Movable gantry crane

Abstract

The utility model relates to the technical field of auxiliary lifting appliances of hoisting machinery, in particular to a movable gantry crane which comprises two symmetrically-arranged outer stand column tray frames, steel rail sliding grooves are fixedly formed in the inner walls of the two outer stand column tray frames through bolts, and a loading tray for placing articles is jointly arranged in the two steel rail sliding grooves in a sliding mode. Two symmetrically-arranged trundles are fixedly installed at the bottom ends of the two outer stand column tray frames, limiting frames are fixedly installed at the upper ends of the two outer stand column tray frames, and moving columns are arranged in the two limiting frames in a sliding mode. The loading tray is arranged between the two steel rail sliding grooves in a sliding mode, objects needing to be carried are conveniently placed, the situation that the objects shake in the moving process, and consequently the transportation distance is affected is avoided, the hand winch is shaken in cooperation, the steel wire rope is wound, the steel wire rope pulls the moving column to slide upwards in the limiting frame, and the transportation distance is shortened. The height of the electric hoist is adjusted to be suitable for hoisting and carrying heavy objects on different floors.

Description

Mobile gantry crane Technical Field

[0001] This utility model relates to the field of auxiliary lifting tools for lifting machinery, and in particular to mobile gantry cranes. Background Technology

[0002] A mobile gantry crane is a type of lifting equipment that can be moved flexibly. It consists of a gantry frame and a lifting mechanism, and is equipped with wheels or rails at the bottom, allowing it to move freely within the working area for lifting and unloading heavy objects.

[0003] When moving heavy objects between different floors, gantry cranes are often used to lift and move them, placing the objects in different areas. However, existing gantry cranes mostly move objects by lifting them onto hooks, which can easily cause the objects to sway and increase the risk of them falling. This makes them unsuitable for moving heavy objects between different floors over long distances. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that existing technologies cannot be used for moving heavy objects between different floors over long distances, and a mobile gantry crane is proposed to address this issue.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The mobile gantry crane includes two symmetrically arranged external column pallet frames. Each external column pallet frame has a rail groove fixed to its inner wall by bolts. A load-bearing pallet for placing items is slidably arranged within both rail grooves. Two symmetrically arranged casters are fixedly installed at the bottom of each external column pallet frame. Limit frames are fixedly installed at the top of each external column pallet frame. Moving columns are slidably arranged within each limit frame, and a crossbeam is fixedly installed at the top of both moving columns. An electric hoist for lifting items is fixedly installed on the crossbeam.

[0007] Preferably, each of the two outer column tray frames has two symmetrically arranged support rods fixedly installed on its upper end, and the upper ends of the two support rods are jointly fixedly installed on the outer wall of the limiting frame.

[0008] Preferably, two symmetrically arranged hydraulic rods are fixedly installed at the bottom ends of both outer column tray frames, and a fixing plate is fixedly installed at the bottom ends of both hydraulic rods.

[0009] Preferably, each of the two outer column tray frames has two through holes arranged in opposite directions at its bottom end, and both the two outer column tray frames and the two movable columns have multiple corresponding pin holes.

[0010] Preferably, a first pulley is rotatably mounted at the bottom of each of the two movable columns, and a steel wire rope is slidably provided on the outer wall of each of the two first pulleys.

[0011] Preferably, one end of the wire rope is fixedly installed on the upper inner wall of the limiting frame, a hand-cranked winch is fixedly installed on the outer wall of the limiting frame, the other end of the wire rope is fixedly installed on the hand-cranked winch, a second pulley is fixedly installed on the outer wall of the limiting frame relative to the upper part of the hand-cranked winch, and the outer wall of the wire rope is sleeved on the second pulley.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. This utility model uses a load-bearing pallet that is slidably set between two steel rail grooves, which makes it easy to place items that need to be moved and avoids the items shaking during the movement, thus affecting the transportation distance.

[0014] 2. This utility model uses a hand-cranked winch to wind up the wire rope, causing the wire rope to pull the moving column upward within the limit frame, thus adjusting the height of the electric hoist. It is suitable for hoisting and transporting heavy objects on different floors. Attached Figure Description

[0015] Figure 1 is a structural schematic diagram of the mobile gantry crane proposed in this utility model;

[0016] Figure 2 is a partial enlarged view of area A of the mobile gantry crane proposed in this utility model;

[0017] Figure 3 is a partial cross-sectional schematic diagram of the mobile gantry crane proposed in this utility model;

[0018] Figure 4 is a schematic diagram of the first pulley and wire rope of the mobile gantry crane proposed in this utility model.

[0019] In the diagram: 1. External column pallet frame; 2. Rail slide; 3. Load-bearing pallet; 4. Casters; 5. Hydraulic rod; 6. Fixed plate; 7. Limiting frame; 8. Support rod; 9. Moving column; 10. Through hole; 11. First pulley; 12. Steel wire rope; 13. Second pulley; 14. Hand-cranked winch; 15. Pin hole; 16. Crossbeam; 17. Electric hoist. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Referring to Figures 1-4, the mobile gantry crane includes two symmetrically arranged external column pallet frames 1. The inner walls of both external column pallet frames 1 are bolted with steel rail grooves 2. Load-bearing pallets 3 for placing items are slidably arranged within the two steel rail grooves 2, facilitating the placement of items by the electric hoist 17 on the load-bearing pallets 3. This prevents items from shaking violently during equipment movement, increasing the risk of items falling off and increasing the safe transport distance. Two symmetrically arranged casters 4 are bolted to the bottom of each of the two external column pallet frames 1 for easy movement. Limit frames 7 are fixedly installed at the top of each of the two external column pallet frames 1. Moving columns 9 are slidably arranged within each of the two limit frames 7, and a crossbeam 16 is fixedly installed at the top of each of the two moving columns 9, increasing the safety and stability of the equipment. An electric hoist 17 for lifting items is fixedly installed on the crossbeam 16.

[0022] Two symmetrically arranged support rods 8 are fixedly installed on the upper end of each of the two external column pallet frames 1 by bolts. The upper ends of the two support rods 8 are jointly fixedly installed on the outer wall of the limiting frame 7 by bolts, thereby increasing the stability of the limiting frame 7.

[0023] Two symmetrically arranged hydraulic rods 5 are fixedly installed at the bottom of each of the two external column pallet frames 1. A fixed plate 6 is fixedly installed at the bottom of each of the two hydraulic rods 5. The fixed plate 6 is pushed down by the two hydraulic rods 5 so that the fixed plate 6 is in contact with the ground, which increases the stability of the equipment when hoisting items.

[0024] Two reverse-oriented through holes 10 are provided at the bottom of each of the two outer column tray frames 1. Multiple corresponding pin holes 15 are provided on both the two outer column tray frames 1 and the two movable columns 9. Pins are slidably installed in the pin holes 15 to facilitate the fixing of the movable columns 9.

[0025] Both movable columns 9 are rotatably equipped with first pulleys 11 at their bottom ends, and steel wire ropes 12 are slidably installed on the outer walls of both first pulleys 11.

[0026] One end of the wire rope 12 is fixedly installed on the upper inner wall of the limiting frame 7. A hand-cranked winch 14 is fixedly installed on the outer wall of the limiting frame 7. The other end of the wire rope 12 is fixedly installed on the hand-cranked winch 14. A second pulley 13 is fixedly installed on the outer wall of the limiting frame 7 relative to the upper part of the hand-cranked winch 14. The outer wall of the wire rope 12 is sleeved on the second pulley 13.

[0027] It should be noted that the specific model and specifications of the electric hoist 17 and the hand-cranked winch 14 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0028] The functional principle of this utility model can be explained through the following operation methods:

[0029] In use, the two external column pallet frames 1 are moved to a suitable position by the casters 4, and the items are hoisted by the electric hoist 17. The load pallet 3 is slid between the two steel rail grooves 2 so that the items hoisted by the electric hoist 17 are placed on the load pallet 3, preventing the hoisted items from shaking during movement and affecting the long-distance transportation of the items.

[0030] By cranking the hand winch 14, the wire rope 12 is wound up, reducing the length of the wire rope 12 within the limiting frame 7. The friction between the wire rope 12 and the limiting frame 7 during movement is reduced by the first pulley 11 and the second pulley 13, causing the wire rope 12 to pull the bottom of the moving column 9, making the moving column 9 slide upward. The moving column 9 is fixed by placing the pin in the pin hole 15, and the height of the electric hoist 17 is adjusted, making it suitable for hoisting heavy objects on different floors.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mobile gantry crane, comprising two symmetrically arranged external column pallet frames (1), characterized in that, The inner walls of the two external column pallet frames (1) are fixed with rail grooves (2) by bolts. The two rail grooves (2) are slidably arranged with load-bearing pallets (3) for placing items. The bottom of the two external column pallet frames (1) is fixedly installed with two symmetrically arranged casters (4). The upper ends of the two external column pallet frames (1) are fixedly installed with limit frames (7). The two limit frames (7) are slidably arranged with moving columns (9). The upper ends of the two moving columns (9) are fixedly installed with crossbeams (16). The crossbeams (16) are fixedly installed with electric hoists (17) for lifting items.

2. The mobile gantry crane according to claim 1, characterized in that, Two symmetrically arranged support rods (8) are fixedly installed on the upper ends of the two outer column tray frames (1), and the upper ends of the two support rods (8) are fixedly installed on the outer wall of the limiting frame (7).

3. The mobile gantry crane according to claim 2, characterized in that, Two symmetrically arranged hydraulic rods (5) are fixedly installed at the bottom of each of the two external column tray frames (1), and a fixing plate (6) is fixedly installed at the bottom of each of the two hydraulic rods (5).

4. The mobile gantry crane according to claim 3, characterized in that, Two through holes (10) are opened at the bottom of each of the two outer column tray frames (1), and multiple corresponding pin holes (15) are opened on the two outer column tray frames (1) and the two movable columns (9).

5. The mobile gantry crane according to claim 4, characterized in that, Both of the movable columns (9) are rotatably mounted with first pulleys (11) at their bottom ends, and steel wire ropes (12) are slidably arranged on the outer walls of both first pulleys (11).

6. The mobile gantry crane according to claim 5, characterized in that, One end of the wire rope (12) is fixedly installed on the upper inner wall of the limiting frame (7). A hand-cranked winch (14) is fixedly installed on the outer wall of the limiting frame (7). The other end of the wire rope (12) is fixedly installed on the hand-cranked winch (14). A second pulley (13) is fixedly installed on the outer wall of the limiting frame (7) relative to the upper part of the hand-cranked winch (14). The outer wall of the wire rope (12) is sleeved on the second pulley (13).

Images