Distance-adjustable gantry sling

Abstract

The utility model discloses a distance-adjustable gantry sling which comprises a portal frame and a distance adjusting mechanism, a crane is arranged at the upper end of the portal frame; a lifting hook is mounted at the lower end of the crane; the distance adjusting mechanism comprises a shell, sliding blocks, sliding columns, mounting frames, limiting plates, transverse plates and limiting inserting grooves, the shell is arranged at the lower end of the crane, the lower end of the shell is of an opening structure, the sliding blocks are transversely and slidably connected into the shell, the sliding columns are vertically and slidably connected into sliding holes in the middles of the sliding blocks, the mounting frames are arranged at the lower ends of the sliding columns, and the limiting plates are arranged in the mounting frames. According to the distance-adjustable gantry lifting appliance, in the lifting process of the gantry lifting appliance, movement of the distance-adjusting component is automatically limited, acting force borne by the distance-adjusting component is shared, the situation that pressure borne by the distance-adjusting component is too large in the lifting process is avoided, abrasion to the distance-adjusting component of the gantry lifting appliance is reduced, the service life of the distance-adjusting component is prolonged, and the service life of the distance-adjusting component is prolonged. And the service life of the gantry sling is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry hangers, in particular to a gantry hanger with adjustable distance. Background Art

[0002] Gantry crane is a heavy lifting equipment, usually used for material handling in large industrial projects and construction sites. It has a large lifting capacity and a wide range of applications. It can be used to lift heavy objects, building materials, etc. The design of the gantry crane usually includes one or more lifting arms, which can be moved in the horizontal direction by moving the crossbeam. At the same time, the entire structure can move freely in the working area, thereby providing a larger working range. This equipment plays an important role in the fields of construction, bridge construction, shipbuilding, etc.; In the prior art, the hook spacing of some gantry cranes can be adjusted, and the slider is driven to slide in the slide groove through the screw drive. After the adjustment is completed, the position of the slider is limited by the self-locking characteristics of the screw drive to adjust the spacing of the hooks. However, during the lifting process, the weight of the lifted object is easily acted on the distance adjusting component, resulting in greater force and wear on the distance adjusting component, which affects the service life of the gantry crane. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an adjustable gantry hoist, which automatically limits the movement of the distance adjusting components during the lifting process of the gantry hoist, shares the force exerted on the distance adjusting components, avoids excessive pressure on the distance adjusting components during the lifting process, reduces the wear of the distance adjusting components of the gantry hoist, and increases the service life of the gantry hoist, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gantry hanger with adjustable distance, comprising a gantry frame and a distance adjustment mechanism;

[0005] Gantry: A crane is installed at the upper end, and a hook is installed at the lower end of the crane;

[0006] Distance adjusting mechanism: it includes a shell, a slider, a sliding column, a mounting frame, a limit plate, a cross plate and a limit slot. The shell is arranged at the lower end of the crane, and the lower end of the shell is an open structure. The inside of the shell is laterally slidably connected with sliders, and the sliding holes in the middle of the sliders are vertically slidably connected with sliding columns. The lower ends of the sliding columns are provided with mounting frames, and the insides of the mounting frames are provided with hooks. The upper ends of the sliding columns are provided with limit plates, and the cross plates are respectively arranged between the left and right inner walls of the shell. The surfaces of the cross plates are respectively provided with limit slots, and the limit slots are installed in conjunction with the limit plugs at the lower ends of the limit plates, which automatically limit the movement of the distance adjusting components during the lifting process of the gantry hoist, share the force on the distance adjusting components, avoid excessive pressure on the distance adjusting components during the lifting process, reduce the wear of the distance adjusting components of the gantry hoist, and improve the service life of the gantry hoist.

[0007] Furthermore, the distance adjustment mechanism also includes a spring, and the springs are movably mounted on the outer arc surface of the sliding column, and the upper ends of the springs are fixedly connected to the limit plates, so as to facilitate the removal of the limit on the distance adjustment component.

[0008] Furthermore, a single-chip microcomputer is provided at the front end of the crane, the input end of the single-chip microcomputer is electrically connected to an external power supply, and the input end of the crane is electrically connected to the output end of the single-chip microcomputer to control the start and stop of the entire device.

[0009] Furthermore, screws are rotatably connected between the left and right inner walls of the shell, and the screws are threadedly connected to the screw holes on the surface of the slider. Motors are provided on the sides of the shell, and the ends of the output shafts of the motors are fixedly connected to the screws. The input end of the motor is electrically connected to the output end of the single-chip microcomputer to provide power for the movement of the slider.

[0010] Furthermore, the threads at the left and right ends of the screw rod have opposite directions, so that the movement directions of the two sliders are opposite.

[0011] Furthermore, wheels are installed at the lower ends of the gantry to facilitate the movement of the entire device.

[0012] Furthermore, the limiting slots are horizontally evenly spaced on the surface of the transverse plate, so that the spacing adjustment of the hooks is more accurate.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the adjustable gantry hanger has the following advantages:

[0014] During the lifting process, the weight of the lifting object affects the elastic force of the spring, so that the limit block at the lower end of the limit plate is plugged into the limit slot, which automatically limits the movement of the distance adjusting component during the lifting process of the gantry crane, shares the force on the distance adjusting component, avoids excessive pressure on the distance adjusting component during the lifting process, reduces the wear on the distance adjusting component of the gantry crane, and increases the service life of the gantry crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the side section of the distance adjustment mechanism of the utility model;

[0017] Figure 3 This is an enlarged structural diagram of the utility model at A;

[0018] Figure 4 It is a structural schematic diagram of the front view section of the distance adjustment mechanism of the utility model.

[0019] In the figure: 1 gantry, 2 crane, 3 distance adjustment mechanism, 31 housing, 32 slider, 33 slide column, 34 mounting frame, 35 limit plate, 36 cross plate, 37 limit slot, 38 spring, 4 hook, 5 screw, 6 motor, 7 wheel, 8 single chip microcomputer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 ,This embodiment provides a technical solution: a gantry hanger with adjustable distance, comprising a gantry 1 and a distance adjustment mechanism 3;

[0022] Gantry 1: A crane 2 is provided at its upper end to lift and transport objects. A hook 4 is installed at the lower end of the crane 2 to facilitate the connection between the crane 2 and the object. A single-chip microcomputer 8 is provided at the front end of the crane 2. The input end of the single-chip microcomputer 8 is electrically connected to an external power supply. The input end of the crane 2 is electrically connected to the output end of the single-chip microcomputer 8 to control the start and stop of the entire device. Wheels 7 are installed at the lower end of the gantry 1 to facilitate the movement of the position of the gantry 1.

[0023] The distance adjustment mechanism 3 includes a housing 31, a slider 32, a slide post 33, a mounting frame 34, a limit plate 35, a cross plate 36 and a limit slot 37. The housing 31 is arranged at the lower end of the crane 2. The lower end of the housing 31 is an open structure. The inside of the housing 31 is respectively connected with the slider 32 in a horizontal sliding manner. The sliding holes in the middle of the slider 32 are respectively connected with the slide post 33 in a vertical sliding manner. The lower end of the slide post 33 is provided with a mounting frame 34. The inside of the mounting frame 34 is provided with a hook 4. The upper end of the slide post 33 is provided with a limit plate 35. The cross plate 36 is respectively connected with the slide post 33 in a horizontal sliding manner. The surface of the horizontal plate 36 is respectively provided with a limit slot 37, and the limit slot 37 is installed with the limit plug at the lower end of the limit plate 35. The distance adjustment mechanism 3 also includes a spring 38, which is movably sleeved on the outer arc surface of the slide column 33, and the upper end of the spring 38 is fixedly connected to the limit plate 35. The left and right inner walls of the housing 31 are respectively rotatably connected with a screw rod 5, and the screw rod 5 is threadedly connected with the screw hole on the surface of the slider 32. The side of the housing 31 is respectively provided with a motor 6, and the output of the motor 6 The ends of the shafts are fixedly connected to the screw rods 5 respectively, the input end of the motor 6 is electrically connected to the output end of the single chip computer 8, the threads of the left and right ends of the screw rod 5 are in opposite directions, the limit slots 37 are horizontally evenly spaced and distributed on the surface of the cross plate 36, and the spacing between the two sliders 32 is determined by the different insertion positions of the limit plugs, so that the spacing between the two hooks 4 is more accurate, the motor 6 is started, and the output shaft of the motor 6 drives the screw rod 5 to rotate, and the slider 32 is driven to move left and right under the limit of the housing 31 through the threaded connection between the screw rod 5 and the slider 32. Move right, and at the same time, the thread directions of the left and right ends of the screw rod 5 are opposite, so the moving directions of the two sliders 32 are opposite, and the spacing between the two hooks 4 is adjusted. After the adjustment is completed, the object is connected to the hook 4, and the crane 2 is started to lift the object. During the lifting process, affected by the weight of the object, the elastic force of the spring 38 is overcome, driving the slide column 33 and the slider 32 to slide relative to each other, so that the limiting block at the lower end of the limiting plate 35 is plugged into the limiting slot 37, limiting the movement of the slider 32, and avoiding excessive pressure on the adjusting components during the lifting process.

[0024] The working principle of an adjustable-distance gantry hoist provided by the utility model is as follows: when the gantry hoist is in use, the motor 6 is started by the single-chip microcomputer 8 according to the size of the hoisted object, and the output shaft of the motor 6 drives the screw rod 5 to rotate, and the screw rod 5 is threadedly connected to the slider 32, and the slider 32 is driven to move left and right under the limit of the shell 31. At the same time, the threads at the left and right ends of the screw rod 5 are in opposite directions, so the movement directions of the two sliders 32 are opposite, and the spacing between the two hooks 4 is adjusted. After the adjustment is completed, the object is connected to the hook 4, and the crane 2 is started to lift the object. During the lifting process, affected by the weight of the object, the elastic force of the spring 38 is overcome, and the sliding column 33 and the slider 32 are driven to slide relative to each other, so that the limit plug at the lower end of the limit plate 35 is plugged into the limit slot 37, and the movement of the slider 32 is automatically limited, so as to avoid excessive pressure on the adjustment component during the lifting process.

[0025] It is worth noting that the single-chip microcomputer 8 disclosed in the above embodiment can use the AT89C4051 model single-chip microcomputer, and the motor 6 and the crane 2 can be freely configured according to the actual application scenario. The motor 6 can use the 42BYHJ01 model stepper reduction motor, and the crane 2 can use the LDA type 1-20t model crane. The single-chip microcomputer 8 controls the operation of the motor 6 and the crane 2 using methods commonly used in the prior art.

[0026] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An adjustable gantry hanger, characterized in that: It comprises a gantry (1) and a distance adjustment mechanism (3); A gantry (1) having a crane (2) at its upper end and a hook (4) at the lower end of the crane (2); The distance adjustment mechanism (3) comprises a shell (31), a slider (32), a slide post (33), a mounting frame (34), a limit plate (35), a transverse plate (36) and a limit slot (37). The shell (31) is arranged at the lower end of the crane (2). The lower end of the shell (31) is an open structure. The inside of the shell (31) is respectively connected with the slider (32) in a transverse sliding manner. The sliding hole in the middle of the slider (32) is respectively connected with the slide post (33) in a vertical sliding manner. The lower end of the slide post (33) is provided with a mounting frame (34). The inside of the mounting frame (34) is provided with a hook (4). The upper end of the slide post (33) is provided with a limit plate (35). The transverse plate (36) is respectively arranged between the left and right inner walls of the shell (31). The surface of the transverse plate (36) is respectively provided with a limit slot (37). The limit slot (37) is installed in cooperation with the limit plug at the lower end of the limit plate (35).

2. The adjustable gantry hanger according to claim 1, characterized in that: The distance adjustment mechanism (3) further comprises a spring (38), wherein the spring (38) is movably sleeved on the outer arc surface of the sliding column (33), and the upper end of the spring (38) is fixedly connected to the limit plate (35).

3. The adjustable gantry hanger according to claim 1, characterized in that: A single-chip microcomputer (8) is provided at the front end of the crane (2); the input end of the single-chip microcomputer (8) is electrically connected to an external power supply, and the input end of the crane (2) is electrically connected to the output end of the single-chip microcomputer (8).

4. The adjustable gantry hanger according to claim 3, characterized in that: A screw rod (5) is rotatably connected between the left and right inner walls of the housing (31), and the screw rod (5) is threadedly connected to a screw hole on the surface of the slider (32). A motor (6) is provided on the side of the housing (31), and the output shaft end of the motor (6) is fixedly connected to the screw rod (5), and the input end of the motor (6) is electrically connected to the output end of the single chip computer (8).

5. The adjustable gantry hanger according to claim 4, characterized in that: The screw threads at the left and right ends of the screw rod (5) are in opposite directions.

6. The adjustable gantry hanger according to claim 1, characterized in that: Wheels (7) are respectively installed at the lower ends of the gantry (1).

7. The adjustable gantry hanger according to claim 1, characterized in that: The limiting slots (37) are distributed laterally at equal intervals on the surface of the transverse plate (36).

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