Double-beam double-suspension point bridge crane

Abstract

The utility model provides a kind of double-beam double-lifting-point bridge crane, including bridge, the trolley travelling mechanism being arranged at the lower side of bridge, the trolley rail being arranged at the upper side of bridge, the hoist trolley being arranged on trolley rail, the winch being arranged on hoist trolley and the hoisting spreader being connected with winch;Hoisting spreader includes central support, telescopic support being arranged at the both sides of central support and the hoisting hook being arranged at telescopic support telescopic end, and telescopic support is hinged with central support;The upper side of central support is provided with several groups of movable pulley, and movable pulley is connected with winch by steel wire rope.The double-beam double-lifting-point bridge crane design science, easy to operate, can fully guarantee the stability of lifting.

Description

Technical Field

[0001] This utility model relates to a lifting device, specifically, to a double-beam double-lifting-point bridge crane. Background Technology

[0002] Bridge cranes are lifting equipment that spans across workshops, warehouses, and material yards for material handling. Because their ends rest on tall concrete pillars or metal supports, they resemble bridges. The bridge frame of a bridge crane runs longitudinally along tracks laid on elevated structures on both sides, making full use of the space beneath the bridge frame for material handling without being obstructed by ground equipment. It is the most widely used and numerous type of lifting machinery. Currently, there are many bridge cranes on the market. To improve the stability of the lifting process, some bridge cranes adopt double-beam, double-lifting-point lifting, such as the double-lifting-point, double-main-beam bridge crane disclosed in Chinese Patent CN221680618U, the double-lifting-point, double-main-beam bridge crane disclosed in Chinese Patent CN218560900U, and the double-lifting-point, externally suspended bridge crane disclosed in Chinese Patent CN204508613U. However, in these double-beam, double-lifting-point cranes, the two lifting points are located on two separate lifting trolleys, and there is no connecting structure between the two lifting points or the lifting trolleys, resulting in relatively poor equipment stability.

[0003] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a double-beam, double-lifting-point bridge crane.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A double-girder double-lifting-point bridge crane includes a bridge frame, a trolley traveling mechanism located on the lower side of the bridge frame, a trolley track located on the upper side of the bridge frame, a lifting trolley located on the trolley track, a winch located on the lifting trolley, and a lifting device connected to the winch. The lifting device includes a central support, telescopic supports located on both sides of the central support, and a lifting hook located at the telescopic end of the telescopic supports. The telescopic supports are hinged to the central support. Several sets of movable pulleys are provided on the upper side of the central support, and the movable pulleys are connected to the winch via wire ropes.

[0006] The telescopic support includes a telescopic link, with adjusting links hinged to both ends of the telescopic link; a first hinge seat is provided at both ends of the telescopic link, and a second hinge seat is provided at both ends of the adjusting link; the central support is a rectangular base, with a first hinge seat also provided at each of the four right angles of the rectangular base; the second hinge seat at one end of the adjusting link is hinged to the first hinge seat of the telescopic link, and the second hinge seat at the other end of the adjusting link is hinged to the first hinge seat of the rectangular base.

[0007] Hydraulic telescopic rods are installed on both sides of the central support, and a hydraulic pump station for driving the hydraulic telescopic rods is installed on the upper side of the central support; the telescopic end of the hydraulic telescopic rod is connected to the middle of the telescopic connecting rod.

[0008] The telescopic linkage includes two sets of sliding rods that slide together with the middle sleeve. The two sets of sliding rods are located on both sides of the middle sleeve, and the outer ends of the sliding rods are respectively provided with first hinge seats.

[0009] The middle sleeve has two sets of longitudinal tracks inside, and the inner end of the sliding rod is equipped with a slider, which extends into the middle sleeve and slides in cooperation with the longitudinal tracks.

[0010] A connecting seat is provided on the lower side of the middle sleeve. The lifting hook includes a bent hook. A connecting column extends upward from the upper side of the bent hook. The upper side of the connecting column is rotatably connected to the connecting seat.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a double-beam double-lifting-point bridge crane with a scientific design and simple operation, which can fully guarantee the stability of lifting; specifically, the two hooks are connected by a central support and a telescopic bracket, so that the two lifting points are stably connected, which fully guarantees the stability of the lifting and moving process of the two lifting points. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a structural schematic diagram of the lifting device in this utility model.

[0014] In the diagram: 1. Cable tray; 2. Trolley track; 3. Crane trolley; 4. Winch; 5. Trolley traveling mechanism; 6. Center support; 7. Moving pulley; 8. Telescopic linkage; 9. Adjusting linkage; 10. Hydraulic telescopic rod; 11. Hydraulic pump station; 12. Crane hook; 13. Connecting seat. Detailed Implementation

[0015] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. "Installed," "equipped with," and "connected" can employ conventional means in the prior art, such as integral installation, snap-fit ​​installation, welding connection, adhesive connection, bolted connection, etc. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances and select suitable connection, setting, or installation methods from the existing technology.

[0017] like Figure 1-2 As shown, a double-girder double-lifting-point bridge crane includes a bridge frame 1, a trolley traveling mechanism 5 disposed on the lower side of the bridge frame 1, a trolley track 2 disposed on the upper side of the bridge frame 1, a lifting trolley 3 disposed on the trolley track 2, a winch 4 disposed on the lifting trolley 3, and a lifting device connected to the winch 4; specifically, the bridge frame includes two main beams and two end beams, the two main beams and two end beams forming a rectangular bridge frame, the trolley track is located on the upper side of the two main beams, and the trolley traveling mechanism is located on the lower side of the end beams.

[0018] The lifting device includes a central support 6, telescopic supports on both sides of the central support 6, and lifting hooks 12 at the telescopic ends of the telescopic supports. The telescopic supports are hinged to the central support 6. Several sets of movable pulleys 7 are provided on the upper side of the central support 6. The movable pulleys 7 are connected to the winch 4 via wire ropes. To facilitate rope winding, fixed pulleys are correspondingly provided on the lifting trolley. The two hooks are connected by the central support and the telescopic supports, ensuring a stable connection between the two lifting points and guaranteeing the stability of the lifting and moving process of the two lifting points.

[0019] In one embodiment, the telescopic support includes a telescopic link 8, with adjusting links 9 hinged to both ends of the telescopic link 8; each end of the telescopic link 8 is provided with a first hinge seat, and each end of the adjusting link 9 is provided with a second hinge seat; the central support 6 is a rectangular seat, with a first hinge seat also provided at each of the four right angles of the rectangular seat; the second hinge seat at one end of the adjusting link 9 is hinged to the first hinge seat of the telescopic link 8, and the second hinge seat at the other end of the adjusting link 9 is hinged to the first hinge seat of the rectangular seat. Specifically, the first hinge seat is a U-shaped seat with a connecting hole, and the first hinge seat is a connecting sleeve; the second hinge seat extends into the first hinge seat and is rotatably connected via a hinge shaft.

[0020] In one embodiment, hydraulic telescopic rods 10 are respectively provided on both sides of the central support 6, and a hydraulic pump station 11 for driving the hydraulic telescopic rods 10 is provided on the upper side of the central support 6; the telescopic end of the hydraulic telescopic rod 10 is connected to the middle of the telescopic connecting rod 8, and the distance between the two hooks is adjusted by the extension and retraction of the hydraulic telescopic rod. In other embodiments, a bidirectional electric telescopic rod can be used to replace the hydraulic telescopic rod, driven by a motor.

[0021] In one embodiment, the telescopic link 8 includes two sets of sliding rods that slide together with the central sleeve. The two sets of sliding rods are located on both sides of the central sleeve, and the outer ends of the sliding rods are respectively provided with first hinge seats to facilitate the adjustment of the length of the telescopic link.

[0022] In one embodiment, the interior of the central sleeve is provided with two sets of longitudinal rails, and the inner end of the sliding rod is provided with a slider. The slider extends into the interior of the central sleeve and slides in cooperation with the longitudinal rails, which facilitates assembly.

[0023] In one embodiment, a connecting seat 13 is provided on the lower side of the central sleeve. The lifting hook 12 includes a hook, and a connecting post extends upward from the upper side of the hook. The upper side of the connecting post is rotatably connected to the connecting seat 13 for easy assembly. Specifically, the connecting seat is provided with a mounting hole, and the mounting hole and the connecting post can be rotatably connected by a bearing. To improve the stability of the structure, the upper end of the connecting post can also be provided with an external thread and a positioning hole for mounting a lock nut and a positioning pin.

[0024] The above embodiments can be combined with each other.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A double-girder double-lifting-point bridge crane, comprising a bridge frame, a trolley traveling mechanism disposed on the lower side of the bridge frame, a trolley track disposed on the upper side of the bridge frame, a lifting trolley disposed on the trolley track, a winch disposed on the lifting trolley, and a lifting device connected to the winch; characterized in that: The lifting device includes a central support, telescopic supports on both sides of the central support, and lifting hooks on the telescopic ends of the telescopic supports. The telescopic supports are hinged to the central support. Several sets of movable pulleys are provided on the upper side of the central support, and the movable pulleys are connected to the winch by wire ropes.

2. The double-beam, double-lifting-point bridge crane according to claim 1, characterized in that: The telescopic support includes a telescopic link, with adjusting links hinged to both ends of the telescopic link; a first hinge seat is provided at both ends of the telescopic link, and a second hinge seat is provided at both ends of the adjusting link; the central support is a rectangular base, with a first hinge seat also provided at each of the four right angles of the rectangular base; the second hinge seat at one end of the adjusting link is hinged to the first hinge seat of the telescopic link, and the second hinge seat at the other end of the adjusting link is hinged to the first hinge seat of the rectangular base.

3. The double-beam, double-lifting-point bridge crane according to claim 2, characterized in that: Hydraulic telescopic rods are installed on both sides of the central support, and a hydraulic pump station for driving the hydraulic telescopic rods is installed on the upper side of the central support; the telescopic end of the hydraulic telescopic rod is connected to the middle of the telescopic connecting rod.

4. The double-beam, double-lifting-point bridge crane according to claim 3, characterized in that: The telescopic linkage includes two sets of sliding rods that slide together with the middle sleeve. The two sets of sliding rods are located on both sides of the middle sleeve, and the outer ends of the sliding rods are respectively provided with first hinge seats.

5. The double-beam, double-lifting-point bridge crane according to claim 4, characterized in that: The middle sleeve has two sets of longitudinal tracks inside, and the inner end of the sliding rod is equipped with a slider, which extends into the middle sleeve and slides in cooperation with the longitudinal tracks.

6. The double-beam, double-lifting-point bridge crane according to claim 5, characterized in that: A connecting seat is provided on the lower side of the middle sleeve. The lifting hook includes a bent hook. A connecting column extends upward from the upper side of the bent hook. The upper side of the connecting column is rotatably connected to the connecting seat.

Images