Overhanging type steel beam operation platform

Abstract

The utility model discloses an overhanging type steel beam operating platform which comprises a protective door, the protective door is hinged to a bottom bearing frame, and the protective door is located above the bottom bearing frame. A positioning pull rod is arranged below the bottom bearing frame; one end of the positioning pull rod is slidably connected to the steel beam, and the other end is fixed to the bottom bearing frame through a positioning bolt. The bottom bearing frame comprises main beams, one end of each main beam is provided with a U-shaped clamping groove, and the U-shaped clamping grooves are connected to flange plates of the steel beams in a sliding mode. The movable operating platform solves the problem that an existing movable operating platform is prone to being unstable in gravity center and even overturning.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction and relates to a cantilever steel beam operating platform. Background Art

[0002] Compared with conventional reinforced concrete structures, steel structures are widely used due to their high strength, light weight, good overall stiffness and strong resistance to deformation. With the continuous improvement of construction technology, more and more super-high-rise civil buildings and some large public buildings use steel structures as the load-bearing system. In the steel structure load-bearing system, in order to improve the bearing capacity of the steel structure and ensure the integrity and stability of the steel structure, a large number of steel trusses will be welded or bolted on the large-span steel beams. The construction and installation of steel trusses requires the use of an aerial operating platform. Simply put, the aerial operating platform is a special process equipment that facilitates equipment assembly and welding. It is widely used in formwork engineering, steel structure installation engineering, and bridge engineering.

[0003] The aerial operating platforms that are currently in widespread use can be divided into fixed scaffolding operating platforms and movable independent lifting support operating platforms according to their different installation methods. These two common types of steel structure construction operating platforms still have the following problems in actual use.

[0004] When a fixed scaffolding operating platform is used, it needs to be erected as needed. The entire erection process will consume a lot of time, and the operating platform cannot be moved after erection, and cannot be flexibly transferred according to different construction requirements.

[0005] When using a movable independent lifting support operating platform, in the absence of a stable supporting structure and additional counterweight, construction workers working on the operating platform are prone to unstable center of gravity or even overturning, posing a major safety hazard; in addition, the construction of a movable independent lifting operating platform requires a larger working plane, which is not conducive to workers' assembly line operations and cross-operations. Summary of the invention

[0006] In order to achieve the above-mentioned purpose, the utility model provides a cantilever steel beam operating platform, which solves the problem that the existing mobile operating platform is prone to unstable center of gravity or even overturning.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is a cantilevered steel beam operating platform, including a protective door, which is hinged to the bottom load-bearing frame and is located above the bottom load-bearing frame; a positioning rod is arranged under the bottom load-bearing frame; one end of the positioning rod is slidably connected to the steel beam, and the other end is fixed to the bottom load-bearing frame by a positioning bolt; the bottom load-bearing frame includes a main beam, and one end of the main beam is provided with a U-shaped groove, and the U-shaped groove is slidably connected to the flange plate of the steel beam.

[0008] Furthermore, a barb is provided at one end of the positioning rod, and the barb is slidably connected to the flange plate on the side of the steel beam away from the U-shaped groove; a positioning bolt hole is provided at the other end of the positioning rod, and the positioning bolt is installed in the positioning bolt hole.

[0009] Furthermore, a driven wheel is provided in the barb, and the driven wheel is rotatably connected to the side wall of the barb through a second transmission shaft; the driven wheel is in contact with the flange plate of the steel beam away from the U-shaped groove; a driving wheel is provided in the U-shaped groove, and the driving wheel is rotatably connected to the side wall of the U-shaped groove through a first transmission shaft, and the driving wheel is in contact with the flange plate of the steel beam.

[0010] Furthermore, one end of the first transmission shaft passing through the side wall of the U-shaped slot is fixedly connected to the output end of the motor.

[0011] Furthermore, the bottom load-bearing frame also includes a secondary beam, which is vertically arranged between the secondary beam and the main beam, and the number of the main beams is two. A plurality of plain round steel bars are also arranged between the two main beams, and the plain round steel bars are distributed parallel to the secondary beam.

[0012] Furthermore, the number of the secondary beams is three; the two main beams are each provided with three strip-shaped connecting holes and a plurality of circular connecting holes, the strip-shaped connecting holes are used for connecting the main beam and the secondary beam, and the circular connecting holes are used for connecting the plain round steel bars to the main beam.

[0013] Furthermore, the protective door is hinged to the bottom load-bearing frame via a hinge, wherein the rotation range of the protective door is 0 to 90 degrees. o The hinge adopts a copper bearing hinge.

[0014] Furthermore, there are two protective doors, which are respectively distributed on the left and right sides of the bottom load-bearing frame; the two sides of the two protective doors are fixedly connected by tie rods; the tie rods and the protective doors are fixedly connected by connecting bolts.

[0015] Furthermore, a layer of steel plate is laid flat on the bottom load-bearing frame.

[0016] The beneficial effects of the utility model are:

[0017] The bottom frame of the utility model is cantilevered and installed on the steel beam flange plate in the horizontal direction, and can bear the dead weight of the entire operating platform and construction personnel; the foldable protective fence is installed on the bottom frame through hinges, which can facilitate the transportation, installation and storage of the operating platform while ensuring the safety of construction personnel.

[0018] The cantilevered steel beam operating platform provided by the utility model has a simple structure, strong operability, and a high safety factor, and can accurately and efficiently assist construction personnel in completing the installation of high-strength bolts of steel beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0021] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0022] Figure 3 It is a structural schematic diagram of another angle of an embodiment of the utility model.

[0023] Figure 4 It is a schematic diagram of the positioning pull rod structure of an embodiment of the utility model.

[0024] In the figure, 1. steel beam, 2. positioning rod, 3. tension rod, 4. fixing bolt, 5. hinge, 6. connecting bolt, 7. secondary beam, 8. U-shaped slot, 9. first transmission shaft, 10. plain round steel bar, 11. protective door, 12. driving wheel, 13. main beam, 14. steel plate, 21. driven wheel, 22. second transmission shaft, 23. barb, 24. positioning bolt hole. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figure 1~Figure 4 As shown, the utility model provides a cantilever steel beam operating platform, which mainly includes a bottom load-bearing frame, a detachable protective fence and a movable positioning pull rod 2.

[0027] In some embodiments, the bottom load-bearing frame includes: two main beams 13, three secondary beams 7 and plain round steel bars 10 arranged at intervals on the main beams 13, wherein the two main beams 13 are each provided with three strip connecting holes and a plurality of circular connecting holes, the strip connecting holes are used for connecting between the main beams 13 and the secondary beams 7, and the circular connecting holes are used for connecting the plain round steel bars 10 and the main beams 13; the secondary beams 7 are arranged vertically between the main beams 13, and the secondary beams 7 are fixedly connected to the two ends and the middle position of the main beams 13 respectively, and the two ends of the plain round steel bars 10 are respectively fixedly connected vertically to the two main beams 13.

[0028] In some embodiments, one end of the two main beams 13 is provided with a U-shaped groove 8 extending out of the bottom plate. The thickness of the U-shaped groove 8 is 16 mm thicker than the thickness of the flange plate of the steel beam 1, and the extending length is 10 cm. Bolt holes with a diameter of 10 mm are opened on the U-shaped groove 8 and the flange plate of the steel beam 1. The bottom load-bearing frame can be fixed to the flange plate of the steel beam 1 by connecting with fixing bolts 4. When the operating platform needs to be moved, the fixing bolts 4 need to be removed.

[0029] In some embodiments, in order to reduce falling objects from high altitudes and increase the comfort of the working environment for construction workers, a layer of steel plate 14 is laid on the bottom of the bottom load-bearing frame.

[0030] In some embodiments, the protective fence includes: rotatable and symmetrically arranged left and right protective doors 11 and detachable tie rods 3 on the outside of the operating platform, and the tie rods 3 are arranged crosswise and horizontally. The bottoms of the left and right protective doors 11 are effectively connected to the bottom load-bearing frame through hinges 5, and the rotation range of the protective door 11 is 0 to 90 degrees. o The hinge 5 is a copper bearing hinge, and each blade shaft of the hinge 5 is equipped with a one-way thrust ball bearing to ensure that the protective door 11 can be opened and closed easily and flexibly. The tie rod 3 is detachably connected to the bottom load-bearing frame and the left and right protective doors 11 through the connecting bolts 6, and plays a role in supporting and connecting the left and right protective doors 11.

[0031] In some embodiments, the positioning rod 2 is arranged in the middle of the bottom load-bearing frame, and a positioning bolt hole 24 is provided at one end for installing a positioning bolt to limit the bottom load-bearing frame. There are multiple positioning bolt holes 24, which can realize free adjustment of the position of the positioning bolt according to the width of the bottom load-bearing frame; the other end is provided with a barb 23, which is slidably connected to the other side of the flange plate of the steel beam 1.

[0032] In some embodiments, pulleys are provided on the inner side of the U-shaped slot 8 and the inner side of the hook 23, and the pulleys are divided into a driving wheel 12 and a driven wheel 21. The driving wheel 12 is rotatably connected to the U-shaped slot 8, and is connected to the motor output end through the first transmission shaft 9. The driving wheel 12 is in contact with the flange plate of the steel beam 1; the driven wheel 21 is rotatably connected to the hook 23 through the second transmission shaft 22, and the driven wheel 21 is in contact with the flange plate of the end of the steel beam 1 away from the driving wheel 12. The driving wheel 12 and the driven wheel 21 cooperate with each other to provide kinetic energy for the operating platform to slide left and right.

[0033] The process of installing and using the cantilever steel beam operating platform provided in this embodiment is carried out according to the following steps:

[0034] S1: Use a crane or other lifting device to lift the cantilever operating platform to the height of the lower flange plate of the steel beam 1, and then manually insert the U-shaped slot 8 into the lower flange plate of the steel beam 1.

[0035] S2: The positioning rod 2 is translated in a direction perpendicular to the steel beam 1, so that the length of the positioning rod 2 extending out of the bottom load-bearing frame is equal to the horizontal width of the steel beam 1. At this time, the barb 23 of the positioning rod 2 is just stuck into the other side of the lower flange plate of the steel beam 1.

[0036] S3: Insert a positioning screw between the bottom load-bearing frame and the positioning rod 2 to fix the bottom load-bearing frame and limit the horizontal movement of the positioning rod 2, and then tighten the fixing bolt 4 reserved on the U-shaped groove 8 to make the lower bottom of the U-shaped groove 8 close to the flange plate of the steel beam 1.

[0037] S4: Rotate the left and right protective doors 11 outwards along the hinges 5 by 90 degrees. o After it is perpendicular to the bottom load-bearing frame, the front protection is installed, that is, the diagonal tie rods 3 and the horizontal tie rods 3 that cross each other are installed through the connecting bolts 6.

[0038] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0039] 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. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A cantilever steel beam operating platform, comprising a protective door (11), characterized in that: The protective door (11) is hinged to the bottom load-bearing frame, and the protective door (11) is located above the bottom load-bearing frame; a positioning rod (2) is provided below the bottom load-bearing frame; one end of the positioning rod (2) is slidably connected to the steel beam (1), and the other end is fixed to the bottom load-bearing frame by a positioning bolt; the bottom load-bearing frame includes a main beam (13), one end of each main beam (13) is provided with a U-shaped groove (8), and the U-shaped groove (8) is slidably connected to the flange plate of the steel beam (1).

2. The cantilever steel beam operating platform according to claim 1, characterized in that: One end of the positioning rod (2) is provided with a barb (23), and the barb (23) is slidably connected to the flange plate of the steel beam (1) on the side away from the U-shaped slot (8); the other end of the positioning rod (2) is provided with a positioning bolt hole (24), and the positioning bolt is installed in the positioning bolt hole (24).

3. The cantilever steel beam operating platform according to claim 2, characterized in that: A driven wheel (21) is arranged in the barb (23), and the driven wheel (21) is rotatably connected to the barb (23) via a second transmission shaft (22); the driven wheel (21) is in contact with a flange plate of the steel beam (1) on a side away from the U-shaped groove (8); a driving wheel (12) is arranged in the U-shaped groove (8), and the driving wheel (12) is rotatably connected to the U-shaped groove (8) via a first transmission shaft (9), and the driving wheel (12) is in contact with the flange plate of the steel beam (1).

4. The cantilever steel beam operating platform according to claim 3, characterized in that: One end of the first transmission shaft (9) that passes through the side wall of the U-shaped slot (8) is fixedly connected to the output end of the motor.

5. The cantilever steel beam operating platform according to claim 1, characterized in that: The bottom load-bearing frame further comprises a secondary beam (7), the secondary beam (7) being arranged vertically between the main beam (13), and the number of the main beams (13) being two, and a plurality of plain round steel bars (10) being arranged between the two main beams (13), the plain round steel bars (10) being distributed in parallel with the secondary beam (7).

6. The cantilever steel beam operating platform according to claim 5, characterized in that: The number of the secondary beams (7) is three; the two main beams (13) are each provided with three strip-shaped connection holes and a plurality of circular connection holes, the strip-shaped connection holes being used for connection between the main beam (13) and the secondary beam (7), and the circular connection holes being used for connection between the plain round steel bars (10) and the main beam (13).

7. The cantilever steel beam operating platform according to claim 1, characterized in that: The protective door (11) is hinged to the bottom load-bearing frame via a hinge (5), wherein the protective door can rotate within a range of 0 to 90 degrees. o The hinge (5) is a copper bearing hinge.

8. The cantilever steel beam operating platform according to claim 1, characterized in that: There are two protective doors (11), which are respectively distributed on the left and right sides of the bottom load-bearing frame; the two sides of the two protective doors (11) are fixedly connected via tie rods (3); the tie rods (3) and the protective doors (11) are fixedly connected via connecting bolts (6).

9. The cantilever steel beam operating platform according to claim 6, characterized in that: A layer of steel plate (14) is laid flat on the bottom load-bearing frame.

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