Posture fine adjustment device for beam lifter trolley

Abstract

The utility model relates to the technical field of beam lifters, in particular to a posture fine adjustment device for a beam lifter trolley, which comprises symmetrically arranged frame bodies, a trolley mechanism I is arranged on the two frame bodies, the trolley mechanism I can horizontally move back and forth along the frame bodies, and the trolley mechanism I comprises symmetrically arranged cross beams. The cross beam is provided with a trolley mechanism I and a trolley mechanism II, the trolley mechanism II is symmetrically provided with hoisting mechanisms, and the whole trolley mechanism II can horizontally move in the left-right direction along the cross beam. The hoisting device has the advantages that through the design of the upper-layer trolley structure and the lower-layer trolley structure, the hoisting mechanisms can well adapt to the position of a hoisted object; the beam lifter can be moved to the position over a lifted object more quickly, the frequency of adjusting the overall position of the beam lifter is reduced, it can be ensured that acting points of the lifting appliance on the lifted object are evenly distributed, the stability during lifting is further ensured, local stress concentration of the lifting appliance is prevented, and the phenomenon that the lifting appliance is broken due to the fact that local stress is too large is reduced.

Description

Technical Field

[0001] This utility model relates to the field of beam lifting machine technology, and in particular to a posture fine-tuning device for a beam lifting machine trolley. Background Technology

[0002] Currently, a beam lifting machine is a type of gantry crane specifically designed for bridge construction. It mainly consists of a main beam, outriggers, and a crane trolley, making it easy to assemble, disassemble, and transport. Compared to ordinary gantry cranes, it is more convenient, faster, and more economical to install. Two beam lifting machines can work together to lift precast beams, or a single crane can be equipped with double lifting devices. The lifting capacity of two lifting machines simultaneously is generally 450 tons each, while a single lifting machine can typically reach 900 tons. Equipped with outrigger travel, trolley travel, and lifting equipment, it can achieve all-around mechanized operation. It is mainly used to lift precast beams from the beam fabrication platform to the beam storage platform. After the precast beams have cured, they are transported from the storage platform to the beam transport vehicle. It also serves as a lifting device for assembling and disassembling bridge erecting machines and is used for erecting dry bridges with low piers. It is suitable for the construction of frequently moving road bridges.

[0003] The prior art, disclosed in CN214570231U, discloses a high-stability beam lifting machine, including a lower beam with a trolley traveling mechanism mounted at both ends. An upper beam is positioned above the lower beam, and crane outriggers are located between the lower and upper beams. A main beam is fixed between the upper beams. A lifting mechanism is mounted on the crane trolley. An anti-derailment device is fixed to the end of the lower beam, comprising a fixing plate, an anti-roller bracket with anti-rollers, a support rod within a support frame below the anti-roller bracket, and a stroke measuring device on the outer side of the support frame. The stroke measuring device includes an absolute encoder fixed to the outer side of the support frame, a data transmission module next to the absolute encoder, and a power module, data receiving module, terminal control module, display module, and alarm module located in the driver's cab. This invention has a simple structure, reduces derailment and rail wear on the beam lifting machine, and allows for adjustment of the lifting height, making it suitable for different construction sites.

[0004] However, the existing technologies still have certain shortcomings in use: as mentioned above, most gantry crane trolleys in real life can only move horizontally in one direction along the main beam, or the entire device can be adjusted. In addition, the position of the object being lifted is not fixed in real life. The overall movement of the gantry crane cannot effectively move the lifting device directly above the object being lifted. Either the overall position of the gantry crane needs to be adjusted, which is time-consuming and laborious, or the lifting device needs to be directly tied to the object. This results in uneven distribution of the main force points when the lifting device is tied to the object being lifted, which leads to concentrated force on some parts of the lifting device. This makes it easy for the object being lifted to shift to a certain extent, which can easily damage the lifting device and cause it to break, resulting in the object being lifted falling. Therefore, the existing technologies need to be further improved. Utility Model Content

[0005] The purpose of this invention is to provide a posture fine-tuning device for a beam lifting machine trolley to solve the problems mentioned in the background art.

[0006] The present invention adopts the following technical solution: a posture fine adjustment device for a beam lifting machine trolley, comprising symmetrically arranged frames, a trolley mechanism 1 on the two frames, the trolley mechanism 1 being able to move horizontally along the frame in the front-back direction, the trolley mechanism 1 including symmetrically arranged crossbeams, a trolley mechanism 2 on the crossbeams, a hoisting mechanism symmetrically arranged on the trolley mechanism, and the trolley mechanism 2 being able to move horizontally along the crossbeams in the left-right direction.

[0007] Optionally, the trolley mechanism also includes a traveling frame mounted on the frame. The bottom surface of the traveling frame is rotatably equipped with several traveling wheels, and the top surface of the frame is equipped with a track. The traveling wheels cooperate with the track. The inside of the traveling frame is equipped with a drive motor. The output shaft of the drive motor is fixedly connected to one of the traveling wheels, and two crossbeams are fixed at intervals on the top surface of the traveling frame.

[0008] Optionally, the trolley mechanism two includes a grid-shaped support frame. Several pillars are symmetrically arranged on the front and back of the bottom of the support frame. A second track is fixedly installed on the top surface of the crossbeam. A rectangular groove is opened on the bottom surface of each pillar. The rectangular groove is adapted to the size of the second track and slides with the track. A support first is provided on one side of the top surface of each of the two crossbeams. A support second is provided on the side of the pillar close to the support first. A hydraulic push rod is provided on the support first. The fixed end of the hydraulic push rod is hinged to the support first, and the moving end of the hydraulic push rod is hinged to the support second.

[0009] Optionally, the second trolley mechanism also includes limiting components located on both sides of the support column.

[0010] Optionally, the limiting component includes two symmetrically arranged mounting plates, which are symmetrically fixed to the side of the support column. The mounting plates slide in contact with the top surface of the crossbeam, and the mounting plates extend beyond the side of the crossbeam. A limiting shaft is symmetrically inserted into the top surface of the part of the mounting plate that extends beyond the side of the crossbeam. Slide grooves are symmetrically opened on the front and rear sides of the crossbeam. A rotating wheel is rotatably provided at the bottom end of the limiting shaft, and the rotating wheel rolls in the slide groove.

[0011] Optionally, reinforcing ribs are also provided between the top surface of the mounting plate and the side of the support column.

[0012] Optionally, a top cover with a herringbone shape is fixedly installed on the top surface of the bracket.

[0013] Optionally, the hoisting mechanism includes a drum assembly, which is located on the top surface of the support. A limit plate is provided on the bottom surface of the support, and a fixed pulley group is provided on the bottom surface of the limit plate. A movable pulley group is provided below the fixed pulley. The hoisting rope in the drum assembly is wound around the fixed pulley group and the movable pulley group in sequence, and finally the tail end of the hoisting rope is fixed to the bottom surface of the support. The bottom surfaces of the movable pulley groups in the two hoisting mechanisms are jointly provided with a lifting device.

[0014] Optionally, the fixed pulley block and the movable pulley block are located between the two crossbeams.

[0015] Optionally, the fixed pulley blocks and movable pulley blocks can be staggered.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] 1. In this application, two frames are equipped with a trolley mechanism one, which can move horizontally along the frame in the front-to-back direction. Trolley mechanism one includes a symmetrically arranged crossbeam, on which a trolley mechanism two is arranged. A lifting mechanism is symmetrically arranged on the trolley mechanism two. The trolley mechanism two as a whole can move and adjust in the left-to-right direction along the crossbeam. Through the design of the upper and lower trolley structure, the freedom of movement and adjustment of the lifting device is increased, allowing the lifting mechanism to adapt well to the position of the object being lifted. This allows the lifting mechanism to move more quickly to the top of the object being lifted, reducing the number of times the overall position of the beam lifting machine needs to be adjusted. It also ensures that the force distribution of the lifting device on the object being lifted is uniform, further ensuring the stability during lifting, preventing localized force concentration on the lifting device, reducing the phenomenon of lifting device breakage due to excessive localized force, improving the service life of the device, expanding the application range of the device, improving the safety of the device, and making it more practical.

[0018] 2. In this application, the trolley mechanism two also includes limiting components disposed on both sides of the support column. By setting the limiting components, not only can the stability of the trolley mechanism two when moving be enhanced, but also derailment can be effectively prevented.

[0019] 3. In this application, a reinforcing rib is also provided between the top surface of the mounting plate and the side of the support column. By providing the reinforcing rib, the connection strength between the mounting plate and the support column is enhanced, thereby improving stability.

[0020] 4. In this application, a top cover is fixedly installed on the top surface of the support. The top surface of the top cover is in the shape of a V. By setting the top cover, the hoisting mechanism can be effectively prevented from being directly exposed to the sun and protected from rain, thereby improving the service life of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 These are schematic diagrams of the first and second trolley mechanisms of this utility model.

[0023] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0024] Figure 4 This is a schematic diagram of the hoisting mechanism of this utility model;

[0025] Figure 5 This is a side view of the fixed pulley block and the movable pulley block of this utility model.

[0026] In the diagram: 1. Frame; 2. Trolley Mechanism 1; 3. Trolley Mechanism 2; 4. Lifting Mechanism; 5. Crossbeam; 6. Traveling Frame; 7. Traveling Wheel; 8. Track 1; 9. Drive Motor 1; 10. Support Column; 11. Bracket; 12. Track 2; 13. Rectangular Slot; 14. Support 1; 15. Support 2; 16. Hydraulic Push Rod; 17. Mounting Plate; 18. Limit Shaft; 19. Slide Groove; 20. Rotary Wheel; 21. Reinforcing Rib; 22. Top Cover; 23. Drum Assembly; 24. Limit Plate; 25. Fixed Pulley Block; 26. Movable Pulley Block; 27. Lifting Gear. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only a part of the embodiments disclosed in this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Various non-limiting embodiments of this utility model are described in detail below. Any number of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0029] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0030] Please see Figure 1-5 The present invention will now be described in detail with reference to the accompanying drawings and embodiments: A fine-tuning device for the attitude of a beam lifting machine trolley includes symmetrically arranged frame bodies 1. Trolley mechanisms 1-2 are mounted on the two frame bodies 1. Trolley mechanisms 1-2 can move horizontally along the frame bodies 1 in the front-back direction. Trolley mechanisms 1-2 include symmetrically arranged crossbeams 5. Trolley mechanisms 2-3 are mounted on the crossbeams 5. Lifting mechanisms 4 are symmetrically arranged on the trolley mechanisms. Trolley mechanisms 2-3 can move and adjust horizontally along the crossbeams 5. Through the design of the upper and lower trolley structures, the lifting mechanism 4 can adapt well to the position of the object being lifted, allowing it to move directly above the object. This ensures that the force distribution of the lifting device 27 on the object is uniform, further ensuring stability during lifting, preventing localized force concentration on the lifting device 27, reducing the possibility of breakage due to excessive localized force, improving the service life of the device, expanding its application range, and making it more practical. The frame body 1 is prior art and will not be described further here.

[0031] Please see Figure 2 The trolley mechanism 12 also includes a traveling frame 6 mounted on the frame 1. The bottom surface of the traveling frame 6 is rotatably equipped with several traveling wheels 7. The top surface of the frame 1 is fixedly equipped with a track 8. The traveling wheels 7 cooperate with the track 8. The inner side of the traveling frame 6 is fixedly equipped with a drive motor 9. The output shaft of the drive motor 9 is fixedly connected to one of the traveling wheels 7. Two crossbeams 5 are fixed at intervals on the top surface of the traveling frame 6.

[0032] Please see Figure 2 , 4 The trolley mechanism 2 3 includes a support 11, which is grid-shaped. Several support columns 10 are symmetrically arranged on the front and back of the bottom of the support 11. A second track 12 is fixedly installed on the top surface of the crossbeam 5. A rectangular groove 13 is opened on the bottom surface of each support column 10. The rectangular groove 13 is adapted to the size of the second track 12 and slides with the track. A first support 14 is fixedly installed on one side of the top surface of each of the two crossbeams 5. A second support 15 is fixedly installed on the side of the support column 10 close to the first support 14. A hydraulic push rod 16 is installed on the first support 14. The fixed end of the hydraulic push rod 16 is hinged to the first support 14, and the moving end of the hydraulic push rod 16 is hinged to the second support 15.

[0033] When the object being lifted is not directly below the lifting device 27, the hydraulic push rod 16 can be activated. The hydraulic push rod 16 pushes or pulls the support column 10 to move horizontally along the second track 12, so that the lifting device 27 can move directly above the object being lifted. This allows the lifting device 27 to evenly distribute the force on the object being lifted, so that the object can move smoothly when lifted, and avoids concentrated force and tilting of the object, reducing the possibility of the lifting device 27 breaking unexpectedly and causing the object to fall.

[0034] Furthermore, the trolley mechanism 2 3 also includes limiting components disposed on both sides of the support column 10. The setting of the limiting components enhances the stability of the trolley mechanism 2 3 when it moves and can also effectively prevent derailment.

[0035] Please see Figure 2-3 The limiting component includes two symmetrically arranged mounting plates 17, which are symmetrically fixed to the side of the support column 10. The mounting plates 17 slide in contact with the top surface of the crossbeam 5, and the mounting plates 17 extend beyond the side of the crossbeam 5. The top surface of the part of the mounting plates 17 extending beyond the side of the crossbeam 5 is symmetrically inserted and fixed with a limiting shaft 18. Slide grooves 19 are symmetrically opened on the front and rear sides of the crossbeam 5. A rotating wheel 20 is rotatably arranged at the bottom end of the limiting shaft 18, and the rotating wheel 20 rolls in the slide groove 19.

[0036] Please see Figure 3 A reinforcing rib 21 is also fixedly provided between the top surface of the mounting plate 17 and the side of the support column 10. The reinforcing rib 21 enhances the connection strength between the mounting plate 17 and the support column 10 and improves stability.

[0037] Please see Figure 2 A top cover 22 is fixedly installed on the top surface of the bracket 11. The top surface of the top cover 22 is in the shape of a V. The top cover 22 can effectively prevent the hoisting mechanism 4 from being directly exposed to the sun and protect it from rain.

[0038] Please see Figure 4 The hoisting mechanism 4 includes a drum assembly 23, which is fixedly mounted on the top surface of the support 11. A limit plate 24 is fixedly mounted on the bottom surface of the support 11, and a fixed pulley group 25 is fixedly mounted on the bottom surface of the limit plate 24. A movable pulley group 26 is mounted below the fixed pulleys. The hoisting rope in the drum assembly 23 is wound sequentially around the fixed pulley group 25 and the movable pulley group 26, and finally the end of the hoisting rope is fixed to the bottom surface of the support 11. The bottom surfaces of the movable pulley groups 26 in both hoisting mechanisms 4 are jointly fixedly mounted with a lifting device 27. The drum assembly 23, the fixed pulley group 25, the movable pulley group 26, and the lifting device 27 are existing technologies and will not be described in detail here.

[0039] Please see Figure 4-5 The fixed pulley block 25 and the movable pulley block 26 are located between the two crossbeams 5.

[0040] Please see Figure 4-5 The fixed pulley block 25 and the movable pulley block 26 are staggered to prevent interference during the operation of the hoisting rope.

[0041] When the object to be lifted needs to be moved, first start the drive motor 9, which drives the traveling wheel 7 to rotate. The traveling wheel 7 carries the traveling frame 6 to move forward and backward along the track 8, so that the lifting device 27 moves above the object to be lifted. When the lifting device 27 is not directly above the object to be lifted, start the hydraulic push rod 16, which pushes or pulls the bracket 11 to adjust its position in the left and right directions along the track 12 until the lifting device 27 is directly above the object to be lifted. Then, unwind the device through the drum assembly 23 so that the lifting device 27 contacts the top surface of the object to be lifted. The operator stabilizes the object to be lifted by the lifting device 27, then starts the drum assembly 23 to wind up the object to lift it. Then, start the drive motor 9 to move the object to the required location, and then lower the object to the ground through the drum assembly 23.

[0042] Based on the above description in this specification, those skilled in the art will also understand that the following terms, such as "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as a limitation on the present invention.

[0043] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A posture fine-tuning device for a beam lifting machine trolley, characterized in that: The device includes symmetrically arranged frames, with a trolley mechanism 1 mounted on each frame. The trolley mechanism 1 can move horizontally along the frame in the front-back direction. The trolley mechanism 1 includes symmetrically arranged crossbeams, with a trolley mechanism 2 mounted on the crossbeams. The trolley mechanism 2 is symmetrically arranged with a hoisting mechanism. The trolley mechanism 2 as a whole can move horizontally along the crossbeam in the left-right direction.

2. The attitude fine-tuning device for the trolley of a beam lifting machine according to claim 1, characterized in that: The trolley mechanism also includes a traveling frame mounted on the frame. The bottom surface of the traveling frame is rotatably equipped with several traveling wheels, and the top surface of the frame is equipped with a track. The traveling wheels cooperate with the track. The inside of the traveling frame is equipped with a drive motor. The output shaft of the drive motor is fixedly connected to one of the traveling wheels. Two crossbeams are fixed at intervals on the top surface of the traveling frame.

3. The attitude fine-tuning device for the trolley of the beam lifting machine according to claim 2, characterized in that: The second trolley mechanism includes a grid-shaped support frame. Several pillars are symmetrically arranged on the front and back of the bottom of the support frame. A second track is fixedly installed on the top surface of the crossbeam. A rectangular groove is opened on the bottom surface of each pillar. The rectangular groove is adapted to the size of the second track and slides with the track. A support first is provided on one side of the top surface of each of the two crossbeams. A support second is provided on the side of the pillar close to the support first. A hydraulic push rod is provided on the support first. The fixed end of the hydraulic push rod is hinged to the support first, and the moving end of the hydraulic push rod is hinged to the support second.

4. The attitude fine-tuning device for the trolley of the beam lifting machine according to claim 3, characterized in that: The second mechanism of the trolley also includes limiting components located on both sides of the support column.

5. The attitude fine-tuning device for the trolley of a beam lifting machine according to claim 4, characterized in that: The limiting component includes two symmetrically arranged mounting plates, which are symmetrically fixed to the side of the support column. The mounting plates slide in contact with the top surface of the crossbeam, and the mounting plates extend beyond the side of the crossbeam. The top surface of the mounting plates extending beyond the side of the crossbeam is symmetrically fitted with a limiting shaft. Slide grooves are symmetrically opened on the front and rear sides of the crossbeam. A rotating wheel is rotatably installed at the bottom end of the limiting shaft, and the rotating wheel rolls in the slide groove.

6. The attitude fine-tuning device for the trolley of a beam lifting machine according to claim 5, characterized in that: Reinforcing ribs are also provided between the top surface of the mounting plate and the side of the support column.

7. The attitude fine-tuning device for a beam lifting machine trolley according to claim 6, characterized in that: The top surface of the bracket is fixedly equipped with a top cover that is shaped like a V.

8. The attitude fine-tuning device for the trolley of a beam lifting machine according to claim 3, characterized in that: The hoisting mechanism includes a drum assembly, which is located on the top surface of the support. A limit plate is located on the bottom surface of the support, and a fixed pulley group is located on the bottom surface of the limit plate. A movable pulley group is located below the fixed pulley. The hoisting rope in the drum assembly is wound around the fixed pulley group and the movable pulley group in sequence, and finally the end of the hoisting rope is fixed to the bottom surface of the support. The bottom surfaces of the movable pulley groups in the two hoisting mechanisms are jointly provided with a lifting device.

9. The attitude fine-tuning device for a beam lifting machine trolley according to claim 8, characterized in that: The fixed pulley system and the movable pulley system are located between two crossbeams.

10. The attitude fine-tuning device for a beam lifting machine trolley according to claim 9, characterized in that: The fixed pulley system and the movable pulley system are set in a staggered manner.

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