Portable fire extinguisher

Abstract

The invention relates to the field of fire extinguishers, and discloses a portable fire extinguisher which comprises a bottom plate and a fire extinguisher body, a lifting plate is arranged above the bottom plate through a lifting structure, and first vertical plates are fastened to the middles of the front side edge and the rear side edge of the upper face of the lifting plate through bolts; a square frame is arranged between the two first vertical plates through a rotating structure, second vertical plates are connected to the middle of the front side edge and the middle of the rear side edge of the upper face of the bottom plate correspondingly, and during fire extinguishing, the fire extinguisher can be directly placed on the ground near a fire scene, and the fire extinguishing effect is achieved through a transverse moving structure. The fire extinguisher main body is driven to move back and forth on the square frame along the horizontal direction in a reciprocating manner and is matched with the driving structure, so that the fire extinguisher main body swings up and down in a reciprocating manner in the transverse moving process and extinguishes fire towards each position of a fire scene, and fire extinguishers do not need to carry the fire extinguishers on the fire scene; the operation is more labor-saving, and the fire extinguishing safety is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguishers, and more particularly to a portable fire extinguisher. Background Art

[0002] A fire extinguisher is a portable fire-fighting tool; chemicals are placed inside the fire extinguisher to extinguish fires; a fire extinguisher is one of the common fire-fighting equipment and is stored in public places or places where fires may occur. The ingredients filled in different types of fire extinguishers are different and are designed for different fire causes.

[0003] In the existing technology, a fire extinguisher fixes an annular band on the outer wall of the cylinder body through an adhesive, and a connecting frame on the outer wall of the nozzle can be inserted into a jack inside the annular band, so as to realize the combination of the nozzle and the cylinder body, replacing the traditional snap connection method and ensuring the stability of the connection between the nozzle and the cylinder body.

[0004] When the existing technology fire extinguisher is used at the fire scene, the fire-fighting personnel need to pull down the pull ring, press the lever, and hold the fire extinguisher by hand to extinguish fires at various positions. This is relatively laborious for extinguishing fires, and in an easily explosive fire scene, the fire-fighting personnel extinguish fires on the scene, which poses a safety hazard. Therefore, there are areas for improvement. Summary of the Invention

[0005] In order to solve the problems raised in the above background art, the present invention provides a portable fire extinguisher.

[0006] The portable fire extinguisher provided by the present invention adopts the following technical solutions:

[0007] A portable fire extinguisher includes a bottom plate and a fire extinguisher main body. An elevating plate is arranged above the bottom plate through an elevating structure. First vertical plates are fastened by bolts at the middle positions of the front and rear edges on the upper surface of the elevating plate. A square frame is arranged between the two first vertical plates through a rotating structure. Second vertical plates are connected at the middle positions of the front and rear edges on the upper surface of the bottom plate. A handle is arranged between the two second vertical plates through a positioning structure.

[0008] An installation sleeve is arranged on the square frame through a transverse movement structure. The fire extinguisher main body is arranged inside the installation sleeve through a clamping structure. A lever is arranged at the top of the fire extinguisher main body. An extrusion structure is arranged above the fire extinguisher main body.

[0009] The lateral movement structure includes a cylindrical rod fixedly connected between the inner walls of the front and rear sides of the square frame. A rotating tube is movably sleeved on the cylindrical rod. A moving sleeve is rotatably sleeved in the middle of the rotating tube. A first connecting block is welded on one side of the moving sleeve. One end of the first connecting block is welded on the mounting sleeve. A second connecting block is welded on the other side of the moving sleeve. A driving structure is arranged on the second connecting block. An electric telescopic rod is installed at the edge of the rear side of the square frame. One end of the output shaft of the electric telescopic rod is connected to the moving sleeve. One end of the second connecting block movably passes through a reinforcing rod. Both ends of the reinforcing rod are connected to the square frame.

[0010] Preferably, the driving structure includes first connecting strips connected to the upper and lower side surfaces of the second connecting block. One end of each first connecting strip is provided with an end block. A through strip movably passes through the two end blocks. A driving strip is arranged on the side surface of the through strip close to the rotating tube. A gear is fixedly sleeved on the front end of the rotating tube. Teeth meshing with the gear are arranged on the driving strip. The bottom end of the through strip is connected to a fixed block. A plug rod fixedly passes through the fixed block. A first cross plate is connected to the lower position of the second connecting block on the right side surface of the square frame. A driving groove is formed in the first cross plate. One end of the plug rod movably passes through the driving groove.

[0011] Preferably, the rotating structure includes rotating rods connected to the middle positions of the outer surfaces of the front and rear sides of the square frame. One end of each rotating rod is rotatably connected to the second vertical plate. A slot is formed in the front end surface of the front rotating rod. An insertion block is movably inserted into the slot. Both the insertion block and the end wall of the slot are square. A first spring is connected between one end of the insertion block and the inner end wall of the slot. A positioning disk is installed at the other end of the insertion block. The end surface of the positioning disk is polygonal. A positioning groove is formed in the front surface of the front second vertical plate. The positioning disk is movably inserted into the positioning groove. A pull rod is connected to the middle position of one side surface of the positioning disk.

[0012] Preferably, the lifting structure includes a bidirectional screw rod horizontally and rotatably passing through the middle of the bottom plate. First turntables are fixedly sleeved on both ends of the bidirectional screw rod. The thread directions of the left and right sections of the bidirectional screw rod are opposite. Moving plates are sleeved on both ends of the bidirectional screw rod. Thread grooves for the bidirectional screw rod to pass through are formed in the middle of the moving plates. Cross bars are connected to the front edges between the inner walls on the left and right sides of the bottom plate. Through holes for the cross bars to movably pass through are formed at the ends of the moving plates. Protrusions are arranged at the front and rear ends on the upper surface of the moving plates. Curved rods are rotatably connected to the protrusions. The top ends of the curved rods are rotatably connected to the lifting plate.

[0013] Preferably, the clamping structure includes two storage grooves formed in the mounting sleeve. Threaded tubes are connected to the outer side surface of the mounting sleeve at the positions of the two storage grooves. Threaded rods rotatably pass through the threaded tubes. Clamping plates are arranged in the storage grooves. One end of each threaded rod is rotatably connected to the clamping plate. A second turntable is fixedly sleeved on the other end of each threaded rod.

[0014] Preferably, the extrusion structure includes a second horizontal plate disposed above the fire extinguisher main body. Both ends of the second horizontal plate are connected with second connecting bars. One end of each second connecting bar is connected to the square frame. A groove is formed in the middle of the lower surface of the second horizontal plate.

[0015] Preferably, the positioning structure includes a rotating shaft rotatably connected to the bottom ends of the mutually remote side surfaces of the two second vertical plates. A fixed disk is fixedly sleeved on the rotating shaft. A vertical bar is connected above the side surface of the fixed disk. A through groove is formed in the vertical bar. A lifting bar is slidably disposed in the through groove. The bottom end of the lifting bar is connected with a positioning bar. Two positioning frames are disposed on the side surface of the second vertical plate around the circumference of the fixed disk. One end of the positioning bar is movably inserted into the positioning frame. The positioning bar movably passes through the fixed disk and the rotating shaft. A second spring is connected between the top end of the lifting bar and the upper groove wall of the through groove. A grip bar is connected between the top ends of the two lifting bars. A reinforcement structure is disposed between the two fixed disks.

[0016] Preferably, the reinforcement structure includes fixed bars connected to the fixed disks. The two fixed bars are connected with a stabilizing plate at the ends remote from the second vertical plates.

[0017] In summary, the present invention includes the following beneficial technical effects:

[0018] 1. By providing a lateral movement structure, a driving structure and an extrusion structure, during fire extinguishing, the fire extinguisher can be directly placed on the ground near the fire scene. Through the lateral movement structure, the fire extinguisher main body is driven to reciprocate horizontally back and forth on the square frame, and in cooperation with the driving structure, the fire extinguisher main body swings up and down reciprocally during the horizontal movement process to carry out fire extinguishing work at various positions of the fire scene. In this way, it is not necessary for the fire extinguishing personnel to hold the fire extinguisher by hand at the fire scene, which not only makes the operation more labor-saving, but also has higher fire extinguishing safety. By providing the extrusion structure, during the movement of the fire extinguisher main body, through the extrusion of the pressing rod of the extrusion structure, the fire extinguisher can be automatically opened for fire extinguishing.

[0019] 2. By providing a positioning structure, a handle and a reinforcement structure, the fire extinguisher main body can be conveniently placed at the fire scene through the handle. By releasing the positioning of the handle through the positioning structure, when the fire extinguisher is opened for fire extinguishing, the stabilizing plate on the reinforcement structure can be driven to support on the ground, so that when the fire extinguisher main body sprays carbon dioxide and foam for fire extinguishing, the support stability of the fire extinguisher can be increased through the stabilizing plate, avoiding the reverse force generated during the process of the fire extinguisher spraying carbon dioxide and foam, and pushing down the fire extinguisher to ensure the normal progress of the fire extinguishing work.

[0020] 3. The present invention is provided with a rotating structure and a lifting structure, which can rotate the square frame and the fire extinguisher main body on the two first vertical plates, and the height of the fire extinguisher main body can be adjusted through the lifting structure. In this way, the fire extinguishing range of the fire extinguisher main body can be flexibly adjusted according to actual needs, making it more convenient to use.

[0021] 4. The present invention is provided with a clamping structure on the installation sleeve, which facilitates the installation, disassembly and replacement of the fire extinguisher main body in the installation sleeve. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of a portable fire extinguisher in an embodiment of the present invention;

[0023] Figure 2 is in an embodiment of the present invention Figure 1 Enlarged view of the structure at A;

[0024] Figure 3 is in an embodiment of the present invention Figure 1 Enlarged view of the structure at B;

[0025] Figure 4 is in an embodiment of the present invention Figure 1 Enlarged view of the structure at C;

[0026] Figure 5 is a schematic structural diagram of the square frame in an embodiment of the present invention;

[0027] Figure 6 is a schematic structural diagram of the inside of the installation sleeve and the slot in an embodiment of the present invention;

[0028] Figure 7 is in an embodiment of the present invention Figure 6 Enlarged view of the structure at D;

[0029] Figure 8 is in an embodiment of the present invention Figure 6 Enlarged view of the structure at E;

[0030] Figure 9 is a schematic structural diagram of the bottom plate in an embodiment of the present invention.

[0031] Description of reference numerals: 1, bottom plate; 2, lifting plate; 3, first vertical plate; 4, cylindrical rod; 5, fire extinguisher main body; 6, pressing rod; 7, moving sleeve; 8, first connecting block; 9, mounting sleeve; 10, second vertical plate; 11, handle; 12, second connecting block; 13, electric telescopic rod; 14, rotating pipe; 15, gear; 16, end block; 17, through bar; 18, driving bar; 19, fixed block; 20, inserting rod; 21, first horizontal plate; 22, driving groove; 23, reinforcing rod; 24, rotating rod; 25, inserting slot; 26, inserting block; 27, first spring; 28, positioning disk; 29, positioning groove; 30, pull rod; 31, bidirectional screw rod; 32, first turntable; 33, moving plate; 34, convex block; 35, curved rod; 36, cross bar; 37, storage groove; 38, clamping plate; 39, threaded pipe; 40, threaded rod; 41, second turntable; 42, square frame; 43, second connecting strip; 44, second horizontal plate; 45, groove; 46, rotating shaft; 47, fixed disk; 48, vertical strip; 49, through slot; 50, lifting strip; 51, holding rod; 52, second spring; 53, positioning strip; 54, positioning frame; 55, fixed strip; 56, stabilizing plate; 57, first connecting strip. Detailed implementation mode

[0032] The following will further describe the present invention in detail with reference to the attached Figures 1-9 drawings.

[0033] Referring to Figures 1-9 , an embodiment of the present invention discloses a portable fire extinguisher, which includes a bottom plate 1 and a fire extinguisher main body 5. A lifting plate 2 is arranged above the bottom plate 1 through a lifting structure. First vertical plates 3 are fixedly connected to the middle of the front and rear edges of the upper surface of the lifting plate 2 by bolts. A square frame 42 is arranged between the two first vertical plates 3 through a rotating structure. Second vertical plates 10 are connected to the middle of the front and rear edges of the upper surface of the bottom plate 1. A handle 11 is arranged between the two second vertical plates 10 through a positioning structure;

[0034] A mounting sleeve 9 is arranged on the square frame 42 through a lateral movement structure. The fire extinguisher main body 5 is arranged in the mounting sleeve 9 through a clamping structure. A pressing rod 6 is arranged at the top of the fire extinguisher main body 5. An extrusion structure is arranged above the fire extinguisher main body 5;

[0035] The lateral movement structure includes a cylindrical rod 4 fixedly connected between the inner walls of the front and rear sides of the square frame 42. A rotating pipe 14 is movably sleeved on the cylindrical rod 4. A moving sleeve 7 is rotatably sleeved in the middle of the rotating pipe 14. A first connecting block 8 is welded on one side of the moving sleeve 7. One end of the first connecting block 8 is welded on the mounting sleeve 9. A second connecting block 12 is welded on the other side of the moving sleeve 7. A driving structure is arranged on the second connecting block 12. An electric telescopic rod 13 is installed at the edge of the rear side of the square frame 42. One end of the output shaft of the electric telescopic rod 13 is connected to the moving sleeve 7. One end of the second connecting block 12 movably passes through the reinforcing rod 23. Both ends of the reinforcing rod 23 are connected to the square frame 42;

[0036] The driving structure includes a first connecting bar 57 connected to the upper and lower side surfaces of the second connecting block 12. One end of the first connecting bar 57 is provided with an end block 16. A through bar 17 passes through the two end blocks 16 movably. A driving bar 18 is arranged on the side surface of the through bar 17 close to the rotating pipe 14. A gear 15 is fixedly sleeved on the front end of the rotating pipe 14. Teeth meshing with the gear 15 are arranged on the driving bar 18. The bottom end of the through bar 17 is connected to a fixed block 19. A plug rod 20 fixedly passes through the fixed block 19. The right side surface of the square frame 42 is connected to a first cross plate 21 at a position below the second connecting block 12. A driving groove 22 is formed on the first cross plate 21. One end of the plug rod 20 movably passes through the driving groove 22;

[0037] The extrusion structure includes a second cross plate 44 arranged above the fire extinguisher main body 5. Both ends of the second cross plate 44 are connected with second connecting bars 43. One end of the second connecting bar 43 is connected to the square frame 42. A groove 45 is formed in the middle of the lower surface of the second cross plate 44. During fire extinguishing, the fire fighter can directly place the fire extinguisher at the fire scene through the handle 11, and start the electric telescopic rod 13. The fire fighter can directly leave the scene. In this way, the electric telescopic rod 13 drives the whole moving sleeve 7 and the rotating pipe 14 to move on the cylindrical rod 4, so as to drive the fire extinguisher main body 5 to move back and forth. Moreover, the movement of the moving sleeve 7 drives one end of the plug rod 20 to slide in the driving groove 22 of the first cross plate 21, driving the whole through bar 17 and the driving bar 18 to move up and down on the end block 16, and driving the fire extinguisher main body 5 to swing up and down through the gear 15. At the same time, the pressure bar 6 on the fire extinguisher main body 5 is squeezed and rotated by the second cross plate 44, and the fire extinguisher main body 5 is opened to automatically carry out fire extinguishing work on various positions of the fire scene;

[0038] The clamping structure includes two receiving grooves 37 formed in the mounting sleeve 9. Threaded pipes 39 are connected to the outer side surface of the mounting sleeve 9 at the positions of the two receiving grooves 37. A threaded rod 40 rotatably passes through the threaded pipe 39. A clamping plate 38 is arranged in the receiving groove 37. One end of the threaded rod 40 is rotatably connected to the clamping plate 38. A second turntable 41 is fixedly sleeved on the other end of the threaded rod 40. When the second turntable 41 is used to rotate the threaded rod 40 to drive the clamping plate 38 to disengage from the fire extinguisher main body 5, the fire extinguisher main body 5 can be loosened in the mounting sleeve 9, which facilitates the replacement work of the fire extinguisher main body 5 in the mounting sleeve 9.

[0039] See Figure 1 、 Figure 5 、 Figure 8 and Figure 9, the rotating structure includes a rotating rod 24 connected to the middle of the outer surfaces of the front and rear sides of the square frame 42. One end of the rotating rod 24 is rotatably connected to the second vertical plate 10. A slot 25 is provided on the front end surface of the front rotating rod 24. An insertion block 26 is movably inserted into the slot 25. The insertion block 26 and the end surface of the slot 25 are both square-shaped. A first spring 27 is connected between one end of the insertion block 26 and the inner end wall of the slot 25. A positioning disk 28 is installed at the other end of the insertion block 26. The end surface of the positioning disk 28 is polygonal. A positioning groove 29 is provided on the front surface of the front second vertical plate 10. The positioning disk 28 is movably inserted into the positioning groove 29. A pull rod 30 is connected to the middle of one side surface of the positioning disk 28;

[0040] The lifting structure includes a bidirectional screw rod 31 that rotates horizontally through the middle of the bottom plate 1. First turntables 32 are fixedly sleeved on both ends of the bidirectional screw rod 31. The thread directions of the left and right sections of the bidirectional screw rod 31 are opposite. Moving plates 33 are sleeved on both ends of the bidirectional screw rod 31. A threaded groove for the bidirectional screw rod 31 to pass through is provided in the middle of the moving plate 33. Cross bars 36 are connected to the front side edges between the inner walls on the left and right sides of the bottom plate 1. Through holes for the cross bars 36 to movably pass through are provided at the ends of the moving plates 33. Protrusions 34 are provided at the front and rear ends on the upper surface of the moving plates 33. A curved rod 35 is rotatably connected to the protrusion 34. The top end of the curved rod 35 is rotatably connected to the lifting plate 2. Before extinguishing the fire, according to the actual needs, the positioning disk 28 can be pulled out of the positioning groove 29 by using the pull rod 30, stretching the first spring 27, releasing the positioning of the square frame 42 on the first vertical plate 3, and then rotating the square frame 42 and the fire extinguisher main body 5 as a whole on the first vertical plate 3 to adjust the position of the fire extinguisher main body 5. The bidirectional screw rod 31 can also be rotated by using the first turntable 32. The two moving plates 33 move towards the middle on the bidirectional screw rod 31. Through the curved rod 35, the height of the fire extinguisher main body 5 can be adjusted. In this way, the fire extinguishing range of the fire extinguisher main body 5 can be flexibly adjusted, making it more convenient to use.

[0041] See Figures 1-3 , the positioning structure includes a rotating shaft 46 rotatably connected to the bottom ends of the mutually remote side surfaces of the two second vertical plates 10. A fixed disk 47 is fixedly sleeved on the rotating shaft 46. A vertical bar 48 is connected above the side surface of the fixed disk 47. A through groove 49 is provided on the vertical bar 48. A lifting bar 50 is slidably arranged in the through groove 49. A positioning bar 53 is connected to the bottom end of the lifting bar 50. Two positioning frames 54 are provided on the side surface of the second vertical plate 10 around the circumference of the fixed disk 47. One end of the positioning bar 53 is movably inserted into the positioning frame 54. The positioning bar 53 movably passes through the fixed disk 47 and the rotating shaft 46. A second spring 52 is connected between the top end of the lifting bar 50 and the upper groove wall of the through groove 49. A grip bar 51 is connected between the top ends of the two lifting bars 50. A reinforcement structure is provided between the two fixed disks 47;

[0042] The reinforcement structure includes a fixing strip 55 connected to the fixing plate 47. One end of the two fixing strips 55 away from the second vertical plate 10 is connected to a stabilizing plate 56. After the fire extinguisher is placed at the fire scene through the handle 11, when the handle 11 pulls the grip rod 51, the lifting strip 50 moves upward in the through groove 49, and one end of the positioning strip 53 is pulled out from the corresponding positioning frame 54. The second vertical plate 10 releases the positioning of the vertical strip 48 and the handle 11. Then, by rotating the rotating shaft 46, the handle 11 is rotated down from above the square frame 42 to prevent the handle 11 from interfering with the adjustment of the position of the fire extinguisher body 5. When the vertical strip 48 rotates, the stabilizing plate 56 at one end of the fixing strip 55 is rotated down to support on the ground, increasing the support stability of the fire extinguisher during the fire extinguishing process and preventing the fire extinguisher from tipping over during the fire extinguishing process.

[0043] The implementation principle of an embodiment of the portable fire extinguisher of the present invention is as follows: First, when the handle 11 pulls the grip rod 51, the lifting strip 50 moves upward in the through groove 49, and one end of the positioning strip 53 is pulled out from the corresponding positioning frame 54. The second vertical plate 10 releases the positioning of the vertical strip 48 and the handle 11. Then, by rotating the rotating shaft 46, the handle 11 is rotated down from above the square frame 42 to prevent the handle 11 from interfering with the adjustment of the position of the fire extinguisher body 5. When the vertical strip 48 rotates, the stabilizing plate 56 at one end of the fixing strip 55 is rotated down to support on the ground, increasing the support stability of the fire extinguisher and preventing the fire extinguisher from tipping over during the fire extinguishing process. Next, the electric telescopic rod 13 is started, and the fire extinguishing personnel can directly leave the scene. In this way, the electric telescopic rod 13 drives the moving sleeve 7 and the rotating pipe 14 as a whole to move on the cylindrical rod 4, driving the fire extinguisher body 5 to move back and forth. The movement of the moving sleeve 7 drives one end of the inserting rod 20 to slide in the driving groove 22 of the first cross plate 21, driving the through strip 17 and the driving strip 18 as a whole to move up and down on the end block 16, driving the fire extinguisher body 5 to swing up and down through the gear 15. At the same time, the pressing rod 6 on the fire extinguisher body 5 is rotated by the extrusion of the second cross plate 44, opening the fire extinguisher body 5 to automatically extinguish fires at various positions at the fire scene, and the fire extinguishing work is safer.

[0044] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A portable fire extinguisher, comprising a bottom plate (1) and a fire extinguisher main body (5), characterized in that: Above the bottom plate (1), a lifting plate (2) is arranged through a lifting structure. At the middle of the front and rear edges of the upper surface of the lifting plate (2), first vertical plates (3) are fastened by bolts on both sides. Between the two first vertical plates (3), a square frame (42) is arranged through a rotating structure. At the middle of the front and rear edges of the upper surface of the bottom plate (1), second vertical plates (10) are connected on both sides. Between the two second vertical plates (10), a handle (11) is arranged through a positioning structure; On the square frame (42), an installation sleeve (9) is arranged through a transverse movement structure. Inside the installation sleeve (9), a fire extinguisher main body (5) is arranged through a clamping structure. At the top end of the fire extinguisher main body (5), a pressure lever (6) is arranged. Above the fire extinguisher main body (5), an extrusion structure is arranged; The transverse movement structure includes a cylindrical rod (4) fixedly connected between the inner walls of the front and rear sides of the square frame (42). A rotating pipe (14) is movably sleeved on the cylindrical rod (4). A moving sleeve (7) is rotatably sleeved at the middle of the rotating pipe (14). On one side of the moving sleeve (7), a first connecting block (8) is welded. One end of the first connecting block (8) is welded on the installation sleeve (9). On the other side of the moving sleeve (7), a second connecting block (12) is welded. A driving structure is arranged on the second connecting block (12). An electric telescopic rod (13) is installed at the edge of the rear side surface of the square frame (42). One end of the output shaft of the electric telescopic rod (13) is connected to the moving sleeve (7). One end of the second connecting block (12) movably passes through a reinforcing rod (23). Both ends of the reinforcing rod (23) are connected to the square frame (42).

2. The portable fire extinguisher according to claim 1, characterized in that: The driving structure includes first connecting strips (57) connected to the upper and lower side surfaces of the second connecting block (12). At one end of the first connecting strip (57), end blocks (16) are arranged. A through strip (17) movably passes through the two end blocks (16). A driving strip (18) is arranged on the side surface of the through strip (17) close to the rotating pipe (14). A gear (15) is fixedly sleeved on the front end of the rotating pipe (14). Teeth meshing with the gear (15) are arranged on the driving strip (18). The bottom end of the through strip (17) is connected to a fixed block (19). A plug rod (20) fixedly passes through the fixed block (19). A first horizontal plate (21) is connected to the right side surface of the square frame (42) at the position below the second connecting block (12). A driving groove (22) is formed on the first horizontal plate (21). One end of the plug rod (20) movably passes through the driving groove (22).

3. A portable fire extinguisher according to claim 1, characterized in that: The rotating structure includes a rotating rod (24) connected to the middle of the outer surfaces of the front and rear sides of the square frame (42). One end of the rotating rod (24) is rotatably connected to the second vertical plate (10). A slot (25) is formed on the front end face of the front rotating rod (24). An insertion block (26) is movably inserted into the slot (25). The end faces of the insertion block (26) and the slot (25) are both square-shaped. A first spring (27) is connected between one end of the insertion block (26) and the inner end wall of the slot (25). A positioning disk (28) is installed at the other end of the insertion block (26). The end face of the positioning disk (28) is polygonal. A positioning groove (29) is formed on the front surface of the front second vertical plate (10). The positioning disk (28) is movably inserted into the positioning groove (29). A pull rod (30) is connected to the middle of one side face of the positioning disk (28).

4. A portable fire extinguisher according to claim 1, characterized in that: The lifting structure includes a bidirectional screw rod (31) rotatably passing through the middle of the bottom plate (1) horizontally. First turntables (32) are fixedly sleeved on both ends of the bidirectional screw rod (31). The thread directions of the left and right sections of the bidirectional screw rod (31) are opposite. Moving plates (33) are sleeved on both ends of the bidirectional screw rod (31). A thread groove for the bidirectional screw rod (31) to pass through is formed in the middle of the moving plate (33). Cross bars (36) are connected to the front side edges between the inner walls on the left and right sides of the bottom plate (1). Through holes for the cross bars (36) to movably pass through are formed at the ends of the moving plate (33). Protrusions (34) are arranged at the front and rear ends on the upper surface of the moving plate (33). A curved rod (35) is rotatably connected to the protrusion (34). The top end of the curved rod (35) is rotatably connected to the lifting plate (2).

5. A portable fire extinguisher according to claim 1, characterized in that: The clamping structure includes two storage grooves (37) formed in the mounting sleeve (9). Threaded tubes (39) are connected to the outer side surface of the mounting sleeve (9) at the positions of the two storage grooves (37). A threaded rod (40) rotatably passes through the threaded tube (39). A clamping plate (38) is arranged in the storage groove (37). One end of the threaded rod (40) is rotatably connected to the clamping plate (38). A second turntable (41) is fixedly sleeved on the other end of the threaded rod (40).

6. The portable fire extinguisher according to claim 1, wherein: The extrusion structure includes a second horizontal plate (44) arranged above the fire extinguisher main body (5). Second connecting bars (43) are connected to both ends of the second horizontal plate (44). One end of the second connecting bar (43) is connected to the square frame (42). A groove (45) is formed in the middle of the lower surface of the second horizontal plate (44).

7. A portable fire extinguisher according to claim 1, characterized in that: The positioning structure includes a rotating shaft (46) rotatably connected to the bottom ends of the mutually remote side surfaces of two second vertical plates (10). A fixed disk (47) is fixedly sleeved on the rotating shaft (46). A vertical bar (48) is connected above the side surface of the fixed disk (47). A through groove (49) is formed in the vertical bar (48). A lifting bar (50) is slidably arranged in the through groove (49). A positioning bar (53) is connected to the bottom end of the lifting bar (50). Two positioning frames (54) are arranged on the side surface of the second vertical plate (10) at the peripheral side of the fixed disk (47). One end of the positioning bar (53) is movably inserted into the positioning frame (54). The positioning bar (53) movably passes through the fixed disk (47) and the rotating shaft (46). A second spring (52) is connected between the top end of the lifting bar (50) and the upper groove wall of the through groove (49). A grip bar (51) is connected between the top ends of the two lifting bars (50). A reinforcement structure is arranged between the two fixed disks (47).

8. A portable fire extinguisher according to claim 7, characterized in that: The reinforcement structure includes fixed bars (55) connected to the fixed disk (47). The remote ends of the two fixed bars (55) from the second vertical plate (10) are connected to a stabilizing plate (56).

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