A lifting device for fire fighting construction

Abstract

The present invention discloses a lifting device for fire fighting construction, which belongs to the technical field of fire fighting construction equipment. The lifting device for fire fighting construction comprises a base frame, the top center of the base frame is fixedly connected with a main frame, a lifting frame is arranged in the main frame; a movable frame is arranged in the lifting frame, a clamping mechanism is installed on the movable frame, and a driving mechanism is installed at the rear end of the main frame; a fire fighting pipe body is arranged on the clamping mechanism. The present invention can lift the fire fighting pipe body to any height by designing the base frame, universal wheels, main frame, lifting frame, movable frame and driving mechanism. When installing the fire fighting pipe body, the construction personnel push the main frame, and the two ends of the fire fighting pipe body can be passed through between two pipe brackets to complete the lifting of the fire fighting pipe body. The whole process does not require the construction personnel to manually move the fire fighting pipe body on the elevated platform for installation, which saves time and effort, and greatly improves the construction efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of fire protection construction equipment, and in particular relates to a lifting device for fire protection construction. Background Art

[0002] Firefighting construction refers to various engineering activities carried out to ensure that buildings and their surroundings can effectively prevent and control fires when fires occur. This includes the installation of firefighting facilities, the laying of firefighting pipe bodies, the configuration of fire extinguishers, the design of evacuation passages, and the commissioning and acceptance of related systems. During the installation of the firefighting pipe bodies, lifting devices are usually used to help safely lift the pipes to the required height and ensure the accuracy and safety of the installation. This not only improves the efficiency of firefighting construction, but also helps reduce the burden on workers and reduce the risk of accidents.

[0003] In order to save ground space and maintain the beauty of the building and smooth passage, the fire-fighting pipe body is usually installed on the ceiling. However, the fire-fighting pipe body needs to be lifted during the installation process. There are two existing lifting methods. One is that one of the construction workers stands on a fixed platform, and the other construction worker manually lifts the fire-fighting pipe body on the ground and hands it to the construction worker on the platform. Although this method uses equipment with low cost, it requires two construction workers to operate, and the operation is time-consuming and labor-intensive, resulting in low efficiency. The other method is that the construction worker first lifts the fire-fighting pipe body and places it on the lifting platform, and also stands on the lifting platform at the same time. The lifting platform automatically rises and drives the fire-fighting pipe body to rise. Although the fire-fighting pipe body is automatically lifted, which reduces manpower, the subsequent insertion of the fire-fighting pipe body into the two pipe brackets still requires manual operation by the construction workers, which is inefficient. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a lifting device for fire fighting construction.

[0005] The technical solution adopted to solve the above technical problems is: a lifting device for fire fighting construction, comprising a base frame, a main frame is fixedly connected to the top center of the base frame, and a lifting frame is arranged in the main frame;

[0006] A movable frame is arranged inside the lifting frame, a clamping mechanism is installed on the movable frame, and a driving mechanism is installed at the rear end of the main frame;

[0007] The clamping mechanism is provided with a fire-fighting pipeline body.

[0008] Furthermore, a plurality of universal wheels are installed at the bottom of the base frame.

[0009] Through the above technical solution, construction workers can push the main frame so that the entire device can be moved at will, which is convenient for passing the fixed fire-fighting pipe body through the two pipe brackets. The construction workers first push the main frame to pass one end of the fire-fighting pipe body through one of the pipe brackets. After passing a certain distance, the other end is aligned with the other pipe bracket, and then the main frame is pushed again to pass the other end of the fire-fighting pipe body through the other pipe bracket, so that the two ends of the outer wall of the fire-fighting pipe body are supported by the two pipe brackets. There is no need for construction workers to manually operate the fire-fighting pipe body, which greatly reduces manpower and improves construction efficiency.

[0010] Furthermore, first sliding grooves are provided on the inner walls on both sides of the main frame, a top plate is fixedly connected to the top of the main frame, a first pulley is installed at the bottom center of the top plate, and a mounting plate is fixedly connected to the rear end of the top plate.

[0011] Through the above technical solution, the lifting frame can slide on the main frame at will, thereby lifting and lowering the fire protection pipe body.

[0012] Furthermore, the lifting frame is slidably connected to the two first slide grooves, the inner walls on both sides of the lifting frame are provided with second slide grooves, the bottom inner surface of the lifting frame is installed with a second pulley, the top inner surface of the lifting frame is installed with a third pulley, and a baffle is fixedly connected between the inner walls on both sides of the lifting frame and close to the bottom of the third pulley.

[0013] Through the above technical scheme, the movable frame can slide on the lifting frame at will, and then the fire-fighting pipe body can be lifted and lowered. When the movable frame moves to fit with the baffle, the upward pulling force of the movable frame is blocked by the baffle, so that the upward force directions of the movable frame and the lifting frame are consistent. When the driving mechanism continues to reel in the wire, it drives the lifting frame to slide on the main frame. When the driving mechanism unwinds, the lifting frame moves downward due to the gravity of the lifting frame and the movable frame. When it fits with the bottom end of the main frame, the movable frame moves downward to the initial position on the lifting frame by its own gravity, so as to lift the next fire-fighting pipe body.

[0014] Furthermore, the movable frame is slidably connected to the two second slide grooves, a connector is fixedly connected to the top of the front end of the movable frame, a connecting frame is fixedly connected to the bottom of the front end of the movable frame, and limiting grooves are provided on the inner and outer walls on both sides of the connecting frame.

[0015] Through the above technical solution, when lifting the fire-fighting pipe body, the fire-fighting pipe body is placed on the connecting frame and clamped by the clamping mechanism. The length of the connecting frame can lift fire-fighting pipe bodies of different diameters, and the functionality is strong.

[0016] Furthermore, the clamping mechanism includes a fixed bar fixedly connected to the top rear end of the connecting frame, sliders are slidably connected to both sides of the connecting frame, and movable bars are fixedly connected to the tops of the two sliders, mounting grooves are provided on the inner sides of the two fixed bars and the two movable bars, a group of springs are fixedly connected in multiple mounting grooves, the outer ends of multiple groups of springs are fixedly connected to limiting plates, the outer sides of multiple limiting plates are fixedly connected to clamping plates, a connecting bar is fixedly connected between the two sliders, a threaded hole is provided at the front end center of the connecting bar, a threaded rod is installed between the connecting frame and the movable frame, and a hand wheel is fixedly connected to the front end of the threaded rod.

[0017] Through the above technical solution, before clamping the fire-fighting pipe body, first adjust the distance between the two fixed bars and the two movable bars, turn the hand wheel, and the hand wheel rotation drives the threaded rod to rotate, thereby driving the connecting bar to move toward the outer end, and then driving the movable bar to move, move to the specified position, and the construction personnel place the fire-fighting pipe body on the movable frame, and then turn the hand wheel to drive the movable bar close to the fire-fighting pipe body, so that the two fixed bars and the clamping plates on the two movable bars are all close to the fire-fighting pipe body, and are all elastically clamped by multiple springs, which improves the stability of the movable frame when it rises, and at the same time facilitates the subsequent separation of the clamping mechanism from the fire-fighting pipe body, and can clamp fire-fighting pipe bodies of different diameters, and the operation is simple.

[0018] Furthermore, the two sliders are slidably connected to the corresponding limit grooves, the multiple limit plates are respectively slidably connected to the corresponding installation grooves, the threaded rod is threadedly connected to the connecting strip through the threaded hole, and the multiple clamping plates are fitted to the outer wall of the fire protection pipe body.

[0019] Through the above technical solution, the limit plate is slidably connected to the installation groove, which improves the stability of the clamping plate when clamping, and the clamping force of multiple clamps is less than the gravity of the movable frame and the clamping mechanism. When the fire-fighting pipe body passes through the two pipe supports, the driving mechanism unwinds and the lifting frame moves downward. At this time, the movable frame and the clamping mechanism are separated from the fire-fighting pipe body by gravity, reducing the manual operation steps of construction personnel and improving construction efficiency.

[0020] Furthermore, the driving mechanism includes a fixed seat fixedly connected to the top of the mounting plate, a winding roller is installed on the fixed seat, a driving motor is fixedly installed on the top of the mounting plate and on one side close to the winding roller, the output shaft of the driving motor is fixedly connected to the winding roller, and a rope is wound around the winding roller.

[0021] The cam is then pulled back by the pulleys, and the gear is then pulled back to move the first pulley, the second pulley, and the third pulley together, so that the cam is moved back and forth, thereby moving the cam forward and backward, thereby causing the cam to move backward and forward ...

[0022] Furthermore, the rope is sequentially wound around the first pulley, the second pulley and the third pulley, and one end is fixedly connected to the top end of the connector.

[0023] Through the above technical solution, when the rope is reeled in, the rope passes through the first pulley, the second pulley and the third pulley, and pulls the connecting head, thereby pulling the movable frame up, thereby achieving the ascent of the fire protection pipe body.

[0024] The beneficial effects of the present invention are as follows: (1) The present invention can lift the fire-fighting pipe body to any height by designing the base frame, universal wheels, main frame, lifting frame, movable frame and driving mechanism. When installing the fire-fighting pipe body, the construction personnel push the main frame, and first pass one end of the fire-fighting pipe body through one of the pipe brackets. After passing a certain distance, the other end is aligned with the other pipe bracket, and then the main frame is pushed to pass the other end of the fire-fighting pipe body through the other pipe bracket, so that the two ends of the outer wall of the fire-fighting pipe body are supported by the two pipe brackets, and the lifting of the fire-fighting pipe body is completed. The whole process does not require the construction personnel to manually move the fire-fighting pipe body on the elevated platform for installation, which saves time and effort, and greatly improves the construction efficiency; (2 ) The present invention designs a clamping mechanism. Before clamping the fire-fighting pipe body, the distance between the two fixed bars and the two movable bars is first adjusted, and the hand wheel is turned. The rotation of the hand wheel drives the threaded rod to rotate, thereby driving the connecting bar to move toward the outer end, and then driving the movable bar to move. When it moves to a specified position, the construction personnel place the fire-fighting pipe body on the movable frame and then turn the hand wheel to make the clamping plate elastically clamp the fire-fighting pipe body. At the same time, different fire-fighting pipe bodies can be fixed and clamped, thereby improving the stability of the fire-fighting pipe body when lifting, and the elastic clamping force is less than the gravity of the movable frame and the clamping mechanism itself, so that the clamping mechanism is convenient to separate from the fire-fighting pipe body, and no manual intervention by construction personnel is required. The operation is simple, which greatly reduces the labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a first-view appearance diagram of the present invention;

[0026] Figure 2 is a second viewing angle appearance diagram of the present invention;

[0027] Figure 3 It is a front view of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the fire protection pipeline of the present invention after the main body is raised;

[0029] Figure 5 It is an expanded view of the main frame, lifting frame and movable frame of the present invention;

[0030] Figure 6 is an expanded view of the movable frame and the clamping mechanism of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of some parts of the clamping mechanism of the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of the fire protection pipeline body after installation of the present invention.

[0033] 1. Base frame; 11. Universal wheel; 2. Main frame; 21. First slide groove; 22. Top plate; 23. First pulley; 24. Mounting plate; 3. Lifting frame; 31. Second slide groove; 32. Second pulley; 33. Third pulley; 34. Baffle; 4. Movable frame; 41. Connecting head; 42. Connecting frame; 43. Limiting groove; 5. Clamping mechanism; 501. Fixed bar; 502. Sliding block; 503. Movable bar; 504. Mounting groove; 505. Spring; 506. Limiting plate; 507. Clamping plate; 508. Connecting bar; 509. Threaded hole; 510. Threaded rod; 511. Hand wheel; 6. Driving mechanism; 601. Fixed seat; 602. Winding roller; 603. Driving motor; 604. Rope; 7. Fire pipe body; 8. Ceiling; 9. Pipe support. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] like Figure 1-Figure 8As shown, a lifting device for fire protection construction in this embodiment includes a base frame 1, and a plurality of universal wheels 11 are installed at the bottom of the base frame 1. Construction workers can push the main frame 2 so that the entire device can be moved at will, so that the fixed fire protection pipe body 7 can be passed through the two pipe supports 9. The construction workers first push the main frame 2, and pass one end of the fire protection pipe body 7 through one of the pipe supports 9. After passing a certain distance, the other end is aligned with the other pipe support 9, and then the main frame 2 is pushed to pass the other end of the fire protection pipe body 7 through the other pipe support 9, so that the two ends of the outer wall of the fire protection pipe body 7 are supported by the two pipe supports 9, and there is no need for construction workers to manually operate the fire protection pipe body 7, which greatly reduces manpower and improves construction efficiency.

[0036] like Figure 1-Figure 5 As shown, the top center of the base frame 1 is fixedly connected to the main frame 2, the inner walls on both sides of the main frame 2 are provided with first slide grooves 21, the top of the main frame 2 is fixedly connected to the top plate 22, the bottom center of the top plate 22 is installed with a first pulley 23, and the rear end of the top plate 22 is fixedly connected to a mounting plate 24, so that the lifting frame 3 can slide on the main frame 2 at will, and then lift the fire pipe body 7.

[0037] like Figure 1-Figure 5 As shown, a lifting frame 3 is arranged in the main frame 2, and the lifting frame 3 is slidably connected with the two first slide grooves 21. Second slide grooves 31 are provided on both inner walls of the lifting frame 3. A second pulley 32 is installed on the bottom inner surface of the lifting frame 3, and a third pulley 33 is installed on the top inner surface of the lifting frame 3. A baffle 34 is fixedly connected between the inner walls of both sides of the lifting frame 3 and close to the bottom of the third pulley 33, so that the movable frame 4 can slide on the lifting frame 3 at will, and then the fire pipe body 7 is lifted and lowered. When the movable frame 4 moves When it is in contact with the baffle 34, the upward pulling force of the movable frame 4 is blocked by the baffle 34, so that the upward force directions of the movable frame 4 and the lifting frame 3 are consistent. When the driving mechanism 6 continues to reel in the wire, it drives the lifting frame 3 to slide on the main frame 2. When the driving mechanism 6 unwinds, the lifting frame 3 moves downward due to the gravity of the lifting frame 3 and the movable frame 4. When it is in contact with the bottom end of the main frame 2, the movable frame 4 moves downward to the initial position on the lifting frame 3 by its own gravity, so as to lift the next fire protection pipe body 7.

[0038] like Figure 1-Figure 5As shown, a movable frame 4 is arranged in the lifting frame 3, and the movable frame 4 is slidably connected to the two second slide grooves 31. A connector 41 is fixedly connected to the top of the front end of the movable frame 4, and a connecting frame 42 is fixedly connected to the bottom of the front end of the movable frame 4. Limiting grooves 43 are provided on the inner and outer walls on both sides of the connecting frame 42. When the fire-fighting pipe body 7 is lifted, the fire-fighting pipe body 7 is placed on the connecting frame 42 and clamped by the clamping mechanism 5. The length of the connecting frame 42 can lift the fire-fighting pipe bodies 7 of different diameters, and the functionality is strong.

[0039] like Figure 1-Figure 7 As shown, a clamping mechanism 5 is installed on the movable frame 4, and the clamping mechanism 5 includes a fixed bar 501 fixedly connected to the rear end of the top of the connecting frame 42, and sliders 502 are slidably connected to both sides of the connecting frame 42. The tops of the two sliders 502 are fixedly connected to movable bars 503, and the inner sides of the two fixed bars 501 and the two movable bars 503 are provided with mounting grooves 504, and a group of springs 505 are fixedly connected in the multiple mounting grooves 504. The outer ends of the multiple groups of springs 505 are fixedly connected to the limiting plates 506, and the outer sides of the multiple limiting plates 506 are fixedly connected to the clamping plates 507. The two sliders 50 2 is fixedly connected with a connecting strip 508, and a threaded hole 509 is provided at the front center of the connecting strip 508. A threaded rod 510 is installed between the connecting frame 42 and the movable frame 4, and a hand wheel 511 is fixedly connected to the front end of the threaded rod 510. Before clamping the fire pipe body 7, the distance between the two fixed strips 501 and the two movable strips 503 is adjusted first, and the hand wheel 511 is turned. The hand wheel 511 rotates to drive the threaded rod 510 to rotate, thereby driving the connecting strip 508 to move to the outer end, and then driving the movable strip 503 to move. When it moves to the specified position, the construction personnel place the fire pipe body 7 on the movable frame 4. The hand wheel 511 is then turned to drive the movable bar 503 close to the fire pipe body 7, so that the two fixed bars 501 and the clamping plates 507 on the two movable bars 503 are all close to the fire pipe body 7, and are elastically clamped by multiple springs 505, which improves the stability of the movable frame 4 when it rises, and at the same time facilitates the subsequent separation of the clamping mechanism 5 from the fire pipe body 7, and can clamp the fire pipe body 7 of different diameters, and is easy to operate. The two sliders 502 are slidably connected to the corresponding limit grooves 43, and the multiple limit plates 506 are respectively slidably connected to the corresponding installation grooves 504, and the screw The threaded rod 510 is threadedly connected to the connecting strip 508 through the threaded hole 509, and the multiple clamping plates 507 are fitted with the outer wall of the fire pipe body 7. The limit plate 506 is slidably connected to the installation groove 504, which improves the stability of the clamping plates 507 when clamping, and the clamping force of the multiple clamping plates 507 is less than the gravity of the movable frame 4 and the clamping mechanism 5. When the fire pipe body 7 passes through the two pipe supports 9, the driving mechanism 6 is unwound and the lifting frame 3 moves downward. At this time, the movable frame 4 and the clamping mechanism 5 are separated from the fire pipe body 7 by gravity, reducing the manual operation steps of construction personnel and improving construction efficiency.

[0040] like Figure 1-Figure 4 As shown, a driving mechanism 6 is installed at the rear end of the main frame 2, and a fire-fighting pipe body 7 is arranged on the clamping mechanism 5. The driving mechanism 6 includes a fixing seat 601 fixedly connected to the top of the mounting plate 24, and a winding roller 602 is installed on the fixing seat 601. A driving motor 603 is fixedly installed on the top of the mounting plate 24 and on one side close to the winding roller 602. The output shaft of the driving motor 603 is fixedly connected to the winding roller 602, and a rope 604 is wound around the winding roller 602. When the rope 604 is wound, the driving motor 603 is started, and the winding roller 602 is driven to rotate by the output shaft of the driving motor 603, so that the rope 604 is wound, so that the rope 604 slides with the first pulley 23, the second pulley 32 and the third pulley 33 in turn, and pulls the connecting head 41, thereby pulling the movable frame 4 up, and then pulling the fire-fighting pipe body 7 on the clamping mechanism 5 up. When the rope 604 is released, the driving motor 603 is started, and the driving motor 603 is driven by the driving motor The rotation of the output shaft 603 drives the winding roller 602 to rotate, thereby paying out the rope 604, so that the rope 604 slides with the first pulley 23, the second pulley 32 and the third pulley 33 in sequence, so that the lifting frame 3 moves downward on the main frame 2 by its own gravity, and the movable frame 4 moves downward on the lifting frame 3 by its own gravity. The entire structure completes the lifting and lowering of the fire pipe main body 7 through the winding and paying out of the rope 604, and raises the fire pipe main body 7 to any position, which saves time and effort in operation and is convenient for construction personnel to subsequently dock and install the fire pipe main body 7. The rope 604 is wound around the first pulley 23, the second pulley 32 and the third pulley 33 in sequence, and one end is fixedly connected to the top of the connector 41. When the rope 604 is wound, the rope 604 passes through the first pulley 23, the second pulley 32 and the third pulley 33, and pulls the connector 41, thereby pulling the movable frame 4 up, thereby realizing the lifting of the fire pipe main body 7.

[0041] The working principle of this embodiment is as follows: when the fire-fighting pipe body 7 needs to be lifted, the construction personnel first adjust the distance between the two fixed bars 501 and the two movable bars 503, and turn the hand wheel 511. The rotation of the hand wheel 511 drives the threaded rod 510 to rotate, thereby driving the connecting bar 508 to move toward the outer end, and then driving the movable bar 503 to move to the specified position. The construction personnel place the fire-fighting pipe body 7 on the movable frame 4, and then turn the hand wheel 511 to drive the movable bar 503 close to the fire-fighting pipe body 7, so that the two fixed bars 501 and the clamping plates 507 on the two movable bars 503 are all close to the fire-fighting pipe body 7, and are elastically clamped by multiple springs 505;

[0042] The driving motor 603 is started, and the output shaft of the driving motor 603 rotates to drive the winding roller 602 to rotate, so that the rope 604 is wound up. The rope 604 passes through the first pulley 23, the second pulley 32 and the third pulley 33, and pulls the connecting head 41, thereby pulling the movable frame 4 and the clamping mechanism 5 up, so that the movable frame 4 rises in the lifting frame 3 through the two second slide grooves 31. When the movable frame 4 moves to fit with the baffle plate 34, the upward pulling force of the movable frame 4 at this time is blocked by the baffle plate 34, so that the upward force directions of the movable frame 4 and the lifting frame 3 are consistent. When the winding roller 602 continues to wind up, it drives the lifting frame 3 to slide on the main frame 2, so that the lifting frame 3 moves on the main frame 2 through the two first slide grooves 21. After moving upward to the specified position, the winding roller 602 stops winding up. At this time, the fire pipe body 7 is just at the level of the two pipe supports 9.

[0043] The construction personnel push the main frame 2, and pass one end of the fire-fighting pipe body 7 through one of the pipe supports 9 first. After passing a certain distance, the other end is aligned with the other pipe support 9, and then the main frame 2 is pushed again, and the other end of the fire-fighting pipe body 7 is passed through the other pipe support 9, so that the two ends of the outer wall of the fire-fighting pipe body 7 are supported by the two pipe supports 9, and the lifting of the fire-fighting pipe body 7 is completed;

[0044] At this time, the winding roller 602 pays out the wire. Since the clamping force of the multiple clamps 507 is less than the gravity of the movable frame 4 and the clamping mechanism 5, the lifting frame 3 moves downward. At this time, the movable frame 4 and the clamping mechanism 5 are separated from the fire pipe body 7 by gravity, and the winding roller 602 continues to pay out the wire. The lifting frame 3 fits with the bottom end of the main frame 2, and the movable frame 4 moves downward to the initial position on the lifting frame 3 by its own gravity, so as to lift the next fire pipe body 7.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A lifting device for fire fighting construction, comprising a base frame (1), characterized in that: The top center of the base frame (1) is fixedly connected to a main frame (2), and a lifting frame (3) is arranged inside the main frame (2); A movable frame (4) is arranged inside the lifting frame (3), a clamping mechanism (5) is installed on the movable frame (4), and a driving mechanism (6) is installed at the rear end of the main frame (2); The clamping mechanism (5) is provided with a fire protection pipe body (7).

2. A lifting device for fire fighting construction according to claim 1, characterized in that: A plurality of universal wheels (11) are installed at the bottom of the base frame (1).

3. A lifting device for fire fighting construction according to claim 1, characterized in that: The inner walls on both sides of the main frame (2) are provided with first sliding grooves (21), the top of the main frame (2) is fixedly connected to a top plate (22), the bottom center of the top plate (22) is equipped with a first pulley (23), and the rear end of the top plate (22) is fixedly connected to a mounting plate (24).

4. A lifting device for fire fighting construction according to claim 3, characterized in that: The lifting frame (3) is slidably connected to the two first sliding grooves (21); the inner walls on both sides of the lifting frame (3) are provided with second sliding grooves (31); the inner surface of the bottom of the lifting frame (3) is provided with a second pulley (32); the inner surface of the top of the lifting frame (3) is provided with a third pulley (33); and a baffle (34) is fixedly connected between the inner walls on both sides of the lifting frame (3) and close to the bottom of the third pulley (33).

5. A lifting device for fire fighting construction according to claim 4, characterized in that: The movable frame (4) is slidably connected to the two second slide grooves (31); a connector (41) is fixedly connected to the top of the front end of the movable frame (4); a connecting frame (42) is fixedly connected to the bottom of the front end of the movable frame (4); and limiting grooves (43) are provided on both inner and outer walls of the connecting frame (42).

6. A lifting device for fire fighting construction according to claim 5, characterized in that: The clamping mechanism (5) comprises a fixing bar (501) fixedly connected to the top rear end of the connecting frame (42), sliders (502) are slidably connected to both sides of the connecting frame (42), and movable bars (503) are fixedly connected to the tops of the two sliders (502), and mounting grooves (504) are provided on the inner sides of the two fixing bars (501) and the two movable bars (503), and a group of springs (505) are fixedly connected in the plurality of mounting grooves (504), and the plurality of groups of springs (505) are fixedly connected to the plurality of mounting grooves (504). The outer ends of the springs (505) are fixedly connected to limit plates (506), the outer sides of the plurality of limit plates (506) are fixedly connected to clamp plates (507), a connecting strip (508) is fixedly connected between the two sliders (502), a threaded hole (509) is provided at the front end center of the connecting strip (508), a threaded rod (510) is installed between the connecting frame (42) and the movable frame (4), and a hand wheel (511) is fixedly connected to the front end of the threaded rod (510).

7. A lifting device for fire fighting construction according to claim 6, characterized in that: The two sliders (502) are slidably connected to the corresponding limiting grooves (43), the plurality of limiting plates (506) are slidably connected to the corresponding mounting grooves (504), the threaded rod (510) is threadedly connected to the connecting strip (508) through a threaded hole (509), and the plurality of clamping plates (507) are fitted to the outer wall of the fire protection pipe body (7).

8. A lifting device for fire fighting construction according to claim 5, characterized in that: The driving mechanism (6) comprises a fixing seat (601) fixedly connected to the top of the mounting plate (24), a winding roller (602) being mounted on the fixing seat (601), a driving motor (603) being fixedly mounted on the top of the mounting plate (24) and on one side close to the winding roller (602), an output shaft of the driving motor (603) being fixedly connected to the winding roller (602), and a rope (604) being wound around the winding roller (602).

9. A lifting device for fire fighting construction according to claim 8, characterized in that: The rope (604) is connected to the first pulley (23), the second pulley (32) and the third pulley (33) in sequence, and one end is fixedly connected to the top end of the connector (41).

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