Small gantry with adjustable anti-tilt center of gravity

Abstract

The utility model discloses a small -size gantry with adjustable structure of anti -tilt gravity center, including I -beam, support board is symmetrically distributed with the lower surface both ends welding of I -beam, and bottom plate fixed connection is between two support board bottom -end, support board sets up at least two groups of crosspieces from top to bottom, and two groups crosspieces are provided with the load block of with support board inboard sliding joint between, the utility model discloses adopt screw rod, load block etc.

Description

Technical Field

[0001] This utility model belongs to the field of gantry frame technology, specifically relating to a small gantry frame with an adjustable anti-tilting center of gravity structure. Background Technology

[0002] Gantry cranes are a new type of small lifting gantry crane developed to meet the daily production needs of small and medium-sized factories (companies) for handling equipment, loading and unloading goods in and out of warehouses, lifting and repairing heavy equipment, and transporting materials. They are suitable for mold manufacturing, auto repair shops, mines, civil construction sites, and other occasions requiring lifting. They are commonly used in construction for material transportation and for transporting construction workers up and down, realizing the mechanization of lifting, reducing manpower, lowering production and operating costs, and improving work efficiency.

[0003] However, during the hoisting of automotive parts, some parts are quite heavy, and the overall center of gravity of the gantry frame is prone to shift during the hoisting process, which may cause it to tip over and pose a certain safety hazard.

[0004] Chinese patent document with application number CN202223008188.3 discloses a gantry frame, including an I-beam, a support plate, a base plate, a slider, a cleaning mechanism, and a stabilizing mechanism. Two symmetrically distributed support plates are fixedly welded to both ends of the lower surface of the I-beam, and a base plate is fixedly connected between the bottom ends of the two support plates.

[0005] Further research by the applicant revealed that the support plate in this technical solution is triangular, such as... Figure 1 As shown, when the load block is adjusted up and down, a variable gap will appear between the load block and the inner side of the support plate, causing the load block to shake or even detach, which will affect the stability and center of gravity adjustment of the gantry frame. Utility Model Content

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A small gantry crane with an adjustable anti-tilting center of gravity structure includes: I-beams; Support plates are symmetrically distributed and welded to both ends of the lower surface of the I-beam; The base plate is fixedly connected between the bottom ends of the two support plates; The support plate has at least two sets of horizontal plates from top to bottom, and a load-bearing block that is slidably connected to the inner side of the support plate is provided between the two sets of horizontal plates. A threaded rod passing through the load-bearing block is connected to the horizontal plate; and A drive mechanism for forcing the threaded rod to rotate so that the load block slides up and down relative to the support plate.

[0007] Furthermore, the support plate is bent, and the support plate includes a vertically arranged upper support plate and a lower support plate arranged at a certain angle to the upper support plate, and the load block moves within the length range of the upper support plate.

[0008] Furthermore, the support plate has at least one set of grooves extending along its length on its side.

[0009] Furthermore, a limiting block that cooperates with the slide groove is provided on the side of the load block.

[0010] Furthermore, the limiting block has an I-shaped cross-section and is embedded in the groove.

[0011] Furthermore, the drive mechanism includes a drive gear, a driven gear, and a crank handle. The driven gear is fixedly connected to the outer side of the bottom end of the threaded rod, and the drive gear is rotatably connected to the upper surface of the base plate via a rotating shaft. The drive gear and the driven gear mesh with each other, and the crank handle is fixedly connected to the upper surface of the drive gear.

[0012] Furthermore, a slider is slidably connected to the outer side of the bottom end of the I-beam, and a cable is rotatably connected to the bottom end of the slider.

[0013] Compared with the prior art, this utility model has the following advantages: By using structures such as threaded rods and load-bearing blocks, the overall center of gravity of the gantry frame can be adjusted, which helps to improve the overall stability. During adjustment, the threaded rod is rotated by the drive mechanism, which in turn causes the load-bearing block to move in the vertical direction, thereby changing the center of gravity, improving the stability of the device, and reducing the possibility of the device tipping over. The bent support plate allows the load block to fit tightly with the inner wall of the vertically set upper support plate during the up-and-down adjustment process. This avoids the different gap sizes between the support plate and the inner wall of the support plate as the position of the load block changes, as is the case with the support plate in the existing technology. This makes the movement of the load block smoother and ensures the overall stability of the gantry frame. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an existing gantry crane. Figure 2 This is a schematic diagram of the left-side structure of a specific embodiment of the present utility model; Figure 3 This is a cross-sectional view of the support plate and load-bearing block in a specific embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the three-dimensional structure of the support plate in a specific embodiment of this utility model; The reference numerals in the accompanying drawings include: 1. I-beam, 10. slider, 11. cable, 2. support plate, 20. upper support plate, 21. lower support plate, 22. slide groove, 3. base plate, 4. cross plate, 5. load block, 50. limit block, 6. threaded rod, 70. drive gear, 71. driven gear, 72. crank handle. Detailed Implementation

[0015] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] The accompanying drawings are for illustrative purposes only and represent schematic diagrams, not actual physical objects. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals in the drawings of the embodiments of this utility model correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" appear, indicating the orientation or positional relationship based on the orientation or positional relationship shown in the 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, the terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0017] like Figure 1 - Figure 4 As shown, a small gantry frame with an adjustable anti-tilting center of gravity structure according to this utility model includes an I-beam 1, a support plate 2, a base plate 3, and a drive mechanism. Among them, the support plates 2 are symmetrically distributed and welded to both ends of the lower surface of the I-beam 1; The base plate 3 is fixedly connected between the bottom ends of the two support plates 2; The support plate 2 is provided with at least two sets of horizontal plates 4 from top to bottom, and a load block 5 is provided between the two sets of horizontal plates 4 and is slidably connected to the inner side of the support plate 2. A threaded rod 6 that passes through the load block 5 is connected to the horizontal plate 4; The drive mechanism is used to force the threaded rod 6 to rotate so that the load block 5 slides up and down relative to the support plate 2.

[0018] The use of threaded rod 6 and load block 5 allows for adjustment of the overall center of gravity of the gantry frame, which helps improve overall stability. During adjustment, the threaded rod 6 is rotated by the drive mechanism, which in turn causes the load block 5 to move in the vertical direction, thereby changing the center of gravity, improving the stability of the device, and reducing the possibility of the device tipping over.

[0019] The bent support plate 2 allows the load block 5 to fit tightly with the inner wall of the vertically set upper support plate 20 during the up-and-down adjustment process. This avoids the different gap sizes between the support plate 2 and the inner wall of the support plate 2 as the position of the load block 5 changes, as is the case with the support plate 2 in the prior art. This makes the movement of the load block 5 smoother and ensures the overall stability of the gantry frame.

[0020] Specifically, in this embodiment, the support plate 2 is bent and includes a vertically arranged upper support plate 20 and a lower support plate 21 arranged at a certain angle to the upper support plate 20. The load block 5 moves within the length range of the upper support plate 20.

[0021] like Figure 3 , Figure 4 As shown, the support plate 2 has at least one set of grooves 22 extending along the length direction on its side.

[0022] The side of the load block 5 is provided with a limiting block 50 that cooperates with the slide groove 22.

[0023] The limiting block 50 has an I-shaped cross section and is embedded in the sliding groove 22.

[0024] By adopting the above connection method, the load block 5 can be closely attached to the inner wall of the upper support plate 20 as it moves relative to the support plate 2. The I-shaped setting of the limiting block 50 cooperates with the slide groove 22 to guide and limit the movement, making the movement of the load block 5 smoother.

[0025] The drive mechanism includes a driving gear 70, a driven gear 71, and a crank handle 72. The driven gear 71 is fixedly connected to the outer side of the bottom end of the threaded rod 6. The driving gear 70 is rotatably connected to the upper surface of the base plate 3 via a rotating shaft. The driving gear 70 and the driven gear 71 mesh with each other, and the crank handle 72 is fixedly connected to the upper surface of the driving gear 70. The crank handle 72 and the driving / driven gear 71 can adopt an anti-reverse limiting mechanism (not shown in the figure) to prevent the threaded rod 6 from reversing after the external force is removed. The anti-reverse limiting mechanism can be a ratchet or other similar structure.

[0026] Rotating the crank handle 72 drives the drive gear 70 to rotate, and the drive gear 70 drives the threaded rod 6 to rotate through the driven gear 71.

[0027] The drive mechanism in this embodiment is existing technology. The specific structure and connection form can be referred to the technical solutions mentioned in the background technology or related technical documents. Other mechanical structures, such as telescopic cylinders, can also be used as substitutes. The above structures are not within the protection scope of this application.

[0028] A slider 10 is slidably connected to the outer side of the bottom end of the I-beam 1, and a cable 11 is rotatably connected to the bottom end of the slider 10.

[0029] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A small gantry crane with an adjustable anti-tilting center of gravity structure, characterized in that, include: I-beam (1); Support plates (2) are symmetrically distributed and welded to both ends of the lower surface of the I-beam (1); The base plate (3) is fixedly connected between the bottom ends of the two support plates (2); The support plate (2) has at least two sets of horizontal plates (4) from top to bottom, and a load block (5) is provided between the two sets of horizontal plates (4) and is slidably connected to the inner side of the support plate (2). A threaded rod (6) is connected to the horizontal plate (4) and passes through the load block (5); and A drive mechanism for forcing the threaded rod (6) to rotate so that the load block (5) slides up and down relative to the support plate (2); The support plate (2) is bent and includes a vertically arranged upper support plate (20) and a lower support plate (21) arranged at a certain angle to the upper support plate (20). The load block (5) moves within the length range of the upper support plate (20). The support plate (2) has at least one set of grooves (22) extending along the length direction on its side. The side of the load block (5) is provided with a limiting block (50) that cooperates with the slide (22).

2. A small gantry crane with an adjustable anti-tilting center of gravity structure as described in claim 1, characterized in that: The limiting block (50) has an I-shaped cross section.

3. A small gantry crane with an adjustable anti-tilting center of gravity structure as described in claim 1 or 2, characterized in that: The limiting block (50) is embedded in the groove (22).

4. A small gantry crane with an adjustable anti-tilting center of gravity structure as described in claim 1, characterized in that: The drive mechanism includes a drive gear (70), a driven gear (71), and a crank handle (72).

5. A small gantry crane with an adjustable anti-tilting center of gravity structure as described in claim 4, characterized in that: The driven gear (71) is connected to the outer side of the bottom end of the threaded rod (6), the driving gear (70) is rotatably connected to the upper surface of the base plate (3) through a rotating shaft, and the crank handle (72) is connected to the upper surface of the driving gear (70).

6. A small gantry crane with an adjustable anti-tilting center of gravity structure as described in claim 1, characterized in that: The bottom outer side of the I-beam (1) is slidably connected to a slider (10).

7. A small gantry crane with an adjustable anti-tilting center of gravity structure as described in claim 6, characterized in that: The bottom end of the slider (10) is rotatably connected to a cable (11).

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