CN216471768U

CN216471768U - Automatic lifting appliance for high-temperature steel coil

Info

Publication number: CN216471768U
Application number: CN202123237511.XU
Authority: CN
Inventors: 刘朋
Original assignee: Dalian Xinghang Electromechanical Equipment Co ltd
Current assignee: Dalian Xinghang Electromechanical Equipment Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-10
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses an automatic hoist of high temperature coil of strip, including the hoist main part, the hoist main part includes hanging shaft, lug and clamp, the clamp includes the tong arm, the tong arm is including setting up the claw at the lower extreme, the automatic hoist of high temperature coil of strip is still including the process state detection device who is used for detecting the state of hoist in the hoisting process, process state detection device links to each other with control system, process state detection device is including the book core position detection device that can detect whether the claw descends to the book core position of coil of strip, can detect whether the tong arm presss from both sides the tight detection device that targets in place that presss from both sides tightly, can detect whether the hoist successfully bears the weight of coil of strip and can detect whether the claw is part or all be located the play to rise the safety confirmation device in the coil of strip core. The utility model discloses possessed from descending to the relevant detection function of the full flow that promotes, can cooperate with automatic system, realized that the high temperature coil of strip hangs the automation of getting, guaranteed the high efficiency and the security of jack-up process.

Description

Automatic lifting appliance for high-temperature steel coil

Technical Field

The utility model relates to a hoisting accessory technical field, concretely relates to automatic hoist of high temperature coil of strip.

Background

At present, high-temperature steel coils produced in steel plants are basically lifted by a manual lifting appliance, and the working state and the integral control of the lifting appliance are manually observed and operated. However, with the development of society, automation of production and transportation of high-temperature steel coils is gradually realized in each steel mill, and the prior art cannot meet the requirement of full-flow monitoring of the automatic hoisting process of the steel coils.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the proposition of above problem, and research design high temperature coil of strip automatic lifting device. The utility model discloses a technical means as follows:

the utility model provides an automatic hoist of high temperature coil of strip, includes the hoist main part, the hoist main part includes hanging shaft, lug and clamp, the clamp includes the tong arm, the tong arm is including setting up the claw at the lower extreme, the automatic hoist of high temperature coil of strip is still including the process state detection device who is used for detecting the state of jack-up in-process hoist, process state detection device links to each other with control system, process state detection device is including the core position detection device that can detect whether the claw descends to the core position of coil of strip, can detect whether the tong arm presss from both sides the clamp that tightly targets in place and puts in place detection device, can detect whether the hoist successfully bears the weight of coil of strip and can detect whether the claw partially or the whole lifting safety confirmation device that is located the core of coil.

Furthermore, the core position detection device comprises opposite optical fiber switches arranged at corresponding positions on opposite clamp arms, and the core position detection device is arranged above the clamp claws; the bearing detection device comprises a bearing detection feeler lever which is arranged at the position of the clamp claw and extends out of the upper surface of the clamp claw, and when the bearing detection feeler lever moves towards the interior of the clamp claw under pressure, a detection switch arranged in the clamp arm can be triggered; the clamping in-place detection device comprises a correlation type optical fiber switch, the clamping in-place detection device is vertically correlated, and correlation light rays of the clamping in-place detection device can be blocked by the steel coil when the steel coil is clamped; the lifting safety confirmation device is a reflection-type optical fiber switch arranged on the clamp arm and at a position corresponding to the end part of the clamp claw in a vertical mode.

Furthermore, the detection switch is arranged in the forceps arms, one end of the bearing detection feeler lever, which is positioned in the forceps jaws, is hinged with one end of the connecting rod, the other end of the connecting rod is connected with a spring, one end of the connecting rod is fixed relative to the forceps arms, a trigger part capable of triggering the detection switch is arranged at one end of the connecting rod, which is connected with the spring, the connecting rod is fixed in the forceps arms through a rotating shaft, and the rotating shaft is positioned between two ends of the connecting rod.

Further, the distance between the rotating shaft and the lower end of the bearing detection feeler lever is smaller than the distance between the rotating shaft and the trigger part.

Furthermore, the process state detection device also comprises a ground contact detection device which is a reflection type optical fiber switch with a downward emergent direction and is connected with a control system.

Further, the process state detection device further comprises a lifting appliance opening degree detection device, wherein the lifting appliance opening degree detection device is an absolute value encoder which is arranged at the position of a switching mechanism motor of the lifting appliance and can acquire the number of rotation turns of the motor.

Further, the process state detection device further comprises a weight detection device, and the weight detection device is a weight sensor arranged between the lifting lug and the lifting shaft.

Further, the process state detection device also comprises a steel coil temperature detection device.

Further, the steel coil temperature detection device is a non-contact temperature sensor arranged on the clamp arm, faces the oblique lower side of the inner side of the clamp, and can detect the temperature of the inner wall of the steel coil in the descending process of the lifting appliance.

Furthermore, the control system is arranged in a control box, a refrigerating device is arranged in the control box, and a heat insulation protective layer is arranged at the box body of the control box.

Compared with the prior art, high temperature coil of strip automatic lifting device possess from descending to the relevant detection function of the full flow that promotes, can cooperate with automatic system, realize the automation that high temperature coil of strip hung and got, guarantee the high efficiency and the security of jack-up process.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2, fig. 3 and fig. 4 are schematic views of the working principle of the roll core position detecting device according to the embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a load detection device according to an embodiment of the present invention.

Fig. 6, 7 and 8 are schematic views illustrating the working principle of the clamping in-place detection device according to the embodiment of the present invention.

Fig. 9, 10 and 11 are schematic views illustrating the working principle of the lifting safety confirmation device according to the embodiment of the present invention.

Fig. 12 is a schematic view illustrating an operation principle of the ground contact detecting device according to the embodiment of the present invention.

Fig. 13 is a schematic view of the working principle of the device for detecting the opening degree of a lifting appliance according to the embodiment of the present invention.

Fig. 14 is a schematic structural diagram of a weight detecting device according to an embodiment of the present invention.

Fig. 15 is a side view of fig. 14.

Fig. 16 is a schematic view of the working principle of the steel coil temperature detecting device according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1, an automatic lifting appliance for high-temperature steel coils comprises a lifting appliance main body 1, the lifting appliance main body 1 comprises a lifting shaft 11, a lifting lug 12 and a clamp 13, the clamp 13 comprises a clamp arm 14, the clamp arm 14 comprises a clamp claw 15 arranged at the lower end, the automatic lifting appliance for high-temperature steel coils further comprises a process state detection device for detecting the state of the lifting appliance in the lifting process, the process state detection device is connected with a control system, the process state detection device comprises a coil position detection device 21 which can detect whether the clamp claw 15 descends to the position of a coil 31 of a steel coil 3, a clamping in-place detection device 23 which can detect whether the clamp arm 14 clamps in place, a bearing detection device 22 which can detect whether the lifting appliance successfully bears the steel coil 3, and a lifting safety confirmation device 24 which can detect whether the clamp claw 15 is partially or completely positioned in the coil 31.

Roll up core position detection device 21 is including setting up the correlation type fiber switch in the corresponding position on relative tong arm 14, roll up core position detection device 21 sets up in tong claw 15 slightly above, be close to the position of tong claw 15 for whether detect hoist tong claw 15 aims at coil of strip core 31. As shown in fig. 2, the core position detecting device 21 is turned on when the core is not nipped. As shown in fig. 3, during the lowering of the spreader, the light of the set of switches is blocked by the steel coil. The lifting appliance continues to descend, as shown in fig. 4, when the lifting appliance claw descends to the position of the coil core of the steel coil, the light of the switch is switched on again, which indicates that the lifting appliance claw has already aligned the coil core of the steel coil, and the next clamping action can be performed.

As shown in fig. 5, the load detection device 22 includes a load detection lever 221 extending from the upper surface of the jaw 15, and when the load detection lever 221 is pressed to move toward the inside of the jaw 15, the load detection lever can trigger a detection switch 222 disposed in the jawarm. In a preferred embodiment, the detection switch 222 is disposed in a non-jaw region of the jawarm 14, one end of the load-bearing detection contact rod 221 disposed in the jawarm 15 is hinged to one end of a connecting rod 223, the other end of the connecting rod 223 is connected to a spring 224, one end of the spring 224 is fixed relative to the jawarm, the spring 224 is used for resetting the connecting rod, one end of the connecting rod 223 connected to the spring 224 is provided with a trigger 225 capable of triggering the detection switch, the connecting rod 223 is fixed in the jawarm 14 through a rotating shaft 226, and the rotating shaft 226 is disposed between two ends of the connecting rod 223. When the coil is pressed onto the jaw 15, the load detection lever 221 is pressed into the jaw 15 by the coil, and due to the downward movement of the load detection lever 221, the trigger link 223 rotates around the rotation axis, and the rear return spring 224 is extended, and then the detection switch 222 in the jawarm 14 is triggered to operate. When the steel coil is separated from the claw 15, the bearing detection contact rod 221 loses the upper pressure, the connecting rod 223 is pulled back to the original state by the spring 224 at the rear side, and the connecting rod pushes the bearing detection contact rod 221 back to the original state to restore to the original state. In a preferred embodiment, the distance between the rotating shaft 226 and the lower end of the bearing detection feeler 221 is smaller than the distance between the rotating shaft 226 and the trigger part 225, so that the moving distance of the bearing detection feeler 221 is smaller than the moving distance of the trigger part 225 during the triggering process, thereby preventing the detection switch 222 from being touched by mistake and enhancing the safety and stability of the device. Two tong claws of this embodiment department all is equipped with bears detection device.

The clamping in-place detection device 23 comprises a high-temperature-resistant correlation type optical fiber switch, the clamping in-place detection device can be blocked by the steel coil 3 when clamping the steel coil 3 by correlation in the vertical direction and correlation light of the clamping in-place detection device, and the two correlation type optical fiber switches are respectively installed on the two clamp arms 14 and are installed at the upper parts of the clamp claws 15 and the clamp arms and the vertical corresponding positions of the clamp claws. As shown in fig. 6 and 7, when the steel coil is not clamped, the light of the two sets of clamping-in-position detection devices is switched on. As shown in fig. 8, after the two clamp arms are clamped in place, the light of the two sets of in-place clamping detection devices is blocked by the steel coil, which indicates that the two clamp arms are clamped in place.

As shown in fig. 9 and 10, the lift security device 24 is a reflective fiber switch disposed on the upper portion of the jawarms 14 at a position vertically corresponding to the end of the jawarms 15, with the line of light being slightly inside the edges of the two jawarms. The lifting safety confirming device 24 of the present embodiment includes two reflection-type optical fiber switches provided on the two clamp arms 14, respectively. When the clamp is placed the coil of strip and lifts by crane in idle load, because the positioning error between driving a vehicle and the coil of strip, the clamp probably takes place to swing aloft, and if clamp claw on one side of the clamp continued to promote when the coil of strip rolled up the core was put into to the pincers, the pincers that get into the core at this moment grabbed and can drive coil of strip one side and take place to incline, have the potential safety hazard, as shown in fig. 11, accessible reverberation position change this moment detects, removes this potential safety hazard.

As shown in fig. 12, the process condition sensing means further comprises a ground contact sensing means 25 for sensing the distance of the lower end of the spreader jaw from the ground. The detection device that contacts to earth is the decurrent reflection-type fiber switch of emergent direction, and the detection device that contacts to earth of this embodiment is a reflection-type fiber switch, installs in the below of one of two tong arms, and the hoist is at the in-process that unloaded descends, and when the lower surface of tong claw reached preset distance H, the hoist gave slowly the signal that descends, and the hoist descends by original fast at this moment, switches into slowly descending, makes things convenient for the tong claw to carry out the coil of coil operation to the coil.

As shown in fig. 13, the process state detection device further includes a spreader opening degree detection device 26 for controlling the opening degree of the spreader in real time, the spreader opening degree detection device 26 is an absolute value encoder which is arranged at the opening and closing mechanism motor 16 of the spreader and can collect the number of turns of the motor, and the encoder coupler is connected with the opening and closing mechanism motor 16. The current opening degree is calculated by collecting the number of turns of the motor and combining the distance traveled by the clamp arm when the motor turns one turn.

As shown in fig. 14 and 15, the process state detecting device further includes a weight detecting device 27 for detecting the weight of the steel coil hung by the hanger, and the weight detecting device 27 is a weight sensor disposed between the hanging lug and the hanging shaft. In this embodiment, a set of load cells is mounted on the lifting lugs 12, and then the hanger shaft 11 is fixed in the holes of the load cells. When the hanging shaft 11 is hung on the hanging hook, the upper surface of the hanging shaft 11 and the upper surface of the inner hole of the weighing sensor are mutually extruded, and then the extruded weight is calculated. The empty-load lifting appliance is lifted by the lifting hook, and the weighing of the sensor is set to be zero at the moment. And then the weight of the steel coil lifted by the lifting appliance is the weight of the steel coil.

The process state detection device further comprises a steel coil temperature detection device 28 for detecting the actual temperature of the hung steel coil. In a preferred embodiment, the steel coil temperature detecting device is a non-contact temperature sensor arranged on the clamp arm, and the temperature detecting device faces to the oblique lower part of the inner side of the clamp and can detect the temperature of the inner wall of the steel coil in the descending process of the lifting appliance. In a preferred embodiment, the temperature sensor is mounted in one of the two jawarms. The position with the highest temperature of the steel coil is the middle position of the inner side of the coil core of the steel coil. Before the hanger is designed, the mounting position and the angle of the temperature detection switch are obtained by calculating the size range of a steel coil provided by a user. So that the temperature of the highest position A of the temperature of the steel coil can be measured in the process of lifting the hanger by the hanger, as shown in figure 16.

The control system is arranged in the control box 4, a refrigerating device is arranged in the control box 4, and a heat insulation protective layer is arranged at the box body of the control box to ensure the working requirement of a high-temperature environment.

The working process of the embodiment is as follows:

1. directly over with hoist handling high temperature coil of strip, the control system of front end has transported this time the hoist coil of strip parameter of wanting to hoist control end simultaneously, including the weight of coil of strip, external diameter, width isoparametric, the hoist is on the way of removing to the coil of strip top, and control system has been transferred the tong arm of hoist to suitable opening degree through hoist opening degree detection device automatically. And then quickly descending the lifting appliance, starting to slowly descend the lifting appliance after a slow descending signal is given by a ground contact detection device of the lifting appliance, and explaining that the clamp claws are aligned with the coil core of the steel coil after a signal is given by a coil core position detection device, wherein a control system of the lifting appliance gives a lifting appliance clamping command at the moment, and the lifting appliance automatically clamps.

2. The clamping in-place detection device for clamping the lifting appliance to the lifting appliance gives a signal, and the control system gives a clamping stopping command to indicate that the lifting appliance is clamped in place.

3. The sling slowly rises to the sling load detection device to give a signal, which indicates that the sling has hoisted the steel coil. And then slowly lifting for 50mm, starting to quickly lift, and simultaneously starting to horizontally move the travelling crane to convey the steel coil to the position right above the destination.

4. After the steel coil is lifted by the lifting appliance, the parameters such as the weight, the width, the temperature and the like of the steel coil are automatically compared through the weight detection device, the lifting appliance opening degree detection device and the steel coil temperature detection device, and if the parameters are not consistent with the parameters of the steel coil, the steel coil parameters are input by a front end system, and if the parameters are not consistent with the alarm, the steel coil parameters are automatically compared.

5. After the steel coil is conveyed to the position above the destination by the lifting appliance, the lifting appliance begins to rapidly descend until a signal is given by the detection of touching the ground, the lifting appliance begins to slowly descend until the signal of the bearing detection device is lost, the steel coil is released in place, and the lifting appliance control system automatically opens the clamp arms to a proper opening degree. Then the lifting appliance is quickly lifted, and the next working cycle is started.

6. After the steel coil is conveyed in place by the lifting appliance, the phenomenon that the lifting appliance and a lifting hook of a crane swing together in the no-load lifting process may occur. In the swinging process, one jaw of the lifting appliance can be placed into the coil core of the steel coil again, and at the moment, the lifting appliance can lift the steel coil again by one jaw of the lifting appliance in the no-load lifting process or the lifting turning process is in accident, and whether the jaw of the lifting appliance lifts a foreign matter or not in the no-load lifting process is detected by the lifting safety confirmation device, so that the steel coil is prevented from being lifted or lifted and turned again.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides an automatic hoist of high temperature coil of strip, includes the hoist main part, the hoist main part includes hanging shaft, lug and clamp, clamp includes the tong arm, the tong arm is including setting up at the claw of lower extreme, its characterized in that: the automatic lifting appliance for the high-temperature steel coil further comprises a process state detection device for detecting the state of the lifting appliance in the lifting process, the process state detection device is connected with the control system, and the process state detection device comprises a coil core position detection device which can detect whether the jaw descends to the coil core position of the steel coil, a clamping in-place detection device which can detect whether the clamp arm clamps in place, a bearing detection device which can detect whether the lifting appliance successfully bears the steel coil, and a lifting safety confirmation device which can detect whether the jaw is partially or completely located in the coil core.

2. The automatic high-temperature steel coil hanger according to claim 1, wherein: the roll core position detection device comprises opposite optical fiber switches arranged at corresponding positions on opposite clamp arms, and is arranged above the clamp claws; the bearing detection device comprises a bearing detection feeler lever which is arranged at the position of the clamp claw and extends out of the upper surface of the clamp claw, and when the bearing detection feeler lever moves towards the interior of the clamp claw under pressure, a detection switch arranged in the clamp arm can be triggered; the clamping in-place detection device comprises a correlation type optical fiber switch, the clamping in-place detection device is vertically correlated, and correlation light rays of the clamping in-place detection device can be blocked by the steel coil when the steel coil is clamped; the lifting safety confirmation device is a reflection-type optical fiber switch arranged on the clamp arm and at a position corresponding to the end part of the clamp claw in a vertical mode.

3. The automatic lifting appliance for high-temperature steel coils according to claim 2, characterized in that: the detection switch is arranged in the forceps arms, one end of the bearing detection feeler lever, which is positioned in the forceps jaws, is hinged with one end of the connecting rod, the other end of the connecting rod is connected with a spring, one end of the connecting rod is fixed relative to the forceps arms, a trigger part capable of triggering the detection switch is arranged at one end of the connecting rod, which is connected with the spring, the connecting rod is fixed in the forceps arms through a rotating shaft, and the rotating shaft is positioned between two ends of the connecting rod.

4. The automatic high-temperature steel coil hanger according to claim 3, wherein: the distance between the rotating shaft and the lower end of the bearing detection feeler lever is smaller than the distance between the rotating shaft and the trigger part.

5. The automatic lifting appliance for high-temperature steel coils according to claim 2, characterized in that: the process state detection device also comprises a touchdown detection device which is a reflection type optical fiber switch with a downward emergent direction and is connected with a control system.

6. The automatic high-temperature steel coil hanger according to claim 5, wherein: the process state detection device further comprises a lifting appliance opening degree detection device which is an absolute value encoder arranged at the opening and closing mechanism motor of the lifting appliance and capable of collecting the number of rotation turns of the motor.

7. The automatic high-temperature steel coil hanger according to claim 6, wherein: the process state detection device further comprises a weight detection device, and the weight detection device is a weight sensor arranged between the lifting lug and the lifting shaft.

8. The automatic high-temperature steel coil hanger according to claim 7, wherein: the process state detection device also comprises a steel coil temperature detection device.

9. The automatic high-temperature steel coil hanger according to claim 8, wherein: the steel coil temperature detection device is a non-contact temperature sensor arranged on the clamp arm, faces to the oblique lower side of the inner side of the clamp, and can measure the temperature of the inner wall of the steel coil in the descending process of the lifting appliance.

10. The automatic high-temperature steel coil hanger according to any one of claims 1 to 9, wherein: the control system is arranged in the control box, a refrigerating device is arranged in the control box, and a heat insulation protective layer is arranged at the box body of the control box.