Convenient-to-disassemble climbing ladder for tower crane

Abstract

The utility model relates to the technical field of climbing ladders for tower cranes, and discloses a detachable climbing ladder for a tower crane, which comprises a first ladder section, the bottom side of the rear end of the first ladder section is connected with a second ladder section through a hinge, the bottom side of the front end of the first ladder section is fixedly connected with a first fixing plate, and the top side of the front end of the second ladder section is fixedly connected with a second fixing plate. The top end of the first fixing plate is fixedly connected with a fixing sleeve, the inner wall of the fixing sleeve is connected with the second fixing plate through a clamping assembly, and the close ends of the first ladder section and the second ladder section are connected through climbing rods. In the utility model, a mortise at the bottom end of a newly unfolded ladder section II is aligned with and inserted into a tenon at the top end of a first ladder section I, then force applied to a clamping rod is cancelled, the clamping rod is popped into a clamping groove at the bottom side of the front end of the new ladder section II, a pull rod II is pressed, a clamping plate is driven to be separated from a groove of a fixed plate II, and the clamping plate is folded; and then the first ladder section and the second ladder section can be easily folded by using the hinges.

Description

Technical Field

[0001] This utility model relates to the field of climbing ladders for tower cranes, and in particular to a climbing ladder for tower cranes that is easy to disassemble. Background Technology

[0002] Tower cranes are crucial vertical transportation equipment, widely used in the construction of various high-rise buildings, large industrial plants, and other projects. Their function is to lift and transport building materials and equipment, and to assist construction workers in high-altitude operations, greatly improving construction efficiency and operational safety, making them an indispensable piece of machinery in modern construction.

[0003] Traditional tower crane ladders typically employ an integral or complex connection structure. In practical applications, when cranes need to be moved between different construction sites, the cumbersome disassembly process of the ladder often incurs significant manpower and time costs. For example, some ladder connections utilize extensive welding or high-strength bolts, requiring specialized tools and multiple workers for disassembly, which significantly impacts construction progress. Furthermore, the complex structure makes routine maintenance or replacement of damaged ladder components extremely difficult, hindering rapid individual repair of damaged parts, increasing maintenance costs and downtime, and severely impacting the efficient execution of construction projects. To address this technical problem, this application proposes a disassembly-friendly tower crane ladder. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a convenient disassembly type climbing ladder for tower cranes. Align the tenon groove at the bottom of the newly unfolded ladder section two with the tenon at the top of the first ladder section one and insert it. Then, release the force applied to the locking rod and let the locking rod spring into the locking groove on the bottom side of the front end of the new ladder section two. Press the pull rod two to drive the locking plate out of the groove of the fixing plate two and retract the locking plate. Then, the ladder section one and ladder section two can be easily folded up using the hinge.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A detachable climbing ladder for a tower crane includes a first ladder section. The bottom rear end of the first ladder section is connected to a second ladder section via a hinge. The bottom front end of the first ladder section is fixedly connected to a first fixing plate. The top front end of the second ladder section is fixedly connected to a second fixing plate. A fixing sleeve is fixedly connected to the top of the first fixing plate. The inner wall of the fixing sleeve is connected to the second fixing plate via a locking assembly. The first and second ladder sections are connected at their adjacent ends via climbing rods. The bottom end of the second ladder section has a tenon groove. The bottom front end of the second ladder section has a locking groove. A positioning assembly is provided on the top side of the first ladder section. A locking rod is slidably connected to the top front end of the first ladder section. A pull rod is fixedly connected to the bottom end of the locking rod. A fixing plate is fixedly connected to the rear side of the outer wall of the pull rod. A spring is provided on the outer wall of the pull rod.

[0007] Furthermore, the positioning component includes a tenon located at the top of the first stair section, and a connecting sleeve is provided on the outer periphery of the tenon, the connecting sleeve being fixedly connected to the top side of the outer wall of the first stair section.

[0008] Furthermore, the engaging assembly includes a second pull rod located on the inner wall of the fixed sleeve, a locking plate rotatably connected to the bottom end of the second pull rod, the locking plate being slidably connected to the bottom end of the second fixed plate, and a second spring provided on the outer wall of the second pull rod.

[0009] Furthermore, one end of the second spring is connected to the inner wall of the fixed sleeve, and the other end of the second spring is connected to the top of the first fixed plate.

[0010] Furthermore, one end of the spring is connected to the inner wall of the first ladder section, and the other end of the spring is connected to the front end of the fixing plate.

[0011] Furthermore, each of the first and second stair sections is provided with a sliding rod at its right end, and a support frame is fixedly connected to one end of each sliding rod. The support frame is fixedly connected to the right end of the first and second stair sections.

[0012] Furthermore, a rubber pad is fixedly connected to the top of the climbing pole.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the ladders are easy to disassemble. By pulling the lever, the connection between two ladder sections can be released. Without the need for complicated tools, the disassembly of multiple ladder sections can be completed in a short time, which improves construction efficiency and reduces labor and time costs. It also facilitates the individual maintenance and replacement of damaged parts of the ladder.

[0015] 2. In this utility model, each step of the ladder can be folded. Steps one and two of the ladder are connected by hinges and have a folding function, effectively reducing the space occupied by the ladder. The folded ladder can be easily stored in a warehouse or on a transport vehicle, saving a lot of storage space and reducing the transportation difficulties and increased transportation costs that may be caused by the excessive size of the ladder. Attached Figure Description

[0016] Figure 1 This is a perspective view of a detachable climbing ladder for a tower crane according to the present invention.

[0017] Figure 2 This is a schematic diagram of the tie rod structure of a climbing ladder for a tower crane that can be easily disassembled according to this utility model;

[0018] Figure 3 This is a schematic diagram of the tenon structure of a climbing ladder for a tower crane that can be easily disassembled according to this utility model;

[0019] Figure 4 This is a schematic diagram of the hinge structure of a detachable tower crane climbing ladder proposed in this utility model;

[0020] Figure 5 for Figure 4 Enlarged view of point A.

[0021] Legend:

[0022] 1. Ladder section one; 2. Connecting sleeve; 3. Locking rod; 4. Pull rod one; 5. Fixing plate; 6. Spring one; 7. Tenon; 8. Ladder section two; 9. Mortise and tenon; 10. Locking groove; 11. Hinge; 12. Fixing plate one; 13. Fixing sleeve; 14. Pull rod two; 15. Spring two; 16. Locking plate; 17. Fixing plate two; 18. Climbing rod; 19. Rubber pad; 20. Support frame; 21. Slide rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1-3This utility model provides an embodiment of a ladder for a tower crane that is easy to disassemble, comprising a ladder section 1, a ladder section 8 connected to the bottom rear end of ladder section 1 by a hinge 11, a fixing plate 12 fixedly connected to the bottom front end of ladder section 1, a fixing plate 17 fixedly connected to the top front end of ladder section 8, a fixing sleeve 13 fixedly connected to the top of fixing plate 12, the inner wall of fixing sleeve 13 being connected to fixing plate 17 by a pull rod 14 and a clamping plate 16, ladder section 11 and ladder section 8 being connected at their adjacent ends by climbing rods 18, a tenon 9 being provided at the bottom end of ladder section 8, a clamping groove 10 being provided at the bottom front end of ladder section 8, a tenon 7 being provided at the top side of ladder section 1, a clamping rod 3 being slidably connected to the top front end of ladder section 1, a pull rod 4 being fixedly connected to the bottom end of clamping rod 3, a fixing piece 5 being fixedly connected to the rear side of the outer wall of pull rod 4, and a spring 6 being provided on the outer wall of pull rod 4;

[0025] Specifically, pull the lever 3 on the first ladder section. When the lever 3 is pulled, the spring 6 will be compressed through the fixing plate 5. In this state, align the tenon 9 at the bottom of the newly unfolded ladder section 2 with the tenon 7 at the top of the first ladder section 1 and insert it. The tenon 7 is provided with a connecting sleeve 2 on its outer periphery. The connecting sleeve 2 is fixedly connected to the top side of the outer wall of the ladder section 1 for auxiliary positioning and connection. After inserting the tenon 9 and the tenon 7, release the force applied to the lever 3. Under the elastic action of the spring 6, the lever 3 will spring into the slot 10 at the bottom front end of the new ladder section 2. This conveniently completes the assembly of the two ladder sections.

[0026] Reference Figure 1 , Figure 4 and Figure 5 The tenon 7 is located at the top of the first stair section 1. A connecting sleeve 2 is provided on the outer periphery of the tenon 7. The connecting sleeve 2 is fixedly connected to the top side of the outer wall of the first stair section 1. The second pull rod 14 is located on the inner wall of the fixed sleeve 13. The bottom end of the second pull rod 14 is rotatably connected to the card plate 16. The card plate 16 is slidably connected to the bottom end of the second fixed plate 17. The outer wall of the second pull rod 14 is provided with the second spring 15. One end of the second spring 15 is connected to the inner wall of the fixed sleeve 13, and the other end of the second spring 15 is connected to the top of the first fixed plate 12. One end of the first spring 6 is connected to the inner wall of the first stair section 1, and the other end of the first spring 6 is connected to the front end of the fixed plate 5. The right ends of the first stair section 1 and the second stair section 8 are both provided with sliding rods 21. The opposite ends of the sliding rods 21 are fixedly connected to the support frame 20. The support frame 20 is fixedly connected to the right ends of the first stair section 1 and the second stair section 8. The top end of the climbing rod 18 is fixedly connected with a rubber pad 19.

[0027] Specifically, by pressing down on the pull rod 14, the clamping plate 16 is disengaged from the groove of the fixing plate 17 and the clamping plate 16 is retracted. Then, the first ladder section 1 and the second ladder section 8 can be easily folded up using the hinge 11 for easy storage and transportation. Workers can attach the buckle on the safety rope to the slide bar 21 to improve their safety. The rubber pad 19 is made of rubber and has a certain degree of anti-slip properties, which can prevent workers from accidentally slipping and falling while climbing the ladder.

[0028] Working principle: First, remove one section of the ladder. Then, unfold ladder section 1 and ladder section 2 8 using hinge 11, allowing pull rod 2 14 to engage with fixing plate 2 17. Next, press pull rod 2 14 downwards, moving the locking plate 16. Simultaneously, pressing pull rod 2 14 downwards compresses spring 2 15, unfolding the locking plate 16. Releasing the force on pull rod 2 14 causes spring 2 15 to spring upwards, locking the locking plate 16 into the groove of fixing plate 2 17, thus securing ladder section 1 and ladder section 2 8. Conversely, pressing pull rod 2 14 downwards disengages the locking plate 16 from the groove of fixing plate 2 17, retracting the locking plate 16. Then, hinge 11 can be used to retract ladder section 1 and ladder section 2 8. Fold the ladder section 1 and ladder section 2 8. After unfolding and fixing them, fix them in the appropriate position. Then take out the other ladder section and unfold it in the same way. Pull the locking rod 3 on the fixed ladder so that the spring 6 is squeezed through the fixing plate 5. Then align the tenon 9 on the other ladder section with the tenon 7 and insert it. Then release the force applied to the locking rod 3. Under the action of the spring 6, the locking rod 3 will spring into the slot 10 of the other ladder section, which can easily assemble the two ladder sections. Conversely, pull the locking rod 3 to pull it out of the slot 10 of the other ladder section. Then remove the other ladder section from the connecting sleeve 2 and the tenon 7, which can easily disassemble the two ladder sections.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A climbing ladder for a tower crane, characterized in that: The utility model relates to a ladder, including ladder section one (1), ladder section two (8) are connected with the ladder section one (1) back end bottom side through hinge (11), the fixed plate one (12) is fixedly connected with the ladder section one (1) front end bottom side, the fixed plate two (17) are fixedly connected with the ladder section two (8) front end top side, the fixed sleeve (13) top end fixedly connected with the fixed plate one (12), the fixed sleeve (13) inner wall is linked with fixed plate two (17) through clamping subassembly, the ladder section one (1) and ladder section two (8) are close to one end and are connected through pole (18), the ladder section two (8) bottom end is seted up with mortise (9), the ladder section two (8) front end bottom side is seted up with the clamping groove (10), the ladder section one (1) top side is provided with positioning subassembly, the ladder section one (1) front end top side slidingly connected with the clamping rod (3), the clamping rod (3) bottom end fixedly connected with pull rod one (4), pull rod one (4) outer wall rear side fixedly connected with fixed sheet (5), pull rod one (4) outer wall is provided with spring one (6).

2. A climbing ladder for a tower crane according to claim 1, characterized in that: The positioning subassembly includes a tenon (7) at the top end of the ladder section one (1), a connecting sleeve (2) is provided around the tenon (7), and the connecting sleeve (2) is fixedly connected to the outer wall top side of the ladder section one (1).

3. A climbing ladder for a tower crane according to claim 1, characterized in that: The clamping subassembly includes a pull rod two (14) in the inner wall of the fixed sleeve (13), a clamping plate (16) is rotatably connected to the bottom end of the pull rod two (14), the clamping plate (16) is slidingly connected to the bottom end of the fixed plate two (17), and a spring two (15) is provided on the outer wall of the pull rod two (14).

4. A climbing ladder for a tower crane according to claim 3, characterized in that: One end of the spring two (15) is connected to the inner wall of the fixed sleeve (13), and the other end of the spring two (15) is connected to the top end of the fixed plate one (12).

5. A climbing ladder for a tower crane according to claim 1, characterized in that: One end of the spring one (6) is connected to the inner wall of the ladder section one (1), and the other end of the spring one (6) is connected to the front end of the fixed sheet (5).

6. A climbing ladder for a tower crane according to claim 1, characterized in that: The right end of the ladder section one (1) and the ladder section two (8) is provided with a sliding rod (21), the sliding rod (21) is fixedly connected with a support frame (20) at the far end, and the support frame (20) is fixedly connected to the right end of the ladder section one (1) and the ladder section two (8).

7. A climbing ladder for a tower crane according to claim 1, characterized in that: The top end of the pole (18) is fixedly connected with a rubber pad (19).

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