Portal crane travelling mechanism

Abstract

The utility model relates to a hoisting machinery technical field especially discloses a portal crane trolley walking mechanism, including balance beam, the upper hinge support is provided at balance beam top, the bottom of balance beam is connected with two trolleys through two lower hinge supports, every trolley is provided with two walking wheels of even distribution, one trolley end part is provided with the support, is provided with the cleaning device on the support, and the cleaning device includes roller brush mechanism and transmission mechanism, and roller brush mechanism is driven connection with walking wheel through transmission mechanism. The utility model discloses the rotation of contact wheel is driven by the friction between walking wheel and contact wheel and transmission to drive roller brush mechanism by adjusting contact wheel and walking wheel contact, realizes the cleaning to the track top surface and both side surfaces through the rotation of first brush roller and second brush roller, need not extra increase power, reduces use cost, and the overall structure is simple, and adjustment is convenient, and roller brush mechanism and transmission mechanism are all installed in the support interior, and will not produce collision damage, and the use safety is high.

Description

Technical Field

[0001] This utility model relates to the field of lifting machinery technology, and in particular to a gantry crane traveling mechanism. Background Technology

[0002] Gantry cranes are characterized by high site utilization, large operating range, wide adaptability, and strong versatility, and are therefore widely used for loading and unloading operations of goods, freight yards, and bulk cargo in outdoor material yards. Gantry cranes travel on laid tracks. Since gantry cranes are mostly used in outdoor open-air environments, their working environment is relatively harsh. During use, hard particles such as gravel may fall onto the tracks, affecting the movement of the crane and, in severe cases, even causing production accidents.

[0003] Chinese invention patent (CN118357188A) discloses a special cleaning fixture for the traveling mechanism of a crane, including a gantry crane body, a traveling mechanism at the bottom of the gantry crane body, the gantry crane body moving on the guide rail through the traveling mechanism, and a cleaning mechanism at the end of the traveling mechanism; although it can clean the rail, its mechanism is complex, and the cleaning wheel needs to be equipped with a separate geared motor for driving, which increases the cost of use.

[0004] Therefore, it is necessary to propose an improvement to the gantry crane traveling mechanism to overcome the shortcomings of the existing technology. Utility Model Content

[0005] The purpose of this utility model is to solve the problems in the prior art and provide a gantry crane trolley traveling mechanism.

[0006] The technical solution of this utility model is:

[0007] A gantry crane traveling mechanism includes a balance beam, an upper hinge support at the top of the balance beam, and two trolleys connected to the bottom of the balance beam via two lower hinge supports. Each trolley is equipped with two evenly distributed traveling wheels. One of the trolleys has a support at its end, and a cleaning device is mounted on the support. The cleaning device includes a roller brush mechanism and a transmission mechanism. The roller brush mechanism is connected to the traveling wheels via the transmission mechanism.

[0008] Preferably, the transmission mechanism includes a mounting base, a screw, and a contact wheel. An adjusting seat is provided on the mounting base. One end of the screw penetrates and slides inside the adjusting seat. A wheel frame is provided on the other end of the screw. The contact wheel is rotatably mounted on the wheel frame. A spring is sleeved on the screw located between the wheel frame and the adjusting seat. A first pulley coaxial with the contact wheel is provided on one side of the wheel frame. An adjusting nut is threaded onto the screw.

[0009] Preferably, the outer circumferential surface of the contact wheel is covered with a flexible ring gasket.

[0010] Preferably, the roller brush mechanism includes a roller brush seat, a first brush roller, and two second brush rollers. The first brush roller and the two second brush rollers are rotatably mounted on the roller brush seat. The first brush roller is arranged horizontally, and the two second brush rollers are arranged vertically. The first brush roller and the second brush rollers are connected by a transmission. A second pulley coaxial with the first brush roller is provided on one side of the roller brush seat, and a synchronous belt is wound between the second pulley and the first pulley.

[0011] Preferably, a first slot is provided on one side wall of the bracket, a tensioning block is connected to the first slot, a tensioning pulley is provided on the tensioning block, a synchronous belt is wound on the tensioning pulley, an adjusting block is provided on the inner wall of the bracket, an adjusting screw is threadedly connected to the adjusting block, and the end of the adjusting screw abuts against the tensioning block.

[0012] Preferably, the roller brush holder is provided with symmetrically distributed connecting plates, the connecting plates are provided with connecting screw holes, and the two side walls of the bracket are provided with second slots corresponding to the connecting screw holes, and the wing bolts pass through the second slots and are connected in the connecting screw holes.

[0013] Preferably, a geared motor is installed on one side of the trolley, and the geared motor is connected to the two traveling wheels via a transmission.

[0014] Preferably, a buffer and a rail clamp are provided at the end of the support away from the trolley, and a brake is provided at the end of the other trolley.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention adjusts the contact wheel to contact the traveling wheel, and the friction between the traveling wheel and the contact wheel drives the contact wheel to rotate, which in turn drives the roller brush mechanism. The rotation of the first and second brush rollers cleans the top surface and both sides of the track. No additional power is required, reducing the cost of use. The overall structure is simple and easy to adjust. The roller brush mechanism and the transmission mechanism are both installed inside the bracket, so there will be no collision damage, and the safety of use is high. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the support and cleaning device structure of this utility model (with hidden cover plate);

[0020] Figure 4 This is a schematic diagram of the support and cleaning device of this utility model;

[0021] Figure 5 This is a schematic diagram of the transmission mechanism structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the roller brush mechanism of this utility model.

[0023] The components are as follows: 1. Balance beam; 2. Upper hinge support; 3. Lower hinge support; 4. Trolley; 5. Traveling wheel; 6. Gear motor; 7. Buffer; 8. Rail clamp; 9. Brake; 10. Bracket; 11. Mounting seat; 12. Screw; 13. Contact wheel; 14. Adjusting seat; 15. Wheel frame; 16. Spring; 17. First pulley; 18. Adjusting nut; 19. Flexible ring washer; 20. Brush holder; 21. First brush roller; 22. Second brush roller; 23. Second pulley; 24. Synchronous belt; 25. Bevel gear; 26. First slot; 27. Tensioning block; 28. Tensioning pulley; 29. ​​Adjusting block; 30. Adjusting screw; 31. Connecting plate; 32. Connecting screw hole; 33. Second slot; 34. Wing bolt; 35. Handle; 36. Cover plate. Detailed Implementation

[0024] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0025] like Figures 1-6 As shown, a gantry crane traveling mechanism includes a balance beam 1. An upper hinge support 2 is connected to the top of the balance beam 1 for connecting the main crossbeam of the gantry crane (not shown in the figure). Two lower hinge supports 3 are connected to the bottom of the balance beam 1. The two lower hinge supports 3 are symmetrically distributed. A trolley 4 is connected to each lower hinge support 3. Two traveling wheels 5 are installed on each trolley 4. The two traveling wheels 5 are evenly distributed along the length of the trolley 4. A reduction motor 6 is installed on one side wall of the trolley 4. The reduction motor 6 and the two traveling wheels 5 are connected by gear meshing. The reduction motor 6 drives the two traveling wheels 5 to rotate simultaneously. The traveling wheels 5 move by rolling contact on the track. Both traveling wheels 5 are driving wheels, which eliminates the situation of asynchronous movement, avoids slippage, and increases the stability, safety and reliability of movement.

[0026] A brake 9 is installed at the end of one of the trolleys 4 to brake during travel and ensure safety. A bracket 10 is installed at the end of the other trolley 4. The bracket 10 is designed with an open top, bottom and one side. The open side is connected to the trolley 4. A cleaning device is installed inside the bracket 10 to clean foreign objects from the track during travel. A rail clamp 8 and a buffer 7 are installed at the end of the bracket 10. The buffer 7 is used to absorb collision kinetic energy, reduce impact force, protect the mechanical structure, and prevent equipment damage and safety accidents caused by accidental impact or brake failure. The rail clamp 8 can lock the gantry crane on the track to prevent it from sliding or derailing due to accidental thrust.

[0027] like Figures 3-6 As shown, the cleaning device includes a roller brush mechanism and a transmission mechanism. The transmission mechanism obtains power through the rotation of the walking wheel 5 to provide driving force for the roller brush mechanism.

[0028] The transmission mechanism includes a mounting base 11, a screw 12, and a contact wheel 13. The mounting base 11 is mounted on the side wall of the trolley 4. An adjusting seat 14 is machined on the mounting base 11. The screw 12 penetrates and connects to the adjusting seat 14, allowing the screw 12 to slide relative to the adjusting seat 14. To ensure that the screw 12 only slides relative to the adjusting seat 14 without rotating, two parallel planes are machined on the adjusting seat 14, and two corresponding planes are milled on the screw 12. A wheel frame 15 is mounted on one end of the screw 12, and the contact wheel 13 is mounted on the wheel frame 15, allowing the contact wheel 13 to rotate relative to the wheel frame 15. A spring 16 is fitted on the screw 12 between the wheel frame 15 and the adjusting seat 14, with one end of the spring 16 abutting against the wheel frame 15. 5. The other end of the spring 16 abuts against the adjusting seat 14. Under the action of the spring 16, the wheel frame 15 makes the contact wheel 13 close to the edge of the traveling wheel 5. In order to increase the friction between the contact wheel 13 and the traveling wheel 5, a flexible ring pad 19 is covered on the outer circumference of the contact wheel 13. The contact wheel 13 and the traveling wheel 5 are kept in reliable contact by the compression deformation of the flexible ring pad 19. A first pulley 17 is installed on one side of the wheel frame 15. The first pulley 17 is coaxially fixedly connected to the contact wheel 13 and can rotate synchronously with the rotation of the contact wheel 13. An adjusting nut 18 is threaded on the screw 12. The installation distance of the contact wheel 13 on the adjusting seat 14 is adjusted by turning the adjusting nut 18 and its position is fixed.

[0029] The roller brush mechanism includes a roller brush seat 20, a first brush roller 21, and two second brush rollers 22. The roller brush seat 20 is connected to the bracket 10 and its installation position can be adjusted up and down relative to the bracket 10. Specifically, symmetrically distributed connecting plates 31 are connected to both sides of the roller brush seat 20. Connecting screw holes 32 are machined on the connecting plates 31. Second slots 33 are machined on both sides of the bracket 10. Wing bolts 34 are passed through the second slots 33 and connected to the connecting screw holes 32 to realize the installation of the roller brush seat 20 on the bracket 10. The installation height of the roller brush seat 20 on the bracket 10 is adjusted by sliding the wing bolts 34 in the second slots 33. After adjustment, the wing bolts 34 are tightened to fix the position. To facilitate the adjustment of the roller brush seat 20, a handle 35 can be installed on the top of the roller brush seat 20. The handle 35 can be used to lift the roller brush seat 20. For ease of operation, the first brush roller 21 and the two second brush rollers 22 are all connected to the brush holder 20 by bearing seats. After installation, the axis of the first brush roller 21 is horizontal, and the axes of the two second brush rollers 22 are vertical. The two second brush rollers 22 are located on both sides of the first brush roller 21, and there is a transmission connection between the first brush roller 21 and the two second brush rollers 22. Specifically, bevel gears 25 are installed at both ends of the first brush roller 21 and at the upper end of the second brush roller 22. The bevel gears 25 of the first brush roller 21 mesh with the bevel gears 25 at the upper end of the two second brush rollers 22. A second pulley 23 is installed at one end of the first brush roller 21 through one side wall of the brush holder 20. A synchronous belt 24 is wound between the first pulley 17 and the second pulley 23. To ensure the cleaning effect on the track, the first brush roller 21 and the second brush roller 22 can be made of wire brushes.

[0030] Due to the vertical adjustment of the roller brush holder 20 relative to the bracket 10, in order to ensure the tension of the synchronous belt 24, two parallel first slots 26 are machined on the side wall of the bracket 10. A tensioning block 27 is connected to the first slot 26, and a tensioning pulley 28 is installed on the tensioning block 27. The synchronous belt 24 passes around the tensioning pulley 28. An adjusting block 29 is connected to the inner wall of the bracket 10. An adjusting screw 30 is threaded onto the adjusting block 29. The end of the adjusting screw 30 abuts against the tensioning block 27. By turning the adjusting screw 30, the tensioning block 27 is pushed to slide along the first slot 26, thereby realizing the tension adjustment of the synchronous belt 24 and ensuring the reliable transmission of the synchronous belt 24 between the first pulley 17 and the second pulley 23. The tensioning block 27 is also installed and connected to the second slot 33 using a wing bolt 34.

[0031] like Figure 4 As shown, to ensure the safety of the cleaning device installed inside the bracket 10, a cover plate 36 can be installed at the open position at the top of the bracket 10. One end of the cover plate 36 is hinged to the bracket 10, which can realize the opening and closing of the cover plate relative to the bracket 10.

[0032] The working principle of this utility model is as follows:

[0033] When not in operation, the roller brush holder 20 is in the upper position, and the wing bolt 34 in the connecting screw hole 32 is at the upper end of the second slot 33;

[0034] In use, adjust the mounting positions of the screw 12 and wheel frame 15 on the adjusting seat 14 by adjusting nut 18, so that the contact wheel 13 abuts against the traveling wheel 5. Spring 16 maintains the contact pressure between the contact wheel 13 and the traveling wheel 5. Loosen the wing bolt 34 in the connecting screw hole 32, and move the roller brush seat 20 downward by using handle 35, so that the connecting screw hole 32 aligns with the lower end of the second slot 33. Tighten the wing bolt 34 to fix the position of the roller brush seat 20 relative to the bracket 10. At this time, the first brush roller 21 is located on the upper side of the track, and the two second brush rollers 22 are located on both sides of the track. Synchronous belt 2 4. The timing belt 24 is wound between the first pulley 17, the second pulley 23 and the tension pulley 28. The position of the adjusting block 29 is adjusted by the adjusting screw 30 to maintain the tension of the timing belt 24. The reduction motor 6 drives the traveling wheel 5 to roll on the track. The contact wheel 13 rotates due to the friction between the contact wheel 13 and the traveling wheel 5. Through the transmission of the first pulley 17, the second pulley 23 and the timing belt 24, the first brush roller 21 is driven to rotate. The second brush roller 22 is driven to rotate through the meshing of the bevel gear 25 and the timing belt 24. While moving, the top and sides of the track are brushed to keep the track surface clean.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A gantry crane traveling mechanism, comprising a balance beam (1), wherein an upper hinge support (2) is provided on the top of the balance beam (1), characterized in that, The bottom of the balance beam (1) is connected to two trolleys (4) through two lower hinge supports (3). Each trolley (4) is provided with two evenly distributed walking wheels (5). One of the trolleys (4) is provided with a bracket (10) at its end. The bracket (10) is provided with a cleaning device. The cleaning device includes a roller brush mechanism and a transmission mechanism. The roller brush mechanism is connected to the walking wheels (5) through the transmission mechanism.

2. The gantry crane traveling mechanism according to claim 1, characterized in that: The transmission mechanism includes a mounting base (11), a screw (12), and a contact wheel (13). An adjusting seat (14) is provided on the mounting base (11). One end of the screw (12) penetrates and slides inside the adjusting seat (14). A wheel frame (15) is provided on the other end of the screw (12). The contact wheel (13) is rotatably mounted on the wheel frame (15). A spring (16) is sleeved on the screw (12) located between the wheel frame (15) and the adjusting seat (14). A first pulley (17) coaxial with the contact wheel (13) is provided on one side of the wheel frame (15). An adjusting nut (18) is threaded onto the screw (12).

3. The gantry crane traveling mechanism according to claim 2, characterized in that: The outer circumferential surface of the contact wheel (13) is covered with a flexible ring pad (19).

4. The gantry crane traveling mechanism according to claim 2, characterized in that: The roller brush mechanism includes a roller brush seat (20), a first brush roller (21) and two second brush rollers (22). The first brush roller (21) and the two second brush rollers (22) are rotatably mounted on the roller brush seat (20). The first brush roller (21) is arranged in the horizontal direction and the two second brush rollers (22) are arranged in the vertical direction. The first brush roller (21) and the second brush rollers (22) are connected by transmission. A second pulley (23) coaxial with the first brush roller (21) is provided on one side of the roller brush seat (20). A synchronous belt (24) is wound between the second pulley (23) and the first pulley (17).

5. The gantry crane traveling mechanism according to claim 4, characterized in that: A first slot (26) is provided on one side wall of the bracket (10), a tensioning block (27) is connected to the first slot (26), a tensioning pulley (28) is provided on the tensioning block (27), a synchronous belt (24) is wound around the tensioning pulley (28), an adjusting block (29) is provided on the inner wall of the bracket (10), an adjusting screw (30) is threaded on the adjusting block (29), and the end of the adjusting screw (30) abuts against the tensioning block (27).

6. The gantry crane traveling mechanism according to claim 4, characterized in that: The roller brush holder (20) is provided with symmetrically distributed connecting plates (31), and the connecting plates (31) are provided with connecting screw holes (32). The two side walls of the bracket (10) are provided with second slots (33) corresponding to the connecting screw holes (32). The wing bolts (34) pass through the second slots (33) and are connected to the connecting screw holes (32).

7. The gantry crane traveling mechanism according to claim 1, characterized in that: A geared motor (6) is provided on one side of the trolley (4), and the geared motor (6) is connected to two traveling wheels (5) for transmission.

8. The gantry crane traveling mechanism according to claim 1, characterized in that: The support (10) is provided with a buffer (7) and a rail clamp (8) at the end away from the trolley (4), and a brake (9) is provided at the end of the other trolley (4).

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