Portal crane for hoisting subway precast parts

Abstract

The utility model provides a subway prefabricated part hoist with portal crane, including crane body, the lifting hook of crane body is hoisted with the lifting appliance, and the lifting appliance has the connecting frame and the crane, and the both ends top of connecting frame all is provided with the lifting seat connected with the lifting hook of crane body, and the rotating adjusting mechanism is centrally arranged on the connecting frame, and the bottom of rotating adjusting mechanism is provided with the hinged lug plate, and the middle part of crane is rotatably connected with the hinged lug plate, and one end of connecting frame is hinged with the hydraulic cylinder, and one end of hydraulic cylinder is hinged with the top of crane away from connecting frame, and the both ends of crane are slidably provided with the sliding frame, and the bottom of sliding frame is symmetrically provided with the hook, and the moving adjusting mechanism that drives sliding frame to move and adjust is arranged on the crane, the utility model discloses can be convenient for the rotation angle and the inclination angle of prefabricated part to adjust, can also adjust the hook position flexibly, and the different specifications prefabricated part hoist is flexibly coped with.

Description

Technical Field

[0001] This utility model pertains to cranes, specifically a gantry crane for hoisting precast subway components. Background Technology

[0002] During subway construction, gantry cranes are currently the main method used to lift and install precast concrete components such as tunnel segments, sleepers, and beams.

[0003] In the prior art, Chinese utility model patent with authorization announcement number CN222433875U discloses a special crane for hoisting subway precast components. It can easily adjust the rotation angle of the precast components through the slewing bearing, but it is not easy to adjust the tilt angle of the precast components. In addition, the position of the hook is fixed and it is difficult to adjust the position of the hook to cope with the hoisting of precast components of different specifications.

[0004] Therefore, it is necessary to design a gantry crane for hoisting subway precast components that can easily adjust the rotation and tilt angles of the precast components, and flexibly adjust the hook position to handle the hoisting of precast components of different specifications, in order to solve the current technical problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a gantry crane for lifting subway precast components that can easily adjust the rotation angle and tilt angle of the precast components, and can flexibly adjust the hook position to handle the lifting of precast components of different specifications.

[0006] The technical solution of this utility model is as follows: a gantry crane for hoisting precast subway components, comprising a crane body, a lifting device mounted on the hook of the crane body, the lifting device having a connecting frame and a lifting frame, both ends of the connecting frame having a lifting seat connected to the hook of the crane body, a rotation adjustment mechanism centrally mounted on the connecting frame, a hinged lug at the bottom of the rotation adjustment mechanism, the middle of the lifting frame being rotatably connected to the hinged lug, a hydraulic cylinder hinged to one end of the connecting frame, the end of the hydraulic cylinder opposite to the connecting frame being hinged to the top of the lifting frame, sliding frames slidably mounted at both ends of the lifting frame, hooks symmetrically mounted at the bottom of the sliding frames, and a moving adjustment mechanism for driving the sliding frames to move and adjust along them on the lifting frame.

[0007] Furthermore, the hanger is a rectangular frame structure; the movable adjustment mechanism has a screw that is rotatably disposed inside the hanger along its long side, and an adjustment block is threadedly connected to the outside of the screw, the adjustment block being fixedly connected to the inside of the sliding frame.

[0008] Furthermore, guide rods parallel to the screw are slidably provided at both ends of the adjusting block, and the two ends of the guide rods are fixedly connected to the hanger.

[0009] Furthermore, a hexagonal prism is fixedly provided on the outer side of one end of the screw.

[0010] Furthermore, the rotation adjustment mechanism has a rotating cylinder rotatably disposed inside the connecting frame, a rotating base frame is fixedly disposed at the bottom end of the rotating cylinder, and a drive motor for driving the rotating cylinder to rotate is disposed at the top of the connecting frame; the hinged ear plate is fixedly disposed at the bottom of the rotating base frame.

[0011] Furthermore, a top plate is fixedly provided at the top of the rotating drum, and the top plate is rotatably provided at the top of the connecting frame via a slewing bearing. The slewing bearing has an inner ring fixedly provided at the top of the connecting frame, and an outer ring is rotatably fitted on the outer side of the inner ring. A gear that meshes with the outer ring is provided on the drive motor.

[0012] Furthermore, the drive motor is fixedly mounted on top of the connecting frame via a motor bracket.

[0013] Furthermore, a counterweight is fixedly installed on the end of the connecting frame that is away from the hydraulic cylinder.

[0014] The beneficial effects of this utility model are:

[0015] (1) In this utility model, the prefabricated component is hung on the bottom of the lifting device by a hook. When lifting and installing, the rotation angle of the prefabricated component can be adjusted by the rotation adjustment mechanism. The hydraulic cylinder drives the hanger to rotate in the hinged ear plate, which can adjust the tilt angle of the prefabricated component. During installation, the angle of the prefabricated component can be flexibly adjusted according to the installation needs.

[0016] (2) The position of the sliding frame can be moved and adjusted on the hanger by the movable adjustment mechanism, and the position of the hook at the bottom of the sliding frame can be flexibly adjusted to cope with the lifting of prefabricated parts of different lengths. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the gantry crane used for hoisting precast subway components in this utility model.

[0018] Figure 2 This is a schematic diagram of the lifting device in this utility model.

[0019] Figure 3 This is a partial structural diagram of the lifting device in this utility model. Detailed Implementation

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0021] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1 to 3 As shown, a gantry crane for hoisting precast subway components includes a crane body 20. A lifting device 10 is mounted on the hook of the crane body 20. The lifting device 10 has a connecting frame 1 and a lifting frame 2. Both ends of the connecting frame 1 are equipped with lifting seats 11 connected to the hook of the crane body 20. The lifting seats 11 are hung on the hook. A rotation adjustment mechanism 3 is centrally located on the connecting frame 1. A hinged lug 9 is located at the bottom of the rotation adjustment mechanism 3. The middle part of the lifting frame 2 is rotatably connected to the hinged lug 9. A hydraulic cylinder 4 is hinged to one end of the connecting frame 1. The end of the hydraulic cylinder 4 facing away from the connecting frame 1 is hinged to the top of the lifting frame 2. Sliding frames 5 are slidably mounted at both ends of the lifting frame 2. The precast component is symmetrically provided with hooks 7, and the hanger 2 is provided with a moving adjustment mechanism 6 that drives the sliding frame 5 to move and adjust along it. In this embodiment, the precast component is hung below the lifting device 10 by the hooks 7. During lifting and installation, the rotation angle of the precast component can be adjusted by rotating the adjustment mechanism 3. The hanger 2 is driven to rotate in the hinge ear plate 9 by the hydraulic cylinder 4, which can adjust the tilt angle of the precast component. During installation, the angle of the precast component can be flexibly adjusted according to the installation needs. The moving adjustment mechanism 6 can move and adjust the position of the sliding frame 5 on the hanger 2, and flexibly adjust the position of the hooks 7 at the bottom of the sliding frame 5 to cope with the lifting of precast components of different lengths.

[0023] In some embodiments, the hanger 2 is a rectangular frame structure; the movable adjustment mechanism 6 has a screw 62 that is rotatably disposed inside the hanger 2 along its long side, and an adjustment block 61 is threadedly connected to the outside of the screw 62. The adjustment block 61 is fixedly connected to the inside of the sliding frame 5. When the screw 62 is rotated, the threaded structure between the screw 62 and the adjustment block 61 cooperates, which can drive the adjustment block 61 to move the sliding frame 5 on the hanger 2, thereby realizing flexible adjustment of the position of the hook 7 at the bottom of the sliding frame 5.

[0024] In some embodiments, guide rods 63 parallel to screw 62 are slidably provided at both ends of the adjusting block 61, and both ends of the guide rods 63 are fixedly connected to the hanger 2; the adjusting block 61 is slidably connected to the guide rods 63, which improves the stability of the adjusting block 61 when it is installed and moved on the hanger 2.

[0025] In some embodiments, a hexagonal prism 64 is fixedly provided on the outer side of one end of the screw 62; the hexagonal prism 64 is convenient for clamping so as to facilitate the rotation adjustment of the screw 62.

[0026] In some embodiments, the rotation adjustment mechanism 3 has a rotating cylinder 332 rotatably disposed inside the connecting frame 1. A rotating base frame 31 is fixedly disposed at the bottom end of the rotating cylinder 32, and a drive motor 35 for driving the rotating cylinder 32 to rotate is disposed at the top of the connecting frame 1. A hinged ear plate 9 is fixedly disposed at the bottom of the rotating base frame 31. The drive motor 35 drives the rotating cylinder 32 to rotate, and the rotating cylinder 32 drives the rotating base frame 31 and the hanging foot 2 to rotate, thereby realizing the adjustment of the rotation angle of the prefabricated component.

[0027] In some embodiments, a top plate 33 is fixedly provided at the top of the rotating drum 32. The top plate 33 is rotatably provided at the top of the connecting frame 1 via a slewing bearing 34. The slewing bearing 34 has an inner ring 341 fixedly provided at the top of the connecting frame 1. An outer ring 342 is rotatably fitted on the outer side of the inner ring 341. The outer side of the outer ring 342 has an integrally structured gear ring. A gear is provided on the drive motor 35 that meshes with the outer ring 342. The top plate 33 is assembled and fixed on the top of the outer gear ring 342. The drive motor 35 drives the gear to rotate, and the gear meshes with the gear ring on the outer side of the outer gear ring 342, driving the top plate 33 to drive the rotating drum 32 to rotate.

[0028] In some embodiments, the drive motor 35 is fixedly mounted on the top of the connecting frame 1 via the motor bracket 36.

[0029] In some embodiments, a counterweight 8 is fixedly provided on one end of the connecting frame 1 that is away from the hydraulic cylinder 4.

[0030] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0031] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A gantry crane for hoisting precast subway components, comprising a crane body, wherein a lifting device is mounted on the hook of the crane body, characterized in that: The lifting device has a connecting frame and a lifting frame. Both ends of the connecting frame are provided with lifting seats that are connected to the hooks of the crane body. A rotation adjustment mechanism is centrally located on the connecting frame. A hinged lug is provided at the bottom end of the rotation adjustment mechanism. The middle part of the lifting frame is rotatably connected to the hinged lug. A hydraulic cylinder is hinged to one end of the connecting frame. The end of the hydraulic cylinder opposite to the connecting frame is hinged to the top of the lifting frame. Sliding frames are slidably provided at both ends of the lifting frame. Hooks are symmetrically provided at the bottom of the sliding frames. A moving adjustment mechanism is provided on the lifting frame to drive the sliding frames to move and adjust along them.

2. The gantry crane for hoisting precast subway components according to claim 1, characterized in that: The hanger is a rectangular frame structure; the movable adjustment mechanism has a screw that is rotatably arranged inside the hanger along its long side, and an adjustment block is threadedly connected to the outside of the screw, and the adjustment block is fixedly connected to the inside of the sliding frame.

3. The gantry crane for hoisting precast subway components according to claim 2, characterized in that: The adjusting block has guide rods slidably disposed at both ends, parallel to the screw, and the two ends of the guide rods are fixedly connected to the hanger.

4. The gantry crane for hoisting precast subway components according to claim 2, characterized in that: A hexagonal prism is fixedly installed on the outer side of one end of the screw.

5. The gantry crane for hoisting precast subway components according to claim 1, characterized in that: The rotation adjustment mechanism has a rotating cylinder rotatably disposed inside the connecting frame. A rotating base is fixedly disposed at the bottom end of the rotating cylinder, and a drive motor for driving the rotating cylinder to rotate is disposed at the top of the connecting frame. The hinged lug is fixedly disposed at the bottom of the rotating base.

6. The gantry crane for hoisting precast subway components according to claim 5, characterized in that: A top plate is fixedly installed at the top of the rotating drum. The top plate is rotatably mounted on the top of the connecting frame via a slewing bearing. The slewing bearing has an inner ring fixedly installed on the top of the connecting frame. An outer ring is rotatably fitted on the outer side of the inner ring. A gear that meshes with the outer ring is installed on the drive motor.

7. The gantry crane for hoisting precast subway components according to claim 6, characterized in that: The drive motor is fixedly mounted on top of the connecting frame via a motor bracket.

8. The gantry crane for hoisting precast subway components according to claim 1, characterized in that: A counterweight is fixedly installed on the end of the connecting frame that is away from the hydraulic cylinder.

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