Swing mechanism automatic locking system and method and crane

Abstract

Compared with the prior art, the automatic locking system of the slewing mechanism disclosed by the invention comprises a fixed support arranged on a slewing seat of a crane, a locking device and a locking device, the locking driving device is arranged on the fixed support; the locking sleeve is arranged on the crane revolving bed and is positioned below the fixed support; the locking pin penetrates through the locking sleeve, the top end of the locking pin and a telescopic control rod of the locking driving device are connected to a locking positioning plate arranged on the crane fixing seat, a locking hole is formed in the locking positioning plate, and the locking hole is used for being matched with the locking pin to lock and control the rotation state of the crane rotation seat and the crane fixing seat; and the position detection devices are arranged on the crane rotary seat and the crane fixed seat. According to the scheme, automatic slewing locking of the slewing mechanism of the crane can be achieved, the labor intensity of an operator is reduced, the working efficiency of slewing anchoring is improved, and in addition, the invention further relates to an automatic slewing mechanism locking method and the crane which have the same technical effects.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and more specifically, to an automatic locking system for a slewing mechanism. In addition, the present invention also provides an automatic locking method for a slewing mechanism and a crane. Background Art

[0002] With the development of logistics and transportation, gantry cranes, as fully rotatable lifting equipment, are multifunctional and highly efficient. In the prior art, conventional lifting equipment uses manual locking for slewing anchoring, which requires two people to lock together. The slewing anchoring position is manually observed for alignment, which results in low work efficiency. If there is only one person on the equipment, the operator may need to observe several times before locking it. In some projects, the driver's cab is far away from the location of the locking device, resulting in high work intensity and low work efficiency.

[0003] Therefore, how to provide an automatic locking system for a slewing mechanism that can overcome the problems of the prior art, achieve automatic slewing locking of the crane slewing mechanism, reduce the labor intensity of the operator, and improve the work efficiency of slewing anchoring has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the present invention provides a slewing mechanism automatic locking system, which can overcome the existing technical problems, realize the automatic slewing locking of the crane slewing mechanism, reduce the labor intensity of the operator, and improve the work efficiency of slewing anchoring. In addition, the present invention also provides a slewing mechanism automatic locking method and a crane, which also have the above-mentioned beneficial effects.

[0005] The present invention provides an automatic locking system for a slewing mechanism, comprising: a fixed support arranged on a crane slewing seat; a locking drive device arranged on the fixed support; a locking sleeve arranged on the crane slewing seat and located below the fixed support; a locking pin passing through the locking sleeve, the top end of the locking pin being connected to a telescopic control rod of the locking drive device and a locking positioning plate arranged on the crane fixed seat, the locking positioning plate being provided with a locking hole, the locking hole being used to cooperate with the locking pin to lock and control the slewing state of the crane slewing seat and the crane fixed seat; and a position detection device arranged on the crane slewing seat and the crane fixed seat.

[0006] Furthermore, in a preferred embodiment of the present invention, the device also includes: a slewing correction device arranged on the slewing seat of the crane; the slewing correction device includes: a correction base arranged on the slewing seat of the crane; a correction box arranged on the correction base; a rotary encoder arranged in the correction box; a correction transmission mechanism arranged on the correction box, the output end of the correction transmission mechanism is connected to the input end shaft of the rotary encoder; a correction gear arranged on the input end of the correction transmission mechanism, the correction gear cooperates with the fixed gear ring on the crane fixed seat; a correction switch arranged on the correction base; a trigger part arranged on the crane fixed seat, the trigger part is used to trigger the correction switch when the correction switch is transmitted.

[0007] Furthermore, in a preferred embodiment of the present invention, the locking sleeve includes: a sleeve body arranged on the slewing seat of the crane; a pin shaft accommodating cavity arranged in the sleeve body, and the pin shaft accommodating cavity is a vertical cylindrical cavity; an upper sealing neck structure arranged at the upper end of the pin shaft accommodating cavity; a lower sealing neck structure arranged at the lower end of the pin shaft accommodating cavity; the upper sealing neck structure and the lower sealing neck structure are sealed and connected to the locking pin via a sealing ring.

[0008] Furthermore, in a preferred embodiment of the present invention, the locking sleeve further comprises: An intermediate cavity is disposed in the pin shaft accommodating cavity and is located between the upper sealing neck structure and the lower sealing neck structure; the inner diameter of the intermediate cavity is greater than the inner diameters of the upper sealing neck structure and the lower sealing neck structure.

[0009] Furthermore, in a preferred embodiment of the present invention, the locking pin is divided from top to bottom into a limit section, an upper sealing section, an intermediate section, and a lower sealing section; the limit section is the shoulder of the locking pin; the upper sealing section is in sliding sealing cooperation with the upper sealing neck structure; the lower sealing section is in sliding sealing cooperation with the lower sealing neck structure; the intermediate section corresponds to the intermediate cavity; the limit section is used to abut against the top of the pin shaft accommodating cavity to limit the downward movement of the locking pin relative to the locking sleeve. Among them, the locking sleeve is provided with a pin shaft accommodating cavity, an upper sealing neck structure, a lower sealing neck structure, and an intermediate cavity, which precisely cooperate with the limit section, the upper sealing section, the intermediate section, and the lower sealing section of the locking pin, thereby ensuring stability and sealing during the locking process and preventing the intrusion of impurities such as dust and moisture. The locking sleeve is mounted on the slewing seat of the crane through the supporting outer edge structure and the sleeve buffer pad, which effectively reduces the impact and vibration during the locking process and improves the durability and stability of the system.

[0010] Furthermore, in a preferred embodiment of the present invention, the locking sleeve further comprises: A supporting outer edge structure is arranged at the upper end of the sleeve body; a sleeve buffer pad is sleeved on the outer wall of the sleeve body and located at the supporting outer edge structure; and the locking sleeve is mounted on the crane slewing seat through the supporting outer edge structure and the sleeve buffer pad.

[0011] Furthermore, in a preferred embodiment of the present invention, the locking drive device comprises: An electrically driven telescopic body is arranged on the fixed support; a driving motor is arranged on the electrically driven telescopic body; and an output end of the electrically driven telescopic body is a telescopic control rod.

[0012] Furthermore, in a preferred embodiment of the present invention, the position detection device comprises: A position detection sensor is arranged on the slewing seat of the crane; and a position marking structure is arranged on the fixed seat of the crane.

[0013] In addition, the present invention also provides a method for automatic locking of a slewing mechanism, which is used in the automatic locking system of the slewing mechanism as described above; the method comprises the following steps: obtaining locking instruction information; obtaining current angle position information, combining with preset locking position information, outputting locking direction and locking control instructions; The slewing drive device of the crane controls the slewing seat of the crane to rotate at a low speed relative to the fixed seat of the crane according to the locking direction; monitors the slewing position in real time, and outputs a pause command when the monitoring reaches the locking position; after monitoring that the slewing seat of the crane has stopped, a locking pin locking action command is issued to the locking drive device; after the locking pin is locked in place, the locking drive device is controlled to stop; the position of the slewing seat of the crane and the fixed seat of the crane is corrected: the alignment command is obtained through the correction switch, and the rotary encoder is calibrated. The method involved in the embodiment of the present invention automatically outputs the locking direction and locking control command by obtaining the locking command information, combining the current angle position information and the preset locking position information. This process realizes the full automation from command reception to locking completion, without the need for manual intervention, which significantly improves work efficiency.

[0014] During the locking process, the system monitors the rotation position in real time and outputs a pause command when the locking position is reached to ensure the precise alignment of the crane slewing seat and the crane fixed seat. Subsequently, position correction is performed through the correction switch and the rotary encoder to further improve the locking accuracy.

[0015] In addition, the present invention also provides a crane, comprising: a crane fixing seat; a crane slewing seat rotatably arranged on the crane fixing seat; and the automatic locking system of the slewing mechanism as described above, which also has the above technical effects.

[0016] Compared with the prior art, the technical solution of a slewing mechanism automatic locking system provided by the present invention comprises: a fixed support arranged on the slewing seat of the crane; a locking drive device arranged on the fixed support; a locking sleeve arranged on the slewing seat of the crane and located below the fixed support; a locking pin passing through the locking sleeve, the top end of the locking pin being connected to the telescopic control rod of the locking drive device; a locking positioning plate arranged on the fixed seat of the crane, the locking positioning plate being provided with a locking hole, the locking hole being used to cooperate with the locking pin to lock and control the slewing state of the slewing seat of the crane and the fixed seat of the crane; and a position detection device arranged on the slewing seat of the crane and the fixed seat of the crane. The present invention provides a technical solution of a slewing mechanism automatic locking system, which can overcome the problems of the prior art, realize the automatic slewing locking of the slewing mechanism of the crane, reduce the labor intensity of the operator, and improve the working efficiency of the slewing anchoring. In addition, the present invention also provides a crane, which also has the above-mentioned beneficial effects. In addition, the present invention also relates to a slewing mechanism automatic locking method and a crane, including the slewing mechanism automatic locking system as described above, which also has the above-mentioned technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 these drawings without paying creative work.

[0018] Figure 1 A structural diagram of the automatic locking system of the rotary mechanism provided in an embodiment of the present invention; Figure 2 A structural diagram of the arrangement of a rotation correction device provided by an embodiment of the present invention; Figure 3 A schematic structural diagram of a locking drive device provided in an embodiment of the present invention; Figure 4 A schematic diagram of the locking sleeve structure provided by an embodiment of the present invention; Figure 5 A schematic diagram of a locking pin structure provided by an embodiment of the present invention; Figure 6 A schematic diagram of the matching relationship between the locking sleeve and the locking pin provided in an embodiment of the present invention; Figure 7 A schematic diagram of the structure of a position detection device provided by an embodiment of the present invention; Figure 8 A schematic diagram of the structure of a rotation correction device provided by an embodiment of the present invention; Fig. 9This is a structural diagram of the arrangement of the rotation correction device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0021] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0023] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0024] like Figures 1 to 9As shown, the automatic locking system of the slewing mechanism provided by the embodiment of the present invention includes: a fixed support 1 arranged on the crane slewing seat A; a locking drive device 2 arranged on the fixed support 1; a locking sleeve 3 arranged on the crane slewing seat A and located below the fixed support 1; a locking pin 4 passing through the locking sleeve 3, the top end of the locking pin 4 being connected to the telescopic control rod 201 of the locking drive device 2; a locking positioning plate 5 arranged on the crane fixed seat B, the locking positioning plate 5 being provided with a locking hole 501, and the locking hole 501 is used to cooperate with the locking pin 4 to lock and control the slewing state of the crane slewing seat A and the crane fixed seat B; and a position detection device 6 arranged on the crane slewing seat A and the crane fixed seat B. The present invention provides a technical solution for a slewing mechanism automatic locking system, which can overcome the problems of the prior art, realize automatic slewing locking of a crane slewing mechanism, reduce the labor intensity of operators, and improve the work efficiency of slewing anchoring. In addition, the present invention also provides a crane, which also has the above-mentioned beneficial effects. In addition, the present invention also relates to a slewing mechanism automatic locking method and a crane, including the slewing mechanism automatic locking system as described above, which also has the above-mentioned technical effects.

[0025] Specifically, in a specific embodiment of the present invention, the device also includes: a rotation correction device 7 arranged on the crane slewing seat A; the rotation correction device 7 includes: a correction base 701 arranged on the crane slewing seat A; a correction box 702 arranged on the correction base 701; a rotary encoder 703 arranged in the correction box 701; a correction transmission mechanism 704 arranged on the correction box 701, the output end of the correction transmission mechanism 704 is connected to the input end shaft of the rotary encoder 703; a correction gear 705 arranged on the input end of the correction transmission mechanism 704, the correction gear 705 cooperates with the fixed gear ring B1 on the crane fixed seat B; a correction switch 706 arranged on the correction base 701; a trigger part 707 arranged on the crane fixed seat B, the trigger part 707 is used to trigger the correction switch 706 when the correction switch 706 is transmitted.

[0026] In an embodiment of the present invention, the system can automatically receive a locking instruction, automatically determine the locking direction and control the crane slewing seat to rotate at a low speed according to the current angle position information and the preset locking position information until the locking position is reached, which significantly reduces the reliance on manual operation and improves work efficiency and safety. Through the rotary encoder and correction device, the system can accurately correct and monitor the rotary position to ensure the accuracy of the locking position, further improving the stability and safety of the equipment operation.

[0027] Specifically, in a specific embodiment of the present invention, the locking sleeve 3 comprises: a sleeve body 301 disposed on a slewing seat A of the crane; A pin shaft accommodating cavity 302 is arranged in the sleeve body 301, and the pin shaft accommodating cavity 302 is a vertical cylindrical cavity; an upper sealing neck structure 303 is arranged at the upper end of the pin shaft accommodating cavity 302; a lower sealing neck structure 304 is arranged at the lower end of the pin shaft accommodating cavity 302; the upper sealing neck structure 303 and the lower sealing neck structure 304 are sealed and connected to the locking pin 4 via a sealing ring.

[0028] Specifically, in a specific embodiment of the present invention, the locking sleeve 3 further includes: An intermediate cavity 305 is disposed in the pin shaft accommodating cavity 302 and between the upper sealing neck structure 303 and the lower sealing neck structure 304 ; the inner diameter of the intermediate cavity 305 is greater than the inner diameters of the upper sealing neck structure 303 and the lower sealing neck structure 304 .

[0029] Specifically, in a specific embodiment of the present invention, the locking pin 4 is divided into a limit section 404, an upper sealing section 401, a middle section 402, and a lower sealing section 403 from top to bottom; the limit section 404 is the axial shoulder of the locking pin 4; the upper sealing section 401 is in sliding sealing cooperation with the upper sealing neck structure 303; the lower sealing section 403 is in sliding sealing cooperation with the lower sealing neck structure 304; the middle section 402 corresponds to the middle cavity 305; the limit section 404 is used to abut against the top end of the pin shaft accommodating cavity 302, thereby limiting the downward movement of the locking pin 4 relative to the locking sleeve 3.

[0030] Specifically, in a specific embodiment of the present invention, the locking sleeve 3 also includes: a supporting outer edge structure 306 arranged at the upper end of the sleeve body 301; a sleeve buffer pad 307 sleeved on the outer wall of the sleeve body 301 and located at the supporting outer edge structure 306; the locking sleeve 3 is mounted on the crane slewing seat A through the supporting outer edge structure 306 and the sleeve buffer pad 307.

[0031] In an embodiment of the present invention, a pin shaft accommodating cavity, an upper sealing neck structure, a lower sealing neck structure and an intermediate cavity are provided in the locking sleeve, which precisely cooperate with the limiting section, upper sealing section, intermediate section and lower sealing section of the locking pin, thereby ensuring stability and sealing during the locking process and preventing the intrusion of impurities such as dust and moisture. The locking sleeve is mounted on the crane slewing seat by supporting the outer edge structure and the sleeve buffer pad, thereby effectively reducing the impact and vibration during the locking process and improving the durability and stability of the system.

[0032] Specifically, in a specific embodiment of the present invention, the locking drive device 2 includes: An electrically driven telescopic body 202 is arranged on the fixed support 1 ; a driving motor 203 is arranged on the electrically driven telescopic body 202 ; and an output end of the electrically driven telescopic body 202 is a telescopic control rod 201 .

[0033] Specifically, in a specific embodiment of the present invention, the position detection device 6 includes: a position detection sensor 601 arranged on the slewing seat A of the crane; and a position marking structure 602 arranged on the fixed seat B of the crane.

[0034] In addition, an embodiment of the present invention further provides a method for automatically locking a slewing mechanism, which is used in the automatic locking system of the slewing mechanism as described above; the method comprises the following steps: obtaining locking instruction information; obtaining current angle position information, combining with preset locking position information, outputting locking direction and locking control instructions; The slewing drive device of the crane controls the slewing seat A of the crane to rotate at a low speed relative to the fixed seat B of the crane according to the locking direction; monitors the slewing position in real time, and outputs a pause command when the monitoring reaches the locking position; after monitoring that the slewing seat A of the crane has stopped, it sends a locking action command of the locking pin 4 to the locking drive device 2; after the locking pin 4 is locked in place, the locking drive device 2 is controlled to stop; the position of the slewing seat A of the crane and the fixed seat B of the crane is corrected: the alignment command is obtained through the correction switch 706, and the rotary encoder 703 is calibrated. The method involved in the embodiment of the present invention automatically outputs the locking direction and locking control command by obtaining the locking command information, combining the current angle position information and the preset locking position information. This process realizes the full automation from command reception to locking completion, without manual intervention, and significantly improves work efficiency.

[0035] And during the locking process, the system monitors the rotation position in real time, and outputs a pause command when the locking position is reached, ensuring the precise alignment of the crane slewing seat A and the crane fixed seat B. Subsequently, position correction is performed through the correction switch 706 and the rotary encoder 703 to further improve the locking accuracy.

[0036] In addition, due to the use of the rotary encoder 703 for position monitoring and correction, the system can accurately control the rotation angle of the crane slewing seat A, ensuring that the locking pin 4 can be accurately inserted into the locking hole 501 of the locking positioning plate 5 to achieve precise locking. The locking drive device 2 performs the locking operation after receiving the locking action instruction, and stops working after the locking pin 4 is locked in place, ensuring the stability and reliability of the locking process, avoiding safety hazards caused by inadequate locking or locking failure. Compared with the traditional manual locking method, this method simplifies the operation process through an automated process and reduces the difficulty of operation. The operator only needs to issue a locking instruction and monitor the locking process without the need for cumbersome manual operations.

[0037] The automated locking method reduces the number of manual operations and reduces the risk of safety accidents caused by human factors. At the same time, the system's real-time monitoring and correction functions further improve the accuracy and safety of locking.

[0038] In addition, due to the use of the rotary encoder 703 for position monitoring and correction, the system can accurately control the rotation angle of the crane slewing seat A, ensuring that the locking pin 4 can be accurately inserted into the locking hole 501 of the locking positioning plate 5 to achieve precise locking. The locking drive device 2 performs the locking operation after receiving the locking action instruction, and stops working after the locking pin 4 is locked in place, ensuring the stability and reliability of the locking process, avoiding safety hazards caused by inadequate locking or locking failure. Compared with the traditional manual locking method, this method simplifies the operation process through an automated process and reduces the difficulty of operation. The operator only needs to issue a locking instruction and monitor the locking process without the need for cumbersome manual operations.

[0039] The automated locking method reduces the number of manual operations and reduces the risk of safety accidents caused by human factors. At the same time, the real-time monitoring and correction functions of the system further improve the accuracy and safety of locking. It should be noted that this method is applicable to cranes of different models and specifications, as well as different locking positions and angle requirements. By adjusting the preset locking position information and locking control instructions, the system can adapt to different working conditions. That is, the automatic locking method of the slewing mechanism involved in the embodiment of the present invention significantly improves the locking efficiency and safety of the crane through the technical advantages of automation, intelligence, accuracy, reliability, ease of operation and safety, adaptability and flexibility, and significantly reduces the difficulty of operation and labor costs.

[0040] Furthermore, an embodiment of the present invention also provides a crane, comprising: a crane fixed seat B; a crane slewing seat A rotatably arranged on the crane fixed seat B; and the automatic locking system of the slewing mechanism as described above, which also has the above-mentioned technical effects.

[0041] To be more specific, with the development of national logistics and transportation, portal cranes, as fully rotatable lifting equipment, have the characteristics of multi-function and high operating efficiency. In order to improve the intelligence of equipment operation, the present invention proposes an automatic locking system for a slewing mechanism and a crane with the system.

[0042] In the prior art, conventional equipment slewing anchoring adopts manual locking, which requires two people to cooperate in locking. The slewing anchoring position is manually observed to see if it is aligned, which has low work efficiency. If there is only one person on the equipment, the operator may need to observe it many times before locking it in position. In some projects, the driver's cab is far away from the location where the locking device is placed, which requires high work intensity and low safety. Based on this, an embodiment of the present invention provides an automatic locking system for a slewing mechanism, including: a locking positioning plate, a locking sleeve, a locking pin, a driving mechanism fixed support, a driving mechanism, which can be an electro-hydraulic push rod or a hydraulic cylinder, a rotary encoder and a correction device, a position detection device, the position detection device adopts a proximity switch or a magnetic switch, and a control system. Among them, the locking positioning plate is installed on the cylindrical main beam of the fixed part of the lifting equipment, and the locking sleeve, locking pin, driving mechanism fixed support, driving mechanism, rotary encoder and correction device, and position detection device are installed above the turntable of the lifting equipment, and the turntable can rotate 360 ​​degrees. In the embodiment of the present invention, when the system is in working state: the control system gives a retraction action signal to the locking device driving mechanism, pulls up the locking pin, and the locking pin is separated from the locking positioning plate to the designed safe distance, and the locking device driving mechanism automatically stops the action. At this time, the equipment can perform a rotary action. Because the equipment can rotate 360 ​​degrees, in order to ensure that the position detection device does not cause a false alarm, this device needs to be shielded at this time, and the position detection device does not work at this time.

[0043] When the device needs to be locked when not in operation: Working condition one is semi-automatic locking. In this working condition, the operator operates the equipment to perform low-speed rotation. When it approaches the locking position, the position detection device is in working condition. When the alignment signal is triggered, the equipment rotation action signal is automatically cut off to reduce the influence of human reaction speed on the alignment effect. The operator extends the action signal to the locking drive device, and the locking pin drops. After locking in place, the locking device drive mechanism automatically stops moving.

[0044] Working condition 2 is fully automatic locking. In this working condition, the operator presses the fully automatic locking button. The control system independently determines the angle between the current position and the locking position according to the calibrated anchor position, and determines whether to rotate counterclockwise or clockwise, or sets a default direction of rotation in the locked working state. The slewing mechanism automatically runs at a low speed. Combined with the original calibrated position information and the position detection device signal, after reaching the locking position, the slewing structure stops running, and the operator sends a signal to the locking drive device to extend the action. The locking pin drops, and the locking device drive mechanism automatically stops after locking in place. To ensure the accuracy of the calibrated anchor position, the absolute value encoder in the rotary encoder and the correction device monitors the rotation angle of the rotary position to improve the safety of equipment operation.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic locking system for a rotary mechanism, characterized in that: The device includes: A fixed support (1) disposed on a slewing seat (A) of the crane; A locking drive device (2) arranged on the fixed support (1); A locking sleeve (3) arranged on the crane slewing seat (A) and located below the fixed support (1); A locking pin (4) passing through the locking sleeve (3), wherein the top end of the locking pin (4) is connected to the telescopic control rod (201) of the locking drive device (2); A locking positioning plate (5) disposed on a crane fixing seat (B), wherein the locking positioning plate (5) is provided with a locking hole (501), and the locking hole (501) cooperates with the locking pin (4); A position detection device (6) is arranged on the crane slewing seat (A) and the crane fixed seat (B).

2. The automatic locking system for a slewing mechanism according to claim 1, characterized in that: The device also includes: A slewing correction device (7) arranged on the slewing seat (A) of the crane; The rotation correction device (7) comprises: A correction base (701) arranged on a slewing base (A) of the crane; A calibration box (702) arranged on the calibration base (701); A rotary encoder (703) disposed in the calibration box (701); A correction transmission mechanism (704) is arranged on the correction box (701), wherein an output end of the correction transmission mechanism (704) is axially connected to an input end of the rotary encoder (703); A correction gear (705) is arranged on the input end of the correction transmission mechanism (704), and the correction gear (705) cooperates with a fixed gear ring (B1) on a crane fixing seat (B); A calibration switch (706) disposed on the calibration base (701); A triggering part (707) is arranged on the crane fixing seat (B), and the triggering part (707) is used to trigger the correction switch (706) when the correction switch (706) is transmitted past.

3. The automatic locking system for a rotary mechanism according to claim 2, characterized in that: The locking sleeve (3) comprises: A sleeve body (301) is arranged on a crane slewing seat (A); A pin shaft accommodating cavity (302) is arranged in the sleeve body (301), and the pin shaft accommodating cavity (302) is a vertical cylindrical cavity; An upper sealing neck structure (303) disposed at the upper end of the pin shaft accommodating cavity (302); A lower sealing neck structure (304) disposed at the lower end of the pin shaft accommodating cavity (302); The upper sealing neck structure (303) and the lower sealing neck structure (304) are sealedly connected to the locking pin (4) via a sealing ring.

4. The automatic locking system for a slewing mechanism according to claim 3, characterized in that: The locking sleeve (3) further comprises: An intermediate cavity (305) disposed in the pin shaft accommodating cavity (302) and located between the upper sealing neck structure (303) and the lower sealing neck structure (304); The inner diameter of the intermediate cavity (305) is greater than the inner diameters of the upper sealing neck structure (303) and the lower sealing neck structure (304).

5. The automatic locking system for a slewing mechanism according to claim 4, characterized in that: The locking pin (4) is divided from top to bottom into a limiting section (404), an upper sealing section (401), a middle section (402), and a lower sealing section (403); The limiting section (404) is a shaft shoulder of the locking pin (4); The upper sealing section (401) and the upper sealing neck structure (303) are slidably sealed. The lower sealing section (403) and the lower sealing neck structure (304) cooperate in a sliding sealing manner; The middle section (402) corresponds to the middle cavity (305); The limiting section (404) is used to abut against the top end of the pin shaft accommodating cavity (302) to limit the locking pin (4) from moving downward relative to the locking sleeve (3).

6. The automatic locking system for a slewing mechanism according to claim 5, characterized in that: The locking sleeve (3) further comprises: A supporting outer edge structure (306) provided at the upper end of the sleeve body (301); A sleeve buffer pad (307) sleeved on the outer wall of the sleeve body (301) and located on the supporting outer edge structure (306); The locking sleeve (3) is mounted on the crane slewing seat (A) via the supporting outer edge structure (306) and the sleeve buffer pad (307).

7. The automatic locking system for a slewing mechanism according to any one of claims 1 to 6, characterized in that: The locking drive device (2) comprises: An electrically driven telescopic body (202) disposed on the fixed support (1); A driving motor (203) disposed on the electrically driven telescopic body (202); The output end of the electrically driven telescopic body (202) is a telescopic control rod (201).

8. The automatic locking system for a slewing mechanism according to claim 7, characterized in that: The position detection device (6) comprises: A position detection sensor (601) disposed on the crane slewing seat (A); A position marking structure (602) is arranged on the crane fixing seat (B).

9. A method for automatically locking a rotary mechanism, characterized in that: The method is used for the automatic locking system of the slewing mechanism according to any one of claims 1 to 8; the method comprises the following steps: Get lock instruction information; Obtain the current angle position information, combine it with the preset locking position information, and output the locking direction and locking control instructions; The slewing drive device of the crane controls the slewing seat (A) of the crane to rotate at a low speed relative to the fixed seat (B) of the crane according to the locking direction; Monitor the rotation position in real time, and output a pause command when the monitoring reaches the locking position; After detecting that the crane slewing seat (A) has come to a complete stop, a locking action instruction for the locking pin (4) is sent to the locking drive device (2); After the locking pin (4) is locked in place, controlling the locking drive device (2) to stop; Correct the position of the crane slewing seat (A) and the crane fixed seat (B): The alignment instruction is obtained through the correction switch (706) to calibrate the rotary encoder (703).

10. A crane, characterized in that: include: Crane fixing base (B); A crane slewing seat (A) slewingly arranged on the crane fixing seat (B); The automatic locking system for a slewing mechanism according to any one of claims 1 to 8.

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