A head sheave positioning system for long material hoisting

Abstract

The application discloses a crown block positioning system for long material hoisting and relates to the technical field of crown block positioning. The crown block positioning system for long material hoisting is characterized in that the side of the object to be hoisted is provided with a mobile positioning module, the upper side of the object to be hoisted is provided with a crown block hoisting mechanism, the top surface of the mobile positioning module is provided with an infrared emitter and a proximity switch, the crown block hoisting mechanism comprises a hoisting beam, the bottom of the hoisting beam is provided with an electromagnetic suction disc, the electromagnetic suction disc is used for adsorbing the object to be hoisted, the length of the hoisting beam is greater than the length of the object to be hoisted, and the end of the bottom surface of the hoisting beam is provided with an infrared receiver matched with the infrared emitter. The crown block positioning system for long material hoisting indirectly positions the long material of the casting blank by means of the mobile positioning module, the mobile positioning module is used to find the long material of the casting blank first, then the crown block is moved to find the mobile positioning module, and thus the efficient positioning of the long material of the casting blank is realized.

Description

Technical Field

[0001] This invention relates to the field of overhead crane positioning technology, specifically to an overhead crane positioning system for lifting long materials. Background Technology

[0002] During operation, the lifting assembly is suspended below the overhead crane. After the crane stops moving, the lifting assembly may swing due to inertia. If the swing position is unfavorable, activating the electromagnetic chuck to lift long cast billets can easily lead to a dangerous "skewed lifting" situation. Furthermore, the cast billets may be recently produced and at a high temperature, making them more prone to detaching from the electromagnetic chuck under "skewed lifting" conditions, further increasing the risk of danger.

[0003] Furthermore, existing positioning methods using visual algorithms are too complex and require significant modifications to the overhead crane system, making them difficult to widely apply and promote.

[0004] In the prior art, such as the utility model patent with publication number CN203877761U, a factory overhead crane with an automatic positioning device is disclosed. In this method, infrared transceivers are installed on the crane and the object to be lifted respectively to achieve the positioning of the crane on the object to be lifted. However, due to the high temperature of long billets and the large number of long billets, it is impossible to install infrared positioning devices on each long billet individually.

[0005] In the prior art, such as the invention patent CN112093661A for an electric single-girder crane, an infrared vertical marking method is used to locate the landing point of the object to be lifted, thereby preventing the object to be lifted from colliding with other equipment due to "skewed lifting". However, it is not applicable to the occurrence of "skewed lifting" caused by the relative distance between the position of the crane and the object to be lifted being too large before lifting.

[0006] Existing technologies, such as CN103523675A-Automatic Yard Operation Control System and Automatic Loading and Unloading Method for Rail-Mounted Cranes, use positioning devices to position containers before lifting. However, these positioning devices are installed on the crane and move with it, essentially still representing direct positioning. Long billet castings are not suitable for mounting positioning devices on them.

[0007] Therefore, this invention proposes an indirect positioning method. Summary of the Invention

[0008] (a) Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this invention provides a crane positioning system for lifting long materials, solving the following technical problems:

[0010] 1. Existing technologies lack efficient positioning methods for long product castings;

[0011] 2. Long product billets that have just been produced have a high temperature, and since there are many long product billets, it is not easy to set up positioning devices on them.

[0012] (II) Technical Solution

[0013] To achieve the above objectives, the present invention provides the following technical solution: a crane positioning system for lifting long materials, used for positioning the object to be lifted and the crane lifting mechanism. A movable positioning module is provided on the side of the object to be lifted, and the crane lifting mechanism is provided above the object. An infrared transmitter and a proximity switch are provided on the top surface of the movable positioning module. The crane lifting mechanism includes a lifting beam, and an electromagnetic chuck is provided at the bottom of the lifting beam for adsorbing the object to be lifted. The length of the lifting beam is greater than the length of the object to be lifted, and an infrared receiver cooperating with the infrared transmitter is provided at the end of the bottom surface of the lifting beam.

[0014] It includes a controller and an electromagnetic chuck controller. The infrared transmitter, infrared receiver, and proximity switch are all electrically connected to the controller, and the electromagnetic chuck controller is electrically connected to the electromagnetic chuck.

[0015] When the proximity switch approaches the object to be lifted, the moving positioning module stops moving, and the controller can activate the infrared transmitter to send a signal.

[0016] When the infrared receiver receives the signal from the infrared transmitter, the controller can turn on the power to the electromagnetic chuck controller, thereby enabling the electromagnetic chuck controller to control the electromagnetic chuck.

[0017] Preferably, the infrared light emitted by the infrared emitter is cone-shaped.

[0018] Preferably, after the infrared receiver has continuously received data from the infrared transmitter for time A, the controller can turn on the power supply of the electromagnetic chuck controller.

[0019] Preferably, the mobile positioning module is equipped with a positioning indicator light, which is electrically connected to the controller. When the proximity switch approaches the object to be lifted, the controller activates the positioning indicator light.

[0020] Preferably, the lifting beam is equipped with a signal indicator light, which is electrically connected to the controller. When the infrared receiver receives a signal from the infrared transmitter, the controller activates the signal indicator light.

[0021] (III) Beneficial Effects

[0022] This invention provides a crane positioning system for lifting long materials. It has the following advantages:

[0023] (1) The overhead crane positioning system for lifting long products adopts the method of using a moving positioning module to indirectly position the long product of the casting billet. First, the moving positioning module is used to find the long product of the casting billet, and then the overhead crane is moved to find the moving positioning module, thereby realizing the efficient positioning of the long product of the casting billet.

[0024] (2) The crane positioning system for lifting long products sets the infrared transmitter and infrared receiver at the top of the moving positioning module and the bottom end of the lifting beam, respectively, and selects a lifting beam with a length greater than that of the long product casting. This can effectively perform indirect infrared positioning of long product castings with high temperature, thereby improving the accuracy and efficiency of positioning. Attached Figure Description

[0025] Figure 1 This is a top view of the structure of the present invention;

[0026] Figure 2 This is a front view of the structure of the present invention;

[0027] Figure 3 This is a top view of the overhead crane lifting mechanism of the present invention;

[0028] Figure 4 This is a bottom view of the overhead crane lifting mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the control system of the present invention.

[0030] In the diagram: 1. Placement platform; 2. Long billet; 3. Track; 4. Motion positioning module; 41. Infrared transmitter; 42. Proximity switch; 43. Motion component; 44. Positioning indicator light; 5. Lifting beam; 51. Infrared receiver; 52. Electromagnetic chuck; 53. Signal indicator light; 54. Pulley block; 6. Controller; 7. Electromagnetic chuck controller. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example:

[0033] A crane positioning system for lifting long materials is provided for positioning the object to be lifted between the crane and the crane lifting mechanism. A movable positioning module 4 and a track 3 are provided on the side of the object to be lifted. The movable positioning module 4 moves on the track 3 via a movable component 43. The crane lifting mechanism is provided above the object to be lifted. An infrared transmitter 41 and a proximity switch 42 are provided on the top surface of the movable positioning module 4. The crane lifting mechanism includes a lifting beam 5. An electromagnetic chuck 52 is provided at the bottom of the lifting beam 5 for adsorbing the object to be lifted. The length of the lifting beam 5 is greater than the length of the object to be lifted. An infrared receiver 51 that cooperates with the infrared transmitter 41 is provided at the bottom end of the lifting beam 5.

[0034] The system includes a controller 6 and an electromagnetic chuck controller 7. The infrared transmitter 41, infrared receiver 51, proximity switch 42, and moving component 43 are all electrically connected to the controller 6, and the electromagnetic chuck controller 7 is electrically connected to the electromagnetic chuck 52.

[0035] When the proximity switch 42 approaches the object to be lifted, the positioning module 4 stops moving, and the controller 6 can activate the infrared transmitter 41 to send a signal.

[0036] When the infrared receiver 51 receives the signal from the infrared transmitter 41, the controller 6 can turn on the power supply of the electromagnetic chuck controller 7, thereby enabling the electromagnetic chuck controller 7 to control the electromagnetic chuck 52.

[0037] in:

[0038] In this embodiment, in order to facilitate the infrared receiver 51 to receive the signal from the infrared transmitter 41, the infrared transmitter 41 emits vertically upward and cone-shaped infrared light.

[0039] In order to reduce the swing amplitude of the overhead crane lifting mechanism, the controller 6 can be programmed to turn on the power of the electromagnetic chuck controller 7 after the infrared receiver 51 has continuously received infrared transmitter 41 for a certain period of time. The specific time can be determined by those skilled in the art based on the relationship between the swing time and the swing amplitude of the overhead crane lifting mechanism.

[0040] To notify the crane operator of successful positioning, the mobile positioning module 4 is equipped with a positioning indicator light 44. The positioning indicator light 44 can be optionally positioned on the top of the mobile positioning module 4. The positioning indicator light 44 is electrically connected to the controller 6. When the proximity switch 42 approaches the object to be lifted, the controller 6 activates the positioning indicator light 44. When the crane operator observes the positioning indicator light 44 illuminated, it indicates that the mobile positioning module 4 has located a long billet 2, and the crane operator can move the crane towards the long billet 2.

[0041] To alert the crane operator that the infrared receiver 51 has received a signal from the infrared transmitter 41, a signal indicator light 53 is installed on the lifting beam 5. The signal indicator light 53 is typically located on the top surface of the lifting beam 5 and is electrically connected to the controller 6. When the infrared receiver 51 receives a signal from the infrared transmitter 41, the controller 6 activates the signal indicator light 53. When the crane operator moves the crane lifting mechanism directly above the long billet 2 positioned by the moving positioning module 4, the infrared receiver 51 receives the signal from the infrared transmitter 41, and the signal indicator light 53 illuminates simultaneously. This feature, integrated into the controller 6's program, allows the controller 6 to power on the electromagnetic chuck controller 7 after the infrared receiver 51 has continuously received the signal from the infrared transmitter 41 for a certain period. The signal indicator light 53 must also illuminate for a certain period before the controller 6 can power on the electromagnetic chuck controller 7.

[0042] It should be noted that in the description of the invention, the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the description of the structure of the invention shown in the accompanying drawings. They are only for the convenience of describing the invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0043] Furthermore, since this invention employs a controller-based control method, it inevitably requires the use of computer program algorithms. However, the computer algorithms used in the prior art to trigger the start of another structure or device through a certain structure or device are existing computer program algorithms. The problem to be solved by this invention is unrelated to computer program algorithms; it simply applies existing computer program algorithms, so it will not be elaborated upon further.

[0044] The terms "first" and "second" in this technical solution are merely designations for corresponding structures that are identical or similar, or that perform similar functions. They do not represent an arrangement of the importance of these structures, nor do they imply any ranking, comparison of size, or other meaning.

[0045] Furthermore, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two structures. Those skilled in the art can understand the specific meaning of the above terms in this invention by considering the overall concept of the invention and the specific context of the solution.

Claims

1. A crown positioning system for long material hoisting, used for positioning between the object to be hoisted and the crown hoisting mechanism, the side of the object to be hoisted is provided with a mobile positioning module (4), and the upper side of the object to be hoisted is provided with a crown hoisting mechanism, characterized in that: The top surface of the mobile positioning module (4) is provided with an infrared emitter (41) and a proximity switch (42), the crown block hoisting mechanism comprises a hoisting beam (5), the bottom of the hoisting beam (5) is provided with an electromagnetic suction cup (52) for adsorbing the object to be hoisted, the length of the hoisting beam (5) is greater than the length of the object to be hoisted, and the end of the bottom surface of the hoisting beam (5) is provided with an infrared receiver (51) matched with the infrared emitter (41); The controller (6) and the electromagnetic suction cup controller (7) are included, the infrared emitter (41), the infrared receiver (51) and the proximity switch (42) are electrically connected with the controller (6), and the electromagnetic suction cup controller (7) is electrically connected with the electromagnetic suction cup (52); When the proximity switch (42) is close to the object to be hoisted, the mobile positioning module (4) stops moving, and the controller (6) can start the infrared emitter (41) to emit a signal; When the infrared receiver (51) receives the signal of the infrared emitter (41), the controller (6) can turn on the power supply of the electromagnetic suction cup controller (7), so that the electromagnetic suction cup controller (7) controls the electromagnetic suction cup (52).

2. The system of claim 1, wherein: The infrared light emitted by the infrared emitter (41) is conical.

3. The system of claim 1, wherein: After the infrared receiver (51) continuously receives the infrared emitter (41) for a period of time A, the controller (6) can turn on the power supply of the electromagnetic suction cup controller (7).

4. The system of claim 1, wherein: The mobile positioning module (4) is provided with a positioning indicator light (44), the positioning indicator light (44) is electrically connected with the controller (6), and when the proximity switch (42) is close to the object to be hoisted, the controller (6) starts the positioning indicator light (44).

5. The system of claim 1, wherein: The hoisting beam (5) is provided with a signal indicator light (53), the signal indicator light (53) is electrically connected with the controller (6), and when the infrared receiver (51) receives the signal emitted by the infrared emitter (41), the controller (6) starts the signal indicator light (53).

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