Tunneling transport crane

Abstract

The utility model provides a kind of tunnel transport crane, including ground rail, portal set in ground rail and hoist trolley set on portal, hoist trolley is connected with hoist sling by steel wire rope, hoist sling includes two groups of parallelly arranged hoisting girder and two groups of movable beam perpendicular to hoisting girder, the middle portion of two groups of hoisting girder is connected by middle support, the upper side of each hoisting girder is respectively provided with hoisting pulley;Movable beam is slidably connected with hoisting girder;Two groups of symmetrical clamping jaws are respectively provided on each movable beam, and clamping jaw is slidably connected with movable beam;Hydraulic telescopic rod is provided on middle support, and the telescopic end of hydraulic telescopic rod is connected with movable beam, and the middle portion of movable beam is provided with driving motor, the output end of driving motor is connected with transmission screw, the upper side of clamping jaw is correspondingly provided with screw nut, and screw nut is threadedly connected with transmission screw.The tunnel transport crane is simple in structure, reasonable in design, and suitable for hoisting box-shaped heavy objects.

Description

Technical Field

[0001] This utility model relates to a lifting device, specifically a tunnel transport crane. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range; it is also called an overhead crane, gantry crane, or hoist. A gantry crane is a variation of a bridge crane, also known as a portal crane. It features high site utilization, a large operating range, wide adaptability, and strong versatility, and is widely used in freight yards, ports, tunnels, and other locations.

[0003] There are many types of gantry cranes on the market, such as a self-powered monorail crane for tunnels disclosed in Chinese patent CN222699871U, a double-girder gantry crane disclosed in Chinese patent CN120288653A, and a windproof gantry crane and its usage method disclosed in Chinese patent CN120097232A. However, these cranes all use simple hook structures and are not suitable for lifting box-shaped materials.

[0004] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a tunnel transport crane.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A tunnel transport crane includes a ground rail, a gantry mounted on the ground rail, and a lifting trolley mounted on the gantry. The lifting trolley is connected to a lifting device via wire ropes. The lifting device includes two sets of parallel lifting main beams and two sets of movable beams perpendicular to the lifting main beams. The two sets of lifting main beams are connected at their middle sections by a central support. Each lifting main beam has a lifting pulley on its upper side. The movable beams are slidably connected to the lifting main beams. Each movable beam has two sets of symmetrical grippers, which are slidably connected to the movable beams. A hydraulic telescopic rod is mounted on the central support. The telescopic end of the hydraulic telescopic rod is connected to the movable beam. A drive motor is mounted in the middle of the movable beam. The output end of the drive motor is connected to a transmission screw. A screw nut is correspondingly mounted on the upper side of the grippers, and the screw nut is threadedly connected to the transmission screw.

[0007] Both the main beam and the movable beam of the lifting device are rectangular steel, with the movable beam located on the upper side of the main beam.

[0008] Several transverse slides are provided on the front and rear sides of the main beam of the lifting device. The lower side of the movable beam is connected to a first sliding frame. The main beam of the lifting device passes through the first sliding frame and slides with the transverse slides.

[0009] The upper side of the gripper is connected to the second sliding frame, and several longitudinal slides are provided on the four sides of the movable beam. The second sliding frame slides in conjunction with the longitudinal slides.

[0010] The lead screw and lead screw nut are located inside the movable beam. The side wall of the movable beam has a stroke hole. The second sliding frame is connected to the lead screw nut through a transmission rod, which passes through the stroke hole.

[0011] A positioning column is installed on the upper side of the main beam of the lifting device, and a positioning seat is installed on the lower side of the lifting trolley corresponding to the positioning column. The positioning seat has a positioning groove.

[0012] Each main lifting beam is equipped with two sets of lifting pulleys on its upper side, and the lifting trolley is equipped with two sets of lifting drums. The lifting drums and lifting pulleys are connected by steel wire ropes.

[0013] The lower sides of the two sets of lifting main beams are connected by two sets of longitudinal connecting rods.

[0014] Compared to existing technologies, the advantages of this invention are that it provides a tunnel transport crane with a simple structure and reasonable design, suitable for lifting box-shaped heavy objects. In practical use, the positions of the movable beam and grippers can be adjusted via hydraulic telescopic rods and a drive motor to clamp box-shaped heavy objects of corresponding specifications, thus improving the adaptability of the clamps and lifting equipment. Furthermore, the clamps are connected to the movable beam, and the movable beam is connected to the main lifting beam via sliding frames, ensuring the stability of the structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a side view of the structure of this utility model.

[0017] In the diagram: 1. Ground rail; 2. Gantry; 3. Lifting trolley; 4. Gripper; 5. Movable beam; 6. Lifting main beam; 7. Lifting pulley; 8. Lifting drum; 9. Longitudinal connecting rod; 10. Positioning column; 11. Drive motor; 12. Second sliding frame. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0019] 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.

[0020] like Figure 1-2 As shown, a tunnel transport crane includes a ground rail 1, a gantry 2 mounted on the ground rail 1, and a lifting trolley 3 mounted on the gantry 2. The lifting trolley 3 is connected to a lifting device via wire ropes. The lifting device includes two sets of parallel lifting main beams 6 and two sets of movable beams 5 perpendicular to the lifting main beams 6. The middle parts of the two sets of lifting main beams 6 are connected by a central support. Each lifting main beam 6 has a lifting pulley 7 on its upper side. The movable beams 5 are slidably connected to the lifting main beams 6. Each movable beam 5 has two sets of symmetrical grippers 4, which are slidably connected to the movable beams 5. A hydraulic telescopic rod is mounted on the central support. The telescopic end of the hydraulic telescopic rod is connected to the movable beam 5. A drive motor 11 is mounted in the middle of the movable beam 5. The output end of the drive motor 11 is connected to a transmission screw. A screw nut is correspondingly mounted on the upper side of the gripper 4, and the screw nut is threadedly connected to the transmission screw.

[0021] This tunnel transport crane features a simple structure and reasonable design, making it suitable for lifting box-shaped heavy objects. During operation, the positions of the movable beam and grippers can be adjusted via the hydraulic telescopic rod and drive motor to clamp box-shaped heavy objects of corresponding specifications, thus improving the adaptability of the clamps and lifting equipment. Specifically, the grippers are equipped with clamping grooves for box-shaped heavy objects to facilitate clamping.

[0022] In one embodiment, both the main beam of the lifting device and the movable beam 5 are rectangular steel, with the movable beam 5 located on the upper side of the main beam of the lifting device for easy assembly.

[0023] In one embodiment, the front and rear sides of the main beam of the lifting device are respectively provided with a number of transverse slides, and the lower side of the movable beam 5 is respectively connected to a first sliding frame. The main beam of the lifting device passes through the first sliding frame, and the first sliding frame slides in conjunction with the transverse slides.

[0024] In one embodiment, the upper side of the gripper 4 is connected to the second sliding frame 12, and several longitudinal slide rails are respectively provided on the four sides of the movable beam 5. The second sliding frame 12 slides in conjunction with the longitudinal slide rails. Specifically, the clamp and the movable beam, and the movable beam and the lifting main beam are connected by rectangular sliding frames to fully ensure the stability of the structure.

[0025] In one embodiment, the transmission screw and screw nut are located inside the movable beam 5. The side wall of the movable beam 5 is provided with a stroke hole. The second sliding frame 12 is connected to the screw nut through a transmission rod, which passes through the stroke hole for easy assembly.

[0026] In one embodiment, a positioning column 10 is provided on the upper side of the main beam of the lifting device, and a positioning seat is provided on the lower side of the lifting trolley 3 corresponding to the positioning column 10. The positioning seat has a positioning groove, which facilitates the insertion of the positioning column into the positioning groove after the lifting is raised to the upper limit position.

[0027] In one embodiment, two sets of lifting pulleys 7 are respectively installed on the upper side of each lifting main beam 6, and two sets of lifting drums 8 are installed on the lifting trolley 3. The lifting drums 8 and the lifting pulleys 7 are connected by steel wire ropes. Specifically, the two sets of lifting drums are mainly lifted synchronously through electrical control. The electrical components and control circuits all adopt existing technology and have not been improved, so they will not be described in detail.

[0028] In one embodiment, the lower sides of the two sets of lifting main beams 6 are connected by two sets of longitudinal connecting rods 9 to improve the stability of the structure.

[0029] The above embodiments can be combined with each other.

[0030] 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 tunnel transport crane, comprising a ground rail, a gantry mounted on the ground rail, and a lifting trolley mounted on the gantry, the lifting trolley being connected to a lifting device via wire ropes, characterized in that: The lifting device includes two sets of parallel lifting main beams and two sets of movable beams perpendicular to the lifting main beams. The two sets of lifting main beams are connected in the middle by a central support. Each lifting main beam is equipped with a lifting pulley on its upper side. The movable beams are slidably connected to the lifting main beams. Each movable beam is equipped with two sets of symmetrical grippers, which are slidably connected to the movable beams. A hydraulic telescopic rod is installed on the central support. The telescopic end of the hydraulic telescopic rod is connected to the movable beam. A drive motor is installed in the middle of the movable beam. The output end of the drive motor is connected to a transmission screw. A screw nut is correspondingly installed on the upper side of the grippers. The screw nut is threadedly connected to the transmission screw.

2. The tunnel transport crane according to claim 1, characterized in that: Both the main beam and the movable beam of the lifting device are rectangular steel, with the movable beam located on the upper side of the main beam.

3. The tunnel transport crane according to claim 2, characterized in that: Several transverse slides are provided on the front and rear sides of the main beam of the lifting device. The lower side of the movable beam is connected to a first sliding frame. The main beam of the lifting device passes through the first sliding frame and slides with the transverse slides.

4. The tunnel transport crane according to claim 3, characterized in that: The upper side of the gripper is connected to the second sliding frame, and several longitudinal slides are provided on the four sides of the movable beam. The second sliding frame slides in conjunction with the longitudinal slides.

5. The tunnel transport crane according to claim 4, characterized in that: The lead screw and lead screw nut are located inside the movable beam. The side wall of the movable beam has a stroke hole. The second sliding frame is connected to the lead screw nut through a transmission rod, which passes through the stroke hole.

6. The tunnel transport crane according to claim 5, characterized in that: A positioning column is installed on the upper side of the main beam of the lifting device, and a positioning seat is installed on the lower side of the lifting trolley corresponding to the positioning column. The positioning seat has a positioning groove.

7. The tunnel transport crane according to claim 6, characterized in that: Each main lifting beam is equipped with two sets of lifting pulleys on its upper side, and the lifting trolley is equipped with two sets of lifting drums. The lifting drums and lifting pulleys are connected by steel wire ropes.

8. The tunnel transport crane according to claim 7, characterized in that: The lower sides of the two sets of lifting main beams are connected by two sets of longitudinal connecting rods.

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