Telescopic tower crane safety channel

Abstract

The utility model relates to the technical field of building construction auxiliary equipment, in particular to a telescopic tower crane safety channel which comprises a channel body, a telescopic system, a supporting structure and a certain number of guardrails, one side of the channel body is fixed relative to a horizontal web member of a tower crane, and the telescopic system is connected with the channel body in a sliding mode. The top of the supporting structure is arranged at the bottom of one end of the telescopic system, the bottom of the supporting structure is fixed to the building ground, and a certain number of guardrails are arranged on the channel body and / or the telescopic system. According to the utility model, the self length and height can be conveniently adjusted according to the dynamic change of each stage of construction, and meanwhile, an operation area can be ingeniously avoided during secondary structure construction, so that the problems that the wall building perpendicularity is difficult to control, materials are inconvenient to stack, the ground construction flatness is influenced and the like due to channel occupation are effectively prevented; and the requirement for local dismantling or adjusting of the completed part is reduced, and the construction efficiency and quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment technology for building construction, specifically a retractable tower crane safety passage. Background Technology

[0002] In the construction industry, tower cranes play a vital role in vertical transportation, and the construction of safe passages between tower cranes and buildings is a key link in ensuring the safe passage of personnel.

[0003] With the development of construction technology and the increasing demands of construction, traditional tower crane safety passages have revealed many shortcomings. Firstly, traditional safety passages are mostly fixed structures with non-adjustable length and height. During the construction process, from foundation work to the main structure, the relative position and height difference between the tower crane and the building continuously change. The initially constructed fixed passages, unable to adapt to the new distance and height requirements in subsequent construction, must be demolished and rebuilt. This results in high costs in manpower, materials, and time. Furthermore, frequent high-altitude demolition and reconstruction operations significantly increase the risk of safety accidents, such as falls and injuries from falling materials.

[0004] On the other hand, when carrying out secondary structure masonry construction, traditional fixed safety passages often occupy space, hinder construction operations, and affect the smooth progress of masonry work. They may even require partial demolition or adjustment of completed sections, leading to reduced construction efficiency, increased structural quality risks, and additional repair costs. For example, passage supports may hinder the verticality control of wall masonry and material stacking, and the structure at the bottom of the passage may affect the flatness of the ground and structural connections.

[0005] In addition, the construction site environment is complex and ever-changing. The site layout, building design and construction schedule of different projects are different. Fixed safety passages are difficult to adapt to these changes and cannot meet the needs of diverse construction scenarios.

[0006] Therefore, in order to effectively solve the above problems and improve the safety, efficiency and adaptability of building construction, it is urgent to develop a tower crane safety passage that is retractable, height adjustable and does not affect the secondary structure masonry. Utility Model Content

[0007] The purpose of this invention is to provide a retractable tower crane safety passage to solve the above problems.

[0008] To achieve the above objectives, the following technical solutions are provided:

[0009] A retractable tower crane safety passage, fixed relative to the horizontal web members of the tower crane and lifted by a lifting device, with its bottom fixed to the building ground, includes: a passage body, a telescopic system, a support structure, and a certain number of guardrails. One side of the passage body is fixed relative to the horizontal web members of the tower crane. The telescopic system is slidably connected to the passage body and can telescopically move within the passage body. The top of the support structure is located at the bottom of one end of the telescopic system, and its bottom is fixed to the building ground. A certain number of guardrails are respectively installed on the passage body and / or the telescopic system.

[0010] Preferably, the main body of the channel includes a C-shaped chute, a main body base plate, a fixed plate, a fixed baffle, and a hand-cranked telescopic rod. The bottom of the C-shaped chute is provided with a certain number of lifting grooves. There are two C-shaped chutes with their openings facing each other. The main body base plate is located between the two C-shaped chutes and above them. The fixed baffle is fixedly connected to one end of the two C-shaped chutes. One end of the hand-cranked telescopic rod is rotatable and is located on the fixed baffle. The other end is telescopic and is fixedly connected to the telescopic system.

[0011] Preferably, the hand-cranked telescopic rod includes a handle, a bearing, a threaded inner rod, and a threaded outer rod. The hand-cranked telescopic rod passes through a fixed baffle. The bearing passes through the fixed baffle and is fixedly connected to its outer side wall. The handle is fixedly connected to one side of the inner wall of the bearing. One end of the threaded inner rod is fixedly connected to the other side of the inner wall of the bearing. The threaded outer rod is a cylindrical structure with a threaded structure on its inner side wall, which is sleeved on the threaded inner rod and threadedly connected to it. The other end of the threaded outer rod is fixedly connected to the telescopic system.

[0012] Preferably, the telescopic system includes H-beams and a telescopic base plate. There are two H-beams, which are respectively located in two C-shaped sliding grooves and can slide relative to each other. The telescopic base plate is located between the two H-beams in the middle of the H-beams. Each H-beam has a long strip-shaped limiting hole in the middle of one of its extended ends. The telescopic base plate has a certain number of guardrail mounting holes at certain intervals on both sides.

[0013] Preferably, the support structure includes a connector, a hollow steel plate, a universal joint, a mounting and fixing steel plate, an adjusting support rod, a rotating fixing device, a threaded support rod, a fixing pin, an external threaded connector rod, a square steel plate, and embedded parts. The embedded parts are U-shaped structures, embedded in the building ground, with their tops penetrating the square steel plate and fixed to it. There are two external threaded connector rods, each with a threaded structure on its outer wall, and their bottoms are fixedly connected to the square steel plate. There are two threaded support rods, which are cylindrical structures with threaded structures on both the inner and outer walls, and their bottoms are threadedly connected to the external threaded connector rods. A rotating retainer is threaded onto the top and bottom ends respectively. Two elongated holes are symmetrically provided in the middle of the side wall of the threaded support rod. A certain number of circular holes penetrating its body are provided on the adjusting support rod. The fixing pin passes through the elongated holes and the circular holes and is located between the two rotating retainers. One end of the adjusting support rod is inserted into the threaded support rod. There are two hollow steel plates. The other end of the adjusting support rod is fixedly connected to the bottom of one hollow steel plate. The universal joint is located between the two hollow steel plates. There are two connectors, which are respectively located on both sides of the top surface of the top hollow steel plate.

[0014] Preferably, the universal joint is a ball joint bearing structure, and the connector is an inverted C-shaped steel structure, with a bolt structure that passes through the middle of its two side walls for connection.

[0015] The beneficial effects of this utility model are: the safety passage can conveniently adjust its length and height according to the dynamic changes in each stage of construction, and can cleverly avoid the work area during secondary structure construction, ensuring smooth construction.

[0016] By adjusting the hand-cranked telescopic rod and movable support rod, the length and height of the passage can be dynamically adjusted. This effectively avoids the problem of traditional fixed safety passages needing to be demolished and rebuilt due to incompatibility, significantly reducing manpower, material resources, and time costs. At the same time, it significantly reduces the risk of safety accidents such as personnel falls and material injuries caused by demolition and reconstruction work, effectively protecting the lives of construction workers and improving the safety and continuity of the construction process.

[0017] The installation of a universal joint allows for 360° angle adjustment of the safety passage, effectively preventing damage to the passage caused by swaying of the tower crane due to other external forces.

[0018] The limiting holes ensure that the horizontal tension generated by the tower crane during its back-and-forth swaying will not pull on the wall or exert additional horizontal force on the tower crane itself. The hollow steel plates installed on the support device reduce weight and facilitate installation and disassembly.

[0019] During the secondary structure masonry construction phase, this safety passage cleverly avoids the work area, preventing obstruction of construction operations and ensuring the smooth progress of masonry work. It effectively prevents problems such as difficulty in controlling the verticality of wall masonry, inconvenience in material stacking, and impact on ground flatness caused by passageway obstruction. It also reduces the need for partial demolition or adjustment of completed sections, lowers potential structural quality risks, avoids additional repair costs, and improves construction efficiency and quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the channel body and telescopic system structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the supporting structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the hand-cranked telescopic rod structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the universal joint structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the embedded part structure of this utility model;

[0026] Figure 7 This is a schematic diagram of the adjustable support rod structure of this utility model;

[0027] Figure 8 This is a schematic diagram of the fixing pin structure of this utility model;

[0028] The attached diagram is labeled as follows: 1. Main body of the passageway; 2. Guardrail; 3. Telescopic system; 4. Support structure; 5. Connector; 6. Hollow steel plate; 7. Universal joint; 8. Mounting and fixing steel plate; 9. Adjustable support rod; 10. Rotary fixing device; 11. Threaded support rod; 12. External threaded joint rod; 13. Square steel plate; 14. Embedded part; 15. Fixing plate; 16. Hand-cranked telescopic rod; 17. C-shaped slide; 18. Guardrail mounting hole; 19. H-beam; 20. Telescopic base plate; 21. Limiting hole; 22. Lifting groove; 23. Main body base plate; 24. Circular hole; 25. Fixing pin; 26. Handle; 27. Bearing; 28. Threaded inner rod; 29. ​​Threaded outer rod; 30. Rotating shaft; 31. Ball bearing; 32. Shaft body; 33. Fixing baffle; 34. Long hole; 35. Building ground. Detailed Implementation

[0029] The following is a detailed description of this design scheme with reference to the accompanying drawings.

[0030] A retractable tower crane safety passage comprises four parts: a passage body 1, a guardrail 2, a telescopic system 3, and a support structure 4. The passage body 1 and the telescopic system 3 are stacked and can be moved and unfolded along the length direction. The support structure 4 is vertically set at one end of the telescopic system 3, and the other end of the passage body 1 is connected to the horizontal web of the tower crane itself.

[0031] In some embodiments, the channel body 1 and the telescopic system 3 are composed of eight parts: a fixed plate 15, a hand-cranked telescopic rod 16, a C-shaped slide 17, a guardrail mounting hole 18, an H-beam 19, a telescopic base plate 20, a limiting hole 21, and a hoisting groove 22.

[0032] The length extension and retraction are achieved by the cooperation of the hand-cranked telescopic rod 16, the C-shaped slide 17 and the H-beam 19.

[0033] The telescopic base plate 20 is made of 20mm thick perforated steel plate and welded to the H-beams 19 on both sides. The main base plate 23 is made of 30mm thick steel plate and welded to the top of the main channel 1.

[0034] The guardrail mounting holes 18 are 20mm in diameter and 20cm apart, used for installing the guardrail 2 after it is extended; the fixing plate 15 is connected to the horizontal web of the tower crane itself; the lifting groove 22 is used to clamp the wire rope to ensure the balance during the overall lifting and installation of the passage.

[0035] In some embodiments, the support structure 4 consists of ten parts: connector 5, hollow steel plate 6, universal joint 7, mounting and fixing steel plate 8, adjusting support rod 9, rotating fixer 10, threaded support rod 11, external threaded joint rod 12, square steel plate 13, and embedded part 14.

[0036] The nuts on both sides of the connector 5 are welded and fixed, and the screw passes through the limiting hole 21 on the H-beam 19 for secure fixation. The limiting hole 21 is 10cm long. The lower part of the connector 5 is welded and fixed to the hollow steel plate 6. The upper part of the universal shaft 7 is welded to the lower part of the hollow steel plate 6, and the bottom of the universal shaft 7 is welded to the top of another hollow steel plate 6.

[0037] The mounting and fixing steel plate 8 is connected to the two hollow steel plates 6 with screws and nuts before the H-beam 19 is connected to the connector 5. This reduces the rotation of the universal joint 7 and facilitates the connection of the support device and the safety passage. The mounting and fixing steel plate 8 is removed when the crane is in operation to allow the safety passage to deform at an angle as the crane sways.

[0038] In some embodiments, the hand-cranked telescopic rod 16 consists of four parts: a handle 26, a bearing 27, a threaded inner rod 28, and a threaded outer rod 29. The handle 26 is welded to the bearing 27; the bearing 27 is welded to the threaded inner rod 28; and the threaded outer rod 29 is welded to one end of the telescopic base plate 20. By changing the rotation direction of the bearing 27, the handle 26 drives the bearing 27 and the threaded inner and outer rods to achieve the length adjustment of the channel.

[0039] In some embodiments, the universal joint 7 consists of three parts: a rotating shaft 30, ball bearings 31, and a shaft body 32. The universal joint 7 is made of round steel. The shaft body 32 has ball bearings 31 inside and partially encloses the rotating shaft 30. The rotating shaft 30 can be adjusted to 360° angle by sliding the ball bearings 31.

[0040] In some embodiments, the threaded support rod 11 is made of 60 round steel, and the two ends of the rod are fixed with internal and external threaded connector rods 12. The center of the threaded support rod 11 is a 200 mm long elongated hole 34. The internal thread of the rotating retainer 10 is threaded to the threaded support rod 11, and the rotating retainer 10 is made of 20 round steel.

[0041] In some embodiments, the external threaded connector rod 12 is made of 60×4 round steel, with its bottom welded to the square steel plate 13 and its top threaded to the threaded support rod 11.

[0042] In some embodiments, the adjusting support rod 9 is made of 50mm round steel, and the fixing pin 25 is made of 20mm round steel. When the working height of the support structure 4 is initially adjusted by adjusting the length of the adjusting support rod 9 inserted into the threaded support rod 11, the fixing pin 25 is inserted into the circular hole 24. By adjusting the fixing device 10 up and down, the fixing pin 25 can move in the elongated hole 34 in the center of the threaded support rod 11, so that the height of the movable support rod can be infinitely adjusted. The upper and lower fixing devices 10 can lock and fix the fixing pin 25 securely.

[0043] In some embodiments, the embedded part 14 is made of carbon steel and is fixed to the square steel plate 13 during installation; the guardrail 2 of the main body 1 of the passage is made of 10mm thick perforated steel plate and welded to both sides of the C-shaped slide 17; the telescopic guardrail 2 is made of 20mm diameter round steel and 10mm thick perforated steel plate and is inserted into the guardrail mounting hole 18 during installation.

[0044] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A retractable tower crane safety passage, fixed relative to the horizontal web members of the tower crane itself and lifted by a lifting device, with its bottom fixed to the building ground, characterized in that... include: The system includes a main channel, a telescopic system, a support structure, and a number of guardrails. One side of the main channel is fixed relative to the horizontal web of the tower crane itself. The telescopic system is slidably connected to the main channel and can telescopically move within the main channel. The top of the support structure is located at the bottom of one end of the telescopic system, and its bottom is fixed to the building ground. A number of guardrails are respectively installed on the main channel and / or the telescopic system.

2. The retractable tower crane safety passage according to claim 1, characterized in that, The main body of the channel includes a C-shaped chute, a main base plate, a fixed plate, a fixed baffle, and a hand-cranked telescopic rod. The bottom of the C-shaped chute is provided with a certain number of lifting grooves. There are two C-shaped chutes with their openings facing each other. The main base plate is located between the two C-shaped chutes and above them. The fixed baffle is fixedly connected to one end of the two C-shaped chutes. One end of the hand-cranked telescopic rod is rotatable and is located on the fixed baffle. The other end is telescopic and is fixedly connected to the telescopic system.

3. A retractable tower crane safety passage according to claim 2, characterized in that, The hand-cranked telescopic rod includes a handle, a bearing, a threaded inner rod, and a threaded outer rod. The hand-cranked telescopic rod passes through a fixed baffle. The bearing passes through the fixed baffle and is fixedly connected to its outer side wall. The handle is fixedly connected to one side of the inner wall of the bearing. One end of the threaded inner rod is fixedly connected to the other side of the inner wall of the bearing. The threaded outer rod is a cylindrical structure with a threaded structure on its inner side wall, which is sleeved on the threaded inner rod and threadedly connected to it. The other end of the threaded outer rod is fixedly connected to the telescopic system.

4. The retractable tower crane safety passage according to claim 1, characterized in that, The telescopic system includes H-beams and a telescopic base plate. There are two H-beams, which are respectively set in two C-shaped sliding grooves and can slide relative to each other. The telescopic base plate is set between the two H-beams, located in the middle of the H-beams. Each H-beam has a long strip-shaped limiting hole in the middle of one of its extended ends. The telescopic base plate has a certain number of guardrail mounting holes at certain intervals on both sides.

5. A retractable tower crane safety passage according to claim 1, characterized in that, The support structure includes a connector, a hollow steel plate, a universal joint, a mounting and fixing steel plate, an adjusting support rod, a rotating fixing device, a threaded support rod, a fixing pin, an external threaded connector rod, a square steel plate, and embedded parts. The embedded parts are U-shaped structures, embedded into the building ground, with their tops penetrating the square steel plate and fixed to it. There are two external threaded connector rods, each with a threaded structure on its outer wall, and their bottoms are fixedly connected to the square steel plate. There are also two threaded support rods, which are cylindrical structures with threaded structures on both the inner and outer walls, and their bottoms are threadedly connected to the external threaded connector rods. The top of each threaded support rod... A rotating retainer is threadedly connected to the bottom end. Two elongated holes are symmetrically provided in the middle of the side wall of the threaded support rod. A certain number of circular holes penetrating its body are provided on the adjusting support rod. The fixing pin passes through the elongated holes and the circular holes and is located between the two rotating retainers. One end of the adjusting support rod is inserted into the threaded support rod. There are two hollow steel plates. The other end of the adjusting support rod is fixedly connected to the bottom of one hollow steel plate. The universal joint is located between the two hollow steel plates. There are two connectors, which are respectively located on both sides of the top surface of the top hollow steel plate.

6. A retractable tower crane safety passage according to claim 5, characterized in that, The universal joint is a ball joint bearing structure, and the connector is an inverted C-shaped steel structure with a bolt structure that runs through the middle of its two side walls for connection.

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