Span adjusting device of hydraulic driving beam lifting machine

Abstract

The utility model relates to bridge construction device technical field, concretely is a kind of hydraulic drive beam lifting machine span adjusting device, including truss girder, the truss girder is equipped with by drive equipment and lifting appliance and is composed of lifting mechanism, and the both sides of the truss girder are equipped with support leg, the both sides of the bottom end of the truss girder are equipped with sliding control seat, the outside of sliding control seat inside is equipped with the guide block connected with the top end of support leg, the inside of sliding control seat is also equipped with the push mechanism of drive guide block transverse displacement, the push mechanism is composed of hydraulic cylinder, push plate and reinforcing connecting arm, and the outside of the both sides of sliding control seat is equipped with the auxiliary guide structure that is composed of guide sleeve and support shaft. This hydraulic drive beam lifting machine span adjusting device can realize the quick adjustment of main beam span, improve the adjustment efficiency and security, enhance the application range and on-site adaptability of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge construction equipment, specifically a hydraulically driven beam lifting machine span adjustment device. Background Technology

[0002] Bridge gantry cranes are key pieces of equipment used in bridge construction for transporting and hoisting precast bridge beams, and are widely used in infrastructure construction such as railways and highways. With the diversification of bridge structural forms, higher demands are placed on the adaptability of bridge gantry cranes. In particular, the ability to flexibly adjust the main beam span of the crane under different pier spacing conditions directly affects the equipment's scope of application and construction efficiency.

[0003] Some existing beam lifting machines have a certain span adjustment capability, usually by installing detachable extension sections at both ends of the truss main beam or reducing the end segments of the main beam for adjustment. This type of structure is mostly fixed by setting a large number of connectors between the main beam and the extension section to achieve adaptability to different spans. However, this adjustment method has obvious shortcomings in practical applications. Since the span adjustment depends on the manual disassembly and reinstallation of the connectors, the operation process is cumbersome, labor-intensive, and the adjustment efficiency is low. At the same time, frequent disassembly and reassembly can easily cause wear and tear on the connection parts or loosening of the structure, affecting the stability and safety of the whole machine. Utility Model Content

[0004] The purpose of this utility model is to provide a hydraulically driven beam lifting machine span adjustment device to solve the problems mentioned in the background art, such as cumbersome operation, high labor intensity, low adjustment efficiency, and impact on structural stability in the current beam lifting machine span adjustment process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulically driven beam lifting machine span adjustment device, comprising a truss-type main beam, on which a lifting mechanism consisting of a drive device and a lifting device is provided, and legs are provided on both sides of the truss-type main beam. Sliding control seats are installed on both sides of the bottom end of the truss-type main beam, and guide blocks connected to the top ends of the legs are provided on the outer side of the inner side of the sliding control seat. A pushing mechanism for driving the guide blocks to move laterally is also provided inside the sliding control seat. The pushing mechanism consists of a hydraulic cylinder, a push plate, and a reinforcing connecting arm. Furthermore, auxiliary guiding structures consisting of guide sleeves and support shafts are provided on the outer sides of both sides of the sliding control seat. Preferably, the guide sleeves are welded and fixed to the outer edge walls on both sides of the outer end of the sliding control seat, and the support shafts horizontally penetrate the interior of the guide sleeves, with the outer ends of the support shafts fixedly connected to the outer side walls of the guide blocks via connectors. Preferably, the hydraulic cylinder of the pushing mechanism is fixed to the inner end of the sliding control seat, the push plate is fixed to the output end of the hydraulic cylinder, and the reinforcing arm is symmetrically connected between the guide block and the push plate. Preferably, reinforcing ribs are welded and fixed to both corners at the connection between the reinforcing arm and the push plate, and the reinforcing ribs are generally triangular in structure. Preferably, T-shaped guide seats are welded and fixed to both inner walls of the sliding control seat, and T-shaped guide blocks that slide with the T-shaped guide seats are welded and fixed to both outer walls of the guide block.

[0006] Preferably, a rectangular groove is provided at the bottom of the outer end of the guide block, and a support leg positioning plate is detachably installed in the rectangular groove. Connecting rings are symmetrically provided on the outer walls of both sides of the support leg positioning plate. Fixing rings are provided on the inner walls of both sides of the rectangular groove at the bottom of the guide block. A reinforcing pin is inserted between the connecting rings and the fixing rings.

[0007] Compared with existing technologies, the beneficial effects of this utility model are as follows: This hydraulically driven beam lifting machine span adjustment device can achieve rapid adjustment of the main beam span, improving adjustment efficiency and safety, and enhancing the equipment's applicability and on-site adaptability. The device uses a hydraulic cylinder to drive the push plate and reinforced connecting arm in linkage, causing the guide block to move smoothly laterally within the sliding control seat. Combined with the auxiliary guiding structure formed by the guide sleeve and support shaft, it ensures the stability and accuracy of the span adjustment process. Simultaneously, the overall structure is compact and easy to operate, significantly reducing manual intervention and avoiding the structural loosening risks associated with traditional disassembly and assembly of connecting parts, thus improving the equipment's operational safety and on-site adaptability. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of a hydraulically driven beam lifting machine span adjustment device according to the present invention;

[0009] Figure 2This is a schematic diagram of the internal structure of the sliding control seat of a hydraulically driven beam lifting machine span adjustment device according to this utility model;

[0010] Figure 3 This is a side view of the sliding control seat of a hydraulically driven beam lifting machine span adjustment device according to the present invention.

[0011] In the diagram: 1. Truss-type main beam; 2. Lifting mechanism; 3. Outrigger; 4. Sliding control seat; 5. Guide block; 6. Guide sleeve; 7. Support shaft; 8. Pushing mechanism; 81. Hydraulic cylinder; 82. Push plate; 83. Reinforcing connecting arm; 9. Outrigger positioning plate; 10. Connecting ring; 11. Fixing ring; 12. Reinforcing pin; 13. T-shaped guide seat; 14. T-shaped guide block; 15. Reinforcing rib plate. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Please see Figure 1-3This utility model provides a technical solution: a hydraulically driven beam lifting machine span adjustment device, including a truss-type main beam 1. The truss-type main beam 1 is equipped with a lifting mechanism 2 consisting of a drive unit and a lifting device, used to realize the lifting and lowering operations of heavy objects such as beams. Specifically, the drive unit drives the lifting device to move up and down through a control system, completing the vertical movement during beam lifting operations. Both sides of the truss-type main beam 1 are equipped with support legs 3, and the bottom end of each support leg 3 is equipped with a roller mechanism. This mechanism consists of multiple traveling rollers, axles, and support bearings. The rollers are mounted on brackets at the bottom of the support legs 3 via axles and can rotate freely around the axles, enabling flexible movement of the beam lifting machine on tracks or the ground. Both sides of the bottom end of the truss-type main beam 1 are equipped with sliding control seats 4. The outer side of the sliding control seat 4 is provided with a guide block 5 connected to the top of the outrigger 3. The sliding control seat 4 is also provided with a pushing mechanism 8 that drives the guide block 5 to move laterally. The pushing mechanism 8 is composed of a hydraulic cylinder 81, a push plate 82, and a reinforcing connecting arm 83. The outer sides of both sides of the sliding control seat 4 are provided with an auxiliary guiding structure composed of a guide sleeve 6 and a support shaft 7. When the hydraulic cylinder 81 of the pushing mechanism 8 is activated, it pushes the push plate 82 to move outward. The push plate 82 transmits the thrust to the guide block 5 through the reinforcing connecting arm 83, causing the guide block 5 to slide laterally inside the sliding control seat 4. At the same time, the guide block 5 achieves stable sliding through the auxiliary guiding structure composed of the support shaft 7 and the guide sleeve 6, ensuring the directional accuracy and smooth operation during the pushing process, thereby driving the outrigger 3 along the sliding control mechanism. The lateral movement of the control seat 4 enables dynamic adjustment of the overall span of the truss main beam 1. This structure, through the synergistic effect of hydraulic drive and mechanical guidance, solves the problems of cumbersome operation, low efficiency, and poor structural stability caused by the reliance on manual disassembly and assembly of connecting parts for span adjustment in existing beam lifting machines. It achieves automated operation of span adjustment, improving adjustment efficiency and the safety and reliability of the entire machine. The guide sleeve 6 is welded and fixed to the outer wall of the outer edges on both sides of the outer end of the sliding control seat 4. The support shaft 7 horizontally penetrates the interior of the guide sleeve 6, and the outer end of the support shaft 7 is fixedly connected to the outer wall of the outer side of the guide block 5 through a connector. This structure allows the support shaft 7 to slide horizontally inside the guide sleeve 6, ensuring that the guide block 5 moves smoothly along a predetermined trajectory and avoiding deviation or jamming. This mechanism ensures that the outrigger 3 moves synchronously with the guide block 5, achieving precise adjustment of the main beam span. The hydraulic cylinder 81 of the pushing mechanism 8 is fixed to the inner end of the sliding control seat 4 via a support block. The push plate 82 is welded and fixed to the output end of the hydraulic cylinder 81. The reinforcing connecting arms 83 are symmetrically connected between the guide block 5 and the push plate 82. When the hydraulic cylinder 81 is activated, its output end drives the push plate 82 to move outward along the axis of the hydraulic cylinder 81. The push plate 82 transmits the thrust evenly to the guide block 5 through the reinforcing connecting arms 83, allowing the guide block 5 to slide stably laterally inside the sliding control seat 4. The force distribution of the two reinforcing connecting arms 83 is balanced, effectively avoiding eccentric loading and improving the synchronicity and structural stability of the pushing process, thereby achieving precise adjustment of the position of the outrigger 3.To ensure the efficiency and reliability of the main beam span adjustment, reinforcing ribs 15 are welded and fixed to both corners of the connection between the connecting arm 83 and the push plate 82. These reinforcing ribs 15 have a triangular structure, which effectively disperses stress, improves the rigidity of the connection, and prevents deformation or breakage due to long-term stress. This enhances the load-bearing capacity and operational reliability of the entire pushing mechanism 8, extending the equipment's service life. T-shaped guide seats 13 are welded and fixed to both inner walls of the sliding control seat 4, and T-shaped guide blocks 14 that slide with the T-shaped guide seats 13 are welded and fixed to both outer walls of the guide block 5. This structure ensures that when the guide block 5 moves laterally within the sliding control seat 4... The T-shaped guide block 14 and the T-shaped guide seat 13 form a sliding fit, ensuring that the guide block 5 slides smoothly and accurately along the set trajectory, avoiding deviation, shaking, or jamming during operation. This improves the guiding accuracy and overall structural stability during span adjustment, ensuring reliable operation of the equipment under frequent adjustments and heavy loads. Simultaneously, both ends of the push plate 82 are also slidably connected to the T-shaped guide seat 13 via sliders. A rectangular groove is provided at the bottom of the outer end of the guide block 5, within which a support leg positioning plate 9 is detachably installed. The four corners of the support leg positioning plate 9 are bolted to the rectangular groove at the bottom of the guide block 5. The top of the support leg 3 is welded to the support leg positioning plate 9, and connecting rings 10 are symmetrically welded to the outer walls of both sides of the support leg positioning plate 9. The inner walls of both sides of the rectangular groove at the bottom of the guide block 5 are welded to... A reinforcing pin 12 is inserted between the fixed ring 11, the connecting ring 10, and the fixed ring 11. The leg positioning plate 9 of this structure can be pre-removed from the rectangular groove at the bottom of the guide block 5 by removing the bolts, thus separating the leg 3 from the guide block 5. At this time, the pushing mechanism 8 can directly push the guide block 5 laterally along the sliding control seat 4 to the desired position without causing the leg 3 to move synchronously, thereby achieving independent pre-positioning of the guide block 5. After the guide block 5 is adjusted to the correct position, the leg positioning plate 9 is reinstalled and fixed to the bottom of the guide block 5, and the reinforcing pin 12 is sequentially inserted into the connecting ring 10 and the fixed ring 11 to complete the connection between the leg 3 and the guide block 5. This design avoids the inconvenience of adjustment caused by the need for overall linkage in traditional structures, improves the flexibility and operational efficiency of span adjustment, and ensures the stability and safety of the connection structure.

[0014] Working principle: When using the span adjustment device of the hydraulically driven beam lifting machine, firstly, the outrigger positioning plate 9 is removed from the rectangular groove at the bottom of the guide block 5 by bolts, so that the outrigger 3 is disconnected from the guide block 5. Then, the hydraulic cylinder 81 is started, and its output end drives the push plate 82 to push outward along the axis of the hydraulic cylinder 81. The push plate 82 transmits the thrust to the guide block 5 through the reinforcing connecting arm 83. During this process, the guide block 5 slides laterally inside the sliding control seat 4. At the same time, the T-shaped guide block 14 on the outside of the guide block 5 slides synchronously in the T-shaped guide seat 13, ensuring that the guide block 5 moves smoothly and accurately. While the guide block 5 moves, its outer end slides inside the guide sleeve 6 through the support shaft 7, further ensuring the stability of the guide block 5. After the guide block 5 slides to the target position, the hydraulic cylinder 81 is stopped. Then, the outrigger positioning plate 9 is reinstalled to the bottom of the guide block 5, and the reinforcing pin 12 passes through the connecting ring 10 and the fixing ring 11 in sequence, so that the top of the outrigger 3 is connected to the guide block 5, thus completing a series of operations.

[0015] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydraulically driven beam lifting machine span adjustment device, comprising a truss-type main beam (1), wherein the truss-type main beam (1) is provided with a lifting mechanism (2) consisting of a drive device and a lifting device, and both sides of the truss-type main beam (1) are provided with support legs (3), characterized in that: Sliding control seats (4) are installed on both sides of the bottom end of the truss main beam (1). The outer side of the sliding control seat (4) is provided with a guide block (5) connected to the top of the support leg (3). The sliding control seat (4) is also provided with a pushing mechanism (8) that drives the guide block (5) to move laterally. The pushing mechanism (8) is composed of a hydraulic cylinder (81), a push plate (82) and a reinforcing connecting arm (83). The outer sides of the sliding control seat (4) are provided with an auxiliary guiding structure composed of a guide sleeve (6) and a support shaft (7).

2. The span adjustment device for a hydraulically driven beam lifting machine according to claim 1, characterized in that: The guide sleeve (6) is welded and fixed on the outer wall of the outer edge on both sides of the outer end of the sliding control seat (4). The support shaft (7) passes horizontally through the inside of the guide sleeve (6), and the outer end of the support shaft (7) is fixedly connected to the outer wall of the outer end of the guide block (5) through a connector.

3. The span adjustment device for a hydraulically driven beam lifting machine according to claim 1, characterized in that: The hydraulic cylinder (81) of the pushing mechanism (8) is fixed inside the sliding control seat (4) at the inner end, the push plate (82) is fixed at the output end of the hydraulic cylinder (81), and the reinforcing arm (83) is symmetrically connected between the guide block (5) and the push plate (82).

4. The span adjustment device for a hydraulically driven beam lifting machine according to claim 3, characterized in that: The reinforcing arm (83) and the push plate (82) are connected at both corners with reinforcing ribs (15) welded and fixed, and the reinforcing ribs (15) are triangular in structure.

5. The span adjustment device for a hydraulically driven beam lifting machine according to claim 1, characterized in that: The inner walls of both sides of the sliding control seat (4) are welded and fixed with T-shaped guide seats (13), and the outer walls of both sides of the guide block (5) are welded and fixed with T-shaped guide blocks (14) that slide with the T-shaped guide seats (13).

6. The span adjustment device for a hydraulically driven beam lifting machine according to claim 1, characterized in that: The bottom of the outer end of the guide block (5) is provided with a rectangular groove. A support leg positioning plate (9) is detachably installed in the rectangular groove. Connecting rings (10) are symmetrically provided on the outer walls of both sides of the support leg positioning plate (9). Fixing rings (11) are provided on the inner walls of both sides of the rectangular groove at the bottom of the guide block (5). A reinforcing pin (12) is inserted between the connecting ring (10) and the fixing ring (11).

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