A convenient mobile device for a cart-type dry powder fire extinguisher

Abstract

The present invention relates to the technical field of cart-type fire extinguishers, specifically a convenient mobile device for a cart-type dry powder fire extinguisher, comprising a base, a placing seat is arranged on the top of the base, a lifting plate is installed at the bottom of the placing seat, a fixed shaft is fixedly connected to the bottom of the lifting plate, a limiting pin is arranged on the side wall of the fixed shaft, a rotating sleeve is rotated at the bottom of the inner cavity of the base, a spiral groove is opened on the inner wall of the rotating sleeve, a rotating rod is rotatably connected to the top of the base, and a clamp is fixedly connected to the outer wall of the rotating rod. When the fire extinguisher of the present invention is installed, the fire extinguisher is pressed downward to make the lifting plate, the placing seat and the fixed shaft slide downward, and then the rotating sleeve is driven to rotate a certain angle through the cooperation of the limiting pin, the rotating sleeve and the spiral groove, so as to drive the rack to slide, so that the rotating gears, the rotating rod and the clamp on both sides are driven to rotate through the rack, so that the clamps on both sides clamp and clamp the fire extinguisher, and finally the fire extinguisher is clamped and fixed, and the whole installation process only needs to press down the fire extinguisher to fix the fire extinguisher.

Description

Technical Field

[0001] The invention relates to the technical field of cart-type fire extinguishers, in particular to a convenient mobile device for a cart-type dry powder fire extinguisher. Background Art

[0002] The trolley-type fire extinguisher is installed on a trolley so that it can be easily moved. The existing method of installing the fire extinguisher on the trolley is to install it by locking and fixing it with a clamp, and in order to ensure the stability of the installation of the fire extinguisher, multiple sets of clamps are used for locking and fixing. This fixing method makes the disassembly and assembly of the fire extinguisher inconvenient, affecting the replacement efficiency. In addition, when some small spaces and environments where the trolley is difficult to enter catch fire, the fire extinguisher cannot be quickly removed for use, which affects the fire extinguishing efficiency and easily causes danger. To this end, the present invention has developed a convenient mobile device for a trolley-type dry powder fire extinguisher to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a convenient mobile device for a trolley-type dry powder fire extinguisher, which can quickly disassemble and assemble the fire extinguisher.

[0004] To achieve the above object, the first technical solution provided by the present invention is:

[0005] A convenient mobile device for a cart-type dry powder fire extinguisher comprises a base with moving wheels, a fixing rod is symmetrically arranged on two opposite sides at one end of the top of the base, a cart handle is connected between the tops of the two fixing rods, a placement seat for placing the fire extinguisher is slidably connected through the top of the base, a lifting plate is installed at the bottom of the placement seat, a fixing shaft is fixedly connected to the bottom of the lifting plate, a limiting pin is arranged on the side wall of the fixing shaft, an internal hollow rotating sleeve is rotatably connected to the bottom of the inner cavity of the base, a spiral groove which cooperates with the limiting pin is opened on the inner wall of the rotating sleeve, a fixing plate is fixedly connected to the outer wall of the rotating sleeve, a first connecting rod is hingedly connected to the top of the fixing plate through a pin shaft, a second connecting rod is hingedly connected to the free end of the first connecting rod, and racks are symmetrically fixedly connected to the opposite sides of the second connecting rod;

[0006] The top of the base is rotatably connected with a rotating rod, and the rotating rod is located inside the fixed rod. The bottom of the rotating rod passes through the lifting plate and is installed with a rotating gear that meshes with the rack. The outer wall of the rotating rod is fixed with a plurality of hoops along the height direction. The side wall of the end of the lifting plate is provided with an elastic limiting column, and the side wall of the base is provided with a limiting hole that cooperates with the elastic limiting column.

[0007] Preferably, a plurality of fixing columns are fixedly connected between the top and the bottom of the inner cavity of the base, the outer wall of the fixing column is sleeved with a first spring, and the first spring is located below the lifting plate.

[0008] Preferably, a placement groove that cooperates with the bottom of the fire extinguisher is provided on the top of the placement seat, and abutment columns are slidably connected to the side walls of the placement groove at equal angles, and an extrusion block is provided at one end of the abutment column located outside the placement groove, and a second spring is sleeved on the outer wall of the abutment column, and the second spring is located on the outer wall of the placement groove. A through hole that cooperates with the placement seat is provided on the top of the base, and when the fire extinguisher is installed in place, the extrusion block abuts against the inner wall of the through hole.

[0009] Preferably, a piston sleeve is provided at the bottom of the inner cavity of the base, a piston block is slidably connected between the side walls of the inner cavity of the piston sleeve, one end of the second connecting rod is inserted into the inner cavity of the piston sleeve and connected to the piston block, and the two opposite side walls of the piston sleeve are symmetrically connected with air outlet pipes, and the air outlet ends of the two air outlet pipes are respectively connected to the bottom of the two rotating rods and rotatably connected, the rotating rod and the inner cavity of the clamp are both hollow structures, and the rotating rod and the clamp are connected, and an airbag is provided on the side of the clamp close to the fire extinguisher.

[0010] Preferably, a pressure relief hole is formed at one end of the piston sleeve away from the second connecting rod, and a blocking column is slidably connected to the inner cavity of the pressure relief hole. One end of the blocking column passes through the side wall of the base and is installed with a limiting block, and the limiting block is located below the limiting hole. A third spring is sleeved on the outer wall of the blocking column, and the third spring is located outside the base.

[0011] Preferably, the cross-sectional shape of the pressure relief hole is trumpet-shaped, and the end of the pressure relief hole close to the piston block has a large diameter, and the cross-sectional shape of the blocking column is adapted to the pressure relief hole.

[0012] Preferably, the side wall of the base is provided with an unlocking component for pressing the limit block, the unlocking component includes two fixed blocks, a rotating shaft is rotatably connected between the two fixed blocks, a pedal is fixedly connected to the outer wall of the rotating shaft, and a pressing block that cooperates with the limit block is provided on one side wall of the pedal close to the base.

[0013] Preferably, a side surface of the pedal close to the base is further provided with an extrusion column for extruding the elastic limiting column to cooperate with each other, and the extrusion column and the pressing block are respectively located on both sides of the rotating shaft.

[0014] Preferably, connecting blocks are symmetrically fixed to the outer walls at both ends of the rotating shaft, a torsion spring is sleeved on the outer wall of the rotating shaft between the connecting block and the fixed block on the same side, and both ends of the torsion spring are respectively fixed to the connecting block and the fixed block.

[0015] Preferably, a hanging rod for hanging the jet pipe of the fire extinguisher is provided on one side of the two fixing rods away from the fire extinguisher.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] When installing the fire extinguisher of the present invention, the fire extinguisher is placed on the placement seat and the fire extinguisher is pressed downward to make the lifting plate, the placement seat and the fixed shaft slide downward, and then the rotating sleeve is driven to rotate a certain angle through the cooperation of the limit pin, the rotating sleeve and the spiral groove, so that the second connecting rod and the rack are driven to slide through the fixed plate and the first connecting rod, so that the rotating gear, the rotating rod and the clamp on both sides are driven to rotate through the rack, so that the clamp on both sides clamps the fire extinguisher, and the elastic limit column is inserted into the limit hole at this time to keep the lifting plate and the placement seat fixed, so as to finally realize the clamping and fixing of the fire extinguisher. The entire installation process only needs to press down the fire extinguisher to achieve the fixation of the fire extinguisher, and the installation process is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a schematic structural diagram of the cart-type dry powder fire extinguisher of the present invention from a first angle;

[0020] Figure 2 It is a schematic structural diagram of the cart-type dry powder fire extinguisher from a second angle of the present invention;

[0021] Figure 3 It is a partial front cross-sectional structural schematic diagram of the cart-type dry powder fire extinguisher of the present invention;

[0022] Figure 4 for Figure 3 A schematic diagram of the structure enlargement at the center A;

[0023] Figure 5 for Figure 3 A schematic diagram of the structure enlarged at B in the middle;

[0024] Figure 6 It is a schematic diagram of the top cross-section structure of the cart-type dry powder fire extinguisher of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the piston sleeve and its connecting parts in the cart-type dry powder fire extinguisher of the present invention;

[0026] Figure 8 It is a schematic diagram of the front cross-section structure of the piston sleeve in the cart-type dry powder fire extinguisher of the present invention.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Base; 2. Fixed rod; 3. Trolley handle; 4. Placement seat; 5. Lifting plate; 6. Fixed shaft; 7. Limit pin; 8. Rotating sleeve; 9. Spiral groove; 10. Fixed plate; 11. First connecting rod; 12. Second connecting rod; 13. Rack; 14. Rotating rod; 15. Rotating gear; 16. Hoop; 17. Elastic limit column; 18. Fixed column; 19. First spring; 20. Placement groove; 21. Connecting column; 22, extrusion block; 23, second spring; 24, piston sleeve; 25, piston block; 26, exhaust pipe; 27, air bag; 28, pressure relief hole; 29, blocking column; 30, limit block; 31, third spring; 32, unlocking assembly; 321, fixing block; 322, rotating shaft; 323, pedal; 324, pressing block; 325, extrusion column; 326, connecting block; 327, torsion spring; 33, hanging rod. DETAILED DESCRIPTION

[0029] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0030] like Figure 1-8 As shown: One embodiment of the present invention is:

[0031] A convenient mobile device for a cart-type dry powder fire extinguisher, comprising a base 1 with moving wheels, a fixing rod 2 is symmetrically arranged on two opposite sides of one end of the top of the base 1, a cart handle 3 is connected between the tops of the two fixing rods 2, a placement seat 4 for placing the fire extinguisher is slidably connected through the top of the base 1, a lifting plate 5 is installed at the bottom of the placement seat 4, a fixing shaft 6 is fixedly connected to the bottom of the lifting plate 5, and a limiting pin 7 is arranged on the side wall of the fixing shaft 6, an internal hollow rotating sleeve 8 is rotatably connected to the bottom of the inner cavity of the base 1, a spiral groove 9 that cooperates with the limiting pin 7 is opened on the inner wall of the rotating sleeve 8, a fixing plate 10 is fixedly connected to the outer wall of the rotating sleeve 8, a first connecting rod 11 is hinged to the top of the fixing plate 10 through a pin shaft, a second connecting rod 12 is hinged to the free end of the first connecting rod 11, and racks 13 are symmetrically fixed to the opposite sides of the second connecting rod 12;

[0032] A rotating rod 14 is rotatably connected to the top of the base 1, and the rotating rod 14 is located inside the fixed rod 2. The bottom of the rotating rod 14 passes through the lifting plate 5 and is installed with a rotating gear 15 that meshes with the rack 13. A plurality of hoops 16 are fixedly connected to the outer wall of the rotating rod 14 along the height direction. An elastic limiting column 17 is provided on the side wall at the end of the lifting plate 5, and a limiting hole that cooperates with the elastic limiting column 17 is opened on the side wall of the base 1.

[0033] In this embodiment, in order to achieve automatic rebound of the lifting plate after the elastic limiting column is separated from the limiting hole, a plurality of fixing columns 18 are fixedly connected between the top and bottom of the inner cavity of the base 1, and a first spring 19 is sleeved on the outer wall of the fixing column 18, and the first spring 19 is located below the lifting plate 5.

[0034] In this embodiment, in order to facilitate the positioning of the installation position of the fire extinguisher and further fix the fire extinguisher, a placement groove 20 that cooperates with the bottom of the fire extinguisher is opened on the top of the placement seat 4, and an abutment column 21 is slidably connected to the side wall of the placement groove 20 at equal angles. An extrusion block 22 is provided at one end of the abutment column 21 located outside the placement groove 20, and a second spring 23 is sleeved on the outer wall of the abutment column 21, and the second spring 23 is located on the outer wall of the placement groove 20. A through hole that cooperates with the placement seat 4 is opened on the top of the base 1, and when the fire extinguisher is installed in place, the extrusion block 22 abuts against the inner wall of the through hole. When the fire extinguisher is installed, the fire extinguisher is placed in the placement groove for quick positioning, and then the fire extinguisher is pressed downward, so that the extrusion block is squeezed by the inner wall of the through hole to push the abutment column out, so that the abutment column abuts against the outer wall of the fire extinguisher for limiting and further fixing.

[0035] In this embodiment, in order to make the clamp and the fire extinguisher have soft contact and to make the clamp fit tightly with the fire extinguisher to ensure that there is no shaking after being fixed, a piston sleeve 24 is provided at the bottom of the inner cavity of the base 1, and a piston block 25 is slidably connected between the side walls of the inner cavity of the piston sleeve 24. One end of the second connecting rod 12 is inserted into the inner cavity of the piston sleeve 24 and connected to the piston block 25. The opposite side walls of the piston sleeve 24 are symmetrically connected with air outlet pipes 26, and the air outlet ends of the two air outlet pipes 26 are respectively connected to the bottom of the two rotating rods 14 and rotatably connected. The inner cavities of the rotating rod 14 and the clamp 16 are both hollow structures, and the rotating rod 14 and the clamp 16 are connected. An air bag 27 is provided on the side of the clamp 16 close to the fire extinguisher, wherein when the fire extinguisher is pressed down, the sliding of the second connecting rod can push the piston block to slide, so that the gas in the piston sleeve is injected into the rotating rod and filled into the air bag through the clamp, so that the air bag swells and clings to the surface of the fire extinguisher.

[0036] In this embodiment, in order to ensure that the airbag will not interfere with the upward sliding of the fire extinguisher when the fire extinguisher is disassembled, and to provide a certain space for the upward sliding of the fire extinguisher so that the fire extinguisher can slide upward smoothly, a pressure relief hole 28 is opened at the end of the piston sleeve 24 away from the second connecting rod 12, and a blocking column 29 is slidably connected to the inner cavity of the pressure relief hole 28. One end of the blocking column 29 passes through the side wall of the base 1 and is installed with a limiting block 30, and the limiting block 30 is located below the limiting hole. The outer wall of the blocking column 29 is sleeved with a third spring 31, and the third spring 31 is located outside the base 1. When the fire extinguisher is to be disassembled, the limiting block is first pressed to drive the blocking column to separate from the pressure relief hole, so that the gas in the piston sleeve can flow out along the pressure relief hole, reduce the air pressure inside the piston sleeve, and deflate the airbag, so that the airbag shrinks and separates from the surface of the fire extinguisher, ensuring that there is a certain gap between the fire extinguisher and the clamp for the fire extinguisher to slide up and down.

[0037] In this embodiment, the cross-sectional shape of the pressure relief hole 28 is trumpet-shaped, and the end of the pressure relief hole 28 close to the piston block 25 has a large diameter. The cross-sectional shape of the blocking column 29 is compatible with the pressure relief hole 28, wherein the trumpet-shaped pressure relief hole can play a role in limiting the blocking column.

[0038] In the present embodiment, in order to facilitate the pressure relief of the piston sleeve, an unlocking component 32 for pressing the limit block 30 is provided on the side wall of the base 1. The unlocking component 32 includes two fixed blocks 321. A rotating shaft 322 is rotatably connected between the two fixed blocks 321. A pedal 323 is fixedly connected to the outer wall of the rotating shaft 322. A pressing block 324 that cooperates with the limit block 30 is provided on a side wall of the pedal 323 close to the base 1. When pressure relief is required, the operator only needs to step on the pedal to flip the pedal, so that the pressing block can contact and push the limit block, thereby finally realizing the pressure relief operation of the piston sleeve.

[0039] In this embodiment, in order to further facilitate the unlocking of the lifting plate and simplify the operation of the equipment, a side of the pedal 323 close to the base 1 is also provided with an extrusion column 325 for extruding the elastic limit column 17 to cooperate with each other, and the extrusion column 325 and the pressing block 324 are respectively located on both sides of the rotating shaft 322, wherein stepping on the pedal downward can realize the pressure relief of the piston sleeve, while stepping on the pedal upward can drive the extrusion column to insert into the limit hole and squeeze the elastic limit column, so that the elastic limit column is separated from the limit hole.

[0040] In this embodiment, in order to ensure that the rotating shaft can maintain a fixed angle when it is stationary and automatically return to its original position after each pedaling, the outer walls of the two ends of the rotating shaft 322 are symmetrically fixed with connecting blocks 326, and the outer wall of the rotating shaft 322 between the connecting block 326 and the fixed block 321 on the same side is provided with a torsion spring 327, and the two ends of the torsion spring 327 are respectively fixed to the connecting block 326 and the fixed block 321, wherein the torsion resistance of the torsion spring can ensure that the pedal maintains a fixed angle when it is stationary, and can quickly return to its original position through the action of the restoring force after pedaling is completed.

[0041] In this embodiment, a hanging rod 33 for hanging the jet pipe of the fire extinguisher is provided on one side of the two fixing rods 2 away from the fire extinguisher. The setting of the hanging rod can facilitate the arrangement of the jet pipe of the fire extinguisher to avoid winding.

[0042] In this embodiment, a U-shaped support rod is further provided at the front end of the base 1 .

[0043] The specific working process of this embodiment is as follows:

[0044] When installing the fire extinguisher, place the bottom of the fire extinguisher in the placement groove 20, then press the fire extinguisher downward to push the placement seat 4, the lifting plate 5 and the fixed shaft 6 down, wherein the elastic limit column 17 of the side wall of the lifting plate 5 abuts against the inner wall of the base 1, and the fixed shaft 6 descends through the cooperation between the limit pin 7 and the spiral groove 9 to drive the rotating sleeve 8 to rotate a certain angle, thereby driving the fixed plate 10 and the first connecting rod 11 to rotate, and driving the second connecting rod 12 and the rack 13 to slide, wherein the rack 13 drives the rotating gear 15 (and the rotating gear 15 and the rack 13 can be connected through a transition gear The second connecting rod 12 can synchronously push the piston block 25 to slide, so that the gas in the piston sleeve 24 is compressed and injected into the rotating rod 14 and the hoop 16 through the outlet pipe 26, and finally filled into the airbag 27, so that the airbag 27 swells; when the fire extinguisher is pressed to the bottom, the elastic limiting column 17 on the side wall of the lifting plate 5 is aligned with the limiting hole and inserted into the limiting hole, so that the height of the lifting plate 5 is kept fixed, and the airbag 27 is in close contact with the surface of the fire extinguisher to complete the fixation of the fire extinguisher.

[0045] When the fire extinguisher needs to be disassembled, the operator first steps on the pedal 323 to rotate the pedal 323 and the rotating shaft 322 downward, so that the pressing block 324 contacts the limit block 30 and squeezes the limit block 30, so that the limit block 30 and the blocking column 29 slide, so that one end of the blocking column 29 is separated from the pressure relief hole 28 to open the pressure relief hole 28, and the gas inside the piston sleeve 24 can flow out along the pressure relief hole 28, thereby achieving pressure relief, so that the airbag 27 shrinks and there is a gap between the fire extinguisher (after the pedal 323 is released, the limit block 30 is restored by the third spring 31 The first spring 19 is used to move the piston block 25 and the second spring 19 is used to move the piston block 25 and the second spring 19 is used to move the piston block 25 and the second spring 19 is used to move the piston block 25 and the second spring 19 is used to move the piston block 25 and the second spring 19 is used to move the piston block 25 and the second spring 19 is used to move the piston block 25 and the second spring 19.

[0046] After the fire extinguisher rises to the highest position, the abutment 21 returns to its original position under the action of the restoring force of the second spring 23, and is out of contact with the fire extinguisher, and finally the fire extinguisher can be removed.

[0047] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0048] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A convenient mobile device for a cart-type dry powder fire extinguisher, characterized in that: The invention comprises a base (1) with movable wheels, wherein a fixing rod (2) is symmetrically arranged on two opposite sides of the top end of the base (1), a trolley handle (3) is connected between the tops of the two fixing rods (2), a placement seat (4) for placing a fire extinguisher is slidably connected through the top of the base (1), a lifting plate (5) is installed at the bottom of the placement seat (4), a fixing shaft (6) is fixedly connected to the bottom of the lifting plate (5), a limit pin (7) is arranged on the side wall of the fixing shaft (6), an internal hollow rotating sleeve (8) is rotatably connected to the bottom of the inner cavity of the base (1), a spiral groove (9) cooperating with the limit pin (7) is opened on the inner wall of the rotating sleeve (8), a fixing plate (10) is fixedly connected to the outer wall of the rotating sleeve (8), a first connecting rod (11) is hingedly connected to the top of the fixing plate (10) through a pin shaft, a second connecting rod (12) is hingedly connected to the free end of the first connecting rod (11), and racks (13) are symmetrically fixedly connected to the opposite sides of the second connecting rod (12); The top of the base (1) is rotatably connected to a rotating rod (14), and the rotating rod (14) is located inside the fixed rod (2); the bottom of the rotating rod (14) passes through the lifting plate (5) and is provided with a rotating gear (15) meshing with the rack (13); the outer wall of the rotating rod (14) is fixedly connected to a plurality of hoops (16) along the height direction; the side wall of the end of the lifting plate (5) is provided with an elastic limiting column (17); and the side wall of the base (1) is provided with a limiting hole that cooperates with the elastic limiting column (17); A piston sleeve (24) is provided at the bottom of the inner cavity of the base (1), a piston block (25) is slidably connected between the side walls of the inner cavity of the piston sleeve (24), one end of the second connecting rod (12) is inserted into the inner cavity of the piston sleeve (24) and connected to the piston block (25), air outlet pipes (26) are symmetrically connected to the opposite side walls of the piston sleeve (24), and the air outlet ends of the two air outlet pipes (26) are respectively connected to the bottoms of the two rotating rods (14) and are rotatably connected, the inner cavities of the rotating rod (14) and the clamp (16) are both hollow structures, and the rotating rod (14) and the clamp (16) are connected, and an air bag (27) is provided on a side of the clamp (16) close to the fire extinguisher.

2. A convenient mobile device for a trolley-type dry powder fire extinguisher according to claim 1, characterized in that: A plurality of fixing columns (18) are fixedly connected between the top and bottom of the inner cavity of the base (1), and a first spring (19) is sleeved on the outer wall of the fixing column (18), and the first spring (19) is located below the lifting plate (5).

3. A convenient mobile device for a trolley-type dry powder fire extinguisher according to claim 1, characterized in that: The top of the placement seat (4) is provided with a placement groove (20) which cooperates with the bottom of the fire extinguisher, and the side wall of the placement groove (20) is slidably connected with an abutment column (21) at an equal angle, and an extrusion block (22) is provided at one end of the abutment column (21) located outside the placement groove (20), and the outer wall of the abutment column (21) is sleeved with a second spring (23), and the second spring (23) is located on the outer wall of the placement groove (20). The top of the base (1) is provided with a through hole which cooperates with the placement seat (4), and when the fire extinguisher is installed in place, the extrusion block (22) abuts against the inner wall of the through hole.

4. A convenient mobile device for a trolley-type dry powder fire extinguisher according to claim 1, characterized in that: A pressure relief hole (28) is formed at one end of the piston sleeve (24) away from the second connecting rod (12); a blocking column (29) is slidably connected to the inner cavity of the pressure relief hole (28); one end of the blocking column (29) passes through the side wall of the base (1) and is installed with a limit block (30), and the limit block (30) is located below the limit hole; the outer wall of the blocking column (29) is sleeved with a third spring (31), and the third spring (31) is located outside the base (1).

5. A convenient mobile device for a trolley-type dry powder fire extinguisher according to claim 4, characterized in that: The cross-sectional shape of the pressure relief hole (28) is trumpet-shaped, and the end of the pressure relief hole (28) close to the piston block (25) has a large diameter, and the cross-sectional shape of the blocking column (29) is compatible with the pressure relief hole (28).

6. A convenient mobile device for a trolley-type dry powder fire extinguisher according to claim 4, characterized in that: The side wall of the base (1) is provided with an unlocking component (32) for pressing the limit block (30), the unlocking component (32) comprising two fixed blocks (321), a rotating shaft (322) being rotatably connected between the two fixed blocks (321), a pedal (323) being fixedly connected to the outer wall of the rotating shaft (322), and a pressing block (324) cooperating with the limit block (30) being provided on a side wall of the pedal (323) close to the base (1).

7. A convenient mobile device for a trolley-type dry powder fire extinguisher according to claim 6, characterized in that: A side surface of the pedal (323) close to the base (1) is also provided with an extrusion column (325) for extruding the elastic limiting column (17) to cooperate with each other, and the extrusion column (325) and the pressing block (324) are respectively located on both sides of the rotating shaft (322).

8. The convenient mobile device for a trolley-type dry powder fire extinguisher according to claim 6, characterized in that: Connecting blocks (326) are symmetrically fixedly connected to the outer walls of both ends of the rotating shaft (322); a torsion spring (327) is sleeved on the outer wall of the rotating shaft (322) between the connecting block (326) and the fixed block (321) on the same side, and both ends of the torsion spring (327) are respectively fixedly connected to the connecting block (326) and the fixed block (321).

9. The convenient mobile device for a trolley-type dry powder fire extinguisher according to claim 1, characterized in that: A hanging rod (33) for hanging the jet pipe of the fire extinguisher is provided on a side of the two fixing rods (2) away from the fire extinguisher.

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