Automatic locking system and method for slewing mechanism and crane

Abstract

Compared with the prior art, the automatic locking system of the slewing mechanism disclosed in the present invention includes: a fixed support provided on the crane slewing seat; a locking drive device provided on the fixed support; a locking sleeve provided on the crane slewing seat and located below the fixed support; a locking pin passing through the locking sleeve, the top end of which is connected to the telescopic control rod of the locking drive device; a locking positioning plate provided on the crane fixed seat, the locking positioning plate having a locking hole provided thereon, 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 provided on the crane slewing seat and the crane fixed seat. This solution can realize automatic slewing locking of the crane slewing mechanism, reduce the labor intensity of the operator, and improve the working efficiency of slewing anchoring. In addition, the present invention also relates to a slewing mechanism automatic locking method and a crane, which also have the above-mentioned 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 existing technology, 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 multiple times before locking it in place. 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 existing technical problems, realize automatic slewing locking of a crane slewing mechanism, reduce the labor intensity of operators, and improve the efficiency of slewing anchoring has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an automatic locking system for a slewing mechanism, which can overcome the existing technical problems, realize 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 an automatic locking method for a slewing mechanism and a crane, which also have the above 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 position detection devices 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 rotation correction device arranged on the slewing seat of the crane; the rotation 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 ring gear 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 past.

[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:

[0009] An intermediate cavity is provided 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.

[0010] Furthermore, in a preferred embodiment of the present invention, the locking pin is divided from top to bottom into a limiting section, an upper sealing section, an intermediate section, and a lower sealing section; the limiting 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 limiting section is used to abut against the top of the pin shaft accommodating cavity, limiting 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 limiting section, the upper sealing section, the intermediate section, and the lower sealing section of the locking pin, 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.

[0011] Furthermore, in a preferred embodiment of the present invention, the locking sleeve further comprises:

[0012] 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; the locking sleeve is mounted on the crane slewing seat through the supporting outer edge structure and the sleeve buffer pad.

[0013] Furthermore, in a preferred embodiment of the present invention, the locking drive device includes:

[0014] 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.

[0015] Furthermore, in a preferred embodiment of the present invention, the position detection device includes:

[0016] 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.

[0017] In addition, the present invention also provides a method for automatically locking a slewing mechanism, which is used in the automatic locking system of the slewing mechanism described above; the method comprises the following steps: obtaining locking instruction information; obtaining current angular position information, combining it with preset locking position information, and outputting a locking direction and locking control instruction;

[0018] The crane's slewing drive device controls the low-speed rotation of the crane's slewing seat relative to the crane's fixed seat based on the locking direction. It monitors the slewing position in real time and outputs a pause command when it reaches the locked position. Upon detecting that the crane's slewing seat has come to a complete stop, it issues a locking pin locking action command to the locking drive device. Once the locking pin is locked in place, the locking drive device is controlled to stop. The position of the crane's slewing seat and the crane's fixed seat is corrected by obtaining alignment instructions via a correction switch and calibrating the rotary encoder. The method according to an embodiment of the present invention automatically outputs locking direction and locking control instructions by acquiring locking instruction information and combining it with the current angular position information and the preset locking position information. This process achieves full automation from instruction reception to locking completion, eliminating the need for human intervention and significantly improving work efficiency.

[0019] During the locking process, the system monitors the slew position in real time and issues a pause command when the locking position is reached, ensuring precise alignment between the crane's slewing base and the crane's fixed base. Subsequently, position correction is performed using a calibration switch and rotary encoder to further improve locking accuracy.

[0020] In addition, the present invention also provides a crane, comprising: a crane fixed seat; a crane slewing seat rotatably arranged on the crane fixed seat; and the automatic locking system of the slewing mechanism as described above, which also has the above technical effects.

[0021] Compared with the prior art, the present invention provides a technical solution for a slewing mechanism automatic locking system, comprising: a fixed support provided on a crane slewing seat; a locking drive device provided on the fixed support; a locking sleeve provided on the crane slewing seat and located below the fixed support; a locking pin provided through the locking sleeve, the top end of the locking pin being connected to a telescopic control rod of the locking drive device; a locking positioning plate provided on the crane fixed seat, the locking positioning plate being provided with a locking hole for cooperating 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 provided on the crane slewing seat and the crane fixed seat. 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 the crane slewing mechanism, reduce the labor intensity of the operator, and improve the 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, which include the above-mentioned slewing mechanism automatic locking system, and also have the above-mentioned technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0023] Figure 1 A structural diagram of the automatic locking system for a rotary mechanism provided in an embodiment of the present invention;

[0024] Figure 2 A structural diagram of the rotation correction device provided in an embodiment of the present invention;

[0025] Figure 3 A schematic structural diagram of a locking drive device provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the locking sleeve structure provided by an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the locking pin structure provided by an embodiment of the present invention;

[0028] 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;

[0029] Figure 7 A schematic structural diagram of a position detection device provided in an embodiment of the present invention;

[0030] Figure 8 A schematic structural diagram of a rotation correction device provided in an embodiment of the present invention;

[0031] Figure 9 This is a structural diagram of the rotation correction device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solutions of 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 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] 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.

[0034] 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 accompanying 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 limiting the present invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0036] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0037] like Figures 1 to 9 As 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, and 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 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 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.

[0038] 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 702; a correction transmission mechanism 704 arranged on the correction box 702, 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 past.

[0039] In an embodiment of the present invention, the system can automatically receive locking instructions, automatically determine the locking direction based on the current angular position information and the preset locking position information, and control the crane slewing seat to rotate at a low speed 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.

[0040] Specifically, in a specific embodiment of the present invention, the locking sleeve 3 includes: a sleeve body 301 provided on the slewing seat A of the crane;

[0041] 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 through a sealing ring.

[0042] Specifically, in a specific embodiment of the present invention, the locking sleeve 3 further includes:

[0043] An intermediate cavity 305 is provided 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 .

[0044] Specifically, in a specific embodiment of the present invention, the locking pin 4 is divided into a limiting section 404, an upper sealing section 401, a middle section 402, and a lower sealing section 403 from top to bottom; the limiting section 404 is the shaft 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 limiting 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.

[0045] 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.

[0046] 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 through the supporting 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.

[0047] Specifically, in a specific embodiment of the present invention, the locking drive device 2 includes:

[0048] An electrically driven telescopic body 202 is provided on the fixed support 1 ; a driving motor 203 is provided on the electrically driven telescopic body 202 ; and an output end of the electrically driven telescopic body 202 is a telescopic control rod 201 .

[0049] Specifically, in a specific embodiment of the present invention, the position detection device 6 includes: a position detection sensor 601 provided on the slewing seat A of the crane; and a position marking structure 602 provided on the fixed seat B of the crane.

[0050] 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 described above; the method comprises the following steps: obtaining locking instruction information; obtaining current angular position information, combining it with preset locking position information, and outputting a locking direction and locking control instruction;

[0051] The crane's slewing drive device controls the low-speed rotation of the crane's slewing seat A relative to the crane's fixed seat B 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 crane's slewing seat A has stopped, it sends a locking action command for 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 crane's slewing seat A and the crane's fixed seat B 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 the need for human intervention, and significantly improves work efficiency.

[0052] 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 accurate alignment of the crane slewing base A with the crane fixed base B. Subsequently, position correction is performed using the correction switch 706 and the rotary encoder 703 to further improve locking accuracy.

[0053] Furthermore, thanks to the use of a rotary encoder 703 for position monitoring and correction, the system can precisely control the rotation angle of the crane's slewing seat A, ensuring that the locking pin 4 accurately inserts into the locking hole 501 of the locking positioning plate 5, achieving precise locking. Upon receiving the locking action command, the locking drive 2 executes the locking operation and ceases operation after the locking pin 4 is locked into position. This ensures the stability and reliability of the locking process and avoids safety hazards caused by inadequate locking or locking failure. Compared to traditional manual locking methods, this method simplifies the operational process through automated procedures and reduces operational difficulty. Operators only need to issue locking commands and monitor the locking process, eliminating the need for tedious manual operations.

[0054] The automated locking method reduces manual operation 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.

[0055] Furthermore, thanks to the use of a rotary encoder 703 for position monitoring and correction, the system can precisely control the rotation angle of the crane's slewing seat A, ensuring that the locking pin 4 accurately inserts into the locking hole 501 of the locking positioning plate 5, achieving precise locking. Upon receiving the locking action command, the locking drive 2 executes the locking operation and ceases operation after the locking pin 4 is locked into position. This ensures the stability and reliability of the locking process and avoids safety hazards caused by inadequate locking or locking failure. Compared to traditional manual locking methods, this method simplifies the operational process through automated procedures and reduces operational difficulty. Operators only need to issue locking commands and monitor the locking process, eliminating the need for tedious manual operations.

[0056] 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. 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. In other words, the automatic locking method for the slewing mechanism involved in the embodiment of the present invention significantly improves the locking efficiency and safety of the crane, significantly reducing the difficulty of operation and labor costs, through its technical advantages in automation, intelligence, precision, reliability, ease of operation and safety, adaptability and flexibility.

[0057] Furthermore, an embodiment of the present invention also provides a crane, comprising: a crane fixed seat B; a crane slewing seat A slewingly 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.

[0058] To be more specific, with the development of national logistics and transportation, portal cranes, as fully rotatable lifting equipment, are multifunctional and highly efficient. In order to improve the intelligence of equipment operation, the present invention proposes an automatic locking system for a slewing mechanism and a crane having the system.

[0059] In the prior art, conventional equipment slewing anchor adopts manual locking mode, which requires two people to cooperate in locking, and the slewing anchor 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, the work intensity is high, and the safety is not high. 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, a control system,

[0060] The locking and positioning plate is mounted on the cylindrical main beam of the fixed portion of the lifting equipment. The locking sleeve, locking pin, drive mechanism fixed support, drive mechanism, rotary encoder and correction device, and position detection device are mounted above the turntable of the lifting equipment, which can rotate 360 ​​degrees. In an embodiment of the present invention, when the system is in operation, the control system sends a retraction action signal to the locking device drive mechanism, pulls up the locking pin, and separates the locking pin from the locking and positioning plate to the designed safe distance. The locking device drive mechanism automatically stops operation, and the equipment can now rotate. Since the equipment can rotate 360 ​​degrees, to ensure that the position detection device does not cause false alarms, this device needs to be shielded, and the position detection device is not operational at this time.

[0061] When the device needs to be locked in non-working state:

[0062] Working condition one is semi-automatic locking. Under 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 state. 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.

[0063] 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 based on 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 locked position, the slewing structure stops running, and the operator sends an action signal to the locking drive device to extend the locking pin. 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 encoder in the rotary encoder and the correction device monitors the rotation angle of the rotary position to improve the safety of equipment operation.

[0064] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily 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 is not limited to the embodiments shown herein but is intended to conform 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: include: A fixed support (1) provided on a slewing seat (A) of the crane; A locking drive device (2) provided on the fixed support (1); A locking sleeve (3) provided 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) is provided on the 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 provided on the crane slewing seat (A) and the crane fixed seat (B); the device also includes: A slewing correction device (7) provided on the slewing seat (A) of the crane; The rotation correction device (7) comprises: A correction base (701) is provided on the slewing base (A) of the crane; A calibration box (702) provided on the calibration base (701); A rotary encoder (703) disposed in the calibration box (702); A correction transmission mechanism (704) is provided on the correction box (702), wherein the output end of the correction transmission mechanism (704) is axially connected to the input end of the rotary encoder (703); a correction gear (705) provided on the input end of the correction transmission mechanism (704), the correction gear (705) cooperating with a fixed gear ring (B1) on a crane fixing seat (B); A calibration switch (706) provided on the calibration base (701); A triggering portion (707) is provided on the crane fixing seat (B), and the triggering portion (707) is used to trigger the correction switch (706) when the correction switch (706) is driven past.

2. The automatic locking system for a rotary mechanism according to claim 1, 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 provided in the sleeve body (301), and the pin shaft accommodating cavity (302) is a vertical cylindrical cavity; An upper sealing neck structure (303) provided at the upper end of the pin shaft accommodating cavity (302); A lower sealing neck structure (304) provided 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.

3. The automatic locking system for a rotary mechanism according to claim 2, characterized in that: The locking sleeve (3) further comprises: An intermediate cavity (305) disposed within 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).

4. The automatic locking system for a rotary mechanism according to claim 3, 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 the shaft shoulder of the locking pin (4); The upper sealing section (401) and the upper sealing neck structure (303) are in sliding sealing cooperation; The lower sealing section (403) and the lower sealing neck structure (304) are in sliding sealing cooperation; 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), limiting the downward movement of the locking pin (4) relative to the locking sleeve (3).

5. The automatic locking system for a rotary mechanism according to claim 4, 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).

6. The automatic locking system for a rotary mechanism according to any one of claims 1 to 5, characterized in that: The locking drive device (2) comprises: An electrically driven telescopic body (202) provided on the fixed support (1); A driving motor (203) provided on the electrically driven telescopic body (202); The output end of the electrically driven telescopic body (202) is a telescopic control rod (201).

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

8. A method for automatically locking a rotary mechanism, characterized in that: The method is used for the automatic locking system of the rotary mechanism according to any one of claims 1 to 7; the method comprises the following steps: Get lock instruction information; Obtain the current angle position information, combine it with the preset lock position information, and output the lock direction and lock control instructions; The slewing drive of the crane controls the slewing seat (A) 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 locked 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, the locking drive device (2) is controlled 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).

9. 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 rotary mechanism according to any one of claims 1 to 7.

Images