A gantry crane with high stability

Abstract

This invention discloses a highly stable gantry crane, relating to the technical field of gantry crane devices. To address the problem that debris on or around the gantry crane's track can affect its operation and threaten its safety, the invention provides a solution. Support legs are fixedly installed at the front and rear ends of both sides below the main beam. A crossbeam is fixedly installed below the support legs, and a gantry traveling mechanism is fixedly installed below the crossbeam. A road clearing mechanism is installed on one side of the crossbeam of the gantry traveling mechanism, and a support base is installed at the lower end of the road clearing mechanism. A loading ramp is installed at one end of the support base, and a unloading ramp is installed at the other end of the support base away from the support legs. A wheel drive groove is provided inside the support base, and side loading wheels are symmetrically arranged on both the front and rear sides of the wheel drive groove on the loading ramp side.

Description

Technical Field

[0001] This invention relates to the field of gantry crane technology, and in particular to a gantry crane with high stability. Background Technology

[0002] Gantry cranes are a variant of bridge cranes. In ports, they are mainly used for loading and unloading cargo and bulk materials in outdoor freight yards and material yards. Their metal structure resembles a portal frame, with two legs supporting the main beam, allowing them to travel directly on ground-level rails. The main beam can have cantilever beams extending outwards at both ends. Gantry cranes are characterized by high site utilization, large operating range, wide adaptability, and strong versatility, and are widely used in port freight yards.

[0003] Chinese Patent Publication No. CN203373021U, authorized on January 1, 2014, discloses a gantry crane, including a gantry frame. The gantry frame includes two crossbeams and legs supporting the two crossbeams. The gantry crane also includes a portal beam spanning the two crossbeams, with a lifting mechanism mounted on the portal beam. This utility model of a gantry crane, by setting a portal beam on the gantry frame and then installing a lifting mechanism on the portal beam, allows for the removal of faulty equipment from the gantry frame via the lifting mechanism when equipment on the crossbeams malfunctions. This eliminates the need for a dedicated crane for lifting and lowering faulty equipment, enabling timely repair and improving crane utilization.

[0004] The existing technical solutions mentioned above have the following drawbacks: When gantry cranes are in use, debris above or on both sides of the trolley rails can affect the operation of the gantry cranes, threatening their operational safety. Therefore, we propose a gantry crane with high stability to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a gantry crane with high stability, in order to solve the problem mentioned in the background art that when gantry cranes are in use, debris above or on both sides of the trolley rails will affect the operation of the gantry crane and threaten its operational safety.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a gantry crane with high stability, comprising a main beam, a trolley control system, a trolley control system, a clamping control system, and a track. Support legs are fixedly installed at the front and rear ends of both sides below the main beam. A crossbeam is fixedly installed below the support legs. A trolley traveling mechanism is fixedly installed below the crossbeam. A road obstacle clearing mechanism is installed on one side of the trolley traveling mechanism, away from the crossbeam. A support base is installed at the lower end of the road obstacle clearing mechanism. A loading ramp is installed at one end of the support base, and a unloading ramp is installed at the other end of the support base away from the support legs. A wheel drive groove is provided inside the support base. Side loading wheels are symmetrically arranged on the front and rear sides of the wheel drive groove on one side of the loading ramp, and adjacent side loading wheels are connected by belt drive. A first positive loading wheel group and a second positive loading wheel group are arranged between the two side loading wheels. A track groove is provided at the lower end of the support base, and the track is located inside the track groove.

[0007] Preferably, an operating room is movably disposed above the main beam, and a lifting hook is disposed below the operating room.

[0008] Preferably, the upper end of the trolley running mechanism is provided with a trolley running mechanism connecting frame, and the trolley running mechanism connecting frame is fixedly connected to the crossbeam. Trolley driving mechanisms are symmetrically fixed on both sides below the trolley running mechanism connecting frame, and a trolley parking buffer block is fixedly provided on the upper end of one trolley driving mechanism near the obstacle clearing mechanism.

[0009] Preferably, protective baffles are provided on the front and rear edges above the feeding slope, five sets of the first positive feeding wheel group are provided, three sets of the second positive feeding wheel group are provided, the second positive feeding wheel group is spaced apart between the first positive feeding wheel group, and the first positive feeding wheel group and the second positive feeding wheel group are connected by belt drive.

[0010] Preferably, a first transmission wheel set and a second transmission wheel set are provided at the middle position of the material wheel drive groove, and the second transmission wheel set is spaced apart from the first transmission wheel set. The first transmission wheel set and the second transmission wheel set are connected by belt drive. Two feeding wheel sets are provided inside the material wheel drive groove on one side of the feeding slope, and the feeding wheel sets are connected by belt drive. The rotation angle of the first transmission wheel set and the second transmission wheel set is perpendicular to the rotation angle of the feeding wheel set. The rotation angle of the first positive feeding wheel set and the second positive feeding wheel set is 25 degrees with the rotation angle of the side feeding wheel set. The spacing between the transmission wheels on the first transmission wheel set is greater than that on the second transmission wheel set. The transmission wheels of the first transmission wheel set and the second transmission wheel set are symmetrically arranged about the center position of the material wheel drive groove.

[0011] Preferably, a material wheel drive motor is provided on one side of the feeding wheel assembly, one side of the second transmission wheel assembly near the feeding wheel assembly, and one side of the lower end feeding wheel, and the material wheel drive motor is respectively connected to the side feeding wheel, the first transmission wheel assembly, and the material wheel drive motor.

[0012] Preferably, a positive feeding wheel groove is provided at the middle position of the upper end of the feeding slope, and side feeding wheel grooves are provided on both sides of the upper end of the feeding slope. The upper end of the side feeding wheel passes through and extends to the top of the side feeding wheel groove. The positive feeding wheel groove is correspondingly provided with the first positive feeding wheel group and the second positive feeding wheel group. The upper ends of the first positive feeding wheel group and the second positive feeding wheel group pass through and extend to the top of the positive feeding wheel groove. The side feeding wheel is located below the first positive feeding wheel group and the second positive feeding wheel group.

[0013] Preferably, the upper end of the support base is provided with multiple sets of transmission wheel grooves, and the transmission wheels of the first transmission wheel group and the second transmission wheel group are correspondingly arranged with the transmission wheel grooves. The upper ends of the transmission wheels of the first transmission wheel group and the second transmission wheel group pass through and extend to the top of the transmission wheel groove. A feeding wheel groove is provided on one side of the upper end of the material wheel drive groove, and the upper end of the feeding wheel group passes through and extends to the top of the feeding wheel groove.

[0014] Preferably, a material conveying trough is provided inside one side of the protective baffle, and a material discharge trough is provided inside the other side of the protective baffle. The material conveying trough and the material discharge trough are arranged perpendicularly in an L-shape. The height of the material discharge trough gradually decreases from the side closest to the material conveying trough to the other side. The height of the material feeding slope gradually decreases from the side closest to the material conveying trough to the other side, and gradually decreases from the center of the material feeding slope to both sides.

[0015] Preferably, the hook is equipped with a sway sensor and a tilt angle sensor, with the sway sensor located to one side of the tilt angle sensor. The control room is equipped with a control console and a PLC module. The output of the control console is electrically connected to the input of the PLC module. The outputs of the sway sensor and the tilt angle sensor are electrically connected to the input of the PLC module. The output of the PLC module is electrically connected to the input of the frequency converter. The output of the frequency converter is electrically connected to the inputs of the trolley control system, the trolley control system, and the clamping control system, respectively.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention, while the trolley traveling mechanism moves, activates the material wheel drive motor to drive the side loading wheel, the first positive loading wheel group, the second positive loading wheel group, the first transmission wheel group, the second transmission wheel group, and the unloading wheel group to rotate. Items above and on both sides of the track will gradually move into the conveying trough due to the angle of the loading slope and the drive of the side loading wheel, the first positive loading wheel group, and the second positive loading wheel group. The items are then transferred to one side of the unloading trough by the rotation of the first and second transmission wheel groups within the conveying trough. Furthermore, with the tilt angle of the unloading trough and the drive of the unloading wheel group, the items move away from the track, thus not affecting the normal operation of the gantry crane. This solves the problem currently prevalent in the market where debris above or on both sides of the trolley track affects the operation of the gantry crane, threatening its operational safety.

[0018] This invention monitors the sway angle and sway frequency of the hook using a sway sensor and a tilt angle sensor, and transmits the data to the control console. When the sway angle is greater than three degrees during clamping, the PLC module controls the trolley control system and the crane control system to move the hook in the same direction as the sway angle and frequency, thereby quickly eliminating the swaying when clamping goods and improving the stability during clamping. Attached Figure Description

[0019] Figure 1 This is a side view of the present invention;

[0020] Figure 2 This is the front view of the present invention;

[0021] Figure 3 This is a diagram showing the connection relationship between the crossbeam and the obstacle removal mechanism in this invention;

[0022] Figure 4 This is a perspective view of the obstacle removal mechanism in this invention;

[0023] Figure 5 This is a cross-sectional view of the obstacle clearing mechanism in this invention;

[0024] Figure 6 This is a structural diagram of the hook in this invention;

[0025] Figure 7 This is a schematic diagram of the present invention.

[0026] In the diagram: 1. Main beam; 2. Support leg; 3. Control room; 4. Hook; 5. Trolley traveling mechanism; 6. Crossbeam; 7. Obstacle clearing mechanism; 8. Trolley traveling mechanism connecting frame; 9. Trolley drive mechanism; 10. Trolley parking buffer block; 11. Track; 12. Support seat; 13. Discharge ramp; 14. Track groove; 15. Protective baffle; 16. Conveying chute; 17. Loading ramp; 18. Side loading wheel groove; 19. Front loading wheel groove; 20. Transmission wheel groove; 21. Discharge. 21. Wheel groove; 22. Feeding chute; 23. Side feeding wheel; 24. First positive feeding wheel group; 25. Second positive feeding wheel group; 26. First transmission wheel group; 27. Second transmission wheel group; 28. Feeding wheel group; 29. ​​Material wheel drive motor; 30. Material wheel drive groove; 31. Shaking sensor; 32. Tilting angle sensor; 33. Control console; 34. PLC module; 35. Trolley control system; 36. Trolley control system; 37. Clamping control system; 38. Frequency converter. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Please see Figure 1-7 One embodiment of the present invention provides a highly stable gantry crane, comprising a main beam 1, a trolley control system 35, a trolley control system 36, a clamping control system 37, and a track 11. Support legs 2 are fixedly installed at the front and rear ends of both sides below the main beam 1. A crossbeam 6 is fixedly installed below the support legs 2. A trolley traveling mechanism 5 is fixedly installed below the crossbeam 6. A road obstacle clearing mechanism 7 is installed on one side of the trolley traveling mechanism 5 along the crossbeam 6. A support seat 12 is installed at the lower end of the road obstacle clearing mechanism 7. One end of the support seat 12... A feeding ramp 17 is provided, and a discharging ramp 13 is provided on the other side of the support base 12 away from the support leg 2. A material wheel drive groove 30 is provided inside the support base 12. Side feeding wheels 23 are symmetrically arranged on the front and rear sides of the material wheel drive groove 30 on one side of the feeding ramp 17, and adjacent side feeding wheels 23 are connected by belt drive. A first positive feeding wheel group 24 and a second positive feeding wheel group 25 are provided between the two side feeding wheels 23. A track groove 14 is provided at the lower end of the support base 12, and the track 11 is located inside the track groove 14.

[0029] Please see Figure 1 An operating room 3 is movable above the main beam 1, and a hook 4 is installed below the operating room 3.

[0030] Please see Figure 1-3The upper end of the trolley running mechanism 5 is provided with a trolley running mechanism connecting frame 8, and the trolley running mechanism connecting frame 8 is fixedly connected to the crossbeam 6. Trolley driving mechanisms 9 are symmetrically fixed on both sides below the trolley running mechanism connecting frame 8. A trolley parking buffer block 10 is fixedly provided on the upper end of one trolley driving mechanism 9 near the road obstacle clearing mechanism 7.

[0031] Please see Figure 4 and Figure 5 Protective baffles 15 are provided on the front and rear edges above the feeding slope 17. Five sets of the first positive feeding wheel group 24 are provided, and three sets of the second positive feeding wheel group 25 are provided. The second positive feeding wheel group 25 is spaced between the first positive feeding wheel group 24. The first positive feeding wheel group 24 and the second positive feeding wheel group 25 are connected by belt drive.

[0032] Please see Figure 4 and Figure 5 A first transmission wheel set 26 and a second transmission wheel set 27 are provided at the middle position of the material wheel drive groove 30, and the second transmission wheel set 27 is spaced apart from the first transmission wheel set 26. The first transmission wheel set 26 and the second transmission wheel set 27 are connected by belt drive. Two discharge wheel sets 28 are provided inside the material wheel drive groove 30 on one side of the discharge slope 13, and the discharge wheel sets 28 are connected by belt drive. The rotation angle of the first transmission wheel set 26 and the second transmission wheel set 27 is perpendicular to the rotation angle of the discharge wheel set 28. The rotation angle of the first positive loading wheel set 24 and the second positive loading wheel set 25 is 25 degrees with the rotation angle of the side loading wheel 23. The spacing between the transmission wheels on the first transmission wheel set 26 is greater than that on the second transmission wheel set 27. The transmission wheels of the first transmission wheel set 26 and the second transmission wheel set 27 are symmetrically arranged about the center position of the material wheel drive groove 30.

[0033] Please see Figure 4 and Figure 5 A material wheel drive motor 29 is provided on one side of the feeding wheel group 28, one side of the second transmission wheel group 27 near the feeding wheel group 28, and one side of the lower end feeding wheel 23. The material wheel drive motor 29 is connected to the side feeding wheel 23, the first transmission wheel group 26 and the material wheel drive motor 29 respectively.

[0034] Please see Figure 4 and Figure 5A positive feeding wheel groove 19 is provided at the middle position of the upper end of the feeding slope 17. Side feeding wheel grooves 18 are provided on both sides of the upper end of the feeding slope 17. The upper end of the side feeding wheel 23 passes through and extends to the top of the side feeding wheel groove 18. The positive feeding wheel groove 19 is correspondingly provided with the first positive feeding wheel group 24 and the second positive feeding wheel group 25. The upper ends of the first positive feeding wheel group 24 and the second positive feeding wheel group 25 pass through and extend to the top of the positive feeding wheel groove 19. The side feeding wheel 23 is located below the first positive feeding wheel group 24 and the second positive feeding wheel group 25.

[0035] Please see Figure 4 and Figure 5 The upper end of the support base 12 is provided with multiple sets of transmission wheel grooves 20, and the transmission wheels of the first transmission wheel group 26 and the second transmission wheel group 27 are correspondingly arranged with the transmission wheel grooves 20. The upper ends of the transmission wheels of the first transmission wheel group 26 and the second transmission wheel group 27 pass through and extend above the transmission wheel grooves 20. A feeding wheel groove 21 is provided on one side of the upper end of the material wheel drive groove 30, and the upper end of the feeding wheel group 28 passes through and extends above the feeding wheel groove 21.

[0036] Please see Figure 4 and Figure 5 The protective baffle 15 has a material conveying trough 16 inside one side and a material discharge trough 22 inside the other side. The material conveying trough 16 and the material discharge trough 22 are arranged in an L-shape perpendicularly. The height of the material discharge trough 22 gradually decreases from the side closest to the material conveying trough 16 to the other side. The height of the material feeding slope 17 gradually decreases from the side closest to the material conveying trough 16 to the other side, and gradually decreases from the center of the material feeding slope 17 to both sides.

[0037] Please see Figure 6 and Figure 7 The hook 4 is equipped with a sway sensor 31 and a tilt angle sensor 32, with the sway sensor 31 located on one side of the tilt angle sensor 32. The control room 3 is equipped with a control console 33 and a PLC module 34. The output terminal of the control console 33 is electrically connected to the input terminal of the PLC module 34. The output terminals of the sway sensor 31 and the tilt angle sensor 32 are electrically connected to the input terminal of the PLC module 34. The output terminal of the PLC module 34 is electrically connected to the input terminal of the frequency converter 38. The output terminal of the frequency converter 38 is electrically connected to the input terminals of the trolley control system 35, the trolley control system 36, and the clamping control system 37, respectively.

[0038] Working Principle: During operation, the gantry crane is adjusted via the control console 33. The control console 33 transmits control signals to the PLC module 34. The PLC module 34 controls the trolley control system 35, the trolley control system 36, and the clamping control system 37 via the frequency converter 38. This controls the trolley control system 35, the trolley control system 36, and the clamping control system 37 to adjust the gantry crane. Meanwhile, the sway sensor 31 and the tilt angle sensor 32 monitor the sway angle and frequency of the hook 4 and transmit this data to the control console 33. When the sway angle exceeds three degrees during clamping, the PLC module 34 controls the trolley control system 35 and the trolley control system 36 to move the hook 4 in the correct direction according to the sway angle and frequency, thereby quickly eliminating swaying when clamping goods. To improve stability during clamping, while the trolley traveling mechanism 5 moves, the material wheel drive motor 29 is activated to drive the side loading wheel 23, the first positive loading wheel group 24, the second positive loading wheel group 25, the first transmission wheel group 26, the second transmission wheel group 27, and the unloading wheel group 28 to rotate. The items above and on both sides of the track 11 will gradually move into the conveying trough 16 as the angle of the loading slope 17 and the drive of the side loading wheel 23, the first positive loading wheel group 24, and the second positive loading wheel group 25 are adjusted. The items are then transferred to one side of the unloading trough 22 by the rotation of the first transmission wheel group 26 and the second transmission wheel group 27 within the conveying trough 16. Finally, as the unloading trough 22 tilts and the unloading wheel group 28 is driven, the items move away from the track 11, thus not affecting the normal operation of the gantry crane.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gantry crane with high stability, comprising a main beam (1), a trolley control system (35), a trolley control system (36), a clamping control system (37), and a rail (11), characterized in that: Support legs (2) are fixedly installed at the front and rear ends of the two sides below the main beam (1). A crossbeam (6) is fixedly installed below the support legs (2). A trolley traveling mechanism (5) is fixedly installed below the crossbeam (6). A road obstacle clearing mechanism (7) is installed on the side of the trolley traveling mechanism (5) away from the crossbeam (6). A support seat (12) is installed at the lower end of the road obstacle clearing mechanism (7). A loading ramp (17) is installed at one end of the support seat (12). The support leg (2) is located away from the other end of the support seat (12). A feeding ramp (13) is provided on one side of the support base (12). A wheel drive groove (30) is provided inside the support base (12). Side feeding wheels (23) are symmetrically arranged on the front and rear sides of the wheel drive groove (30) on one side of the feeding ramp (17). Adjacent side feeding wheels (23) are connected by belt drive. A first positive feeding wheel group (24) and a second positive feeding wheel group (25) are provided between the two side feeding wheels (23). A track groove (14) is provided at the lower end of the support base (12). The track (11) is located on the track. Inside the channel (14), a first transmission wheel set (26) and a second transmission wheel set (27) are provided at the middle position of the wheel drive channel (30), and the second transmission wheel set (27) and the first transmission wheel set (26) are spaced apart. The first transmission wheel set (26) and the second transmission wheel set (27) are connected by belt drive. Inside the wheel drive channel (30) on one side of the discharge slope (13), two discharge wheel sets (28) are provided, and the discharge wheel sets (28) are connected by belt drive. The first transmission wheel set ( 26) The rotation angle of the second transmission wheel group (27) is perpendicular to the rotation angle of the feeding wheel group (28), and the rotation angle of the first positive feeding wheel group (24) and the second positive feeding wheel group (25) is 25 degrees with the rotation angle of the side feeding wheel (23). The distance between the transmission wheels on the first transmission wheel group (26) is greater than that on the second transmission wheel group (27), and the transmission wheels of the first transmission wheel group (26) and the second transmission wheel group (27) are symmetrically arranged about the center position of the material wheel drive groove (30).

2. The gantry crane with high stability according to claim 1, characterized in that: An operating room (3) is movably installed above the main beam (1), and a hook (4) is installed below the operating room (3).

3. A gantry crane with high stability according to claim 1, characterized in that: The upper end of the trolley running mechanism (5) is provided with a trolley running mechanism connecting frame (8), and the trolley running mechanism connecting frame (8) is fixedly connected to the crossbeam (6). Trolley driving mechanisms (9) are symmetrically fixed on both sides below the trolley running mechanism connecting frame (8). A trolley parking buffer block (10) is fixedly provided on the upper end of one side of the trolley driving mechanism (9) near the road obstacle clearing mechanism (7).

4. A gantry crane with high stability according to claim 2, characterized in that: Protective baffles (15) are provided on the front and rear edges above the feeding slope (17). The first positive feeding wheel group (24) is provided with five sets, and the second positive feeding wheel group (25) is provided with three sets. The second positive feeding wheel group (25) is spaced between the first positive feeding wheel group (24). The first positive feeding wheel group (24) and the second positive feeding wheel group (25) are connected by belt drive.

5. A gantry crane with high stability according to claim 4, characterized in that: A material wheel drive motor (29) is provided on one side of the feeding wheel group (28), one side of the second transmission wheel group (27) near the feeding wheel group (28), and one side of the lower end feeding wheel (23). The material wheel drive motor (29) is connected to the side feeding wheel (23), the first transmission wheel group (26), and the material wheel drive motor (29) respectively.

6. A gantry crane with high stability according to claim 5, characterized in that: A positive loading wheel groove (19) is provided at the middle position of the upper end of the loading slope (17). Side loading wheel grooves (18) are provided on both sides of the upper end of the loading slope (17). The upper end of the side loading wheel (23) passes through and extends to the top of the side loading wheel groove (18). The positive loading wheel groove (19) is correspondingly provided with the first positive loading wheel group (24) and the second positive loading wheel group (25). The upper ends of the first positive loading wheel group (24) and the second positive loading wheel group (25) pass through and extend to the top of the positive loading wheel groove (19). The side loading wheel (23) is located below the first positive loading wheel group (24) and the second positive loading wheel group (25).

7. A gantry crane with high stability according to claim 6, characterized in that: The upper end of the support base (12) is provided with multiple sets of transmission wheel grooves (20), and the transmission wheels of the first transmission wheel group (26) and the second transmission wheel group (27) are correspondingly arranged with the transmission wheel grooves (20). The upper ends of the transmission wheels of the first transmission wheel group (26) and the second transmission wheel group (27) pass through and extend to the top of the transmission wheel grooves (20). A feeding wheel groove (21) is provided on one side of the upper end of the material wheel drive groove (30), and the upper end of the feeding wheel group (28) passes through and extends to the top of the feeding wheel groove (21).

8. A gantry crane with high stability according to claim 7, characterized in that: The protective baffle (15) has a material conveying trough (16) inside one side and a material discharge trough (22) inside the other side. The material conveying trough (16) and the material discharge trough (22) are arranged in an L-shape perpendicularly. The height of the material discharge trough (22) gradually decreases from the side closest to the material conveying trough (16) to the other side. The height of the material feeding slope (17) gradually decreases from the side closest to the material conveying trough (16) to the other side, and gradually decreases from the center of the material feeding slope (17) to both sides.

9. A gantry crane with high stability according to claim 8, characterized in that: The hook (4) is equipped with a sway sensor (31) and a tilt angle sensor (32) respectively, and the sway sensor (31) is located on one side of the tilt angle sensor (32). The control room (3) is equipped with a control console (33) and a PLC module (34). The output end of the control console (33) is electrically connected to the input end of the PLC module (34). The output ends of the sway sensor (31) and the tilt angle sensor (32) are electrically connected to the input end of the PLC module (34). The output end of the PLC module (34) is electrically connected to the input end of the frequency converter (38). The output end of the frequency converter (38) is electrically connected to the input ends of the trolley control system (35), the trolley control system (36), and the clamping control system (37) respectively.

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