Portable fire extinguishing device

Abstract

The utility model discloses a portable fire extinguishing device which is characterized in that a clamping mechanism comprises a supporting frame arranged above a moving plate, clamping hands symmetrically arranged on the left side and the right side of the supporting frame in a sliding manner, and a transmission assembly for driving the clamping hands to be close to each other or away from each other; by arranging the clamping mechanism, the fire extinguisher is clamped and fixed under the driving of the clamping motor in the transmission modes of a worm gear, a worm, a screw rod, a screw sleeve and the like. Besides, by arranging a separable coupling assembly, when the moving plate is pushed into the cabinet body, the coupling assembly is in butt joint with the rotating shaft, and electric clamping is achieved through a clamping motor; when the movable plate is pulled out from the interior of the cabinet body, the coupling assembly is separated from the rotating shaft, a worker can install the rocker on the end portion of the rotating shaft to enable the rotating shaft to be switched into manual operation, manual clamping is achieved through the rocker, and operation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing devices, in particular to a portable fire extinguishing device. Background Art

[0002] Cabinet-type fire extinguishers are a common firefighting device, widely used in protected areas such as data centers, high- and low-voltage distribution rooms, and flammable and explosive warehouses. These cabinet-type fire extinguishers contain extinguishing agents such as HFC-227ea and are secured to the cabinet using clamps, clamps, and mounting plates. They work in conjunction with smoke detectors, temperature detectors, and a gas fire extinguisher unit to form a gas fire extinguishing system. Patent No. ZL 202420030793.0 discloses a cabinet-type HFC-227ea fire extinguisher. Standoffs are fixed to the front of the left and right walls of the mounting cavity at equal intervals from top to bottom. A mounting bracket nests within the cavity. The bracket comprises a movable base with support plates on both the upper and left sides. Multiple screws are threadedly embedded in the support plates at equal intervals. The inner ends of the screws are rotatably connected to curved clamps. Positioning knobs are located on the front of the support plates, corresponding to the standoffs. The base is equipped with wheels. The mounting bracket can be pulled out of the cabinet, expanding access, facilitating tank removal and installation, and improving work efficiency. However, the solution mentioned in the above patent requires manual rotation of multiple positioning knobs and rotating heads to fix the mounting frame and clamp the arc-shaped clamping plate, which results in inconvenient operation and low assembly and disassembly efficiency. Summary of the Invention

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to provide a convenient fire extinguishing device.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A portable fire extinguishing device comprises a cabinet with a cavity, a movable plate slidably mounted inside the cabinet, a fire extinguisher placed above the movable plate, a roller mounted below the movable plate, and a clamping mechanism for clamping the fire extinguisher, characterized in that:

[0006] The clamping mechanism includes a support frame arranged above the movable plate, grippers symmetrically slidably arranged on the left and right sides of the support frame, and a transmission assembly for driving the grippers to move closer to or away from each other;

[0007] The transmission assembly includes a worm gear rotatably connected to the support frame, a rotating shaft coaxially connected to the worm gear, and a worm connected to the worm gear transmission. The two ends of the worm gear are respectively provided with external threads in opposite directions, and the clamping hands are provided with internal threads corresponding to the worm gear, and the clamping hands are respectively sleeved on the two ends of the worm gear; the rotating shaft is detachably connected to a rocker, and a clamping motor is provided on the rear side of the cabinet, and the end of the clamping motor is connected to a coupling assembly, which is arranged corresponding to the rotating shaft and is movably connected to the rotating shaft.

[0008] Preferably, the clamping hand includes a clamping seat extending forward from the support frame, one end of the clamping seat is sleeved on the outside of the worm and is threadedly connected to the worm, and the other end of the clamping seat is rotatably connected to a clamping part, which has a C-shaped structure and is arranged toward one side of the fire extinguisher.

[0009] Preferably, an L-shaped slider is provided at the rear of the clamping seat, the inner side of the slider is clamped with the support frame, and the end of the slider is slidably connected to a guide rod.

[0010] Preferably, the coupling assembly includes a shaft sleeve located at the end of the rotating shaft and a shaft seat located at the end of the clamping motor, and the shaft sleeve is movably connected to the shaft seat.

[0011] Preferably, the end surface of the shaft sleeve is provided with slots evenly distributed in an annular pattern, and the end surface of the shaft seat is provided with pins matching the slots, and the pins are movably plugged into the slots.

[0012] Preferably, a guide hole is provided in the center of the end face of the shaft sleeve, and a guide shaft is provided on the end face of the shaft seat so as to be axially aligned with the guide hole, and the guide shaft is movably plugged into the guide hole.

[0013] Preferably, the support frame is provided with a handle extending backwards, and a limit ring is sleeved on the outer side of the handle. The limit ring abuts against the rear side of the cabinet and is aligned with the position of the shaft seat.

[0014] Preferably, a bottom plate is provided below the movable plate, a telescopic and foldable connecting rod group is connected between the bottom plate and the movable plate, and the connecting rod group is transmission-connected to a driving device.

[0015] Preferably, the connecting rod group includes an active rod and a driven rod hinged to each other in the middle, the front end of the driven rod is rotatably connected to the base plate, the rear end of the driven rod is slidably connected to the movable plate, the front end of the active rod is rotatably connected to the movable plate, and the rear end of the active rod is transmission connected to the driving device.

[0016] Preferably, the driving device includes a cross bar connected to the rear end of the active rod, a wire sleeve is sleeved on the outside of the cross bar, a screw rod is connected to the inside of the wire sleeve, the screw rod and the cross bar are perpendicular to each other, and the screw rod is coaxially connected to the lifting motor.

[0017] The utility model has the following beneficial effects:

[0018] This utility model utilizes a clamping mechanism, using a worm gear, a lead screw, or other transmission methods, to clamp and secure the fire extinguisher under the drive of a clamping motor. Furthermore, a detachable coupling assembly is provided. When the movable plate is pushed into the cabinet, the coupling assembly docks with the rotating shaft, and the clamping motor achieves electric clamping. When the movable plate is pulled out of the cabinet, the coupling assembly detaches from the rotating shaft, allowing the operator to install a rocker at the end of the rotating shaft to switch to manual operation, using the rocker for manual clamping, thus improving operational convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the portable fire extinguishing device of the utility model

[0020] Figure 2 This is a schematic diagram of the structure of the clamping mechanism of the utility model

[0021] Figure 3 This is a structural diagram of the connecting rod group of the utility model

[0022] Figure 4 This is a schematic diagram of the structure of the transmission assembly of the utility model

[0023] Figure 5 This is a schematic diagram of the structure of the coupling assembly of the utility model

[0024] Description of the drawings: cabinet 1, movable plate 2, fire extinguisher 3, roller 4, support frame 5, worm gear 6, rotating shaft 7, worm 8, rocker 9, clamping motor 10, clamping seat 11, clamping part 12, slider 13, guide rod 14, sleeve 15, shaft seat 16, slot 17, pin 18, guide hole 19, guide shaft 20, handle 21, limiting ring 22, bottom plate 23, active rod 24, driven rod 25, cross bar 26, threaded sleeve 27, screw rod 28, lifting motor 29. DETAILED DESCRIPTION

[0025] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Reference Figures 1 to 5 , an embodiment provided by the utility model:

[0027] A convenient fire extinguishing device comprises a cabinet 1 with a cavity, a movable plate 2 slidably mounted inside the cabinet 1, a fire extinguisher 3 placed above the movable plate 2, a roller 4 mounted below the movable plate 2, and a clamping mechanism for clamping the fire extinguisher 3: the clamping mechanism comprises a support frame 5 arranged above the movable plate 2, clamping hands symmetrically slidably arranged on the left and right sides of the support frame 5, and a transmission assembly for driving the clamping hands to move closer or further away from each other; the transmission assembly comprises a worm gear 6 rotatably connected to the support frame 5, a rotating shaft 7 coaxially connected to the worm gear 6, and a worm 8 transmission-connected to the worm gear 6, the two ends of the worm gear 8 are respectively provided with external threads in opposite directions, the clamping hands are provided with internal threads corresponding to the worm gear 8, and the clamping hands are respectively sleeved on the two ends of the worm gear 8; the rotating shaft 7 is detachably connected to a rocker 9, a clamping motor 10 is provided on the rear side of the cabinet 1, and a coupling assembly is connected to the end of the clamping motor 10, the coupling assembly is arranged corresponding to the rotating shaft 7, and is movably connected to the rotating shaft 7.

[0028] The cabinet 1 is placed on the ground and has a rectangular structure. The cabinet 1 has a cavity that can accommodate the fire extinguisher 3. The fire extinguisher 3 is placed on the mobile plate 2, and the roller 4 is installed below the mobile plate 2. The mobile plate 2 is slidably installed inside the cabinet 1. The clamping mechanism is installed above the mobile plate 2 and is used to clamp the fire extinguisher 3. The bottom of the cabinet 1 is open, and the roller 4 is in contact with the ground. The mobile plate 2 can be moved by the roller 4, thereby being pushed into the interior of the cabinet 1 or pulled out from the interior of the cabinet 1. The support frame 5 is arranged above the mobile plate 2, and the clamps are arranged in two groups facing each other. The clamps are symmetrically arranged on the left and right sides of the support frame 5. The clamps are horizontally slidably connected to the support frame 5, and the sliding direction is left and right. The transmission assembly is installed on the support frame 5 and is connected to the clamps for driving the clamps to move closer or farther away from each other. The fire extinguisher 3 is placed relative to the middle of the support frame 5. When the two groups of clamps approach each other, the fire extinguisher 3 is clamped and fixed. When the two groups of clamps move away from each other, the clamping of the fire extinguisher 3 is released.

[0029] The worm wheel 6 is connected to the front side of the support frame 5 and is arranged to rotate vertically, with the axial direction of the worm wheel 6 being the front-to-back direction. The rotating shaft 7 is inserted into the support frame 5, installed along the front-to-back direction, and rotates relative to the support frame 5. One end of the rotating shaft 7 is coaxially connected to the worm wheel 6, and the other end of the rotating shaft 7 is used for matching installation with the rocker 9 or the coupling assembly. The worm 8 is arranged horizontally and installed along the left-right direction. The middle part of the worm 8 is connected to the worm wheel 6 for transmission, forming a worm wheel 6 and worm 8 transmission mode. The two ends of the worm 8 are respectively provided with external threads in opposite directions, and the clamp is provided with a through threaded hole. The internal thread of the threaded hole matches the external thread of the worm 8, and the clamp is connected to the worm 8 through the threaded hole. The two sets of clamps are respectively connected to the two ends of the worm 8, and are equidistant from the center of the worm 8, forming a screw 28 and screw sleeve 27 transmission mode.

[0030] The rocker 9 is detachably mounted on the end of the rotating shaft 7, and may be provided with a coaxially arranged mounting hole at the end of the rotating shaft 7. The rocker 9 has a Z-shaped structure, with one end of the rocker 9 being a mounting portion that is inserted into the mounting hole, and the other end of the rocker 9 being a handheld portion for handheld rotation. By turning the rocker 9, the staff can drive the rotating shaft 7 to rotate, thereby achieving a manual clamping effect. The clamping motor 10 is mounted on the rear side of the cabinet 1, installed in the front-to-back direction, with the end of the clamping motor 10 facing forward. The coupling assembly is mounted on the end of the clamping motor 10, and the coupling assembly matches the shape and position of the rotating shaft 7. The coupling assembly is movably connected to the rotating shaft 7, and the two can be installed and removed by docking and separating. When the movable plate 2 is pushed into the interior of the cabinet 1, the coupling assembly docks with the rotating shaft 7. Under the drive of the clamping motor 10, the rotating shaft 7 can be driven to rotate, thereby achieving an electric clamping effect. When the movable plate 2 is pulled out from the interior of the cabinet 1, the coupling assembly is separated from the rotating shaft 7, and the rocker 9 can be installed to switch to manual operation.

[0031] Working principle:

[0032] 1) When installing a fire extinguisher 3, place the fire extinguisher 3 on top of the movable plate 2. Push the movable plate 2 into the cabinet 1, and mate the coupling assembly with the rotating shaft 7. The clamping motor 10 rotates in the forward direction. Driven by the clamping motor 10, the coupling assembly drives the rotating shaft 7, which in turn drives the worm gear 6, which in turn drives the worm 8. The grippers engage with the worm gear 8, bringing the two sets of grippers closer together to grip the fire extinguisher 3, completing the installation process.

[0033] 2) To remove the fire extinguisher 3, the clamping motor 10 rotates in the opposite direction. Driven by the clamping motor 10, the coupling assembly rotates the rotating shaft 7, which in turn rotates the worm gear 6, which in turn rotates the worm 8. The grippers engage with the worm 8, moving the two sets of grippers away from each other and releasing the grip on the fire extinguisher 3. The movable plate 2 is pulled out of the cabinet 1, the coupling assembly separates from the rotating shaft 7, and the fire extinguisher 3 is moved away from the movable plate 2, completing the removal process.

[0034] 3) When the fire extinguisher 3 needs to be moved, the movable plate 2 is pulled out from the cabinet 1, the coupling assembly is separated from the rotating shaft 7, and the fire extinguisher 3 is positioned above the movable plate 2 and moved by the rollers 4. At the same time, the rocker 9 is installed at the end of the rotating shaft 7, and the electric clamping is switched to manual clamping. By turning the rocker 9, the operator can drive the rotating shaft 7 to rotate, thereby controlling the clamping hands to move closer or further away from each other.

[0035] The present invention provides a clamping mechanism that uses a worm gear 6, a worm 8, a screw 28, and a threaded sleeve 27 for transmission, and is driven by a clamping motor 10 to clamp and secure the fire extinguisher 3. Furthermore, a detachable coupling assembly is provided. When the movable plate 2 is pushed into the interior of the cabinet 1, the coupling assembly docks with the rotating shaft 7, and the clamping motor 10 is used to achieve electric clamping. When the movable plate 2 is pulled out of the cabinet 1, the coupling assembly is separated from the rotating shaft 7, and a staff member can install a rocker 9 at the end of the rotating shaft 7 to switch to manual operation. Manual clamping is achieved using the rocker 9, thereby improving operational convenience.

[0036] In this embodiment, as a preference, the clamp includes a clamping seat 11 extending forward from the support frame 5, one end of the clamping seat 11 is sleeved on the outside of the worm 8 and is threadedly connected to the worm 8, and the other end of the clamping seat 11 is rotatably connected to a clamping portion 12, which is C-shaped and is arranged toward the side of the fire extinguisher 3.

[0037] The clamping seat 11 is located on the front side of the support frame 5 and extends forward. One end of the clamping seat 11 is sleeved on the outside of the worm 8 and is threadedly connected to the worm 8. The clamping seat 11 may be provided with a through threaded hole, which is arranged in the left and right directions. The internal thread of the threaded hole matches the external thread of the worm 8, and the clamping seat 11 is sleeved with the worm 8 through the threaded hole. Under the drive of the worm 8, the clamping seat 11 is transmission-connected with the worm 8, and the clamping seats 11 of the two groups of clamping hands approach each other until the clamping part 12 abuts against the fire extinguisher 3, thereby clamping the fire extinguisher 3. The other end of the clamping seat 11 is rotatably connected to the clamping part 12, and the clamping part 12 is a C-shaped structure and is arranged toward one side of the fire extinguisher 3. The clamping part 12 may match the shape of the fire extinguisher 3, and the clamping part 12 and the clamping seat 11 can rotate relative to each other, with a torsion spring connected between the two. In a normal state, the clamping parts 12 of the two sets of clamping hands are arranged facing each other, and under the action of the torsion spring, the clamping parts 12 are opened relative to the front, so that the fire extinguisher 3 can be placed between the two sets of clamping hands conveniently.

[0038] In this embodiment, as a preference, an L-shaped slider 13 is provided behind the clamping seat 11 , the inner side of the slider 13 is engaged with the support frame 5 , and the end of the slider 13 is slidably connected to a guide rod 14 .

[0039] The slider 13 is located behind the clamping seat 11, has an L-shaped structure, and extends downward. The inner side of the slider 13 is clamped with the support frame 5, and can be a U-shaped groove structure formed between the slider 13 and the clamping seat 11. The U-shaped groove is located on the inner side of the slider 13, and the slider 13 is clamped on the top of the support frame 5. The two slide relative to each other, thereby improving the stability of the clamping hand installation. The guide rod 14 is located behind the support frame 5, installed in the left-right direction, and fixedly connected to the support frame 5. A through guide hole is provided at the end of the slider 13, and the guide hole is arranged in the left-right direction. The slider 13 is sleeved on the outside of the guide rod 14 through the guide hole and is slidably connected to the guide rod 14, thereby improving the stability of the clamping hand movement.

[0040] In this embodiment, preferably, the coupling assembly includes a shaft sleeve 15 located at the end of the rotating shaft 7 and a shaft seat 16 located at the end of the clamping motor 10, and the shaft sleeve 15 is movably connected to the shaft seat 16.

[0041] The shaft sleeve 15 is located at the end of the rotating shaft 7, and the rotating shaft 7 is installed in the front-to-back direction. The shaft sleeve 15 is coaxially connected to the rear end of the rotating shaft 7. The shaft seat 16 is located at the end of the clamping motor 10, and the clamping motor 10 is installed in the front-to-back direction. The end of the clamping motor 10 passes through the rear side of the cabinet 1 and extends forward. The shaft seat 16 is coaxially connected to the front end of the clamping motor 10. The shaft sleeve 15 and the shaft seat 16 are arranged facing each other, and the shapes and positions of the two are matched. The shaft sleeve 15 and the shaft seat 16 are movably connected and fixed by means of socketing, clamping, plugging, etc., and the two are detachable. After the shaft sleeve 15 is docked with the shaft seat 16, the clamping motor 10 is connected to the rotating shaft 7. Under the drive of the clamping motor 10, the rotating shaft 7 is driven to rotate to achieve an electric clamping effect. After the shaft sleeve 15 is separated from the shaft seat 16, the clamping motor 10 is disconnected from the rotating shaft 7 to avoid affecting the push-pull operation of the movable plate 2.

[0042] In this embodiment, preferably, the end surface of the shaft sleeve 15 is provided with an annularly evenly distributed slots 17 , and the end surface of the shaft seat 16 is provided with pins 18 matching the slots 17 , and the pins 18 are movably plugged into the slots 17 .

[0043] The slot 17 is located on the end face of the sleeve 15, and is opened inward from the end face of the sleeve 15, and is a groove-like structure. The slots 17 are evenly distributed around the center of the sleeve 15, and are distributed in a ring shape on the outside of the end face of the sleeve 15. The pins 18 are located on the end face of the shaft seat 16, and extend outward from the end face of the shaft seat 16, and are a convex structure. The pins 18 are evenly distributed around the center of the shaft seat 16, and are distributed in a ring shape on the outside of the end face of the shaft seat 16. The pins 18 and the slot 17 are arranged opposite to each other, and the shapes and positions of the two are matched. The pins 18 and the slot 17 are movably plugged in, and the two can be detached and separated. When the sleeve 15 is docked with the shaft seat 16, the pins 18 are inserted into the slot 17 until the sleeve 15 and the shaft seat 16 are in contact, so as to clamp the motor 10 and connect it with the rotating shaft 7, thereby improving the connection stability of the coupling assembly.

[0044] In this embodiment, preferably, a guide hole 19 is provided in the center of the end face of the shaft sleeve 15 , and a guide shaft 20 is provided on the end face of the shaft seat 16 axially aligned with the guide hole 19 , and the guide shaft 20 is movably plugged into the guide hole 19 .

[0045] The guide hole 19 is located at the center of the end face of the sleeve 15, and is opened inward from the end face of the sleeve 15, and has a circular hole-shaped structure. The guide shaft 20 is located at the center of the end face of the shaft seat 16, and extends outward from the end face of the shaft seat 16, and has a cylindrical structure. The guide shaft 20 and the guide hole 19 are arranged opposite to each other, and the two are matched in shape and corresponding in position. The distance from the end face of the guide shaft 20 to the end face of the shaft seat 16 is greater than the distance from the end face of the pin 18 to the end face of the shaft seat 16. It can be understood that the length of the guide shaft 20 is greater than the length of the pin 18. The guide shaft 20 and the guide hole 19 are movably plugged in, and the two can be detached and removed. When the sleeve 15 and the shaft seat 16 are docked, the guide shaft 20 is first inserted into the guide hole 19 to play a positioning role, and the pin 18 is then inserted into the slot 17 until the sleeve 15 and the shaft seat 16 are in contact, thereby improving the installation accuracy of the coupling assembly. In addition, the guide hole 19 can be used as the installation area of ​​the rocker 9. When the movable plate 2 is pulled out from the inside of the cabinet 1, the coupling assembly is separated from the rotating shaft 7. The staff inserts the rocker 9 into the guide hole 19 to connect the rocker 9 to the rotating shaft 7. By rotating the rocker 9, the rotating shaft 7 can be driven to rotate, thereby achieving a manual clamping effect.

[0046] In this embodiment, preferably, the support frame 5 is provided with a handle 21 extending backward, and a limit ring 22 is sleeved on the outer side of the handle 21. The limit ring 22 abuts against the rear side of the cabinet 1 and is aligned with the shaft seat 16.

[0047] The handle 21 is located on the rear side of the support frame 5, extending backward, symmetrically arranged on the left and right sides of the support frame 5, and has a cylindrical structure. When the fire extinguisher 3 needs to be carried, the movable plate 2 is pulled out from the inside of the cabinet 1, the coupling assembly is separated from the rotating shaft 7, and the fire extinguisher 3 is located above the movable plate 2 and moved by the roller 4. The staff can push the movable plate 2 to the target position by holding the handle 21. The limiting ring 22 is sleeved on the outside of the handle 21 and has a circular ring structure. A avoidance hole for the handle 21 to pass through is provided on the rear side of the cabinet 1, and the handle 21 is movably inserted into the avoidance hole. When the fire extinguisher 3 needs to be installed, the fire extinguisher 3 is placed on the movable plate 2, and the movable plate 2 is pushed into the interior of the cabinet 1 until the handle 21 passes through the avoidance hole, and the limiting ring 22 abuts against the rear side of the cabinet 1. At this time, the limiting ring 22 is aligned with the shaft seat 16, the shaft sleeve 15 is connected and fixed to the shaft seat 16, and the limiting ring 22 plays a limiting role, thereby improving the installation accuracy of the coupling assembly.

[0048] In this embodiment, preferably, a bottom plate 23 is provided below the movable plate 2, a retractable and foldable connecting rod group is connected between the bottom plate 23 and the movable plate 2, and the connecting rod group is transmission-connected to a driving device.

[0049] The base plate 23 is located below the movable plate 2, horizontally arranged and parallel to the movable plate 2. The roller 4 is mounted below the base plate 23. A connecting rod assembly is located between the base plate 23 and the movable plate 2 and is composed of multiple connecting rods. There are two connecting rod assemblies, symmetrically arranged on the left and right sides of the base plate 23, and they have telescopic and folding functions. One end of the connecting rod assembly is connected to the base plate 23, and the other end of the connecting rod assembly is connected to the movable plate 2. A drive device is located above the base plate 23 and is in transmission connection with the connecting rod assembly. Driven by the drive device, the connecting rod assembly telescopes and folds, adjusting the distance between the base plate 23 and the movable plate 2, thereby achieving the lifting and lowering adjustment of the movable plate 2.

[0050] In this embodiment, as a preference, the connecting rod group includes an active rod 24 and a driven rod 25 which are hinged to each other in the middle, the front end of the driven rod 25 is rotatably connected to the base plate 23, the rear end of the driven rod 25 is slidably connected to the movable plate 2, the front end of the active rod 24 is rotatably connected to the movable plate 2, and the rear end of the active rod 24 is transmission-connected to the driving device.

[0051] The middle portion of the active rod 24 and the middle portion of the driven rod 25 are hinged to each other in an X-shaped arrangement, and the two can rotate relative to each other. The front end of the driven rod 25 is located above the front side of the base plate 23 and is rotationally connected to the base plate 23. The rear end of the driven rod 25 is located below the rear side of the movable plate 2 and is slidably connected to the movable plate 2. A connecting rod groove can be provided below the rear side of the movable plate 2, and a connecting rod slider 13 embedded in the connecting rod groove can be provided at the rear end of the driven rod 25, and the connecting rod slider 13 slides along the connecting rod groove. The front end of the active rod 24 is located below the front side of the movable plate 2 and is rotationally connected to the movable plate 2. The rear end of the active rod 24 is located above the rear side of the base plate 23 and is transmission-connected to the driving device. Driven by the driving device, the active rod 24 and the driven rod 25 rotate relative to each other, realizing the telescopic and folding of the connecting rod group.

[0052] In this embodiment, as a preference, the driving device includes a cross bar 26 connected to the rear end of the active rod 24, a wire sleeve 27 is sleeved on the outer side of the cross bar 26, a screw rod 28 is connected to the inside of the wire sleeve 27 for transmission, the screw rod 28 and the cross bar 26 are perpendicular to each other, and the screw rod 28 is coaxially connected to the lifting motor 29.

[0053] The crossbar 26 is located at the rear end of the active rod 24 and is arranged in the left-right direction to connect the rear ends of the active rods 24 of the two connecting rod groups. The silk sleeve 27 is located in the middle of the crossbar 26 and is sleeved on the outside of the crossbar 26. The screw rod 28 is arranged in the front-to-back direction and is perpendicular to the crossbar 26. The screw rod 28 is sleeved inside the silk sleeve 27 and is transmission-connected with the silk sleeve 27. The lifting motor 29 is located above the base plate 23 and is installed in the front-to-back direction. The end of the lifting motor 29 is arranged forward and is coaxially connected to the screw rod 28. Under the drive of the lifting motor 29, the lifting motor 29 drives the screw rod 28 to rotate. The screw rod 28 is transmission-connected with the silk sleeve 27, driving the silk sleeve 27 to move along the screw rod 28, driving the crossbar 26 to move in the front-to-back direction, driving the active rod 24 and the driven rod 25 to rotate relative to each other, thereby adjusting the height of the movable plate 2.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable fire extinguishing device comprising a cabinet with a cavity, a movable plate slidably mounted inside the cabinet, a fire extinguisher placed above the movable plate, a roller mounted below the movable plate, and a clamping mechanism for clamping the fire extinguisher, characterized in that: The clamping mechanism includes a support frame arranged above the movable plate, grippers symmetrically slidably arranged on the left and right sides of the support frame, and a transmission assembly for driving the grippers to move closer to or away from each other; The transmission assembly includes a worm gear rotatably connected to the support frame, a rotating shaft coaxially connected to the worm gear, and a worm connected to the worm gear transmission. The two ends of the worm gear are respectively provided with external threads in opposite directions, and the clamping hands are provided with internal threads corresponding to the worm gear, and the clamping hands are respectively sleeved on the two ends of the worm gear; the rotating shaft is detachably connected to a rocker, and a clamping motor is provided on the rear side of the cabinet, and the end of the clamping motor is connected to a coupling assembly, which is arranged corresponding to the rotating shaft and is movably connected to the rotating shaft.

2. A portable fire extinguishing device according to claim 1, characterized in that: The clamping hand includes a clamping seat extending forward from the support frame, one end of the clamping seat is sleeved on the outside of the worm and is threadedly connected to the worm, and the other end of the clamping seat is rotatably connected to a clamping part, which has a C-shaped structure and is arranged toward one side of the fire extinguisher.

3. A portable fire extinguishing device according to claim 2, characterized in that: An L-shaped sliding block is provided at the rear of the clamping seat, the inner side of the sliding block is clamped with the supporting frame, and the end of the sliding block is slidably connected to a guide rod.

4. A portable fire extinguishing device according to claim 1, characterized in that: The coupling assembly includes a shaft sleeve located at the end of the rotating shaft and a shaft seat located at the end of the clamping motor, and the shaft sleeve is movably connected to the shaft seat.

5. A portable fire extinguishing device according to claim 4, characterized in that: The end surface of the shaft sleeve is provided with slots which are evenly distributed in an annular pattern, and the end surface of the shaft seat is provided with pins which match the slots, and the pins are movably plugged into the slots.

6. A portable fire extinguishing device according to claim 5, characterized in that: A guide hole is provided in the center of the end face of the shaft sleeve, and a guide shaft which is axially aligned with the guide hole is provided on the end face of the shaft seat. The guide shaft is movably plugged into the guide hole.

7. A portable fire extinguishing device according to claim 6, characterized in that: The support frame is provided with a handle extending backwards, and a limiting ring is sleeved on the outer side of the handle. The limiting ring abuts against the rear side of the cabinet and is aligned with the position of the shaft seat.

8. The portable fire extinguishing device according to claim 1, characterized in that: A bottom plate is provided below the movable plate, a telescopic and foldable connecting rod group is connected between the bottom plate and the movable plate, and the connecting rod group is transmission-connected with a driving device.

9. A portable fire extinguishing device according to claim 8, characterized in that: The connecting rod group includes an active rod and a driven rod hinged to each other in the middle, the front end of the driven rod is rotatably connected to the base plate, the rear end of the driven rod is slidably connected to the movable plate, the front end of the active rod is rotatably connected to the movable plate, and the rear end of the active rod is transmission connected to the driving device.

10. The portable fire extinguishing device according to claim 9, characterized in that: The driving device includes a cross bar connected to the rear end of the active rod, a wire sleeve is sleeved on the outside of the cross bar, a lead screw is connected to the inside of the wire sleeve, the lead screw and the cross bar are perpendicular to each other, and the lead screw is coaxially connected to the lifting motor.

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