CN216190469U

CN216190469U - Automatic anchoring device for revolving portal crane

Info

Publication number: CN216190469U
Application number: CN202122463363.7U
Authority: CN
Inventors: 李祥; 杨一平; 邹海江; 王海荣
Original assignee: Zhangjiagang Port Group Co ltd
Current assignee: Zhangjiagang Port Group Co ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-04-05
Anticipated expiration: 2031-10-13

Abstract

The utility model relates to a portal crane rotary automatic anchoring device, which comprises a crane fixing part, a crane rotating part and a rotary driver, and also comprises two position sensors fixedly connected with the crane rotating part, and an arc-shaped metal sheet fixedly connected with the crane fixing part, wherein the two position sensors are respectively connected to a PLC of a crane, the crane fixing part is also connected with an anchoring plate, the anchoring plate is provided with an anchoring hole, the crane rotating part is connected with a set of anchoring driver, the driving end of the anchoring driver is connected with an anchoring pin, the anchoring driver can drive the anchoring pin to be inserted into or pulled out of the anchoring hole, the anchoring driver is electrically connected with the PLC and controlled by the PLC, the PLC is also connected with two bicolor signal lamps, the PLC respectively controls the light colors of the two bicolor signal lamps according to signals sent by the two position sensors, and the rotary driver is electrically connected with the PLC, controlled by a PLC. The anchoring device greatly improves the anchoring speed and reduces the number of operators.

Description

Automatic anchoring device for revolving portal crane

Technical Field

The utility model belongs to the technical field of hoisting equipment, and particularly relates to a revolving automatic anchoring device of a portal crane.

Background

According to the requirements stipulated in JT/T90-2020 Port handling machinery wind load calculation and windproof safety requirements, a gantry crane with a safety distance of less than 50 meters needs to be in a normal working state for slewing anchoring in a windproof season, however, because the conventional slewing anchoring system is separated from a crane main control system (comprising slewing, lifting and the like), at least 2 persons are required to cooperate with each other when the slewing mechanism is anchored each time, a driver operates the slewing mechanism to rotate, another person visually observes the relative position of an anchoring pin and an anchoring hole and feeds back the relative position to the driver, the other person or a third person controls the anchoring pin to descend and insert into the anchoring hole to finish anchoring by repeatedly adjusting the slewing angle. Therefore, the whole anchoring process needs a large number of personnel, the operation difficulty is high, the time of the anchoring process is long, the rotary anchoring is often not performed in time for sudden strong wind, great economic loss is easily caused, and serious safety production accidents are possibly caused.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the utility model provides a portal crane gyration automatic anchoring device, the device can automatic alignment anchor round pin and rivet hole to can independently accomplish anchoring counterpoint and anchor that falls by the driver, improve anchoring speed greatly, reduce operating personnel quantity, reduce operating personnel's working strength, improve portal crane's safety in utilization.

In order to solve the technical problems, the utility model adopts the technical scheme that: a portal crane rotary automatic anchoring device comprises a crane fixing part, a crane rotating part which is rotatably connected to the upper end of the crane fixing part, and a rotary driver which drives the crane rotating part to rotate relative to the crane fixing part, and also comprises two position sensors which are fixedly connected to the crane rotating part, and an arc-shaped metal sheet which is fixedly connected to the crane fixing part, wherein the arc-shaped metal sheet extends along the rotating direction of the crane rotating part by taking the rotating center of the crane rotating part as the circle center, the corresponding circle center angle of the arc-shaped metal sheet is less than 180 degrees, the two position sensors can rotate relative to the arc-shaped metal sheet and can simultaneously correspond to the end parts at the two ends of the arc-shaped metal sheet in the rotating process, the two position sensors are respectively connected to a PLC of the crane for sending signals to the PLC, the crane fixing part is also connected with an anchoring plate, the anchor plate is provided with an anchor hole, the rotating part of the crane is connected with a set of anchor drivers, the driving end of the anchor driver is connected with an anchor pin, the axial direction of the anchor pin is parallel to the axial direction of the anchor hole and in the rotating process of the rotating part of the crane, the anchoring pin and the anchoring hole can form a coaxial state, the anchoring driver can drive the anchoring pin to be inserted into or pulled out of the anchoring hole, the anchoring driver is electrically connected with the PLC and controlled by the PLC, the PLC is also connected with the two bicolor signal lamps, the PLC respectively controls the light colors of the two bicolor signal lamps according to the signals sent by the two position sensors, the rotary driver is electrically connected with the PLC and controlled by the PLC, the PLC is further electrically connected with a left-turn switch, a right-turn switch and an anchoring switch, the left-turn switch and the right-turn switch are used for sending signals to the PLC to control the rotary driver to turn left or turn right, and the anchoring switch is used for sending signals to the PLC to control the anchoring driver to work.

As a preferred scheme, the bottom in anchoring hole is provided with limit switch down, limit switch and PLC electric connection down, to PLC send signal, PLC still is connected with an anchoring state pilot lamp, when the anchor pin inserts in the anchoring hole and triggers limit switch down and send signal to PLC, PLC control anchoring state pilot lamp lights and shows the light colour that the anchoring targets in place.

As a preferred scheme, the anchoring driver comprises a worm gear lead screw jack, a brake motor for driving a lead screw of the worm gear lead screw jack to lift, the worm gear lead screw jack is vertically arranged, a shell of the worm gear lead screw jack is fixedly connected with a rotating part of the crane, the lead screw of the worm gear lead screw jack is vertically arranged, the lower end of the lead screw is connected with the upper end of an anchoring pin, the lifting of the lead screw drives the anchoring pin to lift, the top end of the lead screw is connected with a limit nut, two upper limit switches matched with the limit nut are arranged on the shell of the worm gear lead screw jack, the two upper limit switches are respectively electrically connected with the PLC and send signals to the PLC, the two upper limit switches are vertically arranged along the axial direction of the lead screw, the PLC is electrically connected with the brake motor, and the action of the brake motor is controlled.

As a preferred scheme, the lower end of the screw rod is connected with the top end of an anchoring pin through a chain, the rotating part of the crane is further connected with a guide pipe, the anchoring pin is inserted in the guide pipe in a sliding mode, and the guide pipe is located above the anchoring hole.

As a preferred scheme, the brake motor is a normally closed electromagnetic brake motor, the worm wheel screw jack is provided with a hand wheel, and the lifting of the screw rod can be manually controlled through the hand wheel.

The utility model has the beneficial effects that: according to the utility model, the arc-shaped metal sheet is arranged on the crane fixing part, the two position sensors matched with the arc-shaped metal sheet are arranged on the crane rotating part, and the two position sensors are used for detecting the position of the crane rotating part relative to the crane fixing part, so that the anchoring pin and the anchoring hole are accurately and quickly aligned, no other operators need to monitor on site, meanwhile, the anchoring driver is connected into the PLC and is controlled through the anchoring switch, so that the whole process of rotary anchoring of the crane can be quickly and accurately completed only by the operation of a driver in a cab, the anchoring speed is greatly improved, the number of the operators is reduced, the working intensity of the operators is reduced, and the use safety of the portal crane is improved.

The utility model further sets a lower limit switch at the bottom of the anchoring hole and feeds back anchoring state information to a driver through the anchoring state indicating lamp, so that the driver can intuitively know the rotary anchoring result of the crane in a cab.

The utility model further adopts the matching of the turbolead screw jack and the automatic motor as an anchoring driver, thereby effectively improving the stability of the anchoring pin in a non-anchoring state and avoiding the anchoring pin from automatically falling off due to vibration in the action process of the crane.

The utility model further adopts the chain to connect the anchoring pin and the lower end of the screw rod, thus avoiding the damage to the obstacle when the bottom of the anchoring pin is blocked, improving the use safety of the automatic anchoring device, simultaneously, restricting the anchoring pin by the guide tube, avoiding the swinging of the anchoring pin and ensuring the vertical lifting of the anchoring pin, improving the alignment accuracy of the anchoring pin and the rivet hole, and ensuring the accurate insertion of the anchoring pin into the anchoring hole.

The utility model further adopts a normally closed electromagnetic brake motor as an automatic motor, and can ensure the stability of the anchoring pin in a non-anchoring state. Meanwhile, in order to correspond to the condition of sudden power failure, the normally closed electromagnetic brake motor is provided with a manual brake release function, the brake state of the brake motor can be manually released under necessary conditions, and meanwhile, a hand wheel is used for driving the screw rod to lift, so that the manual anchor falling function under a special state is realized.

Drawings

The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings, in which:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is an electrical control schematic of the present invention;

in FIGS. 1 to 3: 1. the device comprises a crane fixing part, 2, a crane rotating part, 3, a rotary driver, 4, a position sensor, 5, an arc-shaped metal sheet, 6, a PLC, 7, an anchoring plate, 8, an anchoring hole, 9, an anchoring driver, 901, a turbine screw rod jack, 901a, a screw rod, 901b, a hand wheel, 10, an anchoring pin, 11, a double-color signal lamp, 12, a left-turn switch, 13, a right-turn switch, 14, an anchoring switch, 15, a lower limit switch, 16, an anchoring state indicator lamp, 17, a limit nut, 18, an upper limit switch, 19, a chain, 20 and a guide pipe.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, a portal crane rotation automatic anchoring device includes a crane fixing portion 1, a crane rotation portion 2 rotatably connected to the upper end of the crane fixing portion, and a rotation driver 3 for driving the crane rotation portion 2 to rotate relative to the crane fixing portion 1, the crane fixing portion 1 generally includes a cylinder of a crane and a slewing bearing outer gear ring fixedly connected to the cylinder, the crane rotation portion generally includes a turntable, a rotation support inner ring fixedly connected to the bottom of the turntable, and a plurality of components connected to the turntable and rotating synchronously with the turntable, including the rotation driver 3. Slewing bearing's inner circle and outer ring gear rotate through a large amount of rollers and connect, slewing driver 3's output shaft end downwardly extending to the slewing bearing outer ring gear outside, slewing driver 3's output shaft end is connected with the drive gear with slewing bearing outer ring gear meshing, when slewing driver 3 rotated, drive gear and rotate, drive gear will drive hoist rotation portion 2 and rotate for hoist fixed part 1, slewing driver 3's direction of rotation has decided hoist rotation portion 2's direction of rotation. In the embodiment, two position sensors 4 are connected to the crane rotating part 2, an arc-shaped metal sheet 5 is connected to the crane fixing part 1, the arc-shaped metal sheet 5 extends along the rotating direction of the crane rotating part 2 with the rotating center of the crane rotating part 2 as the center of circle, the corresponding central angle of the arc-shaped metal sheet 5 is less than 180 degrees, the two position sensors 4 can rotate relative to the arc-shaped metal sheet 5 along with the crane rotating part 2, and can realize that the two position sensors 4 simultaneously correspond to the end parts at the two ends of the arc-shaped metal sheet 5 one by one in the rotating process, the two position sensors 4 are respectively connected to a PLC6 of the crane for sending signals to a PLC6, as shown in FIG. 2, the crane fixing part 1 is further connected with an anchoring plate 7, anchoring holes 8 are formed in the anchoring plate 7, as shown in FIG. 1, a set of anchoring drivers 9 is connected to the crane rotating part 2, the driving end of the anchor driver 9 is connected with an anchor pin 10, the axial direction of the anchor pin 10 is parallel to the axial direction of the anchor hole 8, in the rotating process of the crane rotating part 2, the anchor pin 10 and the anchor hole 8 form a coaxial state, the anchor driver 9 can drive the anchor pin 10 to be inserted into or pulled out of the anchor hole 8, the anchor driver 9 is electrically connected with the PLC6 and controlled by the PLC6, the PLC6 is further connected with the two bicolor signal lamps 11, and the PLC respectively controls the light colors of the two bicolor signal lamps 11 according to signals sent by the two position sensors 4. The rotary driver 3 is electrically connected with a PLC6 and controlled by a PLC6, the PLC6 is also electrically connected with a left-turn switch 12, a right-turn switch 13 and an anchor switch 14 for sending signals to the PLC6, the left-turn switch 12 and the right-turn switch 13 are used for sending signals to the PLC6 to control the rotary driver 3 to turn left or right, the anchor switch 14 is used for sending signals to the PLC6 to control the anchor driver 9 to work, as shown in fig. 3, the anchor switch 14 adopted in the utility model is a single-pole double-throw switch. In actual production, the left-turn switch 12, the right-turn switch 13 and the anchor switch 14 are all installed in the cab of the crane.

In this embodiment, the anchor driver 9 includes a worm gear screw jack 901, and a brake motor 902 for driving a lead screw 901a of the worm gear screw jack 901 to ascend and descend, the worm gear screw jack 901 is vertically disposed, a housing of the worm gear screw jack 901 is fixedly connected to the crane rotating part 2, the lead screw 901a of the worm gear screw jack 901 is vertically disposed, a lower end of the lead screw 901a is a driving end of the anchor driver 9, the lower end of the lead screw 901a is connected to an upper end of the anchor pin 10, the ascent and descent of the lead screw 901a drives the anchor pin 10 to ascend and descend, a limit nut 17 is connected to a top end of the lead screw 901a, two upper limit switches 18 matched with the limit nut 17 are disposed on the housing of the worm gear screw jack 901, the two upper limit switches 18 are respectively electrically connected to the PLC6 and send signals to the PLC6, and the two upper limit switches 18 are arranged up and down along an axial direction of the lead screw 901 a. The PLC6 is electrically connected to the brake motor 902 and controls the operation of the brake motor 902.

In actual production, the anchoring driver 9 may also be an electro-hydraulic push rod, an electric push rod, a hydraulic oil cylinder, a rack, a winch, or the like.

As shown in fig. 1, in order to avoid the anchoring pin 10 from damaging the stopper below the anchoring pin, the lower end of the screw rod 901a in this embodiment is connected to the top end of the anchoring pin 10 through a chain 19, the chain 19 adopts a G80 galvanized hoisting chain, the overall strength meets the equal strength requirement, the length of the chain is cut according to the actual free position on the spot, a guide pipe 20 is further connected to the crane rotating part 2, the anchoring pin 10 is inserted into the guide pipe 20 in a sliding manner, and the guide pipe 20 is located above the anchoring hole 8.

The brake motor 902 used for driving the turbo screw jack 901 in this embodiment is a normally closed electromagnetic brake motor, and the turbo screw jack 9 is provided with a handwheel 901b, and the lifting of the screw 901a can be manually controlled by the handwheel 901 b.

As shown in fig. 2, in the present embodiment, a lower limit switch 15 is disposed at the bottom of the anchor hole 8, the lower limit switch 15 is electrically connected to the PLC6 and sends a signal to the PLC6, the PLC6 is further connected to an anchor status indicator lamp 16, and when the anchor pin 10 is inserted into the anchor hole 8 and triggers the lower limit switch 15 to send a signal to the PLC6, the PLC6 controls the anchor status indicator lamp 16 to light up to indicate the color of the light in which the anchor is located.

The working process of the utility model is as follows: as shown in fig. 1 to 3, after receiving a request for anchoring the crane rotation, a driver observes two-color signal lamps, and if the two-color signal lamps are red, sends a signal for controlling the rotation driver 3 to turn left or right to the PLC6 through the left-turn switch 12 or the right-turn switch 13, the PLC6 receives the signal and controls the rotation driver 3 to perform left-turn or right-turn action to drive the crane rotation part 2 to turn left or right, the crane rotation part 2 drives the two position sensors 3 to rotate synchronously, one of the position sensors 3 will be opposite to the arc-shaped metal sheet 5 in the rotation process, at this time, the PLC6 sends a signal to the PLC6, after receiving the signal, the PLC6 turns the light of the corresponding two-color signal lamp 11 from red to green, and the driver continues to control the crane rotation part to rotate along the original direction until the two-color signal lamps 11 are green, indicating that the anchoring pin 10 is aligned above and below the anchoring hole 8.

When the position of the crane rotating part 2 is maintained, an anchor dropping command is sent to the PLC6 through the anchor switch 14, after the PLC6 receives the command, the PLC controls the brake motor 902 to operate, the screw rod 901a of the turboscrew jack 901 moves downwards, the anchor pin 10 hung at the lower end of the screw rod 901a slides downwards along the guide pipe 20 under the action of gravity and is gradually inserted into the anchor hole 8, and when the anchor pin 10 is inserted into the bottom of the anchor hole 8 and triggers the lower limit switch 15 to send a signal to the PLC6, the PLC6 controls the anchor state indicator lamp 16 to light a light color indicating that the anchor is in place, such as green, and at the moment, the PLC6 controls the brake motor 902 to continuously drive the screw rod 901a to descend so as to avoid the anchor pin 10 from damaging the lower limit switch 15.

In the process that the anchor pin 10 descends, the situation that the anchor pin 10 and the anchor hole 8 are dislocated exists, at this time, the anchor pin 10 cannot trigger the lower limit switch 15, the driver can continuously control the brake motor 902 to drive the screw rod 901a to descend, at this time, when the screw rod 901a descends to a position where the limit nut 17 is opposite to the upper limit switch 18 located below, the upper limit switch 18 located below sends a signal to the PLC6, and after receiving the signal, the PLC6 can control the anchor state indicator lamp to emit a light color indicating that the anchor is abnormal, such as yellow, and simultaneously limit the brake motor 902 to continuously drive the screw rod 901a to descend, so that the screw rod 901a is prevented from being separated from the shell of the turboscrew rod jack 9.

When the anchor needs to be lifted, a driver sends an anchor lifting instruction to the PLC6 through the anchor switch 14, after the PLC6 receives the anchor lifting instruction, the brake motor 902 is controlled to reversely act, the screw 901a of the turboscrew jack 901 moves upwards, the anchor pin 10 hung at the lower end of the screw 901a slowly moves upwards, the anchor pin is firstly separated from the detection interval of the lower limit switch 15, and at the moment, the anchor state indicator lamp 16 is restored to the light color which is not anchored in place, such as red. The screw 901a moves upwards continuously to drive the anchor pin 10 to be completely separated from the anchor plate 7 until the limit nut is opposite to the upper limit switch 18 positioned above, the upper limit switch 18 positioned above sends a signal to the PLC6, the PLC6 stops the control of the brake motor 902 after receiving the signal, the brake motor 902 turns into a self-locking state after losing power, and the anchor pin 10 is stably suspended in the guide tube 20. At this time, the crane fixing part 1 and the crane rotating part 2 can rotate relatively to perform production operation.

There is a special state, namely after the driver receives the requirement of anchoring the crane rotation, observe two double-color signal lamps 11, wherein one double-color signal lamp 11 is green, another is red, it means that the position sensor 4 corresponding to the double-color signal lamp 11 displaying green is just right opposite to the arc sheet metal 5, and another is located outside the arc sheet metal 5, at this moment, the rotation direction of the crane rotation part 2 can be judged according to the relative position of the two position sensors 4, so as to rotate another position sensor 4 located outside the arc sheet metal 5 to be right opposite to the arc sheet metal 5, and the anchoring efficiency is improved.

The above embodiments are merely illustrative of the principles and effects of the present invention, and the practical embodiments thereof, and are not intended to limit the present invention; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.

Claims

1. A portal crane rotary automatic anchoring device comprises a crane fixing part (1), a crane rotating part (2) rotatably connected to the upper end of the crane fixing part, and a rotary driver (3) for driving the crane rotating part (2) to rotate relative to the crane fixing part (1), and is characterized by further comprising two position sensors (4) fixedly connected to the crane rotating part (2), and an arc-shaped metal sheet (5) fixedly connected to the crane fixing part (1), wherein the arc-shaped metal sheet (5) takes the rotation center of the crane rotating part (2) as the circle center and extends along the rotation direction of the crane rotating part (2), the corresponding center angle of the arc-shaped metal sheet (5) is less than 180 degrees, the two position sensors (4) can rotate relative to the arc-shaped metal sheet (5) and can simultaneously correspond to the end parts at two ends of the arc-shaped metal sheet (5) in the rotating process, the two position sensors (4) are respectively connected to a PLC (6) of the crane and used for sending signals to the PLC (6), the crane fixing part (1) is further connected with an anchoring plate (7), the anchoring plate (7) is provided with an anchoring hole (8), the crane rotating part (2) is connected with a set of anchoring driver (9), the driving end of the anchoring driver (9) is connected with an anchoring pin (10), the axial direction of the anchoring pin (10) is parallel to the axial direction of the anchoring hole (8) and in the rotating process of the crane rotating part (2), the anchoring pin (10) and the anchoring hole (8) can form a coaxial state, the anchoring driver (9) can drive the anchoring pin (10) to be inserted into or pulled out of the anchoring hole (8), the anchoring driver (9) is electrically connected with the PLC (6) and controlled by the PLC (6), and the PLC (6) is further connected with two double-color signal lamps (11), PLC controls the light colour of two double-colored signal lamps (11) respectively according to the signal that two position sensor (4) sent, gyration driver (3) and PLC (6) electric connection are controlled by PLC (6), and last still electric connection of PLC (6) has left turn switch (12) that is used for sending the signal to PLC (6), right turn switch (13) and anchoring switch (14), and left turn switch (12), right turn switch (13) are used for sending signal in order to control gyration driver (3) left turn or the right turn to PLC (6), and anchoring switch (14) are used for sending signal in order to control anchoring driver (9) work to PLC (6).

2. The revolving automatic anchoring device of the gantry crane according to claim 1, wherein the bottom of the anchoring hole (8) is provided with a lower limit switch (15), the lower limit switch (15) is electrically connected with the PLC (6) and sends a signal to the PLC (6), the PLC (6) is further connected with an anchoring state indicator lamp (16), and when the anchoring pin (10) is inserted into the anchoring hole (8) and triggers the lower limit switch (15) to send a signal to the PLC (6), the PLC (6) controls the anchoring state indicator lamp (16) to light up to show the light color of the anchoring in place.

3. The revolving automatic anchoring device of the gantry crane according to claim 1, wherein the anchoring driver (9) comprises a worm gear screw jack (901) and a brake motor (902) for driving a screw rod (901 a) of the worm gear screw jack (901) to ascend and descend, the worm gear screw jack (901) is vertically arranged, a housing of the worm gear screw jack (901) is fixedly connected with the crane rotating part (2), the screw rod (901 a) of the worm gear screw jack (901) is vertically arranged, the lower end of the screw rod (901 a) is connected with the upper end of the anchoring pin (10), the ascending and descending of the screw rod (901 a) drives the anchoring pin (10) to ascend and descend, the top end of the screw rod (901 a) is connected with a limit nut (17), two upper limit switches (18) matched with the limit nut (17) are arranged on the housing of the worm gear screw jack (901), and the two upper limit switches (18) are respectively and electrically connected with the PLC (6), The signal is sent to the PLC (6), the two upper limit switches (18) are arranged up and down along the axial direction of the screw rod (901 a), and the PLC (6) is electrically connected with the brake motor (902) to control the action of the brake motor (902).

4. The revolving automatic anchoring device of the portal crane according to claim 3, wherein the lower end of the screw rod (901 a) is connected with the top end of the anchoring pin (10) through a chain (19), the crane rotating part (2) is further connected with a guide tube (20), the anchoring pin (10) is inserted in the guide tube (20) in a sliding manner, and the guide tube (20) is positioned above the anchoring hole (8).

5. The revolving automatic anchoring device of the gantry crane according to claim 3, wherein the braking motor (902) is a normally closed electromagnetic brake motor, the worm screw jack (901) is provided with a hand wheel (901 b), and the lifting of the screw (901 a) can be manually controlled by the hand wheel (901 b).