Movable gantry

Abstract

This utility model provides a movable gantry frame, including a movable gantry frame with a fixed slide rail and multiple traveling wheels; a movable winch mechanism slidably connected to the fixed slide rail, the movable winch mechanism having a downwardly extending steel cable, the end of the steel cable being connected to a lifting connection position for lifting precast components; and an adjustment mechanism slidably mounted on the movable gantry frame and located below the fixed slide rail. The adjustment mechanism has a lifting adjustment position through which the steel cable passes and can move in a horizontal direction perpendicular to the fixed slide rail. The adjustment mechanism is used to adjust the components connected to the lifting connection position by means of the steel cable in the adjustment position. The movable gantry frame allows for flexible movement on the construction site via the traveling wheels at the bottom of the movable gantry frame, adapting to the operational needs of different areas; the movable winch mechanism lifts precast components via the steel cable and the lifting connection position, making operation convenient; and the adjustment mechanism can straighten the components connected to the lifting connection position.

Description

Technical Field

[0001] This utility model belongs to the technical field of lifting machinery and equipment, specifically relating to a movable gantry crane. Background Technology

[0002] A gantry crane is a lifting machine that uses a ground winch as its power source and has a suspended basket that runs vertically along a guide rail. Based on the shape of its frame structure, it is generally classified as a gantry-type material hoist. It is mainly used for the vertical transportation of materials in medium and small-sized projects, such as the hoisting of building materials and the lifting of small prefabricated components.

[0003] In the existing technology, in small precast component processing plants, there are many precast components that need to be handled and demolded, such as concrete fence posts, fence panels, cable troughs, etc. The number of single pours is large and the weight is large. Manual handling is inefficient and the damage rate of large machinery handling is high. Lifting and hoisting equipment is only suitable for hoisting within a fixed range. However, small components need to be moved frequently, and cranes, forklifts, etc. are used for back-and-forth transfer. Moreover, large machinery has low transport accuracy when transporting small components, and manual straightening is required, which is laborious, inefficient, and costly. [1] Utility Model Content

[0004] This utility model provides a movable gantry frame, which aims to solve the problems of poor flexibility, low accuracy, low efficiency, and high cost of existing small prefabricated component transfer equipment.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a movable gantry frame, comprising:

[0006] The movable gantry frame has a horizontally fixed slide rail at the top and multiple wheels at the bottom.

[0007] A mobile winch mechanism is slidably connected to the fixed slide rail. The mobile winch mechanism has a downwardly extending steel cable, the end of which is connected to a lifting connection position for lifting precast components.

[0008] An adjustment mechanism is slidably disposed on the movable gantry frame and located below the fixed slide rail; the adjustment mechanism has a lifting adjustment position through which the steel cable passes and which can move along a horizontal direction perpendicular to the fixed slide rail; the adjustment mechanism is used to adjust the steel cable in the adjustment position to straighten the component connected to the lifting connection position.

[0009] In one possible implementation, the extension direction of the fixed slide rail is defined as a first direction, and the direction perpendicular to and horizontal to the first direction is defined as a second direction.

[0010] The adjustment mechanism includes:

[0011] A sliding frame is slidably mounted on an auxiliary slide rail in the movable gantry frame along the first direction; the sliding frame has a horizontally penetrating long through groove.

[0012] A slider is slidably disposed in the long through groove along the second direction. An adjusting wheel is rotatably connected to the slider, the axis of rotation is disposed along the first direction, and the adjusting wheel extends out of the long through groove.

[0013] A lead screw is rotatably disposed within the sliding frame, with its rotation axis set along the second direction. The lead screw is helically connected to the slider and is used to drive the slider to slide when the lead screw rotates.

[0014] In one possible implementation, the adjustment mechanism further includes auxiliary rods, one end of each auxiliary rod being connected to the movable winch mechanism, and the other end being connected to the two ends of the sliding frame along the second direction.

[0015] In one possible implementation, the adjusting mechanism further includes an L-shaped support block and a rotating handle; one end of the long side of the L-shaped support block is fixed to the sliding frame, the other end of the long side of the L-shaped support block extends outward along the second direction, one end of the short side of the L-shaped support block is integrally connected to the extended end of the long side of the L-shaped support block, the other end of the short side of the L-shaped support block extends downward in the vertical direction, and the short side of the L-shaped support block is provided with a through hole for the lead screw to pass through; the rotating handle is fixed to the extended end of the lead screw.

[0016] In one possible implementation, sliding blocks are provided at both ends of the sliding frame, and each sliding block is slidably disposed on an auxiliary slide rail on the movable gantry frame along the second direction.

[0017] In one possible implementation, the mobile hoisting mechanism includes:

[0018] A sliding frame is slidably mounted on the fixed slide rail along the first direction;

[0019] The system includes multiple pulleys, each of which is rotatably connected to the sliding frame and is disposed within the fixed slide rail.

[0020] A drive unit is fixed to the sliding frame and is poweredly connected to one of the pulleys;

[0021] A winch is fixed at the bottom of the sliding frame, and the extended end of the winch is provided with a hook for connecting prefabricated components. The hook is the lifting connection position.

[0022] In one possible implementation, the driver is a stepper motor.

[0023] In this implementation, compared with the prior art, the traveling wheels at the bottom of the mobile gantry frame allow the gantry to move flexibly on the construction site, adapting to the operational needs of different areas; the mobile winch mechanism lifts precast components through steel cables and lifting connection points, making operation convenient; the adjustment mechanism can straighten the components connected to the lifting connection points, effectively solving the problem of tilting and swaying of precast components during hoisting, improving the stability and safety of hoisting, reducing the workload of manual straightening, and improving construction efficiency. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of the movable gantry frame provided in an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0026] Figure 3 for Figure 1 Enlarged structural diagram at point B;

[0027] Figure 4 for Figure 1 Enlarged structural diagram at point C;

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Moving gantry frame; 11. Fixed slide rail; 12. Traveling wheel; 20. Moving winch mechanism; 21. Sliding frame; 22. Pulley; 23. Driver; 24. Winch; 30. Adjusting mechanism; 31. Sliding frame; 311. Sliding plate; 312. Adjusting frame; 32. Slider; 321. Adjusting wheel; 33. Lead screw; 34. Auxiliary rod; 35. L-shaped support block; 36. Rotating handle. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] It should be noted that the terms "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", and "tail" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of a structure. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Additionally, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0034] Please refer to the following: Figures 1 to 4 The movable gantry frame provided by this utility model will now be described. The movable gantry frame includes a movable gantry frame 10, a movable winch mechanism 20, and an adjusting mechanism 30. The movable gantry frame 10 has a horizontally arranged fixed slide rail 11 at the top and multiple traveling wheels 12 at the bottom. The movable winch mechanism 20 is slidably connected to the fixed slide rail 11 and has a downwardly extending steel cable. The end of the steel cable is connected to a lifting connection position for lifting prefabricated components. The adjusting mechanism 30 is slidably disposed on the movable gantry frame 10 and located below the fixed slide rail 11. The adjusting mechanism 30 has a lifting adjustment position through which the steel cable passes and can move in a horizontal direction perpendicular to the fixed slide rail 11. The adjusting mechanism 30 is used to adjust the steel cable in the adjustment position to straighten the component connected to the lifting connection position.

[0035] The movable gantry frame provided in this embodiment, compared with the prior art, features wheels 12 at the bottom of the movable gantry frame 10, allowing for flexible movement of the gantry frame on the construction site and adapting to the operational needs of different areas. The movable winch mechanism 20 lifts precast components via steel cables and lifting connection points, offering convenient operation. The adjustment mechanism 30 can straighten the components connected to the lifting connection points, effectively solving the problem of tilting and swaying of precast components during hoisting, improving hoisting stability and safety, reducing the workload of manual straightening, and increasing construction efficiency.

[0036] This structural design integrates movement, lifting, and straightening functions into one compact and comprehensive unit, capable of meeting various needs for hoisting precast components in building construction, and possessing strong practicality and versatility. The traveling wheels 12 can be universal casters with brakes, facilitating the fixing of the gantry frame after it has been moved to the designated position. The steel cable of the moving winch mechanism 20 can be selected according to the appropriate specifications and materials based on the weight of the precast components, such as high-strength steel wire rope. The adjustment mechanism 30 can be equipped with graduated markings for precise control of the straightening degree by the operator. In actual use of this movable gantry frame, first, according to the needs of the construction site, push the moving gantry frame 10, use the traveling wheels 12 at the bottom to move the gantry frame to the appropriate position, and then fix the gantry frame using the brakes on the traveling wheels 12.

[0037] The precast component is connected to the winch 24 of the mobile hoisting mechanism 20 via a hook. The driver 23 (stepper motor) is started, which drives the pulley 22 to rotate, thereby driving the sliding frame 21 to move along the fixed slide rail 11, so that the mobile hoisting mechanism 20 is moved directly above the precast component. Then the winch 24 is started, and the precast component is slowly lifted up by steel cable.

[0038] During hoisting, if the precast component tilts, the operator can rotate the lead screw 33 by turning the handle 36. When the lead screw 33 rotates, it engages with the slider 32 in a helical manner, causing the slider 32 to slide along the second direction within the long through groove. The adjusting wheel 321 on the slider 32 moves accordingly, thereby adjusting the position of the steel cable and straightening the precast component. The sliding frame 31 of the adjusting mechanism 30 can slide along the auxiliary slide rail in the first direction, moving synchronously with the moving winch mechanism 20 to ensure timely and effective adjustment.

[0039] Throughout the operation, the auxiliary rod 34 enhances the connection stability between the adjustment mechanism 30 and the mobile winch mechanism 20, and the sliding blocks at both ends of the sliding frame 31 ensure the smooth movement of the adjustment mechanism 30, enabling the gantry to efficiently, safely and stably complete the lifting and straightening of precast components.

[0040] In some embodiments, the adjustment mechanism 30 may employ, for example... Figures 1 to 3 The structure shown. See also Figures 1 to 3 The extension direction of the fixed slide rail 11 is defined as the first direction, and the direction that is perpendicular to and horizontal to the first direction is defined as the second direction.

[0041] The adjusting mechanism 30 includes a sliding frame 31, a slider 32, and a lead screw 33. The sliding frame 31 is slidably mounted on an auxiliary slide rail in the movable gantry frame 10 along a first direction. The sliding frame 31 has a horizontally penetrating long through groove. The slider 32 is slidably mounted in the long through groove along a second direction. An adjusting wheel 321 is rotatably connected to the slider 32, with its rotation axis set along the first direction. The adjusting wheel 321 extends out of the long through groove. The lead screw 33 is rotatably mounted inside the sliding frame 31, with its rotation axis set along the second direction. The lead screw 33 is helically connected to the slider 32 and is used to drive the slider 32 to slide when the lead screw 33 rotates.

[0042] The coordinated design of the sliding frame 31, slider 32, and lead screw 33 in the adjusting mechanism 30 enables flexible movement of the adjusting position in two directions. The rotation of the lead screw 33 drives the slider 32 to slide along the second direction within the long through groove, which in turn moves the adjusting wheel 321, allowing for precise adjustment of the steel cable position and more accurate alignment of the precast components. Simultaneously, the sliding frame 31 slides along the auxiliary slide rail in the first direction, allowing the adjusting mechanism 30 to move synchronously with the mobile winch mechanism 20, ensuring timely and effective adjustment.

[0043] This structure uses a helical drive and sliding fit, which has high transmission accuracy and is easy to operate. It can meet the straightening requirements of precast components of different sizes and tilt states, and improves the adaptability and adjustment accuracy of the adjustment mechanism 30.

[0044] The sliding frame 31 includes a sliding plate 311 and an adjusting frame 312. The sliding plate 311 is slidably disposed on the movable frame along a first direction, and the adjusting frame 312 is disposed on the sliding plate 311 along a second direction. It can be understood that the adjusting frame 312 is provided with a long through groove that runs through the adjusting frame 312 along the first direction. The long through groove is an adjusting slide rail.

[0045] In some embodiments, the adjustment mechanism 30 may employ, for example... Figure 1 The structure shown. See also Figure 1 The adjustment mechanism 30 also includes auxiliary rods 34, one end of each auxiliary rod 34 is connected to the movable winch mechanism 20, and the other end is respectively connected to the two ends of the sliding frame 31 along the second direction.

[0046] The auxiliary rod 34 enhances the connection strength and stability between the adjusting mechanism 30 and the moving winch mechanism 20. When the adjusting mechanism 30 adjusts the steel cable, it effectively prevents structural swaying or loosening caused by uneven force, ensuring the smoothness of the adjustment process and further improving the safety and reliability of the precast component straightening operation. By adding the auxiliary rod 34, the stability of the entire gantry structure is significantly improved without adding excessive cost or structural complexity.

[0047] In some embodiments, the adjustment mechanism 30 may employ, for example... Figure 1 , Figure 3 The structure shown. See also Figure 1 , Figure 3 The adjusting mechanism 30 also includes an L-shaped support block 35 and a rotating handle 36. One end of the long side of the L-shaped support block 35 is fixed to the sliding frame 31, and the other end of the long side of the L-shaped support block 35 extends outward along a second direction. One end of the short side of the L-shaped support block 35 is integrally connected to the extended end of the long side of the L-shaped support block 35, and the other end of the short side of the L-shaped support block 35 extends downward in a vertical direction. A through hole is provided on the short side of the L-shaped support block 35 for the lead screw 33 to pass through. The rotating handle 36 is fixed to the extended end of the lead screw 33.

[0048] The L-shaped support block 35 provides stable support for the lead screw 33, ensuring its stability during rotation and preventing wobbling or deviation, thus ensuring that the slider 32 can slide accurately along the second direction. The rotating handle 36 allows operators to easily and manually rotate the lead screw 33 to adjust the position. The operation is simple and intuitive, requiring no complex equipment or tools, thus reducing operational difficulty. The design of the L-shaped support block 35 and the rotating handle 36 optimizes the operation and structural stability of the adjustment mechanism 30, improving the convenience and accuracy of adjustment, making it suitable for use in environments such as construction sites.

[0049] In some embodiments, the sliding frame 31 may be adopted as follows: Figure 1 , Figure 3 The structure shown. See also Figure 1 , Figure 3 The sliding frame 31 has sliding blocks at both ends, and each sliding block is slidably mounted on the auxiliary slide rail on the movable gantry frame 10 along the second direction.

[0050] The sliding blocks at both ends of the sliding frame 31 slide along the auxiliary slide rail in the second direction, increasing the contact points and support area between the sliding frame 31 and the moving gantry frame 10. This makes the sliding frame 31 more stable during movement, reducing swaying and offset, and improving the overall stability of the adjustment mechanism 30. This, in turn, ensures the accuracy and reliability of the precast component straightening operation. By increasing the cooperation between the sliding blocks and the auxiliary slide rail, the stability of the adjustment mechanism 30 is improved without affecting its original adjustment function and flexibility.

[0051] In some embodiments, the aforementioned mobile hoisting mechanism 20 may employ, for example... Figure 1 , Figure 4 The structure shown. See also Figure 1 , Figure 4The mobile hoisting mechanism 20 includes a sliding frame 21, pulleys 22, a driver 23, and a winch 24. The sliding frame 21 is slidably mounted on a fixed slide rail 11 along a first direction. Multiple pulleys 22 are provided, each rotatably connected to the sliding frame 21 and disposed within the fixed slide rail 11. The driver 23 is fixed to the sliding frame 21 and is poweredly connected to one of the pulleys 22. The winch 24 is fixed to the bottom of the sliding frame 21, and its extended end has a hook for connecting prefabricated components; the hook serves as a lifting connection point.

[0052] The sliding frame 21 of the mobile winch mechanism 20 is slidably connected to the fixed slide rail 11. Combined with the rotation of the pulley 22 within the fixed slide rail 11, this allows the mobile winch mechanism 20 to move smoothly along a first direction, facilitating the hoisting of precast components at different positions. The driver 23 is powered by the pulley 22, driving its rotation and thus moving the sliding frame 21, achieving automated control of the mobile winch mechanism 20. The winch 24 and hook provide a reliable lifting connection for the precast components, facilitating their hoisting and dismantling. The mobile winch mechanism 20 features a reasonable structural design, smooth transmission, and a high degree of automation, improving the efficiency and accuracy of precast component hoisting while reducing the labor intensity of operators.

[0053] In some embodiments, the driver 23 described above may employ, for example... Figure 1 , Figure 4 The structure shown. See also Figure 1 , Figure 4 The driver 23 is a stepper motor.

[0054] Using a stepper motor as the driver 23 enables precise speed and position control, making the mobile winch mechanism 20 more accurate during movement and allowing precast components to be accurately hoisted to designated positions according to construction needs. Stepper motors are characterized by fast response and high control precision, effectively improving the efficiency and quality of precast component hoisting while reducing safety hazards caused by inaccurate positioning. The application of stepper motors enhances the control performance of the mobile winch mechanism 20, making the gantry crane more intelligent and precise in the precast component hoisting process, meeting the high precision and efficiency requirements of modern construction.

[0055] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A movable gantry crane, characterized in that, include: The movable gantry frame has a horizontally fixed slide rail at the top and multiple wheels at the bottom. A mobile winch mechanism is slidably connected to the fixed slide rail. The mobile winch mechanism has a downwardly extending steel cable, the end of which is connected to a lifting connection position for lifting precast components. An adjustment mechanism is slidably disposed on the movable gantry frame and located below the fixed slide rail; the adjustment mechanism has a lifting adjustment position through which the steel cable passes and which can move along a horizontal direction perpendicular to the fixed slide rail; the adjustment mechanism is used to adjust the steel cable in the adjustment position to straighten the component connected to the lifting connection position.

2. The movable gantry as described in claim 1, characterized in that, The extension direction of the fixed slide rail is defined as the first direction, and the direction that is perpendicular to and horizontal to the first direction is defined as the second direction. The adjustment mechanism includes: A sliding frame is slidably mounted on an auxiliary slide rail in the movable gantry frame along the first direction; the sliding frame has a horizontally penetrating long through groove. A slider is slidably disposed in the long through groove along the second direction. An adjusting wheel is rotatably connected to the slider, the axis of rotation is disposed along the first direction, and the adjusting wheel extends out of the long through groove. A lead screw is rotatably disposed within the sliding frame, with its rotation axis set along the second direction. The lead screw is helically connected to the slider and is used to drive the slider to slide when the lead screw rotates.

3. The movable gantry as described in claim 2, characterized in that, The adjustment mechanism also includes auxiliary rods, one end of each auxiliary rod being connected to the movable winch mechanism, and the other end being connected to the two ends of the sliding frame along the second direction.

4. The movable gantry as described in claim 2, characterized in that, The adjustment mechanism further includes an L-shaped support block and a rotating handle; one end of the long side of the L-shaped support block is fixed to the sliding frame, the other end of the long side of the L-shaped support block extends outward along the second direction, one end of the short side of the L-shaped support block is integrally connected to the extended end of the long side of the L-shaped support block, the other end of the short side of the L-shaped support block extends downward along the vertical direction, and the short side of the L-shaped support block is provided with a through hole for the lead screw to pass through; the rotating handle is fixed to the extended end of the lead screw.

5. The movable gantry as described in claim 2, characterized in that, The sliding frame is provided with sliding blocks at both ends, and each sliding block is slidably disposed on the auxiliary slide rail on the movable gantry frame along the second direction.

6. The movable gantry as described in claim 2, characterized in that, The mobile hoisting mechanism includes: A sliding frame is slidably mounted on the fixed slide rail along the first direction; The system includes multiple pulleys, each of which is rotatably connected to the sliding frame and is disposed within the fixed slide rail. A drive unit is fixed to the sliding frame and is poweredly connected to one of the pulleys; A winch is fixed at the bottom of the sliding frame, and the extended end of the winch is provided with a hook for connecting prefabricated components. The hook is the lifting connection position.

7. The movable gantry as described in claim 6, characterized in that, The driver is a stepper motor.

Images