Foldable crane boom support device for construction

Abstract

The utility model relates to the technical field of building construction, and specifically relates to a foldable hoisting boom supporting device for building construction, which comprises a base, a hoisting crane, a support mechanism and an extension mechanism, the hoisting crane is bolted to the surface of the base, the support mechanism is installed on the surface of the base, the support arm after unfolding can evenly disperse the stress of the device to the periphery of the base, thereby avoiding the device from tilting due to excessive stress on a single angle, and ensuring the overall stability from the aspect of support layout, the overturning groove, the overturning shaft and the support arm inside the folding overturning seat are accurately matched, the support arm is arranged in the overturning groove, when the support arm is pushed, the overturning shaft can stably rotate inside the folding overturning seat, which not only avoids the deviation and jamming of the support arm during unfolding, but also limits the rotation track of the support arm through the overturning groove, thereby ensuring that the support arm after unfolding is accurately at a preset support angle with the base, without the need for additional adjustment of the angle, the operation time for unfolding the support arm is greatly saved, and the construction preparation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a foldable crane boom support device for building construction. Background Technology

[0002] In the construction industry, crane boom support devices are core equipment for ensuring the safety of lifting operations. Their support stability, ease of operation, and adaptability to different scenarios directly affect construction efficiency and operational safety. However, existing crane boom support devices still have many technical pain points that need to be addressed in practical applications, making it difficult to meet the diversified needs of complex construction scenarios.

[0003] Existing foldable crane boom support devices for construction have the following shortcomings: 1. Traditional support devices often use asymmetrical layouts or single-group centralized support designs for their support arms. After deployment, the force tends to concentrate on local support points, leading to overload of the base at a single corner. This significantly increases the risk of tilting or overturning of the device, especially when hoisting heavy components.

[0004] 2. Traditional equipment often has a fixed wheel track design, which cannot be flexibly adjusted according to the working scene. When hoisting large load components in open space, the fixed narrow wheel track results in a limited support coverage area. The equipment is unable to resist the lateral tension and vertical overturning force generated by hoisting, and its balance and stability are insufficient. Utility Model Content

[0005] The purpose of this utility model is to provide a foldable crane boom support device for building construction.

[0006] To achieve this objective, the present invention adopts the following technical solution: A foldable crane boom support device for construction is provided, including a base, a crane, a support mechanism, and a telescopic mechanism. The crane is bolted to the surface of the base. The support mechanism is installed on the surface of the base and includes a folding and tilting seat, a tilting shaft, a support arm, a screw shaft, and a base plate. Four sets of folding and tilting seats are fixed at the four corners of the base surface. The tilting shaft is rotatably connected inside the folding and tilting seat. The support arm is fixed to the surface of the tilting shaft and fits into the tilting groove opened inside the folding and tilting seat. The screw shaft is threadedly connected to the end of the support arm through a screw sleeve. A rotating disk is fixed to one end of the screw shaft, and the base plate is fixed to the other end of the screw shaft. The telescopic mechanism is fixed to the surface of the base and includes a storage sleeve, a telescopic rod, and moving wheels. The storage sleeve is fixed to both sides of the base surface. The telescopic rod is slidably connected to the moving groove opened inside the storage sleeve. There are two sets of moving wheels: one set of moving wheels is fixed to the bottom two ends of the storage sleeve, and the other set of moving wheels is fixed to the bottom of the extension end of the telescopic rod.

[0007] Preferably, the support mechanism further includes a ratchet, a pawl, and a lifting bracket. The ratchet is fixed to the surface of the flip shaft and is located on the outside of the folding flip seat. The pawl is hinged to the surface of the folding flip seat through a hinge seat and is engaged with the ratchet. The lifting bracket has a U-shaped structure and is hinged to the surface of the pawl through a hinge shaft.

[0008] Preferably, a positioning plate is fixedly connected to the side of the folding and flipping seat near the lifting frame. The lifting frame is slidably connected in a positioning groove opened inside the positioning plate. A spring is fixedly connected between the positioning plate and the pawl. The spring can push the pawl to always keep it in contact with the ratchet, preventing the support arm from flipping over on its own during the support process.

[0009] Preferably, a locking buckle is fixed to one end of the support arm surface near the folding and flipping seat, a locking seat is fixed to the surface of the folding and flipping seat, a locking pin is slidably connected inside the locking seat, a locking hole adapted to the locking pin is opened inside the locking buckle, a pull rod is fixed to one side of the surface of the locking pin, a pull groove adapted to the pull rod is opened inside the locking seat, and a spring is fixed between the locking seat and the locking pin. The pull rod can push the locking pin to maintain the locking buckle in a snap-fit ​​state, so as to prevent the support arm from accidentally disengaging after folding.

[0010] Preferably, the telescopic mechanism further includes a guide wheel, a threaded block, and a lead screw. The guide wheel is rotatably connected to the end surface of the receiving sleeve via a rotating shaft bracket. The surface of the receiving sleeve has a through groove adapted to the guide wheel, and the surface of the guide wheel is in contact with the surface of the telescopic rod. The threaded block is fixed to one end of the surface of the telescopic rod. The lead screw is rotatably connected to the surface of the receiving sleeve via a bearing seat, and the lead screw is threadedly connected to the threaded block. The surface of the receiving sleeve has a movable groove adapted to the threaded block.

[0011] Preferably, a mounting bracket is fixed to the surface of the storage sleeve, and a worm gear is rotatably connected inside the mounting bracket via a bearing. A worm wheel is fixed to one end of the lead screw, and the worm gear and the worm wheel are meshed together. A handwheel is fixed to one end of the worm gear. Rotating the handwheel can drive the worm gear to rotate, and the lead screw is driven to rotate through the meshing transmission between the worm wheel and the worm gear. In turn, the lead screw is driven to slide along the moving groove of the storage sleeve through the threaded block.

[0012] Preferably, an anti-slip mat is fixed to the bottom of the flooring. The anti-slip mat is made of rubber and has anti-slip textures on its surface, which can increase the friction between the flooring and the ground and improve the stability of the device when it is supported.

[0013] The beneficial effects of this utility model are: 1. This utility model discloses a foldable lifting boom support device for construction. Four sets of folding and flipping seats are precisely fixed at the four corners of the base, forming a symmetrical support layout. After unfolding, the support arm can evenly distribute the force of the device to the four sides of the base, avoiding excessive force at a single corner that could cause the device to tilt. This ensures overall stability from the perspective of support layout. The flipping groove inside the folding and flipping seat is precisely matched with the flipping shaft and the support arm. The support arm is set to fit the flipping groove. When the support arm is pushed, the flipping shaft can rotate stably along the inside of the folding and flipping seat. This not only avoids the support arm from shifting or getting stuck when unfolding, but also restricts the rotation trajectory of the support arm through the flipping groove, ensuring that it is precisely at the preset support angle with the base after unfolding. No additional angle adjustment is required, which greatly saves the operation time of unfolding the support arm and improves the efficiency of construction preparation.

[0014] 2. This utility model discloses a foldable crane boom support device for construction. The folded locking structure is reliable, balancing accident prevention and convenient unlocking, optimizing storage and transport experience. The locking component after the support arm is folded enhances practicality through three details: automatic locking, convenient unlocking, and easy reset. The locking process requires no manual operation; when the support arm is fully folded to fit the base, the locking hole of the locking buckle automatically aligns with the locking pin. Spring 2 can directly push the locking pin into the locking hole, achieving locking upon reaching the correct position. This prevents accidental unfolding of the support arm during transport due to forgetting to lock, and prevents damage from component collisions. During transport, the device is designed to prevent damage to construction workers. The unlocking operation is simple and effortless; simply pull the lever to compress the locking pin and spring two, disengaging it from the locking hole. No disassembly of any parts is required, and a single person can complete the unlocking process, saving manpower. After unlocking, spring two automatically pushes the locking pin back to its original position, eliminating the need for manual repositioning and facilitating quick locking during the next fold. This prevents locking failure due to the locking pin not being reset. Furthermore, the support arm folds close to the base without extending outwards and occupying extra space, significantly reducing the overall size of the device. This makes it easier to transport via construction elevators and transport vehicles, reducing space occupation costs and the risk of parts being bumped during transport.

[0015] 3. This utility model discloses a foldable crane boom support device for construction, which maximizes operational balance and stability, resists the risk of imbalance under various working conditions, and features a flexible and adjustable wheelbase to adapt to the balance requirements of different loads and sites. Relying on the threaded transmission structure of the screw and threaded block, turning the handwheel drives the telescopic boom to extend or retract the sleeve, thereby flexibly changing the overall wheelbase of the device. When the crane is lifting heavy components, the telescopic boom can be fully extended to maximize the distance between the two sets of moving wheels, expand the support coverage of the device, and evenly distribute the lateral tension and vertical overturning force generated during lifting to a wider support point, significantly reducing the risk of the device tipping over. When the construction site space is narrow, the telescopic boom can be retracted into the sleeve to reduce the wheelbase to adapt to the confined space, while ensuring the balance of the foundation support. This solves the balance problems of traditional fixed wheelbase devices, which are unstable in wide areas and cannot enter narrow areas.

[0016] 4. This utility model discloses a foldable lifting boom support device for construction, featuring a self-locking transmission to prevent displacement and ensure continuous stability of the balance. It employs a worm gear and worm shaft meshing transmission structure, which not only accurately transmits the rotational force of the handwheel to the lead screw, but also possesses a core advantage in its inherent mechanical self-locking property. The worm gear can only be driven to rotate by the worm shaft; conversely, it cannot drive the worm shaft to rotate through the worm gear. This means that after the telescopic boom is adjusted to the preset length, even if the device is subjected to lifting impact, slight ground subsidence, or lateral pressure on the moving wheels during operation, the lead screw will not rotate on its own, and the telescopic boom will not extend or retract on its own. The wheel spacing always maintains the preset size, ensuring a stable balance without deviation. This completely eliminates the risk of support imbalance caused by displacement after adjustment, making it particularly suitable for long-term, continuous lifting operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the overall folded state of this utility model; Figure 3 This is a schematic diagram of the base and support mechanism of this utility model; Figure 4 This utility model Figure 3 Enlarged view of point A; Figure 5 This is a cross-sectional view of the folding and flipping base and the locking base of this utility model; Figure 6 This is a structural schematic diagram of the storage sleeve and telescopic rod of this utility model; In the diagram: 1. Base; 2. Crane; 3. Support mechanism; 4. Folding and flipping seat; 5. Folding shaft; 6. Support arm; 7. Screw shaft; 8. Flooring; 9. Ratchet; 10. Pad; 11. Lifting frame; 12. Positioning plate; 13. Spring 1; 14. Locking buckle; 15. Locking seat; 16. Locking pin; 17. Spring 2; 18. Pull rod; 19. Telescopic mechanism; 20. Storage sleeve; 21. Telescopic sleeve rod; 22. Moving wheel; 23. Guide wheel; 24. Threaded block; 25. Lead screw; 26. Worm gear; 27. Worm; 28. Handwheel. Detailed Implementation

[0019] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0021] Reference Figures 1 to 6 The diagram illustrates a foldable crane boom support device for construction, comprising a base 1, a crane 2, a support mechanism 3, and a telescopic mechanism 19. The crane 2 is bolted to the surface of the base 1. The support mechanism 3 is mounted on the surface of the base 1 and includes folding and tilting seats 4, tilting shafts 5, support arms 6, screw shafts 7, and a base plate 8. Four sets of folding and tilting seats 4 are fixed at the four corners of the surface of the base 1. The tilting shafts 5 are rotatably connected inside the folding and tilting seats 4. The support arms 6 are fixed to the surface of the tilting shafts 5 and fit into the tilting grooves opened inside the folding and tilting seats 4. The screw shaft... 7 is threadedly connected to the end of the support arm 6 via a screw sleeve. One end of the screw shaft 7 is fixed with a rotating disk, and the floor 8 is fixed to the other end of the screw shaft 7. The telescopic mechanism 19 is fixed to the surface of the base 1. The telescopic mechanism 19 includes a storage sleeve 20, a telescopic rod 21, and moving wheels 22. The storage sleeve 20 is fixed to both sides of the surface of the base 1. The telescopic rod 21 is slidably connected to the moving groove opened inside the storage sleeve 20. There are two sets of moving wheels 22. One set of moving wheels 22 is fixed to the bottom ends of the storage sleeve 20, and the other set of moving wheels 22 is fixed to the bottom of the extension end of the telescopic rod 21. The base 1 As the core load-bearing base of the device, it provides installation reference and weight support for the entire component, preventing the device from tilting during operation. The crane 2 is fixed to the surface of the base 1 by bolts. The bolt connection ensures the connection strength between the crane 2 and the base 1, preventing the crane 2 from shifting due to excessive force during lifting operations. The support mechanism 3 achieves stability during operation through three steps: folding and storing, unfolding and supporting, and then fine-tuning the height. Four sets of folding and tilting seats 4 are fixed at the four corners of the base 1, providing tilting fulcrums for the support arm 6. The tilting shaft 5 is rotatably connected inside the folding and tilting seats 4, and the support arm 6 is fixed to the surface of the tilting shaft 5. The support arm 6 is flush with the folding slot of the folding base 4. When the support arm 6 is pushed, the folding shaft 5 rotates synchronously with the support arm 6, turning the support arm 6 out of the folding slot until the support arm 6 and the base 1 form a preset support angle, thus completing the unfolding of the support arm 6. The end of the support arm 6 is threadedly connected to the screw shaft 7 through a screw sleeve. Rotating the rotating disk at one end of the screw shaft 7 can drive the screw shaft 7 to move up and down along the screw sleeve through the screw drive. The floor plate 8 at the other end of the screw shaft 7 moves synchronously with the screw shaft 7 until the floor plate 8 is completely flush with the ground, adapting to construction grounds with different flatness and avoiding the support arm 6 being suspended in the air, which would cause unstable support.

[0022] Reference Figures 1 to 4The support mechanism 3 also includes a ratchet 9, a pawl 10, and a lifting bracket 11. The ratchet 9 is fixed to the surface of the flip shaft 5 and is located outside the folding flip seat 4. The pawl 10 is hinged to the surface of the folding flip seat 4 via a hinge seat and is engaged with the ratchet 9. The lifting bracket 11 has a U-shaped structure and is hinged to the surface of the pawl 10 via a hinge shaft. To prevent the support arm 6 from flipping due to force when supported, locking is achieved through the one-way engagement of the ratchet 9 and the pawl 10. The ratchet 9 is fixed to the surface of the flip shaft 5 and... Located on the outside of the folding and flipping seat 4, it rotates synchronously with the flipping shaft 5; the pawl 10 is hinged to the surface of the folding and flipping seat 4 through the hinge seat, and in its natural state it is engaged with the ratchet 9, allowing the flipping shaft 5 to drive the support arm 6 to rotate in the unfolding support direction, and prohibiting it from reversing in the folding and storage direction, forming a one-way lock. When it is necessary to fold the support arm 6, the lifting frame 11 with a U-shaped structure is pulled upward, which can drive the pawl 10 to rotate around the hinge seat, disengage from the ratchet 9, and after the lock is released, the support arm 6 can be rotated in the opposite direction to complete the folding.

[0023] Reference Figures 3 to 4 A positioning plate 12 is fixedly connected to the side of the folding and flipping base 4 near the lifting bracket 11. The lifting bracket 11 is slidably connected to a positioning groove opened inside the positioning plate 12. A spring 13 is fixedly connected between the positioning plate 12 and the pawl 10. The spring 13 can push the pawl 10 to always keep it in contact with the ratchet 9, preventing the support arm 6 from flipping on its own during the support process. The positioning plate 12 and the spring 13 provide auxiliary and reset guarantee for the locking state of the pawl 10. The positioning plate 12 is fixed to the side of the folding and flipping base 4 near the lifting bracket 11, and the lifting bracket 11 is slidably connected to the positioning groove opened inside the positioning plate 12. The positioning slot of the positioning plate 12 restricts the lifting direction of the lifting frame 11, preventing the pawl 10 from shifting when rotating, and ensuring that the pawl 10 can accurately engage or disengage with the ratchet 9. The spring 13 is fixed between the positioning plate 12 and the pawl 10. In its natural state, the spring 13 is in a slightly stretched state, generating a pushing force in the direction of the ratchet 9, pushing the pawl 10 to always be tightly engaged with the ratchet 9. Even if the device vibrates slightly during operation, causing the pawl 10 to shift slightly, the spring 13 can quickly push the pawl 10 back to its original position, maintaining the locking effect and preventing the support arm 6 from accidentally flipping.

[0024] Reference Figures 3 to 5A locking buckle 14 is fixed to the end of the support arm 6 near the folding and flipping base 4. A locking seat 15 is fixed to the surface of the folding and flipping base 4. A locking pin 16 is slidably connected inside the locking seat 15. A locking hole adapted to the locking pin 16 is opened inside the locking buckle 14. A pull rod 18 is fixed to one side of the surface of the locking pin 16. A pull groove adapted to the pull rod 18 is opened inside the locking seat 15. A spring 17 is fixed between the locking seat 15 and the locking pin 16. The pull rod 18 can push the locking pin 16 to keep it in the locked state with the locking buckle 14, preventing the support arm 6 from accidentally disengaging after folding. After the support arm 6 is folded, it is prevented from accidentally unfolding by the locking assembly. The locking buckle 14 is fixed to the end of the support arm 6 near the folding and flipping base 4. The folding and flipping base 4 is fixed to the locking base 15. The locking pin 16 is slidably connected inside the locking base 15. When the support arm 6 is fully folded to fit the base 1, the locking hole of the locking buckle 14 is aligned with the locking pin 16, and the second spring 17 is in its natural state. It pushes the locking pin 16 into the locking hole of the locking buckle 14 to achieve the snap-locking of the support arm 6 after folding. When it is necessary to unfold the support arm 6 again, pull the pull rod 18 fixed to one side of the locking pin 16 to drive the locking pin 16 to move into the locking base 15, compress the second spring 17, until the locking pin 16 disengages from the locking hole of the locking buckle 14, releasing the folding lock. After releasing the pull rod 18, the second spring 17 resets and pushes the locking pin 16 back to the initial position for easy locking next time.

[0025] Reference Figure 1 , Figure 2 , Figure 6 The telescopic mechanism 19 also includes a guide wheel 23, a threaded block 24, and a lead screw 25. The guide wheel 23 is rotatably connected to the end surface of the receiving sleeve 20 via a rotating shaft bracket. The surface of the receiving sleeve 20 has a through groove adapted to the guide wheel 23, and the surface of the guide wheel 23 is in contact with the surface of the telescopic rod 21. The threaded block 24 is fixed to one end of the surface of the telescopic rod 21. The lead screw 25 is rotatably connected to the surface of the receiving sleeve 20 via a bearing seat, and the lead screw 25 is threaded with the threaded block 24. The connecting sleeve 20 has a movable groove on its surface that matches the threaded block 24. The telescopic mechanism 19 adjusts the wheel track and assists in movement by telescopic adjustment, taking into account both the ease of movement of the device and the balance and stability during operation. The sleeve 20 is fixed on both sides of the surface of the base 1. The worm 27 is connected to the mounting bracket on its surface through a bearing. One end of the worm 27 is fixed with a handwheel 28. The lead screw 25 is connected to the surface of the sleeve 20 through a bearing seat, and one end of the lead screw 25 is fixed with a worm wheel 26 that meshes with the worm 27.

[0026] Reference Figure 6A mounting bracket is fixed to the surface of the storage sleeve 20. Inside the mounting bracket, a worm 27 is rotatably connected via bearings. A worm wheel 26 is fixed to one end of a lead screw 25, and the worm 27 meshes with the worm wheel 26. A handwheel 28 is fixed to one end of the worm 27. Rotating the handwheel 28 drives the worm 27 to rotate. The meshing of the worm wheel 26 and worm 27 drives the lead screw 25 to rotate, which in turn drives the telescopic sleeve 21 to slide along the moving groove of the storage sleeve 20 via the threaded block 24. Rotating the handwheel 28 drives the worm 27 to rotate, and the meshing of the worm wheel 26 and worm 27 drives the lead screw 25 to rotate. The transmission between the worm wheel 26 and worm 27 has a self-locking property to prevent displacement after telescopic extension. The telescopic sleeve 21 is slidably connected within the moving groove of the storage sleeve 20, and a threaded block 24 is fixed to one end of its surface. The threaded block 24 is threadedly connected to the lead screw 25 and slides within the moving groove of the storage sleeve 20. When the lead screw 25 rotates, it drives the threaded block 24 to slide along the moving groove through the threaded transmission, thereby causing the telescopic sleeve 21 to extend or retract into the storage sleeve 20. Adjusting the extension length of the telescopic sleeves 21 on both sides can change the overall wheel track of the device to adapt to the balance requirements of different working scenarios. The surface of the storage sleeve 20 end is connected to the guide wheel 23 through the rotating shaft frame. The guide wheel 23 fits against the surface of the telescopic sleeve 21, which can reduce the friction between the telescopic sleeve 21 and the storage sleeve 20 when the telescopic sleeve 21 slides, and at the same time limit the sliding direction of the telescopic sleeve 21 to avoid deviation. The moving wheels 22 are divided into two groups. One group is fixed at both ends of the bottom of the storage sleeve 20, and the other group is fixed at the bottom of the extension end of the telescopic sleeve 21. When the device moves, the two groups of moving wheels 22 roll together to reduce the moving resistance. During operation, the telescopic sleeve 21 extends to the preset length, and the two groups of moving wheels 22 expand the support range and help improve the balance and stability of the device.

[0027] Reference Figure 3 The bottom of the flooring 8 is fixed with an anti-slip pad made of rubber. The anti-slip pad has anti-slip textures on its surface, which can increase the friction between the flooring 8 and the ground, and improve the stability of the device during support. The rubber anti-slip pad at the bottom of the flooring 8 improves the support stability by increasing friction and adhering to the ground, preventing horizontal displacement caused by the force of the crane 2 during operation and avoiding slippage of the support. The anti-slip textures on the surface of the anti-slip pad can further fill the small depressions in the ground, making the contact area between the flooring 8 and the ground larger and the adhesion tighter. Even on rough or slightly damp construction ground, it can reduce the relative sliding between the flooring 8 and the ground, and further enhance the stability of the support.

[0028] The highly adjustable structure is flexible and adaptable to complex ground environments, completely eliminating the risk of support suspension. The support arm 6 adopts a threaded transmission structure with a screw sleeve and screw shaft 7 at the end, which, together with the end plate 8, allows for precise and fine adjustment of the support height. The plate 8 moves synchronously with the screw shaft 7, and the ground contact height of each support arm 6 can be adjusted individually according to the difference in the flatness of the construction ground. Whether there are minor depressions or bumps in the ground, or the ground has a small slope, fine adjustment can ensure that all four sets of plate 8 are tightly attached to the ground, completely avoiding the problem of uneven force and support swaying caused by the support arm 6 being suspended. There is no need to perform secondary leveling of the construction ground in advance, reducing the pre-construction preparation cost.

[0029] The ratchet 9 rotates synchronously with the tilting shaft 5. The pawl 10 is tightly engaged with the ratchet 9 in its natural state, allowing the support arm 6 to rotate only in the unfolding support direction and completely prohibiting it from rotating in the folding and storage direction. Even if the support arm 6 is subjected to a large reverse force during the hoisting operation, it can be locked by the meshing teeth of the ratchet 9 and the pawl 10 to prevent the support arm 6 from tilting on its own, thus avoiding safety risks from the transmission level.

[0030] Multi-wheel coordinated support enhances ground contact and force distribution. The two sets of moving wheels 22 have clear division of labor and work together. One set is fixed at both ends of the bottom of the storage sleeve 20 as the basic support wheel of the device, and the other set is fixed at the bottom of the extension end of the telescopic sleeve 21 and moves synchronously with the telescopic sleeve 21. During operation, all four sets of moving wheels 22 contact the ground together, forming a symmetrical multi-wheel support layout. This avoids the problem of local overload when supported by a single wheel or double wheel, and reduces the local pressure on the ground by the contact between the multiple wheels and the ground. At the same time, the auxiliary support mechanism 3 further improves the overall balance and stability, forming a double stable guarantee of support and multi-wheel auxiliary balance.

[0031] Adaptable to lifting operations with different loads, for small load lifting, the telescopic sleeve 21 can be extended to a medium length, balancing balance and space occupation. For large load lifting, the telescopic sleeve 21 can be fully extended to maximize wheelbase to resist overturning force. For irregular load lifting, the center of gravity of the device can be finely adjusted by individually adjusting the length of the telescopic sleeve 21 on one side to ensure overall balance during lifting. It can adapt to various load types of lifting needs without replacing telescopic components of different specifications, improving the reusability and cost-effectiveness of the device.

Claims

1. A foldable lifting boom support device for building construction, comprising a base (1), characterized in that: It also includes a crane (2), a support mechanism (3), and a telescopic mechanism (19). The crane (2) is bolted to the surface of the base (1). The support mechanism (3) is installed on the surface of the base (1). The support mechanism (3) includes a folding and flipping seat (4), a flipping shaft (5), a support arm (6), a screw shaft (7), and a floor plate (8). The four sets of folding and flipping seats (4) are fixed at the four corners of the surface of the base (1). The flipping shaft (5) is rotatably connected to the inside of the folding and flipping seat (4). The support arm (6) is fixed to the surface of the flipping shaft (5) and fits into the flipping groove opened inside the folding and flipping seat (4). The screw shaft (7) is threadedly connected to the support through a screw sleeve. At the end of the support arm (6), a rotating disk is fixed at one end of the screw shaft (7), and the floor (8) is fixed at the other end of the screw shaft (7). The telescopic mechanism (19) is fixed on the surface of the base (1). The telescopic mechanism (19) includes a storage sleeve (20), a telescopic rod (21), and a moving wheel (22). The storage sleeve (20) is fixed on both sides of the surface of the base (1). The telescopic rod (21) is slidably connected in the moving groove opened inside the storage sleeve (20). There are two sets of moving wheels (22). One set of moving wheels (22) is fixed at both ends of the bottom of the storage sleeve (20), and the other set of moving wheels (22) is fixed at the bottom of the extension end of the telescopic rod (21).

2. The foldable lifting boom support device for building construction according to claim 1, characterized in that: The support mechanism (3) also includes a ratchet (9), a pawl (10) and a lifting frame (11). The ratchet (9) is fixed on the surface of the flip shaft (5) and is located on the outside of the folding flip seat (4). The pawl (10) is hinged to the surface of the folding flip seat (4) through a hinge seat and is engaged with the ratchet (9). The lifting frame (11) has a U-shaped structure and is hinged to the surface of the pawl (10) through a hinge shaft.

3. The foldable lifting boom support device for building construction according to claim 2, characterized in that: A positioning plate (12) is fixedly connected to the side of the folding and flipping seat (4) near the lifting frame (11). The lifting frame (11) is slidably connected in the positioning groove opened inside the positioning plate (12). A spring (13) is fixedly connected between the positioning plate (12) and the pawl (10). The spring (13) can push the pawl (10) to always keep it in contact with the ratchet (9) to prevent the support arm (6) from flipping over on its own during the support process.

4. The foldable crane boom support device for building construction according to claim 1, characterized in that: A locking buckle (14) is fixed to one end of the support arm (6) near the folding and flipping seat (4). A locking seat (15) is fixed to the surface of the folding and flipping seat (4). A locking pin (16) is slidably connected inside the locking seat (15). A locking hole adapted to the locking pin (16) is opened inside the locking buckle (14). A pull rod (18) is fixed to one side of the surface of the locking pin (16). A pull groove adapted to the pull rod (18) is opened inside the locking seat (15). A spring (17) is fixed between the locking seat (15) and the locking pin (16). The pull rod (18) can push the locking pin (16) to keep it in the locking buckle (14) to prevent the support arm (6) from accidentally coming off after folding.

5. A foldable lifting boom support device for building construction according to claim 1, characterized in that: The telescopic mechanism (19) also includes a guide wheel (23), a threaded block (24) and a lead screw (25). The guide wheel (23) is rotatably connected to the end surface of the storage sleeve (20) through a rotating shaft bracket. The surface of the storage sleeve (20) is provided with a through groove that matches the guide wheel (23), and the surface of the guide wheel (23) is in contact with the surface of the telescopic rod (21). The threaded block (24) is fixed to one end of the surface of the telescopic rod (21). The lead screw (25) is rotatably connected to the surface of the storage sleeve (20) through a bearing seat, and the lead screw (25) is threadedly connected to the threaded block (24). The surface of the storage sleeve (20) is provided with a moving groove that matches the threaded block (24).

6. A foldable lifting boom support device for building construction according to claim 5, characterized in that: A mounting bracket is fixed to the surface of the storage sleeve (20). Inside the mounting bracket, a worm (27) is rotatably connected via a bearing. A worm wheel (26) is fixed to one end of the lead screw (25). The worm (27) and the worm wheel (26) are meshed together. A handwheel (28) is fixed to one end of the worm (27). Rotating the handwheel (28) can drive the worm (27) to rotate. The lead screw (25) is driven to rotate through the meshing transmission between the worm wheel (26) and the worm (27). In turn, the telescopic sleeve (21) is driven to slide along the moving groove of the storage sleeve (20) through the threaded block (24).

7. A foldable lifting boom support device for building construction according to claim 1, characterized in that: The bottom of the flooring (8) is fixed with an anti-slip pad. The anti-slip pad is made of rubber and has anti-slip texture on its surface, which can increase the friction between the flooring (8) and the ground and improve the stability of the device when it is supported.

Images