Automatic take-up and pay-off device for steel wire rope of portal crane

Abstract

The utility model relates to an automatic take-up and pay-off device for a portal crane steel wire rope, which comprises a horizontally arranged base, two circular storage baskets are rotatably connected onto the base, the tops of the storage baskets are open, and a hook for fixing a rope head of the steel wire rope is arranged on any storage basket. The base is connected with a driving device used for driving the two storage baskets to rotate and a controller used for controlling the driving device, and the base is provided with steel wire rope guiding devices in one-to-one correspondence with the storage baskets. Each steel wire rope guider comprises a stand column vertically connected to the base on one side of the corresponding storage basket, a guide rod horizontally connected to the top end of the stand column and extending into the corresponding storage basket, and a sliding block connected to the guide rod in a sliding mode, the sliding block slides in the radial direction of the corresponding storage basket, and at least one guide hole is vertically formed in the sliding block. The utility model solves the technical problem that the old steel wire rope of the portal crane needs to be rolled by workers and has safety risk.

Description

Technical Field

[0001] This utility model belongs to the technical field of wire rope winding and unwinding devices, specifically relating to an automatic wire rope winding and unwinding device for gantry cranes. Background Technology

[0002] All gantry crane wire ropes have a limited service life. When the wire ropes have been used for a period of time and their wear reaches the replacement standard, they need to be replaced in a timely manner to ensure the safety of gantry crane operations. When replacing a wire rope, it needs to be lowered gradually from a height to the ground. Ground personnel then coil the wire rope into a coil, connect the end of the new wire rope to the traction rope, and finally use the gantry crane's winding mechanism to wind the new wire rope onto it, thus completing the wire rope replacement.

[0003] Because the operators work directly below the old steel wire rope when it is lowered, there is a significant safety hazard. In addition, the steel wire rope itself is heavy, and the operation is physically demanding, resulting in low worker morale and making the work difficult to carry out. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an automatic rope winding and unwinding device for gantry crane wire ropes, thereby solving the technical problem of safety risks associated with the need for workers to wind up old gantry crane wire ropes.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an automatic wire rope winding and unwinding device for a gantry crane, comprising a horizontally set base, two circular storage baskets rotatably connected to the base, the tops of the storage baskets being open, each storage basket having a hook for fixing the end of the wire rope, a drive device for driving the two storage baskets to rotate and a controller for controlling the drive device connected to the base, the base having wire rope guides corresponding to each storage basket, each wire rope guide including a column vertically connected to one side of the base of the corresponding storage basket, a guide rod horizontally connected to the top of the column and extending into the corresponding storage basket, and a slider slidably connected to the guide rod, the slider sliding radially along the corresponding storage basket, and at least one guide hole vertically opened on the slider.

[0006] As a preferred embodiment, a downwardly extending rotating shaft is vertically connected to the center of the outer bottom surface of any of the storage baskets. The lower end of the rotating shaft is inserted into the base and rotatably connected to the base. A passive wheel is connected to the middle of the rotating shaft. The driving device includes a geared motor corresponding to each storage basket. The output shaft end of the geared motor is connected to a driving wheel. The driving wheel is connected to the passive wheel at the bottom of the corresponding storage basket via a belt.

[0007] As a preferred embodiment, a downward-extending rotating shaft is vertically connected to the center of the outer bottom surface of any of the storage baskets. The lower end of the rotating shaft is inserted into the base and rotatably connected to the base. A driven wheel is connected to the middle of the rotating shaft. The driving device is a geared motor. The output shaft end of the geared motor is connected to a driving wheel. The driving wheel is connected to the driven wheel via a belt. External gear rings are respectively provided on the outside of the two storage baskets. The two external gear rings mesh with each other, and the two storage baskets are connected by the external gear rings.

[0008] As a preferred embodiment, the base is also equipped with an electrical control cabinet, which contains a remote control receiving module. The remote control receiving module is used to receive remote control signals and send them to the controller, which controls the drive device to operate according to the remote control signals.

[0009] As a preferred embodiment, a lead screw is arranged parallel to one side of any of the guide rods, with both ends of the lead screw connected to the two ends of the guide rod via supports. The lead screw is rotatably connected to the supports, and the slider is threadedly connected to the lead screw. A guide motor that drives the lead screw to rotate is connected to the column, and the guide motor is electrically connected to the controller and is controlled by the controller.

[0010] As a preferred embodiment, the storage basket includes a circular base plate with multiple upwardly extending support columns evenly distributed circumferentially on the base plate. The tops of all the support columns are connected together by a horizontally arranged connecting ring. The connecting ring is coaxial with the base plate, and the diameter of the connecting ring is larger than the diameter of the base plate. The hook is fixedly connected to the connecting ring.

[0011] As a preferred embodiment, multiple circumferentially distributed support wheels are connected to the base below any storage basket. The support wheels are rotatably connected to the base via wheel seats. The storage basket rests on the multiple support wheels, and the support wheels support the rotation of the storage basket.

[0012] As a preferred embodiment, the column is rotatably connected to the base, and a positioning plate is fixedly connected to the bottom of the column, which is directly opposite the base. The positioning plate has multiple positioning holes evenly distributed around the column. A locking plate is also movably sleeved on the column, located above the positioning plate. The side of the locking plate facing the positioning plate is vertically connected to a locking pin that corresponds to each positioning hole. The locking pins are inserted into the positioning holes one by one. The base has locking holes that correspond to each positioning hole, and the locking pins are inserted into the locking holes one by one.

[0013] The beneficial effects of this utility model are: This utility model uses a drive device to drive the storage basket to rotate, and at the same time uses a wire rope guide to guide the wire rope to automatically coil inside the storage basket, thereby replacing manual winding of the old wire rope and solving the technical problem of safety risks that require workers to wind up the old wire rope of the gantry crane.

[0014] This invention further utilizes an external gear ring to drive and connect two storage baskets, enabling the two storage baskets to operate simultaneously and synchronously, thereby improving work efficiency and reducing manufacturing costs.

[0015] This invention further utilizes a remote control receiving module to receive remote control signals, thereby enabling remote control of the automatic wire rope winding and unwinding device for the gantry crane, further improving safety during use.

[0016] This invention further utilizes a lead screw to drive a slider to slide, thereby controlling the diameter and tightness of the coil when the steel wire is wound.

[0017] This invention further designes the side wall of the storage basket to be hollowed out, so that operators can tie, bundle, and hoist the coiled steel wire rope.

[0018] This invention further improves the stability of each storage basket during rotation by using multiple support wheels.

[0019] This invention further achieves the guide rod's avoidance function by rotatably connecting the column to the base, while the use of a locking disc and multiple locking pins can effectively improve the locking reliability between the column and the base. Attached Figure Description

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a left view of the present invention;

[0022] Figure 2 yes Figure 1 Top view;

[0023] Figure 3 yes Figure 1 A top view of another structure;

[0024] Figure 4 yes Figure 1 Enlarged view of part A in the image;

[0025] Figures 1-4 Components: 1. Base, 2. Storage basket, 201. Base plate, 202. Support column, 203. Connecting ring, 3. Hook, 4. Drive device, 5. Controller, 6. Wire rope guide, 601. Column, 602. Guide rod, 603. Slider, 604. Guide hole, 7. Shaft, 8. Driven wheel, 9. Gear motor, 10. Drive wheel, 11. Belt, 12. External gear ring, 13. Electrical control cabinet, 14. Remote control receiver module, 15. Lead screw, 16. Support, 17. Guide motor, 18. Support wheel, 19. Wheel seat, 20. Positioning plate, 21. Positioning hole, 22. Locking plate, 23. Locking pin, 24. Locking hole. Detailed Implementation

[0026] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figures 1-4 The automatic wire rope retraction and deployment device for the gantry crane shown includes a horizontally positioned base 1. Two circular storage baskets 2 are rotatably connected to the base 1. The tops of the storage baskets 2 are open. Each storage basket 2 is provided with a hook 3 for fixing the end of the wire rope. The base 1 is connected to a drive device 4 for driving the two storage baskets 2 to rotate and a controller 5 for controlling the drive device 4. The base 1 is provided with wire rope guides 6 corresponding to each storage basket 2. Each wire rope guide 6 includes a column 601 vertically connected to one side of the base 1 of the corresponding storage basket 2, a guide rod 602 horizontally connected to the top of the column 601 and extending into the corresponding storage basket 2, and a slider 603 slidably connected to the guide rod 602. The slider 603 slides radially along the corresponding storage basket 2, and at least one guide hole 604 is vertically opened on the slider 603.

[0028] like Figure 1 and Figure 2 As shown, in this embodiment, a downwardly extending rotating shaft 7 is vertically connected to the center of the outer bottom surface of any of the storage baskets 2. The lower end of the rotating shaft 7 is inserted into the base 1 and rotatably connected to the base 1. A passive wheel 8 is connected to the middle of the rotating shaft 7. The driving device 4 includes a reduction motor 9 corresponding to each storage basket 2. The output shaft end of the reduction motor 9 is connected to a driving wheel 10. The driving wheel 10 is connected to the passive wheel 8 at the bottom of the corresponding storage basket 2 through a belt 11.

[0029] To improve ease of operation and prevent operators from approaching the rope winding and unwinding device during the rope winding process, this embodiment further includes an electrical control cabinet 13 on the base 1. The electrical control cabinet 13 contains a remote control receiving module 14, which receives remote control signals and sends them to the controller 5. The controller 5 controls the drive device 4 to operate according to the remote control signals.

[0030] In this embodiment, a lead screw 15 is arranged parallel to one side of any of the guide rods 602. The two ends of the lead screw 15 are connected to the two ends of the guide rod 602 via supports 16, and the lead screw 15 is rotatably connected to the supports 16. The slider 603 is threadedly connected to the lead screw 15. A guide motor 17, which drives the lead screw 15 to rotate, is connected to the column 601. The guide motor 17 is electrically connected to and controlled by the controller 5. The controller 5 can control the rotation of the guide motor 17 to drive the slider 603 to slide along the axial direction of the lead screw 15, guiding the wire rope's storage position or release direction.

[0031] The storage basket 2 described in this embodiment includes a circular base plate 201. Multiple upwardly extending support columns 202 are evenly distributed circumferentially on the base plate 201. The tops of all the support columns 202 are connected together by a horizontally positioned connecting ring 203. The connecting ring 203 is coaxially arranged with the base plate 201, and its diameter is larger than that of the base plate 201. The hook 3 is fixedly connected to the connecting ring 203. This structure of the storage basket 2 facilitates the operator's binding, bundling, and hoisting of the stored wire ropes.

[0032] To improve the rotational stability of the storage basket 2, this embodiment further connects multiple circumferentially distributed support wheels 18 to the base 1 below the storage basket 2. The support wheels 18 are rotatably connected to the base 1 through wheel seats 19. The storage basket 2 rests on the multiple support wheels 18, and the support wheels 18 support the rotation of the storage basket 2.

[0033] like Figure 4 As shown, in this embodiment, the column 601 is rotatably connected to the base 1. A positioning plate 20, which is vertically opposite to the base 1, is fixedly connected to the bottom of the column 601. Multiple positioning holes 21 are evenly distributed around the column 601. A locking plate 22 is also movably fitted onto the column 601, located above the positioning plate 20. A locking pin 23, corresponding to each positioning hole 21, is vertically connected to the side of the locking plate 22 facing the positioning plate 20. The locking pins 23 are inserted into the positioning holes 21. The base 1 has locking holes 24, corresponding to each positioning hole 21, into which the locking pins 23 are inserted. Lifting the locking plate 22 allows all locking pins 23 to simultaneously disengage from the locking holes 24, unlocking the column 601 and the base 1. Then, the column 601 can be rotated, causing the guide rod 602 to shift to the side of the corresponding storage basket 2, avoiding the wire rope hoisting operation.

[0034] As an alternative, such as Figure 1 and Figure 3 As shown, a downward-extending rotating shaft 7 is vertically connected to the center of the outer bottom surface of any of the storage baskets 2. The lower end of the rotating shaft 7 is inserted into the base 1 and rotatably connected to the base 1. A driven wheel 8 is connected to the middle of the rotating shaft 7. The driving device 4 is a geared motor. The output shaft end of the geared motor is connected to a driving wheel 10. The driving wheel 10 is connected to the driven wheel 8 via a belt 11. External gear rings 12 are respectively provided on the outside of the two storage baskets 2. The two external gear rings 12 mesh with each other, and the two storage baskets 2 are connected by transmission through the external gear rings 12. This enables the two storage baskets 2 to operate synchronously, reducing the manufacturing cost of the automatic rope winding and unwinding device for the gantry crane wire rope.

[0035] To prevent the wire rope from being scratched by the guide hole 604, the slider 603 used in this embodiment is made of polyurethane.

[0036] To facilitate the transfer of the automatic wire rope winding and unwinding device for the gantry crane, the base is equipped with a socket 25 that mates with the fork teeth of the forklift.

[0037] The working process of this utility model is as follows: Figures 1-4 The automatic wire rope rewinding device for the gantry crane shown is used when the wire rope needs to be replaced. The operator first coils the new wire rope into a storage basket 2, then uses a forklift to move the device below the gantry crane hook. The hook is removed, and the end of the old wire rope is passed through the guide hole 604 of the wire rope guide 6 corresponding to another storage basket 2 and hung on the hook 3 of that basket. The operator then moves away from the device, and the gantry crane operator starts the drive unit 4 of the automatic wire rope rewinding device while simultaneously lowering the wire rope. The drive unit 4 drives the storage basket 2 to rotate, gradually coiling and storing the old wire rope inside. When approximately three turns of the old wire rope remain on the gantry crane drum, the operator connects the traction rope to the end of the old wire rope, and the gantry crane continues to lower the old wire rope until the traction rope is lowered to a height accessible to the operator. At this point, the gantry crane operator simultaneously stops the gantry crane and the automatic wire rope winding and unwinding device, waiting for the ground operator to remove the traction rope from the end of the old wire rope and connect it to the end of the new wire rope. After receiving the instruction from the ground operator, the gantry crane operator starts the gantry crane to wind the rope, and simultaneously controls the automatic wire rope winding and unwinding device to start, driving the storage basket 2 containing the new wire rope to unwind the rope until the new wire rope has wound three turns on the gantry crane drum. Then, the gantry crane operator stops the gantry crane to wind the rope and the automatic wire rope winding and unwinding device to unwind the rope. After the operator uses the pressure plate to press the end of the new wire rope onto the drum and removes the traction rope, the gantry crane operator resumes the gantry crane to wind the rope and the automatic wire rope winding and unwinding device to unwind the rope until the end of the new wire rope is detached from the automatic wire rope winding and unwinding device. Then, the ground operator connects the hook to the new wire rope, completing the wire rope replacement.

[0038] Throughout the entire operation, ground operators only approach the automatic wire rope retraction and deployment device of the gantry crane when the wire rope is stationary, thus greatly improving the safety of operators during the replacement of the gantry crane wire rope.

[0039] When the gantry crane's automatic wire rope winding and unwinding device is collecting old wire ropes, the controller controls the guide motor 17 to operate according to the winding progress, driving the slider 603 to move radially from near the inner wall of the collection basket 2 towards the center, so that the wound old wire ropes are neatly arranged, making it easier for workers to tie and hoist them later.

[0040] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some of the application examples, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A device for automatically releasing and retracting a steel wire rope for a gantry crane, comprising a horizontally arranged base (1), two circular storage baskets (2) being rotatably connected to the base (1), the tops of the storage baskets (2) being open, a hook (3) for fixing a steel wire rope end being arranged on any of the storage baskets (2), a driving device (4) for driving the two storage baskets (2) to rotate and a controller (5) for controlling the driving device (4) being connected to the base (1), characterized in that: The base (1) is provided with steel wire rope guides (6) corresponding to the storage baskets (2) one by one. Each steel wire rope guide (6) comprises a column (601) vertically connected to the base (1) on one side of the corresponding storage basket (2), a guide rod (602) horizontally connected to the top of the column (601) and extending into the corresponding storage basket (2), and a slider (603) slidably connected to the guide rod (602). The slider (603) slides along the radial direction of the corresponding storage basket (2), and at least one guide hole (604) is vertically opened on the slider (603).

2. The automatic wire rope retracting and releasing device for a door crane according to claim 1 is characterized in that: A rotating shaft (7) extending downward is vertically connected to the center of the outer bottom surface of any of the storage baskets (2); the lower end of the rotating shaft (7) is inserted into the base (1) and is rotatably connected to the base (1); a passive wheel (8) is connected to the middle of the rotating shaft (7); the driving device (4) comprises a reduction motor (9) corresponding to each of the storage baskets (2); an output shaft end of the reduction motor (9) is connected to a driving wheel (10); and the driving wheel (10) is transmission-connected to the passive wheel (8) at the bottom of the corresponding storage basket (2) via a belt (11).

3. The automatic wire rope retracting and releasing device for a door crane according to claim 1 is characterized in that: A rotating shaft (7) extending downward is vertically connected to the center of the outer bottom surface of any of the storage baskets (2); the lower end of the rotating shaft (7) is inserted into the base (1) and is rotatably connected to the base (1); a driven wheel (8) is connected to the middle of the rotating shaft (7); the driving device (4) is a reduction motor; the output shaft end of the reduction motor is connected to a driving wheel (10); the driving wheel (10) is transmission-connected to the driven wheel (8) via a belt (11); external gear rings (12) are respectively provided on the outside of the two storage baskets (2); the two external gear rings (12) are meshed with each other, and the two storage baskets (2) are transmission-connected via the external gear rings (12).

4. The automatic wire rope retracting and releasing device for a door crane according to claim 1 is characterized in that: The base (1) is also provided with an electric control cabinet (13), and a remote control receiving module (14) is provided in the electric control cabinet (13). The remote control receiving module (14) is used to receive a remote control signal and send it to the controller (5). The controller (5) controls the action of the driving device (4) according to the remote control signal.

5. The automatic wire rope retracting and releasing device for a door crane according to claim 1 is characterized in that: A screw rod (15) is arranged parallel to one side of any of the guide rods (602), and two ends of the screw rod (15) are connected to two ends of the guide rod (602) via a support (16). The screw rod (15) is rotatably connected to the support (16). The slider (603) is threadedly connected to the screw rod (15). A guide motor (17) for driving the screw rod (15) to rotate is connected to the column (601), and the guide motor (17) is electrically connected to the controller (5) and is controlled by the controller (5).

6. The automatic wire rope retracting and releasing device for a door crane according to any one of claims 1 to 5, characterized in that: The storage basket (2) comprises a circular bottom plate (201), a plurality of support columns (202) extending upward are evenly distributed circumferentially on the bottom plate (201), the top ends of all the support columns (202) are connected together via a horizontally arranged connecting ring (203), the connecting ring (203) is coaxially arranged with the bottom plate (201), the diameter of the connecting ring (203) is larger than the diameter of the bottom plate (201), and the hook (3) is fixedly connected to the connecting ring (203).

7. The automatic wire rope retracting and releasing device for a gantry crane according to any one of claims 1 to 5, characterized in that: A plurality of circumferentially evenly distributed supporting wheels (18) are connected to the base (1) below any storage basket (2); the supporting wheels (18) are rotatably connected to the base (1) via wheel seats (19); the storage basket (2) is placed on the plurality of supporting wheels (18), and the supporting wheels (18) support the storage basket (2) to rotate.

8. The automatic wire rope retracting and releasing device for a door crane according to any one of claims 1 to 5, characterized in that: The column (601) is rotatably connected to the base (1); a positioning plate (20) is fixedly connected to the bottom of the column (601) and is directly opposite to the base (1) in the upper and lower directions; a plurality of positioning holes (21) are evenly distributed on the positioning plate (20) with the column (601) as the center; a locking plate (22) is movably sleeved on the column (601); the locking plate (22) is located above the positioning plate (20); a locking pin (23) corresponding to the positioning hole (21) is vertically connected to a side of the locking plate (22) facing the positioning plate (20); the locking pin (23) is correspondingly inserted into the positioning hole (21); the base (1) is provided with locking holes (24) correspondingly opposite to the positioning holes (21); the locking pin (23) is correspondingly inserted into the locking hole (24).

Images