Crane rotating mechanism protection system

Abstract

The invention relates to the technical field of crane safety protection, in particular to a crane rotating mechanism protection system. The crane rotating mechanism protection system comprises a first coupler, a second coupler, a detection assembly and a control module. The first coupler is arranged at the shaft end of a motor of the crane rotation driving system. The second coupler is arranged at the shaft end of a speed reducer of the crane rotation driving system. The first coupler and the second coupler are connected and used for transmitting torque, and the first coupler and the second coupler can rotate relatively. The detection assembly comprises a first detection part, a second detection part, a first metal induction proximity switch matched with the first detection part, and a second metal induction proximity switch matched with the second detection part. The control module is in signal connection with the first metal induction proximity switch and the second metal induction proximity switch. The crane rotating mechanism protection system can monitor the running state of the coupler in real time, safety is improved, and potential safety hazards are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of crane safety protection, and in particular to a crane rotating mechanism protection system. Background Art

[0002] With the continuous development of modern industry, large cranes and other lifting machinery have been widely used in numerous fields, such as construction, port logistics, and factory production, becoming indispensable key equipment. These cranes are typically equipped with high-speed rotating mechanisms. Their operation relies on the transmission of torque from the motor to the reduction gearbox through a coupling to achieve efficient operation of the mechanical structure. The coupling plays a central role in this process, stably transmitting the high-speed rotating motor torque to the reduction gearbox, thereby driving the entire mechanical system.

[0003] During actual operation, couplings are prone to loosening and wear due to long-term high-speed operation, which can lead to a gradual increase in mechanical clearance. When the coupling and drive shaft become loose or misaligned, it can cause serious equipment failure, even resulting in casualties and significant property damage.

[0004] Therefore, it is urgent to design a crane rotating mechanism protection system to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a crane rotating mechanism protection system that can monitor the operating status of the coupling in real time, improve safety, and reduce potential safety hazards.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The present invention provides a crane rotating mechanism protection system, comprising:

[0008] A first coupling is provided at a shaft end of a motor of a rotary drive system of the crane;

[0009] a second coupling, provided at a shaft end of a reducer of the rotary drive system of the crane;

[0010] The first coupling and the second coupling are connected and used to transmit torque, and the first coupling and the second coupling can rotate relative to each other;

[0011] a detection assembly, the detection assembly comprising a first detection component mounted on the first coupling, a second detection component mounted on the second coupling, a first metal-sensing proximity switch cooperating with the first detection component, and a second metal-sensing proximity switch cooperating with the second detection component;

[0012] A control module is connected to the first metal sensing proximity switch and the second metal sensing proximity switch for signals. The control module is used to receive a first signal detected by the first metal sensing proximity switch and a second signal detected by the second metal sensing proximity switch, and perform logical judgment on the first signal and the second signal.

[0013] As an optional technical solution for a crane rotating mechanism protection system, the first detection component and the second detection component are both metal sheets, and the first detection component is bonded to the peripheral side surface of the first coupling, and the second detection component is bonded to the peripheral side surface of the second coupling.

[0014] As an optional technical solution for a crane rotating mechanism protection system, the crane rotating mechanism protection system also includes an adhesive layer, and the first detection component is bonded to the peripheral side surface of the first coupling through the adhesive layer, and the second detection component is bonded to the peripheral side surface of the second coupling through the adhesive layer.

[0015] As an optional technical solution for a crane rotating mechanism protection system, the first detection component and the second detection component are both provided in plurality, and the plurality of first detection components are evenly distributed in a ring on the circumferential side surface of the first coupling, and the plurality of second detection components are evenly distributed in a ring on the circumferential side surface of the second coupling.

[0016] As an optional technical solution for a crane rotating mechanism protection system, the angle between two adjacent first detection components and the axis of the first coupling is R1, and the angle between two adjacent second detection components and the axis of the second coupling is R2, and R1=R2.

[0017] As an optional technical solution for a crane rotating mechanism protection system, the crane rotating mechanism protection system also includes an adjustment component, and the first metal sensing proximity switch and the second metal sensing proximity switch are both arranged on the adjustment component. The adjustment component is used to adjust the distance between the first metal sensing proximity switch and the first detection component, and to adjust the distance between the second metal sensing proximity switch and the second detection component.

[0018] As an optional technical solution for a crane rotating mechanism protection system, the adjustment assembly includes a vertical rod, a first cross rod, a second cross rod, a first locking member, and a second locking member. The first metal-sensing proximity switch is provided at one end of the first cross rod near the first coupling, and the second metal-sensing proximity switch is provided at one end of the second cross rod near the second coupling.

[0019] A plurality of adjustment holes are provided on the vertical rod, a first slide groove is provided on the first cross rod, a second slide groove is provided on the second cross rod, one end of the first locking member passes through the first slide groove and is connected to the adjustment hole, and one end of the second locking member passes through the second slide groove and is connected to the adjustment hole.

[0020] As an optional technical solution for a crane rotating mechanism protection system, the length of each adjustment hole is not less than the sum of the length of the first locking member extending into the adjustment hole and the length of the second locking member extending into the adjustment hole.

[0021] As an optional technical solution for a crane rotating mechanism protection system, a groove is provided on the vertical rod, and the adjustment hole is provided in the groove.

[0022] As an optional technical solution for a crane rotating mechanism protection system, the first cross bar is arranged along the axial concentric circle direction of the first coupling, and the second cross bar is arranged along the axial concentric circle direction of the second coupling.

[0023] The beneficial effects of the present invention include at least:

[0024] The present invention provides a crane rotating mechanism protection system, comprising a first coupling, a second coupling, a detection assembly, and a control module. The first coupling is disposed at the shaft end of a motor in the crane rotating drive system. The second coupling is disposed at the shaft end of a reducer in the crane rotating drive system. The first coupling and the second coupling are connected and configured to transmit torque, and the first coupling and the second coupling are capable of relative rotation. The detection assembly comprises a first detection component mounted on the first coupling, a second detection component mounted on the second coupling, a first metal-sensing proximity switch cooperating with the first detection component, and a second metal-sensing proximity switch cooperating with the second detection component. The control module is signal-connected to both the first and second metal-sensing proximity switches, and is configured to receive a first signal detected by the first and second metal-sensing proximity switches, and to perform logical judgments on the first and second signals.

[0025] In the above, the first coupling is located at the end of the motor shaft, and the second coupling is located at the end of the reducer shaft. The two are rigidly connected to transmit torque and should rotate synchronously during normal operation. The control module is signal-connected to both the first and second metal proximity switches, capable of receiving a first signal detected by the first and second metal proximity switches and performing logical analysis on the first and second signals. When there is no radial displacement between the first and second couplings, the signals received by the first and second metal proximity switches should be synchronized. However, if the first or second coupling becomes loose or worn, radial displacement between the first and second couplings may occur, causing the first and second signals output by the first and second metal proximity switches to become out of sync. In this case, the control module can output a fault protection signal, such as a flashing alarm light or a shutdown, to alert construction personnel, thereby improving safety, reducing potential safety hazards, and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0027] Figure 1 1 is a schematic structural diagram of a crane rotating mechanism protection system provided by an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the structure of a crane rotating mechanism protection system (motor not shown) provided in an embodiment of the present invention;

[0029] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0030] Figure 4 It is a schematic diagram of the control principle of the crane rotating mechanism protection system provided by an embodiment of the present invention.

[0031] Reference numerals

[0032] 100, motor; 200, reducer;

[0033] 10. First coupling; 11. First detection component; 12. First metal induction proximity switch;

[0034] 20. Second coupling; 21. Second detection component; 22. Second metal induction proximity switch;

[0035] 30. Control module;

[0036] 40. Adjustment assembly; 41. Vertical rod; 411. Adjustment hole; 412. Groove; 42. First crossbar; 421. First slide groove; 43. Second crossbar; 431. Second slide groove; 44. First locking member. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0040] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0041] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0044] This embodiment provides a crane rotating mechanism protection system that can monitor the operating status of the coupling in real time, improve safety, and reduce potential safety hazards.

[0045] like Figure 1-Figure 4 As shown, the crane rotating mechanism protection system primarily comprises a first coupling 10, a second coupling 20, a detection assembly, and a control module 30. The first coupling 10 is mounted on the shaft end of the motor 100 of the crane's rotating drive system. The second coupling 20 is mounted on the shaft end of the reducer 200 of the crane's rotating drive system. The first coupling 10 and the second coupling 20 are connected and used to transmit torque, and the first coupling 10 and the second coupling 20 are capable of relative rotation. The detection assembly includes a first detection component 11 mounted on the first coupling 10, a second detection component 21 mounted on the second coupling 20, a first metal-sensing proximity switch 12 that cooperates with the first detection component 11, and a second metal-sensing proximity switch 22 that cooperates with the second detection component 21. The control module 30 is signal-connected to both the first and second metal-sensing proximity switches 12 and 22. The control module 30 is configured to receive a first signal detected by the first metal-sensing proximity switch 12 and a second signal detected by the second metal-sensing proximity switch 22, and to perform logical analysis on the first and second signals.

[0046] Based on the above design, in this embodiment, the first coupling 10 is disposed at the shaft end of the motor 100, and the second coupling 20 is disposed at the shaft end of the reducer 200. The two are rigidly connected to transmit torque and should rotate synchronously during normal operation. The control module 30 is signal-connected to both the first metal-sensing proximity switch 12 and the second metal-sensing proximity switch 22. It is capable of receiving a first signal detected by the first metal-sensing proximity switch 12 and a second signal detected by the second metal-sensing proximity switch 22, and performing logical judgment on the first and second signals. When there is no radial displacement deviation between the first coupling 10 and the second coupling 20, the signals received by the first metal sensing proximity switch 12 and the second metal sensing proximity switch 22 should be synchronized; however, when the first coupling 10 or the second coupling 20 becomes loose or worn, a radial displacement deviation will occur between the first coupling 10 and the second coupling 20. At this time, the first signal output by the first metal sensing proximity switch 12 and the second signal output by the second metal sensing proximity switch 22 are no longer synchronized. At this time, the control module 30 can output a fault protection signal, such as a flashing alarm light or shutdown, to alert construction personnel, thereby improving safety, reducing safety hazards, and saving costs.

[0047] This crane rotating mechanism protection system can obtain real-time operating status information on the first and second couplings 10, 20, enabling dynamic monitoring of the relative position of the first and second couplings 10, 20. Compared to traditional periodic manual inspections, this crane rotating mechanism protection system continuously monitors the first and second couplings 10, 20, promptly detecting any loosening or minor displacement changes that may occur during operation, improving safety and reducing the risk of serious equipment failure.

[0048] It is understandable that the first coupling 10 and the second coupling 20 in this embodiment can be connected by flange, sleeve, elastic pin coupling, or other common connection methods in the field, which will not be repeated here.

[0049] In some optional embodiments, the first detection component 11 and the second detection component 21 are both metal sheets, and the first detection component 11 is bonded to the circumferential side surface of the first coupling 10, and the second detection component 21 is bonded to the circumferential side surface of the second coupling 20. The crane rotating mechanism protection system further includes an adhesive layer, and the first detection component 11 is bonded to the circumferential side surface of the first coupling 10 via the adhesive layer, and the second detection component 21 is bonded to the circumferential side surface of the second coupling 20 via the adhesive layer.

[0050] Specifically, an adhesive layer is used to bond the metal sheet to the circumferential side surfaces of the first coupling 10 and the second coupling 20. The adhesive layer can be made of a material with high bonding strength and wear resistance, such as a metal adhesive or epoxy resin. The metal sheet is made of a metal material with good magnetic conductivity, such as iron, to improve the detection sensitivity of the first metal proximity switch 12 and the second metal proximity switch 22.

[0051] In some optional embodiments, the first detection component 11 and the second detection component 21 are both provided in plurality, and the plurality of first detection components 11 are evenly distributed in a ring shape on the circumferential side surface of the first coupling 10, and the plurality of second detection components 21 are evenly distributed in a ring shape on the circumferential side surface of the second coupling 20.

[0052] Compared to setting only one first detection component 11 or only one second detection component 21, multiple first detection components 11 and multiple second detection components 21 can provide more detection signals (first signal and second signal) during the process of the first coupling 10 and the second coupling 20 rotating one circle. For example, when the first coupling 10 rotates, multiple first detection components 11 pass through the detection position of the first metal sensing proximity switch 12 in turn, and each first detection component 11 triggers a first signal once. This multi-point detection method can divide the rotation angle of the first coupling 10 more finely, so that the control module 30 can obtain the rotation position information of the first coupling 10 more accurately. Assuming that n first detection components 11 are installed on the first coupling 10, then during the process of the first coupling 10 rotating one circle (360°), n first signals will be generated, and the rotation angle corresponding to each first signal is 360° / n. This greatly improves the resolution and accuracy of the detection and minimizes the detection blind spot.

[0053] For example, in this embodiment, the number of the first detection components 11 and the second detection components 21 is two, three, four, etc.

[0054] Furthermore, the angle between two adjacent first detection components 11 and the axis of the first coupling 10 is R1, and the angle between two adjacent second detection components 21 and the axis of the second coupling 20 is R2, where R1 = R2. This symmetrical design ensures consistent detection accuracy for the first coupling 10 and the second coupling 20, facilitates comparison and logical judgment of the first and second signals by the control module 30, and improves detection accuracy and reliability.

[0055] Assuming R1 and R2 are both 90°, the first signal (or second signal) triggered by each first detection component 11 (or second detection component 21) during the rotation of the first coupling 10 (or second coupling 20) is spaced 90° apart. When the first coupling 10 and the second coupling 20 are operating normally and without displacement deviation, the frequency and phase of the signals received by the first metal-sensing proximity switch 12 and the second metal-sensing proximity switch 22 should be identical. This uniform detection angle makes it easier for the control module 30 to compare and analyze the first signal detected by the first coupling 10 and the second signal detected by the second coupling 20.

[0056] Conversely, if R1 is not equal to R2, the first and second signals may differ in frequency and phase, which can complicate the logic of the control module 30 and increase the risk of misjudgment. However, if R1 = R2, this can be avoided, ensuring good comparability between the first and second signals and improving detection accuracy.

[0057] like Figure 2-Figure 3 As shown, the crane rotating mechanism protection system also includes an adjustment assembly 40. The first metal induction proximity switch 12 and the second metal induction proximity switch 22 are both disposed on the adjustment assembly 40. The adjustment assembly 40 is used to adjust the distance between the first metal induction proximity switch 12 and the first detection component 11, and to adjust the distance between the second metal induction proximity switch 22 and the second detection component 21. The provision of the adjustment assembly 40 facilitates adjustment of the distance between the first metal induction proximity switch 12 and the first detection component 11, as well as the distance between the second metal induction proximity switch 22 and the second detection component 21, ensuring that the first metal induction proximity switch 12 can accurately detect the signal from the first detection component 11, and the second metal induction proximity switch 22 can accurately detect the signal from the second detection component 21, thereby improving the system's adaptability and detection accuracy.

[0058] Optionally, in some optional embodiments, two adjustment assemblies 40 may be provided, and the two adjustment assemblies 40 are symmetrically arranged on both sides of the first coupling 10 with respect to the axis of the first coupling 10 .

[0059] Specifically, the adjustment assembly 40 includes a vertical rod 41, a first crossbar 42, a second crossbar 43, a first locking member 44, and a second locking member (not shown). The first metal-sensing proximity switch 12 is provided at the end of the first crossbar 42 near the first coupling 10, and the second metal-sensing proximity switch 22 is provided at the end of the second crossbar 43 near the second coupling 20. The vertical rod 41 is provided with a plurality of adjustment holes 411, the first crossbar 42 is provided with a first slot 421, and the second crossbar 43 is provided with a second slot 431. One end of the first locking member 44 passes through the first slot 421 and connects to the adjustment hole 411, while one end of the second locking member passes through the second slot 431 and connects to the adjustment hole 411.

[0060] The vertical rod 41 serves as a supporting structure, and the first crossbar 42 and the second crossbar 43 are respectively mounted on the vertical rod 41 and secured by a first locking member 44 and a second locking member (not shown). In actual operation, construction personnel only need to loosen the first locking member 44 and the second locking member to move the first crossbar 42 and the second crossbar 43 along the adjustment hole 411 on the vertical rod 41, thereby adjusting the position of the first metal sensing proximity switch 12 and the second metal sensing proximity switch 22. After adjustment, tighten the first locking member 44 and the second locking member to fix the position of the first crossbar 42 and the second crossbar 43. The entire operation process is simple and convenient, does not require complex tools and equipment, and improves work efficiency.

[0061] The multiple adjustment holes 411 formed in the vertical bar 41 provide multiple optional installation positions for the first crossbar 42 and the second crossbar 43. The first slot 421 in the first crossbar 42 allows the first locking member 44 to slide within a certain range, thereby adjusting the relative position of the first crossbar 42 and the vertical bar 41. When the first locking member 44 passes through the first slot 421, connects with the adjustment hole 411, and is tightened, the first crossbar 42 is securely fixed to the vertical bar 41, thereby fixing the position of the first metal sensing proximity switch 12. The second slot 431 in the second crossbar 43 allows the second locking member to slide within a certain range, thereby adjusting the relative position of the second crossbar 43 and the vertical bar 41. When the second locking member passes through the second slot 431, connects with the adjustment hole 411, and is tightened, the second crossbar 43 is securely fixed to the vertical bar 41, thereby fixing the position of the second metal sensing proximity switch 22. This structure can ensure that the first metal induction proximity switch 12 and the second metal induction proximity switch 22 will not be shifted in position due to factors such as vibration during the operation of the crane, thereby ensuring the stability and reliability of detecting the first signal and the second signal.

[0062] In some optional embodiments, the first cross bar 42 and the second cross bar 43 are parallel to each other, and the first cross bar 42 and the second cross bar 43 form a preset angle with the vertical bar 41, and the preset angle can be set to 60°-120° according to actual needs.

[0063] Furthermore, the first crossbar 42 is arranged concentrically along the axial direction of the first coupling 10, and the second crossbar 43 is arranged concentrically along the axial direction of the second coupling 20. This arrangement ensures accurate relative positioning between the first metal proximity switch 12 and the first detection component 11, and between the second metal proximity switch 22 and the second detection component 21, thereby improving detection accuracy and stability.

[0064] Specifically, the first crossbar 42 is arranged concentrically with the axial direction of the first coupling 10, and the second crossbar 43 is arranged concentrically with the axial direction of the second coupling 20. This means that the position where the first metal proximity switch 12 is mounted on the first crossbar 42 is coplanar with the rotation axis of the first coupling 10 and maintains concentricity with the axis of the first coupling 10; and the position where the second metal proximity switch 22 is mounted on the second crossbar 43 is coplanar with the rotation axis of the second coupling 20 and maintains concentricity with the axis of the second coupling 20.

[0065] When the first coupling 10 rotates, the first detection component 11 rotates along a circular path centered on the axis of the first coupling 10. Placing the first crossbar 42 concentrically with the axial direction of the first coupling 10 ensures that the first metal proximity switch 12 is always located within the rotation plane of the first detection component 11 and maintains a relatively stable distance from the first detection component 11. This arrangement ensures accurate relative positioning between the first metal proximity switch 12 and the first detection component 11, improving detection accuracy and the stability of the first detection signal.

[0066] Similarly, when the second coupling 20 rotates, the second detection component 21 rotates along a circular path centered on the axis of the second coupling 20. Placing the second crossbar 43 concentrically with the axial axis of the second coupling 20 ensures that the second metal proximity switch 22 is always located within the rotation plane of the second detection component 21 and maintains a relatively stable distance from the second detection component 21. This arrangement ensures accurate relative positioning between the second metal proximity switch 22 and the second detection component 21, improving detection accuracy and the stability of the second detection signal.

[0067] In this embodiment, the length of each adjustment hole 411 is not less than the sum of the length of the first locking member 44 extending into the adjustment hole 411 and the length of the second locking member extending into the adjustment hole 411, which can ensure that the first locking member 44 and the second locking member have sufficient moving space in the adjustment hole 411 and ensure the fixation reliability after adjustment.

[0068] Assuming the length of the first locking member 44 extending into the adjustment hole 411 is L1, and the length of the second locking member extending into the adjustment hole 411 is L2, then the length of the adjustment hole 411 is at least L1 + L2. Thus, when adjusting the positions of the first crossbar 42 and the second crossbar 43, both the first locking member 44 and the second locking member can slide within the adjustment hole 411 without being restricted in their range of movement due to the adjustment hole 411 being too short, thus ensuring flexibility in the adjustment operation.

[0069] After the first locking member 44 and the second locking member are moved to the appropriate position in the adjustment hole 411, they can be tightened to secure them to the vertical rod 41. Since the adjustment hole 411 is long enough, the first locking member 44 and the second locking member will not be deformed or damaged by being squeezed in the adjustment hole 411, thus ensuring a tight connection between the first locking member 44 and the second locking member and the vertical rod 41.

[0070] like Figure 2-Figure 3 As shown, the vertical rod 41 in this embodiment is provided with a groove 412, and the adjustment hole 411 is provided in the groove 412. This structural design is convenient for processing and installation, and can protect the adjustment hole 411 from damage by the external environment, thereby extending the service life of the adjustment assembly 40.

[0071] Specifically, the design of groove 412 partially encloses adjustment hole 411 within vertical rod 41, reducing direct contact between adjustment hole 411 and the external environment. For example, during crane operation, adjustment hole 411 may be corroded by external environmental factors such as dust, oil, and moisture, causing adjustment hole 411 to rust, deform, or become clogged. Placing adjustment hole 411 within groove 412 effectively blocks the intrusion of these external environmental factors, extending the service life of adjustment hole 411 and ensuring the proper function of adjustment assembly 40.

[0072] The working principle of the crane rotating mechanism protection system in this embodiment is as follows:

[0073] When the motor 100 drives the crane rotating mechanism to operate, the output shaft of the motor 100 drives the first coupling 10 to rotate, and the first coupling 10 transmits the torque to the second coupling 20 through the elastic pin. The second coupling 20 drives the input shaft of the reducer 200 to rotate, thereby realizing power transmission.

[0074] As the first and second couplings 10 and 20 rotate, the first detection component 11 mounted on the first coupling 10 and the second detection component 21 mounted on the second coupling 20 also rotate. When the metal sheet (first and second detection components 11 and 21) rotates to the detection position of the first and second metal proximity switches 12 and 22, they output 24V electrical signals (first and second signals), respectively. When the metal sheet rotates away from the detection position, the first and second metal proximity switches 12 and 22 output 0V voltage signals, respectively. These signals are transmitted to the control module 30.

[0075] The control module 30 is internally equipped with a pre-programmed logic processing program for detecting the first and second signals. Under normal circumstances, when there is no radial displacement deviation between the first coupling 10 and the second coupling 20, the signals received by the first metal proximity switch 12 and the second metal proximity switch 22 should be synchronized, i.e., they should change from "0" to "1" at the same time. However, if there is looseness or misalignment between the first coupling 10 and the second coupling 20, resulting in radial displacement deviation, the signals output by the first metal proximity switch 12 and the second metal proximity switch 22 may become out of sync. For example, when radial displacement occurs between the first coupling 10 and the second coupling 20, the relative position between the first detection component 11 and the first metal proximity switch 12 (or the second detection component 21 and the second metal proximity switch 22) changes, potentially causing the first metal proximity switch 12 to detect the first signal first, while the second metal proximity switch 22 detects the second signal later, or even failing to detect the second signal at all. The control module 30 judges these abnormal signals based on pre-set logical relationships. Once it determines that there is an abnormal displacement deviation between the first coupling 10 and the second coupling 20, it immediately outputs a protection control instruction, triggering the alarm device to sound an alarm, reminding on-site operators to conduct timely inspections and repairs. If necessary, the crane can be shut down to avoid equipment failures and safety accidents caused by loosening or misalignment of the first coupling 10 and the second coupling 20.

[0076] Obviously, the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

[0077] Note that throughout this specification, references to terms such as "some embodiments" and "other embodiments" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. Throughout this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. The crane rotating mechanism protection system is characterized by: include: A first coupling (10) is provided at a shaft end of a motor (100) of a crane rotation drive system; a second coupling (20) provided at a shaft end of a reducer (200) of the crane rotation drive system; The first coupling (10) and the second coupling (20) are connected and used to transmit torque, and the first coupling (10) and the second coupling (20) can rotate relative to each other; A detection assembly, the detection assembly comprising a first detection component (11) mounted on the first coupling (10), a second detection component (21) mounted on the second coupling (20), a first metal induction proximity switch (12) cooperating with the first detection component (11), and a second metal induction proximity switch (22) cooperating with the second detection component (21); A control module (30) is connected to the first metal sensing proximity switch (12) and the second metal sensing proximity switch (22) via signals, and the control module (30) is used to receive a first signal detected by the first metal sensing proximity switch (12) and a second signal detected by the second metal sensing proximity switch (22), and perform logical judgment on the first signal and the second signal.

2. The crane rotating mechanism protection system according to claim 1, characterized in that: The first detection component (11) and the second detection component (21) are both metal sheets, and the first detection component (11) is bonded to the peripheral side surface of the first coupling (10), and the second detection component (21) is bonded to the peripheral side surface of the second coupling (20).

3. The crane rotating mechanism protection system according to claim 2, characterized in that: The crane rotating mechanism protection system further comprises an adhesive layer, wherein the first detection component (11) is bonded to the peripheral side surface of the first coupling (10) through the adhesive layer, and the second detection component (21) is bonded to the peripheral side surface of the second coupling (20) through the adhesive layer.

4. The crane rotating mechanism protection system according to claim 1, characterized in that: The first detection component (11) and the second detection component (21) are both provided in plurality, and the plurality of the first detection components (11) are evenly distributed in an annular shape on the circumferential side surface of the first coupling (10), and the plurality of the second detection components (21) are evenly distributed in an annular shape on the circumferential side surface of the second coupling (20).

5. The crane rotating mechanism protection system according to claim 4, characterized in that: The angle between two adjacent first detection components (11) and the axis of the first coupling (10) is R1, and the angle between two adjacent second detection components (21) and the axis of the second coupling (20) is R2, and R1=R2.

6. The crane rotating mechanism protection system according to claim 1, characterized in that: The crane rotating mechanism protection system further includes an adjustment component (40), wherein the first metal induction proximity switch (12) and the second metal induction proximity switch (22) are both arranged on the adjustment component (40), and the adjustment component (40) is used to adjust the distance between the first metal induction proximity switch (12) and the first detection component (11), and to adjust the distance between the second metal induction proximity switch (22) and the second detection component (21).

7. The crane rotating mechanism protection system according to claim 6, characterized in that: The adjustment assembly (40) comprises a vertical rod (41), a first cross rod (42), a second cross rod (43), a first locking member (44) and a second locking member, wherein the first metal induction proximity switch (12) is provided at one end of the first cross rod (42) close to the first coupling (10), and the second metal induction proximity switch (22) is provided at one end of the second cross rod (43) close to the second coupling (20); A plurality of adjustment holes (411) are provided on the vertical rod (41), a first slide groove (421) is provided on the first cross rod (42), a second slide groove (431) is provided on the second cross rod (43), one end of the first locking member (44) passes through the first slide groove (421) and is connected to the adjustment hole (411), and one end of the second locking member passes through the second slide groove (431) and is connected to the adjustment hole (411).

8. The crane rotating mechanism protection system according to claim 7, characterized in that: The length of each adjustment hole (411) is not less than the sum of the length of the first locking member (44) extending into the adjustment hole (411) and the length of the second locking member extending into the adjustment hole (411).

9. The crane rotating mechanism protection system according to claim 7, characterized in that: A groove (412) is provided on the vertical rod (41), and the adjustment hole (411) is provided in the groove (412).

10. The crane rotating mechanism protection system according to claim 7, characterized in that: The first cross bar (42) is arranged along the axial concentric circle direction of the first coupling (10), and the second cross bar (43) is arranged along the axial concentric circle direction of the second coupling (20).

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