Fire-fighting lifting device with extension structure

Abstract

The invention relates to the technical field of fire-fighting lifters, in particular to a fire-fighting lifting device with an extension structure, which comprises a base and a standing platform, a lifting frame is fixedly mounted at the top end of the base, a mounting seat is fixedly connected to the top end of the lifting frame, and symmetrically arranged cross rods are rotatably connected into the standing platform. First extension platforms are fixedly connected to the two cross rods, supporting rods are rotationally connected to the two side walls of the standing platform through mounting blocks, and second extension platforms are fixedly connected to the two supporting rods; a hydraulic cylinder is fixedly mounted at the top end of the mounting seat, and a guide rod is fixedly connected to the side, adjacent to the hydraulic cylinder, of the top end of the mounting seat. And the working efficiency of rescue work is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fire-fighting lifts, in particular to a lifting device with an extension structure for fire-fighting. Background Art

[0002] When rescue workers carry out emergency fire extinguishing work, they need to use a variety of fire-fighting equipment. When extinguishing a fire on more than one floor, they need to use an elevator to lift the rescue workers to the vicinity of the corresponding floor. Then the rescue workers on the elevator can use a handheld nozzle to extinguish the fire on the floor.

[0003] Existing elevators are generally fixed with a standing platform. The space on the platform is limited, resulting in that the platform can only accommodate a small number of rescue workers. When the workers stand on the standing platform, they need to perform a series of actions. The standing platform with a small space can easily cause the rescue workers standing on it to be unable to move freely, which reduces the efficiency of firefighting work to a certain extent. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a lifting device with an extension structure for fire fighting.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a lifting device with an extension structure for fire fighting, comprising a base and a standing platform, a lifting frame is fixedly installed on the top of the base, a mounting seat is fixedly connected to the top of the lifting frame, a symmetrically arranged cross bar is rotatably connected inside the standing platform, a first extension platform is fixedly connected to the two cross bars, both side walls of the standing platform are rotatably connected to support rods through mounting blocks, and the two support rods are fixedly connected to the second extension platform; The top of the mounting base is fixedly provided with a hydraulic cylinder, and the top of the mounting base is fixedly connected with a guide rod adjacent to the hydraulic cylinder, and the top of the guide rod is slidably connected with an active rack, and the top of the mounting base is fixedly connected with a symmetrically arranged support plate, and a symmetrically arranged first rotating rod is rotatably connected between the two support plates, and the two first rotating rods are fixedly connected to a driven pulley, and the two first rotating rods are fixedly connected to a symmetrically arranged first support rod, and the two support plates are rotatably connected with two second rotating rods, and the two second rotating rods are fixedly connected to a driving pulley, and the two driving pulleys are driven by belts, and the two second rotating rods are fixedly connected to a transmission gear at a position adjacent to the driving pulley, and the two transmission gears are meshed with each other, and one of the second rotating rods is fixedly connected with a symmetrically arranged worm, and the second rotating rod is fixedly connected to a position adjacent to one side of the worm, and the driven gear is meshed with the active rack; A plurality of symmetrically arranged supports are fixedly connected to the top of the mounting seat, and round rods are connected to the supports for common rotation, and worm wheels are fixedly connected to the positions of the two round rods corresponding to the worm gears, and the worm wheels are meshed with the worm gears, and a symmetrically arranged second support rod is fixedly connected to the two round rods.

[0006] Specifically, a first protective fence is provided on the top of the standing platform, a second protective fence is provided on the first extension platform, and a third protective fence is provided on the second extension platform.

[0007] Specifically, the output end of the hydraulic cylinder is fixedly connected to one side of the active rack, and the active rack is located at the bottom end of the driven gear.

[0008] Specifically, a plurality of symmetrically arranged support columns are fixedly connected to the top of the mounting seat, and the tops of the plurality of support columns are fixedly connected to the bottom end of the standing platform.

[0009] Specifically, the mounting seat is provided with a first accommodating groove at the position corresponding to the first support rod, and the first support rod is located inside the first accommodating groove. The mounting seat is provided with a second accommodating groove at the position corresponding to the second support rod, and the second support rod is located inside the second accommodating groove.

[0010] Specifically, the first extension platforms are the same in size and shape, the area of ​​the second extension platform is smaller than that of the first extension platform, and the size and shape of the second extension platform are the same.

[0011] Beneficial effects of the present invention: (1) The present invention is provided with a first extension platform and a second extension platform. When the space of the standing platform needs to be expanded, the hydraulic cylinder can be used as the main power source to provide operating power for each mechanism. The operation of the hydraulic cylinder can cause each mechanism to be linked. At this time, multiple first support rods and second support rods will rotate upward, and the first support rods and the second support rods will respectively drive the first extension platform and the second extension platform to rotate upward, so that the first extension platform and the second extension platform surround the entire standing platform. At this time, the space of the entire standing platform will be greatly extended, allowing more rescue personnel to perform rescue work on each platform, preventing the standing platform with a smaller space from causing the staff to be unable to move, thereby improving the work efficiency of the rescue work. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 The front view provided by the present invention; Figure 2 A structural diagram of the present invention in which one of the first extension platforms is cut away; Figure 3A cross-sectional view provided for the present invention; Figure 4 A specific structural diagram of the top of the mounting seat provided by the present invention; Figure 5 The present invention provides Figure 4 A in the enlarged structure diagram.

[0014] In the figure: 1. base; 2. standing platform; 3. lifting frame; 4. mounting seat; 5. cross bar; 6. first extension platform; 7. support rod; 8. second extension platform; 9. hydraulic cylinder; 10. guide rod; 11. driving rack; 12. support plate; 13. first rotating rod; 14. driven pulley; 15. first supporting rod; 16. second rotating rod; 17. driving pulley; 18. transmission gear; 19. worm; 20. driven gear; 21. support; 22. round rod; 23. worm wheel; 24. second supporting rod; 25. first protective fence; 26. second protective fence; 27. third protective fence; 28. support column; 29. ​​first accommodating groove; 30. second accommodating groove. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0016] like Figure 1-Figure 5 As shown, a lifting device with an extension structure for fire fighting according to the present invention comprises a base 1 and a standing platform 2, a lifting frame 3 is fixedly installed on the top of the base 1, a mounting seat 4 is fixedly connected to the top of the lifting frame 3, a symmetrically arranged cross bar 5 is rotatably connected inside the standing platform 2, and a first extension platform 6 is fixedly connected to the two cross bars 5, and both side walls of the standing platform 2 are rotatably connected to support rods 7 through mounting blocks, and the two support rods 7 are fixedly connected to the second extension platform 8; A hydraulic cylinder 9 is fixedly installed on the top of the mounting seat 4, a guide rod 10 is fixedly connected to the side of the top of the mounting seat 4 adjacent to the hydraulic cylinder 9, an active rack 11 is slidably connected to the top of the guide rod 10, a symmetrically arranged support plate 12 is fixedly connected to the top of the mounting seat 4, a symmetrically arranged first rotating rod 13 is rotatably connected between the two support plates 12, a driven pulley 14 is fixedly connected to the two first rotating rods 13, a symmetrically arranged first supporting rod 15 is fixedly connected to the two first rotating rods 13, and two second A rotating rod 16, two of the second rotating rods 16 are fixedly connected with a driving pulley 17, and the two driving pulleys 17 are transmission-connected to the driven pulley 14 through a belt, and two of the second rotating rods 16 are fixedly connected with a transmission gear 18 at a position adjacent to the driving pulley 17, and the two transmission gears 18 are meshingly connected to each other, and one of the second rotating rods 16 is fixedly connected with a symmetrically arranged worm 19, and a driven gear 20 is fixedly connected to the second rotating rod 16 at a position adjacent to the worm 19 on one side, and the driven gear 20 is meshingly connected to the driving rack 11; A plurality of symmetrically arranged supports 21 are fixedly connected to the top of the mounting seat 4, and a round rod 22 is connected to the supports 21 for common rotation, and a worm wheel 23 is fixedly connected to two of the round rods 22 at the positions corresponding to the worm 19, and the worm wheels 23 are meshed with the worm 19, and a symmetrically arranged second support rod 24 is fixedly connected to the two round rods 22.

[0017] Specifically, a first protective fence 25 is provided at the top of the standing platform 2, a second protective fence 26 is provided on the first extension platform 6, and a third protective fence 27 is provided on the second extension platform 8. The first protective fence 25, the second protective fence 26 and the third protective fence 27 can provide safety protection for rescue personnel.

[0018] Specifically, the output end of the hydraulic cylinder 9 is fixedly connected to one side of the active rack 11 , and the active rack 11 is located at the bottom end of the driven gear 20 , so that the hydraulic cylinder 9 can drive the active rack 11 to move.

[0019] Specifically, a plurality of symmetrically arranged support columns 28 are fixedly connected to the top of the mounting seat 4 , and the tops of the plurality of support columns 28 are fixedly connected to the bottom of the standing platform 2 .

[0020] Specifically, the mounting seat 4 is provided with a first receiving groove 29 at the position corresponding to the first support rod 15, and the first support rod 15 is located inside the first receiving groove 29, and the mounting seat 4 is provided with a second receiving groove 30 at the position corresponding to the second support rod 24, and the second support rod 24 is located inside the second receiving groove 30.

[0021] Specifically, the first extension platforms 6 are the same in size and shape, the area of ​​the second extension platform 8 is smaller than that of the first extension platform 6 , and the size and shape of the second extension platform 8 are the same.

[0022] When in use, the lifting device in an idle state occupies a small area and is easy to transport. When the entire lifting device is moved to the place where rescue is needed, different rescuers can stand on the second protective fence 26 and the third protective fence 27 respectively, and one of the rescuers climbs on the standing platform 2. At this time, the hydraulic cylinder 9 can be opened, and the output end of the hydraulic cylinder 9 will drive the active rack 11 to move, and the movement of the active rack 11 will drive the driven gear 20 to rotate, and the driven gear 20 will drive one of the second rotating rods 16 to rotate, and one of the second rotating rods 16 will drive the worm 19 and the transmission gear 18 to rotate, and the rotation of the transmission gear 18 will drive the other transmission gear 18 to rotate, and at this time, the two transmission gears 18 will rotate at the same time, and the two second rotating rods 16 will also rotate at the same time, and the two second rotating rods 16 will both drive the active pulley 17 to rotate, and the active pulley 17 will both rotate through the belt The driven pulley 14 rotates, and the driven pulley 14 will drive the first rotating rod 13 to rotate, and the first rotating rod 13 will drive the first support rod 15 to rotate. At this time, the first support rods 15 rotate upward at the same time and abut against the first extension platform 6, forcing the two first extension platforms 6 to rotate upward. The two first extension platforms 6 will rotate upward with the cross bar 5 as the center of the circle, and the staff standing on the second protective fence 26 can slowly stand on the first extension platform 6 that is rotating upward. At the same time, the rotation of the worm 19 will drive the worm wheel 23 to rotate, and the rotation of the worm wheel 23 will drive the round rod 22 to rotate, and the rotation of the round rod 22 will drive the second support rod 24 to rotate, and the upward rotation of the second support rod 24 will abut against the second extension platform 8, so that the second extension platform 8 rotates upward with the support rod 7 as the center of the circle. At this time, the lifting device is fully extended and can be lifted up for rescue work; The order in which the rescuers go up to the lifting device can be adjusted freely, and the rescuers can also climb onto each platform after the lifting device is fully extended.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lifting device with an extension structure for fire fighting, characterized in that: It comprises a base (1) and a standing platform (2), wherein a lifting frame (3) is fixedly mounted on the top of the base (1), and a mounting seat (4) is fixedly connected to the top of the lifting frame (3); a symmetrically arranged cross bar (5) is rotatably connected inside the standing platform (2), and a first extension platform (6) is fixedly connected to the two cross bars (5); and support rods (7) are rotatably connected to the two side walls of the standing platform (2) via mounting blocks, and a second extension platform (8) is fixedly connected to the two support rods (7); A hydraulic cylinder (9) is fixedly mounted on the top of the mounting seat (4); a guide rod (10) is fixedly connected to the side of the top of the mounting seat (4) adjacent to the hydraulic cylinder (9); an active rack (11) is slidably connected to the top of the guide rod (10); a symmetrically arranged support plate (12) is fixedly connected to the top of the mounting seat (4); a symmetrically arranged first rotating rod (13) is rotatably connected between two of the support plates (12); a driven pulley (14) is fixedly connected to the two first rotating rods (13); a symmetrically arranged first supporting rod (15) is fixedly connected to the two first rotating rods (13); and two second rotating rods (15) are rotatably connected between the two support plates (12). A rotating rod (16), two second rotating rods (16) are fixedly connected to a driving pulley (17), the two driving pulleys (17) are connected to a driven pulley (14) through a belt, the two second rotating rods (16) are fixedly connected to a transmission gear (18) at a position adjacent to the driving pulley (17), the two transmission gears (18) are meshingly connected to each other, one of the second rotating rods (16) is fixedly connected to a symmetrically arranged worm (19), the second rotating rod (16) is fixedly connected to a driven gear (20) at a position adjacent to the worm (19) on one side, and the driven gear (20) is meshingly connected to the driving rack (11); The top of the mounting seat (4) is fixedly connected to a plurality of symmetrically arranged supports (21), the plurality of supports (21) are rotatably connected to round rods (22), two round rods (22) are fixedly connected to worm wheels (23) at positions corresponding to the worm (19), the worm wheels (23) are meshingly connected to the worm (19), and the two round rods (22) are fixedly connected to second support rods (24) symmetrically arranged.

2. A lifting device with an extension structure for fire fighting according to claim 1, characterized in that: A first protective fence (25) is provided at the top of the standing platform (2), a second protective fence (26) is provided on the first extension platform (6), and a third protective fence (27) is provided on the second extension platform (8).

3. The lifting device with an extension structure for fire fighting according to claim 1, characterized in that: The output end of the hydraulic cylinder (9) is fixedly connected to one side of the active rack (11), and the active rack (11) is located at the bottom end of the driven gear (20).

4. The lifting device with an extension structure for fire fighting according to claim 1, characterized in that: A plurality of symmetrically arranged support columns (28) are fixedly connected to the top end of the mounting seat (4), and the top ends of the plurality of support columns (28) are fixedly connected to the bottom end of the standing platform (2).

5. The lifting device with an extension structure for fire fighting according to claim 1, characterized in that: The mounting seat (4) is provided with a first receiving groove (29) at a position corresponding to the first support rod (15), and the first support rod (15) is located inside the first receiving groove (29); the mounting seat (4) is provided with a second receiving groove (30) at a position corresponding to the second support rod (24), and the second support rod (24) is located inside the second receiving groove (30).

6. The lifting device with an extension structure for fire fighting according to claim 1, characterized in that: The first extension platform (6) has the same size and shape, the second extension platform (8) has a smaller area than the first extension platform (6), and the second extension platform (8) has the same size and shape.

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