Novel fire ladder
By designing a combination of rotating handle, rotating rod, tapered gear and threaded rod in the fire ladder, the problem of easy jamming during the fixing and use of the existing fire ladder is solved, and the flexible length adjustment and service life of the fire ladder is achieved. extension.
Patent Information
- Application Number
- CN202420931774.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The length of the existing fire staircase is fixed and cannot be adjusted flexibly. The draw rope is easy to tie and the chute mechanism is reset and stuck, resulting in the fire staircase being easily damaged during use and shortened service life.
A new type of fire staircase was designed. By setting up a rotating handle, a rotating rod, a bevel gear and a threaded rod, the lifting staircase can be smoothly raised and lowered to prevent jamming, and an anti-slip foot pad is installed at the bottom of the main ladder to prevent sliding.
It realizes flexible length adjustment of the fire ladder, avoids the problems of rope knotting and chute resetting and ensures the smooth operation and service life of the fire ladder during use.
Smart Images
Figure CN222457313U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire ladders, in particular to a new type of fire ladder. Background Art
[0002] At present, during firefighting and rescue, firefighters use fire ladders to reach the location of trapped people. Existing fire ladders are generally of fixed length, and the length of the fire ladder cannot be flexibly adjusted according to actual conditions. The upright segmented fire ladders are fixed with an internal slide mechanism. When in use, the rope needs to be pulled manually to put the sections of the fire ladder in place. The pull rope is prone to knotting and getting stuck during use. The slide mechanism and the knotted pull rope are prone to jamming during resetting. In addition, the inertia generated when the sections are in place can easily damage the fire ladder, reducing its service life.
[0003] For this reason, we propose a new type of fire ladder. Utility Model Content
[0004] The purpose of the utility model is to provide a new type of fire ladder to solve the problems raised in the above background technology.
[0005] The top of the threaded cylinder is threadably connected to the bottom of the rope, and the top of the threaded cylinder is threadably connected to the bottom of the rope. The top of the threaded cylinder is threadably connected to the top of the rope, and the roller is rotatably connected to the middle part of the pull rope. The middle part of the bottom of the main ladder is rotatably connected to a rotating rod, and second bevel gears located inside the side slide grooves are fixedly installed at both ends of the rotating rod, and a first bevel gear is fixedly installed at the bottom of the threaded cylinder, and the first bevel gear is meshed with the second bevel gear, and a rotating handle is fixedly installed on the outside of the rotating rod.
[0006] Optionally, a connecting block is integrally provided at the bottom of the main ladder, the bottom of the side slide groove is located inside the connecting block, and the bottom of the connecting block is rotatably connected to an anti-slip foot pad.
[0007] Optionally, sliding protrusions are integrally provided on both sides of the wheel seat, sliding grooves are opened on both sides inside the side sliding groove, and the sliding protrusions of the wheel seat are slidably connected to the inside of the sliding groove.
[0008] Optionally, a slide groove is provided on the front of the lift, and a sliding convex strip slidably connected to the slide groove is integrally provided on the back of the main ladder, and the cross section of the slide groove of the lift is T-shaped.
[0009] Optionally, the rotating handle is arranged inside the main ladder, and the two rotating handles are respectively close to two sides of the inside of the main body, and the two rotating handles are arranged perpendicular to each other.
[0010] Optionally, a rotating sleeve is fixedly installed in the middle of the side slide groove, the top of the threaded barrel is rotatably connected to the middle of the rotating sleeve, and the top of the threaded barrel is flush with the top of the rotating sleeve.
[0011] Optionally, the length of the lift is shorter than the length of the main ladder, and the width of the lift is the same as the width of the main ladder.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The new fire ladder is provided with a rotating handle. When the rotating handle is rotated, the rotating rod is driven to rotate, and then the threaded cylinder is driven to rotate through the first bevel gear and the second bevel gear, thereby pushing the threaded rod to rise or fall, so that the wheel seat rises or falls along the sliding groove, and then the pull rope connected to the elevator pulls the elevator to rise or fall, so that the elevator rises or falls very smoothly, and prevents the elevator from being stuck during movement.
[0014] 2. The new fire ladder is provided with a rotating handle, and the rotating handles at both ends are staggered 90 degrees, so that after the rotating handle at one end is rotated, the rotating handle at the other end is just in a convenient gripping position, so that the rotation speed of the rotating rod is accelerated, and the provision of an anti-slip foot pad can prevent the fire ladder from sliding during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the overall structure of a new type of fire ladder of the utility model;
[0016] Figure 2 This is a structural schematic diagram of a side slide groove of a new type of fire ladder of the utility model;
[0017] Figure 3 A new type of fire ladder Figure 2 The enlarged view of point A in the middle;
[0018] Figure 4 A new type of fire ladder Figure 2 Enlarged view of point B in the middle.
[0019] In the figure: 1. main ladder; 2. anti-slip foot pad; 3. lift ladder; 4. rotating rod; 5. rotating handle; 6. side slide groove; 7. threaded cylinder; 8. threaded rod; 9. wheel seat; 10. roller; 11. pull rope; 12. first bevel gear; 13. second bevel gear; 14. connecting block. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figures 1 to 4 The utility model provides a new type of fire ladder, including a main ladder 1, a lifting ladder 3 is slidably connected to the rear side of the main ladder 1, side slide grooves 6 are opened on both sides of the main ladder 1, a pull rope 11 is fixedly installed at the bottom of the lifting ladder 3, and the other end of the pull rope 11 is fixedly installed with the bottom of the side slide groove 6, and the bottom of the side slide groove 6 is rotatably connected with a threaded cylinder 7 located on one side of the pull rope 11, and a threaded rod 8 is threadedly connected to the top of the threaded cylinder 7, and a wheel seat 9 is fixedly installed on the top of the threaded rod 8, and a roller 10 is rotatably connected to the top of the wheel seat 9, and the top of the roller 10 is rollingly connected to the middle part of the pull rope 11, and a rotating rod 4 is rotatably connected to the middle part of the bottom of the main ladder 1, and a second bevel gear 13 located inside the side slide groove 6 is fixedly installed at both ends of the rotating rod 4, a first bevel gear 12 is fixedly installed at the bottom of the threaded cylinder 7, and the first bevel gear 12 is meshed with the second bevel gear 13, and a rotating handle 5 is fixedly installed on the outside of the rotating rod 4.
[0022] A connecting block 14 is integrally provided at the bottom of the main ladder 1, the bottom of the side slide groove 6 is located inside the connecting block 14, and the bottom of the connecting block 14 is rotatably connected to an anti-skid foot pad 2, which can prevent the fire ladder from sliding during use.
[0023] Sliding protrusions are integrally arranged on both sides of the wheel seat 9, and sliding grooves are opened on both sides inside the side sliding groove 6, and the sliding protrusions of the wheel seat 9 are slidably connected with the inside of the sliding groove.
[0024] A slide groove is provided on the front of the lift 3, and a sliding convex strip slidably connected to the slide groove is integrally provided on the back of the main ladder 1. The cross section of the slide groove of the lift 3 is T-shaped.
[0025] The rotating handle 5 is arranged inside the main ladder 1. The two rotating handles 5 are respectively close to the two sides inside the main body. The two rotating handles 5 are arranged perpendicular to each other. By arranging the rotating handle 5 and staggering the rotating handles 5 at both ends by 90 degrees, after rotating the rotating handle 5 at one end, the rotating handle 5 at the other end is just in a position that is convenient for holding, so that the rotation speed of the rotating rod 4 is accelerated.
[0026] A rotating sleeve is fixedly installed in the middle of the side slide groove 6, and the top of the threaded barrel 7 is rotatably connected to the middle of the rotating sleeve, and the top of the threaded barrel 7 is flush with the top of the rotating sleeve.
[0027] The length of the lift 3 is shorter than that of the main ladder 1 , and the width of the lift 3 is the same as that of the main ladder 1 .
[0028] Working principle:
[0029] The rotating handles 5 at both ends are staggered by 90 degrees, so that after the rotating handle 5 at one end is rotated, the rotating handle 5 at the other end is just in a convenient gripping position, so that the rotation speed of the rotating rod 4 is accelerated, and the rotating handle 5 is rotated to drive the rotating rod 4 to rotate, and then the first bevel gear 12 and the second bevel gear 13 drive the threaded cylinder 7 to rotate, thereby pushing the threaded rod 8 to rise or fall, so that the wheel seat 9 rises or falls along the sliding groove, and then the pull rope 11 connected to the elevator 3 pulls the elevator 3 to rise or fall, so that the elevator 3 rises or falls very smoothly, and prevents the elevator 3 from being stuck during the activity.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A novel fire ladder, comprising a main ladder (1), characterized in that: The rear side of the main ladder (1) is slidably connected with a lift ladder (3), and side slide grooves (6) are provided on both sides of the main ladder (1). A pull rope (11) is fixedly installed at the bottom of the lift ladder (3), and the other end of the pull rope (11) is fixedly installed with the bottom of the side slide groove (6). The bottom of the side slide groove (6) is rotatably connected with a threaded cylinder (7) located on one side of the pull rope (11), and the top of the threaded cylinder (7) is threadedly connected with a threaded rod (8), and the top of the threaded rod (8) is fixedly installed with a wheel seat (9), and the wheel seat (9) The top of the main ladder (1) is rotatably connected to a roller (10), the top of the roller (10) is rotatably connected to the middle of the pull rope (11), the middle of the bottom of the main ladder (1) is rotatably connected to a rotating rod (4), both ends of the rotating rod (4) are fixedly mounted with second bevel gears (13) located inside the side slide groove (6), the bottom of the threaded cylinder (7) is fixedly mounted with a first bevel gear (12), the first bevel gear (12) is meshed with the second bevel gear (13), and the outside of the rotating rod (4) is fixedly mounted with a rotating handle (5).
2. A new type of fire ladder according to claim 1, characterized in that: A connecting block (14) is integrally provided at the bottom of the main ladder (1), the bottom of the side slide groove (6) is located inside the connecting block (14), and the bottom of the connecting block (14) is rotatably connected to an anti-slip foot pad (2).
3. A new type of fire ladder according to claim 1, characterized in that: Sliding protrusions are integrally arranged on both sides of the wheel seat (9), sliding grooves are opened on both sides inside the side sliding groove (6), and the sliding protrusions of the wheel seat (9) are slidably connected to the inside of the sliding groove.
4. A new type of fire ladder according to claim 1, characterized in that: The front of the lift (3) is provided with a slide groove, and the back of the main ladder (1) is integrally provided with a sliding convex strip slidably connected to the slide groove. The cross section of the slide groove of the lift (3) is T-shaped.
5. A new type of fire ladder according to claim 1, characterized in that: The rotating handle (5) is arranged inside the main ladder (1), and the two rotating handles (5) are respectively close to two sides of the inside of the main body, and the two rotating handles (5) are arranged perpendicular to each other.
6. A new type of fire ladder according to claim 1, characterized in that: A rotating sleeve is fixedly installed in the middle of the side sliding groove (6), the top of the threaded cylinder (7) is rotatably connected to the middle of the rotating sleeve, and the top of the threaded cylinder (7) is flush with the top of the rotating sleeve.
7. A new type of fire ladder according to claim 1, characterized in that: The length of the lift (3) is shorter than the length of the main ladder (1), and the width of the lift (3) is the same as the width of the main ladder (1).