A lifting platform for installing building steel beams

Abstract

This invention relates to a lifting platform for installing building steel beams, comprising a base frame with several support columns installed in the middle of the base frame. The platform is characterized by: a lifting platform installed above the support columns; standing frames installed on both sides of the lifting platform; a steel beam receiving roller installed above the lifting platform; and several stages of power lifting mechanisms installed below the lifting platform. Each power lifting mechanism includes a power cylinder, with two symmetrical sets of power racks on the side of the power cylinder, each rack meshing with a power gear. The power cylinder of each stage of the power lifting mechanism is inserted into the power cylinder of the adjacent stage below. The advantages of this invention are: it can lift steel beams to a height of over 10 meters, with a continuously linearly varying lifting height for steel beam installation; during installation, the height of the steel beam can be finely adjusted; and the steel beam can be moved laterally for accurate placement in the installation position. It has a large load-bearing capacity, is movable, and can be disassembled for easy transportation.

Description

(I) Technical Field

[0001] This invention belongs to the field of building engineering installation technology, and specifically relates to a lifting platform for installing building steel beams. (II) Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. The structure mainly consists of steel beams, steel columns, steel trusses, and other components made of shaped steel and steel plates. These components are typically connected by welds, bolts, or rivets. Due to their simple construction, they are widely used in large factories, stadiums, and high-rise buildings. Currently, steel structures are increasingly used in multi-story industrial plants and high-rise civil buildings. However, the installation of ordinary steel beams is extremely difficult due to their length and weight, often requiring mezzanine construction after the completion of the main floor construction, further complicating the horizontal transportation and installation of the mezzanine beams. Currently, electric hoists are often used for steel beam installation, but setting the hoist's lifting points is difficult, resulting in low construction efficiency, poor safety, and extreme inflexibility. Some lifting platforms use hydraulic cylinders for lifting, but these have low load-bearing capacity (generally around 500 kg), poor stability, and are prone to wear and oil leaks, leading to high failure rates, short service life, limited application range, and high costs. (III) Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this invention provides a lifting platform for installing building steel beams that is widely applicable, easy to operate, safe and reliable, has a large load-bearing capacity, a low failure rate, and flexible installation.

[0004] This invention is achieved through the following technical solution:

[0005] A lifting platform for installing building steel beams includes a base frame with several support columns installed in the middle of the base frame. The platform is characterized by: a lifting platform installed above the support columns; standing frames installed on both sides of the lifting platform; a steel beam receiving roller installed above the lifting platform; and several stages of power lifting mechanisms installed below the lifting platform. Each power lifting mechanism includes a power cylinder, and two symmetrical sets of power racks are provided on the side of the power cylinder. The power racks mesh with power gears, and the power cylinder of each stage of the power lifting mechanism is inserted into the power cylinder of the adjacent stage below.

[0006] The power gear is coaxially mounted with the driving gear and the driven gear respectively. The driving gear meshes with the driven gear, the driven gear meshes with the transmission gear, and the transmission gear is coaxially mounted with the power lifting motor.

[0007] The power gear, driving gear, driven gear, transmission gear and power lifting motor are respectively installed on the lifting base. The bottom lifting base is fixed to the top of the support column. The bottom first-level power cylinder is inserted into the bottom lifting base. A limiting post is provided above the lifting base to limit the movement of the upper-level lifting base.

[0008] The power lifting mechanism also includes guide cylinders. The guide cylinders of each stage of the power lifting mechanism are respectively inserted into the guide cylinders of the adjacent stage below, and the bottommost guide cylinder is inserted into the support column.

[0009] The steel beam receiving roller is installed on the steel beam receiving roller frame. A ball screw nut is installed at the bottom of the steel beam receiving roller frame. The ball screw nut is sleeved on the ball screw. The end of the ball screw is connected to a crank handle.

[0010] The steel beam receiving roller frame is placed above the fine-tuning bottom frame, which is placed above the lifting platform. Oil cylinders are connected to the bottom of both sides of the fine-tuning bottom frame. The oil cylinders are fixed on the oil cylinder fixing frame at the bottom of the lifting platform. Fine-tuning guide blocks are installed at the bottom of the four corners of the fine-tuning bottom frame and inserted into the guide holes of the lifting platform.

[0011] The bottom sides of the steel beam receiving roller frame are respectively equipped with locking blocks that are locked inside the fine-tuning bottom frame, and the ball screw is installed on the fine-tuning bottom frame.

[0012] The top of the standing frame is inserted into the sleeve through a pin, and the sleeve is fixed to the lifting platform. A reinforcing rod is connected between the bottoms of the two standing frames.

[0013] A ladder is installed at the bottom of the outer side of the standing frame, and one end of the upper part of the outer side of the standing frame is hinged to a stop bar. The other end of the stop bar is fixed to a U-shaped block on the outer side of the standing frame.

[0014] A stabilizing mechanism is installed on the side of the base frame. The stabilizing mechanism includes a support frame fixed to the side of the base frame, a screw rod passing through the support frame, a support base installed at the bottom of the screw rod, and a rotating handle installed at the top of the screw rod.

[0015] The base frame is equipped with active and passive wheels on both sides of its bottom. The active wheels are connected to the gearbox via a transmission chain, and the gearbox is connected to the walking motor via a power chain.

[0016] The base frame is equipped with support beams at both ends, and support casters are installed at the bottom of both ends of the support beams.

[0017] A push-pull handle bracket is fixedly installed above the support beam.

[0018] The support column is installed on the base, and the base is fixed on the frame.

[0019] The outer side of the support column is welded with a fastening pipe, and a fastening column is inserted into the fastening pipe. A fastening beam is installed above the fastening column. A transverse fixing sleeve is fitted at both ends of the fastening beam. The transverse fixing sleeve is fixed to the fastening beam by a transverse fastening bolt. A connecting block is welded above the transverse fixing sleeve. A longitudinal fixing sleeve is fixed above the connecting block. A stabilizing pipe is inserted into the longitudinal fixing sleeve. The stabilizing pipe is fixed to the longitudinal fixing sleeve by a longitudinal fastening bolt.

[0020] A ground support rod is inserted at the end of the stabilizing tube. The ground support rod is fixed to the stabilizing tube by ground support fastening bolts, and a ground support plate is installed at the end of the ground support rod.

[0021] The beneficial effects of this invention are: it can lift steel beams to a height of over 10 meters, and the lifting height is continuously and linearly varied for steel beam installation. During installation, the height of the steel beams can be finely adjusted, and the steel beams can be moved laterally to facilitate accurate delivery to the installation position. It has a high load-bearing capacity, capable of withstanding pressure of over 3 tons. It is movable and can be disassembled for easy transportation. It can be widely used in the installation and high-altitude use of various prefabricated building structures. (iv) Description of the attached drawings

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Appendix Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Appendix Figure 2 This is a schematic diagram of the lifting power transmission structure of the present invention;

[0025] Appendix Figure 3 This is a schematic diagram of the installation of the standing frame and lifting platform of the present invention;

[0026] Appendix Figure 4 This is a schematic diagram of the steel beam support roller frame installation structure of the present invention;

[0027] Appendix Figure 5 This is a schematic diagram of the installation structure of the stabilizing mechanism of the present invention;

[0028] Appendix Figure 6 This is a schematic diagram of the stabilizing pipe installation structure of the present invention;

[0029] Appendix Figure 7 This is a schematic diagram of the walking power transmission structure of the present invention;

[0030] In the diagram, 1 is the base frame, 2 is the support column, 3 is the lifting platform, 4 is the standing frame, 5 is the steel beam receiving roller, 6 is the power cylinder, 7 is the power rack, 8 is the power gear, 9 is the drive gear, 10 is the driven gear, 11 is the transmission gear, 12 is the power lifting motor, 13 is the lifting base, 14 is the limit column, 15 is the guide cylinder, 16 is the steel beam receiving roller frame, 17 is the ball screw nut, 18 is the ball screw, 19 is the crank handle, 20 is the fine-tuning base frame, 21 is the hydraulic cylinder, 22 is the hydraulic cylinder fixing bracket, 23 is the fine-tuning guide block, 24 is the guide hole, 25 is the locking block, 26 is the insertion column, 27 is the sleeve, 28 is the reinforcing rod, 29 is the ladder, 30 is the stop bar, 31 is the... U-shaped locking block, 32 support frame, 33 screw, 34 support base, 35 rotating handle, 36 driving wheel, 37 driven wheel, 38 drive chain, 39 gearbox, 40 power chain, 41 travel motor, 42 support beam, 43 support caster wheel, 44 push-pull handle bracket, 45 base, 46 fastening tube, 47 fastening column, 48 fastening crossbeam, 49 transverse fixing sleeve, 50 transverse fastening bolt, 51 connecting block, 52 longitudinal fixing sleeve, 53 stabilizing tube, 54 longitudinal fastening bolt, 55 ground support rod, 56 ground support fastening bolt, 57 floor support. (V) Detailed Implementation Methods

[0031] The attached figure illustrates a specific embodiment of the present invention. This embodiment includes a base frame 1, with several support columns 2 mounted in the middle of the base frame 1. A lifting platform 3 is mounted above the support columns 2, and standing frames 4 are mounted on both sides of the lifting platform 3. A steel beam receiving roller 5 is provided above the lifting platform 3, and several stages of power lifting mechanisms are installed below the lifting platform 3. Each power lifting mechanism includes a power cylinder 6, and two symmetrical sets of power racks 7 are provided on the side of the power cylinder 6. The power racks 7 mesh with power gears 8, and the power cylinder 6 of each stage of the power lifting mechanism is inserted into the power cylinder 6 of the adjacent stage below. The power gears 8 are coaxially mounted with a driving gear 9 and a driven gear 10, respectively. The driving gear 9 meshes with the driven gear 10, and the driven gear 10 meshes with a transmission gear 11. The transmission gear 11 is coaxially mounted with a power lifting motor 12. The power gear 8, driving gear 9, driven gear 10, transmission gear 11, and power lifting motor 12 are respectively mounted on the lifting base 13. The bottommost lifting base 13 is fixed to the top of the support column 2. The bottommost first-stage power cylinder 6 passes through the bottommost lifting base 13. A limiting post 14 is provided above the lifting base 13 to limit the movement of the next-level lifting base 13. The power lifting mechanism also includes a guide cylinder 15. The guide cylinder 15 of each stage of the power lifting mechanism is inserted into the guide cylinder 15 of the adjacent stage below. The bottommost guide cylinder 15 is inserted into the support column 2. The steel beam receiving roller 5 is mounted on the steel beam receiving roller frame 16. A ball screw nut 17 is installed at the bottom of the steel beam receiving roller frame 16. The ball screw nut 17 is sleeved on the ball screw 18. The end of the ball screw 18 is connected to a crank handle 19. The steel beam receiving roller frame 16 is placed above the fine-tuning base frame 20, which is placed above the lifting platform 3. Hydraulic cylinders 21 are connected to the bottom of both sides of the fine-tuning base frame 20, and the cylinders 21 are fixed to the cylinder fixing bracket 22 at the bottom of the lifting platform 3. Fine-tuning guide blocks 23 are installed at the four corners of the fine-tuning base frame 20 and inserted into the guide holes 24 of the lifting platform 3. Clamping blocks 25, which are locked inside the fine-tuning base frame 20, are installed on both sides of the bottom of the steel beam receiving roller frame 16. A ball screw 18 is installed on the fine-tuning base frame 20. The top of the standing frame 4 is inserted into the sleeve 27 via a pin 26, and the sleeve 27 is fixed to the lifting platform 3. A reinforcing rod 28 connects the bottom of the two standing frames 4. A ladder 29 is clamped to the bottom of the outer side of the standing frame 4. One end of the upper outer side of the standing frame 4 is hinged to a stop bar 30, and the other end of the stop bar 30 is clamped to a U-shaped clamping block 31 on the outer side of the standing frame 4. A stabilizing mechanism is installed on the side of the base frame 1. The stabilizing mechanism includes a support frame 32 fixed to the side of the base frame 1. A screw 33 passes through the support frame 32. A support base 34 is installed at the bottom of the screw 33, and a rotating handle 35 is installed at the top of the screw 33. Active travel wheels 36 and passive travel wheels 37 are respectively installed on both sides of the bottom of the base frame 1. The active travel wheels 36 are connected to a gearbox 39 via a transmission chain 38. The gearbox 39 is connected to a travel motor 41 via a power chain 40. Support beams 42 are installed at both ends of the base frame 1, and support casters 43 are respectively installed at the bottom of both ends of the support beams 42.A push-pull handle bracket 44 is fixedly installed above the support beam 42. The support column 2 is installed on the base 45, and the base 45 is fixed to the base frame 1. A fastening pipe 46 is welded to the outside of the support column 2, and a fastening post 47 is inserted into the fastening pipe 46. A fastening beam 48 is installed above the fastening post 47. A transverse fixing sleeve 49 is fitted at both ends of the fastening beam 48. The transverse fixing sleeve 49 is fixed to the fastening beam 48 by a transverse fastening bolt 50. A connecting block 51 is welded above the transverse fixing sleeve 49. A longitudinal fixing sleeve 52 is fixed above the connecting block 51. A stabilizing pipe 53 passes through the longitudinal fixing sleeve 52. The stabilizing pipe 53 is fixed to the longitudinal fixing sleeve 52 by a longitudinal fastening bolt 54. A ground support rod 55 is inserted at the end of the stabilizing pipe 53. The ground support rod 55 is fixed to the stabilizing pipe 53 by a ground support fastening bolt 56. A ground support plate 57 is installed at the end of the ground support rod 55.

[0032] The lifting platform for installing steel beams of this invention starts with the travel motor 41. The travel motor 41 drives the active travel wheel 36 to rotate sequentially through the power chain 40, gearbox 39, and transmission chain 38. This, in turn, drives the passive travel wheel 37 to rotate through the base frame 1, causing the base frame 1 to move. During this movement, we hold the push-pull handle 44 to apply steering force to the support beam 42, thereby turning the platform under the action of the support casters 43, moving the entire platform to the required position for installing the steel beam. First, rotate the four rotating handles 35 to make the screw 33 drive the support base 34 to move downwards until it can no longer be rotated. In this way, the entire base frame 1 is stabilized under the action of the support frame 32. Then, insert the fastening post 47 into the two fastening tubes 46, loosen the transverse fastening bolts 50, move the two transverse fixing sleeves 49 to the appropriate position, and tighten the two transverse fastening bolts 50 again. Loosen the longitudinal fastening bolts 54, adjust the length of the stabilizing tube 53 to the appropriate position, fix the end of the stabilizing tube 53 to the wall, and tighten the longitudinal fastening bolts 54 again. In this way, the entire device can be firmly fixed to the wall by fastening the crossbeam 48 and the stabilizing tube 53, further ensuring the stability of the device. The connecting block 51 is used to increase the connection area between the transverse fixing sleeve 49 and the longitudinal fixing sleeve 52 to ensure the firmness of the connection. The longitudinal fixing sleeve 52 is used to adjust the length of the extended stabilizing tube 53 to adapt to different working environments. When there is no wall to fix it to, loosen the horizontal fastening bolt 50 and let the stabilizing tube 53 hang down naturally. Insert the ground support rod 55 into the end of the stabilizing tube 53, adjust the appropriate insertion depth, and fix it with the ground fastening bolt 56. This will ensure that the support plate 57 at the end of the ground support rod 55 is inserted into the ground and in tight contact with the ground, which can also ensure the firmness and stability of the entire device.

[0033] The steel beam to be installed is placed on the steel beam receiving roller 5. The power lifting motor 12 is started, which sequentially drives the transmission gear 11, the driving gear 9, and the driven gear 10 to rotate, thereby driving the two power gears 8 to rotate. Under the action of the power rack 7, the power cylinder 6 rises, thereby driving the lifting base 13 to rise. Multiple power lifting motors 12 can be started simultaneously, or any one level of power lifting motor 12 can be started, ultimately driving the lifting platform 3 and the standing frame 4 to the required height. During the rising process, each level of guide cylinder 15 moves within the next level of guide cylinder 15, and the bottom level of guide cylinder 15 moves within the support column 2, ensuring the stability of the steel beam during the rising process. When the height of the steel beam differs slightly from the installation position, the hydraulic cylinder 21 can be started to adjust the height of the fine-tuning base frame 20, achieving the purpose of fine-tuning the height of the steel beam. During this process, the fine-tuning guide block 23 at the bottom of the fine-tuning base frame 20 moves up and down within the guide hole 24 of the lifting platform 3, ensuring the stability of the fine-tuning base frame 20 in its up and down movement. A worker enters the standing frame 4 via ladder 29, then rotates stop bar 31 to engage with U-shaped locking block 32, preventing the worker from falling. The worker cranks handle 19, causing ball screw 18 to rotate, which in turn moves ball screw nut 17, thus moving steel beam receiving roller frame 16 above the lifting platform 3. This allows for horizontal movement of the steel beam until it reaches its designated installation position for secure installation. Locking block 25 ensures that steel beam receiving roller frame 16 can only move linearly above the fine-tuning base frame 20. The standing frame 4 is inserted into the sleeve 27 of the lifting platform 3 via insert pins 26, and two standing frames 4 are connected by reinforcing rods 28. At heights, this securely fixes the standing frames 4, preventing breakage due to excessive worker weight. When not in use, the reinforcing rods 28 can be removed, and the insert pins 26 on both sides can be pulled out of the sleeve 27, allowing the standing frame 4 to be removed, saving space and facilitating transportation.

[0034] Once installation is complete, start the power lifting motor 12 to rotate in reverse. When the lifting base 13 descends, the limit post 14 installed on the next-level lifting base 13 prevents it from being damaged due to excessive descent. Each level of the power lifting mechanism will drive its surrounding protective cover to rise and fall during lifting. The upper-level protective cover is located inside the lower-level protective cover to prevent dust, steel bars, and other foreign objects from entering the power lifting mechanism and causing damage to the power mechanism.

Claims

1. A lifting platform for installing steel beams in construction, comprising a base frame (1), wherein a plurality of supports (2) are installed in the middle of the base frame (1), characterized in that: A lifting platform (3) is installed above the support column (2), and standing frames (4) are installed on both sides of the lifting platform (3). A steel beam receiving roller (5) is provided above the lifting platform (3), and several levels of power lifting mechanisms are installed below the lifting platform (3). The power lifting mechanism includes a power cylinder (6), and two sets of symmetrical power racks (7) are provided on the side of the power cylinder (6). The power racks (7) mesh with the power gears (8) respectively. The power cylinder (6) of each level of power lifting mechanism is inserted into the power cylinder (6) of the adjacent level of power lifting mechanism below. The power gears (8) are coaxially installed with the driving gear (9) and the driven gear (10) respectively. 9) Meets with the driven gear (10), the driven gear (10) meshes with the transmission gear (11), the transmission gear (11) is coaxially mounted with the power lifting motor (12), the power gear (8), the driving gear (9), the driven gear (10), the transmission gear (11) and the power lifting motor (12) are respectively mounted on the lifting base (13), the bottommost lifting base (13) is fixed to the top of the support column (2), the bottommost first-stage power cylinder (6) passes through the bottommost lifting base (13), and a limiting post (14) is provided above the lifting base (13) to limit the upper-level lifting base (13); steel beam receiving roller (5) Installed on the steel beam receiving roller frame (16), the bottom of the steel beam receiving roller frame (16) is equipped with a ball screw nut (17), the ball screw nut (17) is sleeved on the ball screw (18), and the end of the ball screw (18) is connected to the crank handle (19); the steel beam receiving roller frame (16) is placed above the fine adjustment base frame (20), the fine adjustment base frame (20) is placed above the lifting platform (3), the bottom of both sides of the fine adjustment base frame (20) is connected to the oil cylinder (21), the oil cylinder (21) is fixed on the oil cylinder fixing frame (22) at the bottom of the lifting platform (3), and fine adjustment guide blocks (23) are installed at the bottom of the four corners of the fine adjustment base frame (20). The fine adjustment guide blocks (23) are inserted into the lifting platform. Inside the guide hole (24) of the lowering platform (3), the steel beam receiving roller frame (16) is respectively installed with the locking blocks (25) on the inner side of the fine adjustment bottom frame (20) on both sides. The ball screw (18) is installed on the fine adjustment bottom frame (20). The top of the standing frame (4) is inserted into the sleeve (27) through the insert (26). The sleeve (27) is fixed on the lifting platform (3). The bottom of the two standing frames (4) is connected with the reinforcing rod (28). The bottom of the outside of the standing frame (4) is fitted with a ladder (29). The upper side of the outside of the standing frame (4) is hinged to one end of the stop bar (30). The other end of the stop bar (30) is fitted on the U-shaped locking block (31) on the outside of the standing frame (4).

2. The lifting platform for installing building steel beams according to claim 1, characterized in that: The power lifting mechanism also includes a guide cylinder (15). The guide cylinder (15) of each power lifting mechanism is inserted into the guide cylinder (15) of the adjacent power lifting mechanism below. The bottommost guide cylinder (15) is inserted into the support column (2).

3. The lifting platform for installing building steel beams according to claim 1, characterized in that: The base frame (1) is equipped with a stabilizing mechanism on its side. The stabilizing mechanism includes a support frame (32) fixed to the side of the base frame (1). A screw (33) is inserted inside the support frame (32). A support seat (34) is installed at the bottom of the screw (33). A rotating handle (35) is installed at the top of the screw (33).

4. The lifting platform for installing building steel beams according to claim 1, characterized in that: The base frame (1) has active walking wheels (36) and passive walking wheels (37) installed on both sides of the bottom. The active walking wheels (36) are connected to the gearbox (39) through the transmission chain (38). The gearbox (39) is connected to the walking motor (41) through the power chain (40). Support beams (42) are installed at both ends of the base frame (1). Support casters (43) are installed at the bottom of both ends of the support beams (42). Push-pull handle brackets (44) are fixedly installed on the top of the support beams (42). The support column (2) is installed on the base (45). The base (45) is fixed on the base frame (1).

5. The lifting platform for installing building steel beams according to claim 1, characterized in that: The support column (2) is welded with a fastening pipe (46) on the outside. A fastening column (47) is inserted into the fastening pipe (46). A fastening beam (48) is installed above the fastening column (47). A transverse fixing sleeve (49) is fitted on both ends of the fastening beam (48). The transverse fixing sleeve (49) is fixed to the fastening beam (48) by a transverse fastening bolt (50). A connecting block (51) is welded above the transverse fixing sleeve (49). A longitudinal fixing sleeve (52) is fixed above the connecting block (51). A stabilizing pipe (53) is inserted into the longitudinal fixing sleeve (52). The stabilizing pipe (53) is fixed to the longitudinal fixing sleeve (52) by a longitudinal fastening bolt (54). A ground support rod (55) is inserted at the end of the stabilizing pipe (53). The ground support rod (55) is fixed to the stabilizing pipe (53) by a ground support fastening bolt (56). A ground support plate (57) is installed at the end of the ground support rod (55).

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