During implementation, according to the actual use situation, lubricating oil can be regularly filled into the internal transmission component area of the first bearing 26 and the second bearing 27 through the lubricating oil filling hole 212. In addition, the first fixing bolt, the second fixing bolt, the U-shaped latch 22, and the operating handle 23 are all preferably made of stainless steel.

[0031] For the convenience of installation, fixation, inspection, and replacement, a vertically arranged second support plate 211 is fixedly connected to the rear side of the first support plate 21. Bolt fixing holes are provided on the second support plate 211. During specific implementation, the second support plate 211 and the fixed door panel 31 can be connected and fixed using bolts. A vertically arranged connecting plate 13 is fixedly provided on the side of the fixed base 11 away from the lock shaft 12. Bolt fixing holes are provided on the vertically arranged connecting plate 13. During specific implementation, the vertically arranged connecting plate 13 and the movable door panel 32 can be connected and fixed using bolts. It can be understood that in some alternative solutions, the first support plate 21 and the fixed base 11 can also be fixed by welding.

[0032] On the basis of the above-mentioned opening and closing device, the utility model also provides a fire storage box, including a box body, the front of the box body has a fixed door plate 31, the fixed door plate 31 is provided with a door hole, the door hole is equipped with a movable panel door 32 that can be opened and closed, and the left side of the movable panel door 32 is rotatably connected to the fixed door plate 31 through a hinge 33; the first support plate 21 is fixedly arranged on the right side area of ​​the door hole on the outer surface of the fixed door plate 31, and the fixed base 11 is fixedly arranged on the right end area of ​​the outer surface of the movable panel door 32; when the movable panel door 32 is switched from an open state to a closed state, the lock shaft 12 can be inserted into the U-shaped opening and drive the U-shaped lock buckle 22 to rotate around the first pivot 24. The hinge 33 is preferably a stainless steel hinge.

[0033] It is understandable that the specific limitations on the directions such as up, down, front, back, left, and right in the present invention are only for the purpose of facilitating the understanding of the technical solution of the present invention. The present invention is applicable to any form of rotating opening and closing movable door panels, including side-opening, bottom-flipping, and top-flipping. The present invention is applicable to any storage box with a requirement for quick opening, especially to storage boxes for various types of firefighting equipment. When applied to the opening and closing of movable door panels of firefighting sand boxes, more prominent beneficial effects can be achieved. The working principle of the opening and closing device is hardly affected by the expansion force of the sand on the door panel. Only a small torque is required to pull the rotating operating handle 23 to quickly open the movable door panel 32.

Claims

1. An opening and closing device, comprising a fixed door panel lock assembly and a movable door panel lock assembly, characterized in that: The fixed door panel lock assembly comprises a first support plate (21) arranged horizontally, a U-shaped lock (22) arranged to rotate around a first pivot (24) and an operating handle (23) arranged to rotate around a second pivot (25) are installed on the first support plate (21), the axes of the first pivot (24) and the second pivot (25) are both arranged vertically, the second pivot (25) is located in the right area of ​​the first pivot (24), a first bearing (26) is arranged between the matching surfaces of the first pivot (24) and the U-shaped lock (22), a second bearing (27) is arranged between the matching surfaces of the second pivot (25) and the operating handle (23), the U-shaped lock (22) has a U-shaped opening running through its upper and lower surfaces, the U-shaped lock (22) and the operating handle (23) are connected by a spring (28), and the U-shaped opening has a first state in which the opening end is arranged toward the front and a second state in which the opening end is arranged toward the right; When the spring (28) is in a natural state, the handle portion of the operating handle (23) is extended toward the right side, and the U-shaped opening is in a first state. At this time, the side wall plate of the U-shaped opening close to the operating handle (23) is set as a locking arm; A locking groove (29) is provided on the front end surface of the locking arm, and a locking tooth (210) matching the locking groove (29) is provided on the outer side surface of the end of the operating handle (23) close to the second pivot (25); when the U-shaped opening is in the first state, when the locking arm rotates toward the right side around the first pivot (24), the first side surface of the locking groove (29) can contact the locking tooth (210) and drive the operating handle (23) to rotate around the second pivot (25) until the locking tooth (210) is engaged with the locking groove (29), and the U-shaped opening is in the second state; when the U-shaped opening is in the second state, the handle portion of the operating handle (23) rotates toward the front side around the second pivot (25) so that the locking tooth (210) rotates toward the first side surface close to the locking groove (29), and the locking tooth (210) can drive the locking arm to rotate around the first pivot (24) until the locking tooth (210) is disengaged from the locking groove (29), and the U-shaped opening is switched to the first state; The movable door panel lock assembly comprises a fixed base (11), a lock shaft (12) is installed on one side of the fixed base (11), and the axis of the lock shaft (12) is arranged vertically; the lock shaft (12) can be inserted into a U-shaped opening and drive the U-shaped lock (22) to rotate around a first pivot (24), so that the U-shaped opening of the U-shaped lock (22) is switched from a first state to a second state.

2. The opening and closing device according to claim 1, characterized in that: The first bearing (26) is mounted on the first support plate (21) through a coaxially arranged first fixing bolt, the bare rod portion of the first fixing bolt serves as a first pivot (24), and the head portion of the first fixing bolt simultaneously serves as an axial limit for the first bearing (26) and the U-shaped lock buckle (22); the second bearing (27) is mounted on the first support plate (21) through a coaxially arranged second fixing bolt, the bare rod portion of the second fixing bolt serves as a second pivot (25), and the head portion of the second fixing bolt simultaneously serves as an axial limit for the second bearing (27) and the operating handle (23).

3. The opening and closing device according to claim 2, characterized in that: The first bearing (26) and the second bearing (27) are both stainless steel bearings; the head of the first fixing bolt is provided with a lubricating oil filling hole (212) matching the first bearing (26); and the head of the second fixing bolt is provided with a lubricating oil filling hole (212) matching the second bearing (27).

4. The opening and closing device according to claim 3, characterized in that: The first fixing bolt, the second fixing bolt, the U-shaped lock buckle (22) and the operating handle (23) are all made of stainless steel.

5. The opening and closing device according to claim 1, characterized in that: A second support plate (211) arranged vertically is fixedly connected to the rear side of the first support plate (21), and bolt fixing holes are arranged on the second support plate (211).

6. The opening and closing device according to any one of claims 1 to 5, characterized in that: A vertical connection plate (13) is fixedly arranged on one side of the fixed base (11) away from the lock shaft (12), and a bolt fixing hole is arranged on the vertical connection plate (13).

7. A fire storage box, comprising a box body, the front of the box body having a fixed door panel (31), the fixed door panel (31) being provided with a door hole, the door hole being provided with an openable and closable movable panel door (32), the left side of the movable panel door (32) being rotatably connected to the fixed door panel (31) via a hinge (33); characterized in that: It comprises an opening and closing device as described in any one of claims 1 to 6, wherein the first support plate (21) is fixedly arranged on the right side area of ​​the door hole on the outer surface of the fixed door plate (31), and the fixed base (11) is fixedly arranged on the right end area of ​​the outer surface of the movable panel door (32); when the movable panel door (32) is converted from an open state to a closed state, the lock shaft (12) can be inserted into the U-shaped opening and drive the U-shaped lock buckle (22) to rotate around the first pivot (24).

8. The fire protection storage box according to claim 7, characterized in that: The hinge (33) is made of stainless steel.

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