Anti-overload motor for engineering machinery

Abstract

The invention provides an anti-overload engineering machinery motor, and relates to the technical field of motors, the motor comprises a motor main body, the end part of the motor main body is provided with a connecting assembly, one side of the motor main body is provided with a base, the upper side of the base is provided with a bearing seat, the bearing seat is internally and rotatably provided with a rotating sleeve, and one side of the rotating sleeve is provided with a conveying shaft. Power supply of positive and negative electrode cables can be automatically cut off through the anti-overload assembly when the rotating speed of the conveying shaft is reduced, and then electromagnet operation of the electromagnetic coil on the first magnet set can be stopped, so that the second magnet set cannot drive the first magnet set to rotate, and then low-pressure rotation of the motor body is achieved; by means of the structure, the situation that the motor body is loaded due to the fact that the transmission structure is stuck in the using process of the motor body can be avoided, the rotating speed of the conveying shaft is reduced in the stuck process, driving connection of the motor body is disconnected in time, it is guaranteed that the motor body is not loaded, and the service life of the motor body is prolonged.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more specifically, to an overload-resistant motor for engineering machinery. Background Technology

[0002] In engineering machinery, electric motors are needed to transmit power in order to enable the equipment to operate, allowing the machinery to perform operations such as conveying or moving. For example, patent publication number CN222262356U describes an electric motor for engineering machinery, which includes a motor body, a mounting block, a mounting seat, a fixed seat, a fixed groove, a support seat, a support groove, a mounting mechanism, and a shock absorption mechanism. The mounting block is fixedly mounted on the motor body, the mounting seat is fixedly mounted on the end of the mounting block away from the motor body, the fixed seat is located on one side of the mounting seat, the fixed groove is opened on the fixed seat, the support seat is slidably mounted in the fixed groove, and the support groove is opened on the support seat. The mounting seat is slidably mounted in the support groove, and the mounting mechanism is located on the mounting block.

[0003] However, during the operation of the aforementioned motor, due to interference from various factors during prolonged operation of the mechanical equipment, the drive part between the mechanical equipment and the motor may become stuck, such as insufficient lubricating oil or impurities blocking the transmission parts. In this state, the operating load of the motor will increase. If it cannot be disconnected and repaired in time, it will cause the motor to overheat and the drive part to be damaged, thus reducing the service life of the motor. To address this, this application designs an overload-resistant motor for engineering machinery that can disconnect the drive connection between the motor and the mechanical equipment in time when overloaded, thereby improving the service life of the motor. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an overload-resistant motor for engineering machinery, which solves the problem that when existing motors experience jamming or other issues, the internal overload increases, leading to a decrease in motor lifespan.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An overload-resistant motor for engineering machinery includes a motor body, a connecting component installed at the end of the motor body, a base provided on one side of the motor body, a bearing seat installed on the upper side of the base, a rotating sleeve rotatably installed inside the bearing seat, a conveying shaft installed on one side of the rotating sleeve, and several sets of overload-resistant components for disconnection installed on the surface of the rotating sleeve, the connecting component extending into the interior of the rotating sleeve.

[0006] Preferably, a mounting bracket is fixedly installed on one side of the inner wall of the rotating sleeve. Several electromagnetic coils are installed on the surface of the mounting bracket, and a first magnet group is installed on the surface of the mounting bracket. Each iron core in the first magnet group is sleeved inside the corresponding electromagnetic coil. Positive and negative pole cables are provided on one side of the mounting bracket. One end of the positive and negative pole cables is electrically connected to several electromagnetic coils, and the other end of the positive and negative pole cables extends to the outside of the rotating sleeve.

[0007] Preferably, the connecting assembly includes a rotating insert rod disposed at the end of the motor body. A positioning sleeve is inserted through the rod, and a second magnet group is installed on the outside of the positioning sleeve. The second magnet group extends into the interior of the first magnet group, and the cores of the first and second magnet groups are arranged with alternating positive and negative poles.

[0008] Preferably, a damping rod is rotatably mounted at the center of the positioning sleeve, and an adjusting screw is fixedly mounted at one end of the damping rod. A threaded hole is opened inside the rotating rod, and the adjusting screw is threadedly engaged with the threaded hole.

[0009] Preferably, the overload protection component includes an extension frame, which is fixedly mounted on the surface of the rotating sleeve. A connecting slide rail is mounted on the lower side of the extension frame, and a rotating disk is rotatably mounted on the lower end of the extension frame. Extension columns are mounted on both ends of the lower surface of the rotating disk. A slider is slidably mounted inside the connecting slide rail, and a cylinder is mounted on the outer side of the slider via a convex ring. A set of split slip rings is mounted on the upper side of the inner wall of the cylinder. A movable seat is movably arranged inside the cylinder, and a second brush electrically connected to the split slip rings is provided on the surface of the movable seat.

[0010] Preferably, the movable seat is provided with a power cable inside, one end of which is connected to the second brush, and the other end of which is connected to a spiral cable. A power connector for connecting the spiral cable and the positive and negative cables is installed at the bottom of the cylinder.

[0011] Preferably, a conductive ring is provided inside the rotating disk, a second terminal is provided on the upper side of the split slip ring, a first brush is installed on the upper end of the extension frame, a first terminal is installed on the lower end of the first brush, the first terminal is located at the junction of the extension frame and the rotating disk, the outer side of the conductive ring is slidably electrically connected to the first brush, and the inner side of the conductive ring is slidably electrically connected to the first terminal. A mounting base is fixedly installed on one side of the base, and an electric slip ring is fixedly installed on the upper side of the mounting base. The outer side of the first brush is slidably electrically connected to the electric slip ring.

[0012] Preferably, a guide groove is provided on the outer surface of the cylinder, and an upper slot and a lower slot are provided on the upper and lower sides of the guide groove, respectively. The upper slot and the lower slot are aligned with one side of the corner of the guide groove. A limiting protrusion is provided on the inner side of the extension column, and the limiting protrusion is slidably limited and cooperates with the guide groove, the upper slot and the lower slot.

[0013] Preferably, the cylindrical body has positioning through holes on both sides, and the extension column has a groove on the lower side. A spring plate is slidably installed in the groove through a limiting slide. The spring plate is inserted into the adjacent positioning through hole, and a supporting spring is provided between the spring plate and the groove.

[0014] Preferably, the bottom of the rotating disk is provided with a mounting base, a trigger spring is installed inside the mounting base, and a top plate for contacting the trigger spring is provided on the upper side of the movable base; A side slide groove is provided on one side of the cylinder, and a top rod for adjusting the position of the movable seat is slidably installed inside the side slide groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This application utilizes an overload protection component to automatically disconnect the power supply to the positive and negative cables when the conveyor shaft speed decreases. This stops the electromagnetic coil from operating the first magnet group, preventing the second magnet group from driving the first magnet group to rotate. This achieves low-pressure rotation of the motor body. The above structure prevents the motor body from being overloaded due to transmission structure jamming during operation. By reducing the conveyor shaft speed when jamming occurs, the drive connection of the motor body is promptly disconnected, ensuring the motor body is not overloaded. Compared to existing motors, this application can be used in engineering machinery to avoid the problem of excessive motor load and easy motor damage caused by mechanical jamming, thus improving the motor's service life.

[0016] 2. The adjusting screw is rotated by rotating the damping rod. The limiting cooperation between the positioning sleeve and the rotating rod allows the adjusting screw to engage with the threaded hole, thereby adjusting the position ratio of the second magnet group inside the first magnet group. This adjustment of the transmission area allows for different speed adjustments to meet the transmission needs of different speeds. The electromagnetic coil increases the magnetic force between the first and second magnet groups, allowing the second magnet group to drive the first magnet group to rotate when driven by the motor. During rotation, because the iron cores of the first and second magnet groups are arranged with alternating positive and negative poles, the negative pole of the second magnet group can push the positive pole in the first magnet group, and vice versa, thus achieving stable power drive.

[0017] 3. In high-speed driving, this application utilizes the position setting of the cylinder to allow the movable seat inside the cylinder to move outward and approach the rotating disk under the centrifugal force during high-speed rotation. The movable seat can be located at the split slip ring and work with the second brush to achieve subsequent power transmission. When the drive structure jams, the drive speed decreases, and the centrifugal force also decreases, preventing the movable seat from contacting the split slip ring. This achieves automatic disconnection of power transmission at low speeds. The spiral cable ensures stable power transmission while the movable seat can move up and down, and works with the junction box to supply power to the positive and negative cables.

[0018] 4. By pulling up the top rod and simultaneously pulling the cylinder body, and then releasing the cylinder body, the cylinder body rises. Through the limiting action of the guide groove and the extension column, the rotating disk rotates under its guidance. During rotation, the extension column aligns with the positioning through hole. A support spring is installed between the spring plate and the groove, and the spring plate has a certain degree of flexibility, allowing its center to pass through the positioning through hole and press against the inner wall of the cylinder. This temporarily supports the position of the movable seat until the required speed is achieved. When the required speed is reached, the trigger spring receives pressure from the movable seat, and centrifugal force causes the cylinder body to move upward. As the cylinder body moves upward, the guide groove again causes the rotating disk to rotate, pulling the spring plate out of the positioning through hole and releasing the temporary fixation of the movable seat. In the event of low-speed overload, when the trigger spring pressure exceeds the centrifugal force generated by the rotation speed, the movable seat will fall, achieving automatic power-off operation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure at point AA; Figure 4 This is a three-dimensional structural diagram of the motor body; Figure 5 This is a side view of the motor body. Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure at point BB; Figure 7 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the present invention from another perspective; Figure 9 This is a schematic diagram of the front view of the structure of the present invention; Figure 10 yes Figure 9Schematic diagram of the cross-sectional structure at the CC section; Figure 11 yes Figure 10 Enlarged structural diagram at point a; Figure 12 This is a three-dimensional structural diagram of the overload protection component; Figure 13 This is a top view of the overload protection component. Figure 14 yes Figure 13 Schematic diagram of the cross-sectional structure at point DD; Figure 15 yes Figure 14 Enlarged structural diagram at point b Figure 16 yes Figure 14 Enlarged structural diagram at point c; Figure 17 yes Figure 13 Schematic diagram of the cross-sectional structure at the EE section.

[0020] In the diagram: 1. Motor body; 2. Base; 3. Bearing seat; 4. Rotating sleeve; 401. Mounting bracket; 402. First magnet assembly; 403. Electromagnetic coil; 404. Connecting slide rail; 405. Positive and negative cables; 5. Conveyor shaft; 6. Overload protection assembly; 601. Extension frame; 6011. First brush; 6012. First terminal; 602. Cylinder; 6021. Convex ring; 6022. Spiral cable; 6023. Slider; 6024. Electrical connector; 603. Rotary disk; 6031. Extension column; 6032. Limiting protrusion; 6033. Groove; 6034. Spring clamp; 6035. Support spring; 6036. 604. Limiting slide; 6041. Guide slide groove; 6042. Upper slot; 6043. Lower slot; 605. Positioning through hole; 606. Side slide groove; 6061. Top rod; 607. Movable seat; 6071. Top plate; 6072. Second brush; 6073. Power cable; 608. Split slip ring; 6081. Second terminal; 609. Mounting seat; 6091. Trigger spring; 610. Conductive ring; 7. Connecting assembly; 701. Rotating insert; 7011. Threaded hole; 702. Positioning sleeve; 703. Second magnet assembly; 704. Damping rotating rod; 705. Adjusting screw; 8. Mounting seat; 9. Electric slip ring. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 17 As shown, an overload-resistant motor for engineering machinery includes a motor body 1, a connecting component 7 installed at the end of the motor body 1, a base 2 provided on one side of the motor body 1, a bearing seat 3 installed on the upper side of the base 2, a rotating sleeve 4 rotatably installed inside the bearing seat 3, a conveying shaft 5 installed on one side of the rotating sleeve 4, and several sets of overload-resistant components 6 for disconnection installed on the surface of the rotating sleeve 4. The connecting component 7 extends into the interior of the rotating sleeve 4.

[0023] In this embodiment, a mounting bracket 401 is fixedly installed on one side of the inner wall of the rotating sleeve 4. Several electromagnetic coils 403 are mounted on the surface of the mounting bracket 401. A first magnet group 402 is mounted on the surface of the mounting bracket 401. Each iron core in the first magnet group 402 is sleeved inside the corresponding electromagnetic coil 403. Positive and negative cables 405 are provided on one side of the mounting bracket 401. One end of the positive and negative cables 405 is electrically connected to several electromagnetic coils 403, and the other end of the positive and negative cables 405 extends to the outside of the rotating sleeve 4.

[0024] This application utilizes an overload protection component 6 to automatically disconnect the power supply to the positive and negative cables 405 when the speed of the conveyor shaft 5 decreases. This stops the electromagnetic coil 403 from electromagnetically operating the first magnet group 402, preventing the second magnet group 703 from driving the first magnet group 402 to rotate. This achieves low-pressure rotation of the motor body 1. The above structure prevents the motor body 1 from being overloaded due to jamming of the transmission structure during use. By reducing the speed of the conveyor shaft 5 when jamming occurs, the drive connection of the motor body 1 is promptly disconnected, ensuring that the motor body 1 is not overloaded. Compared to existing motors, this application can be used in engineering machinery, avoiding the problem of excessive motor load and easy motor damage caused by jamming of the machinery structure, thus improving the motor's service life.

[0025] In this embodiment, the connecting component 7 includes a rotating insert 701, which is disposed at the end of the motor body 1. A positioning sleeve 702 is inserted through the rotating insert 701. A second magnet group 703 is installed on the outside of the positioning sleeve 702. The second magnet group 703 extends into the interior of the first magnet group 402. The iron core positions of the first magnet group 402 and the second magnet group 703 are both arranged with alternating positive and negative poles.

[0026] The positioning sleeve 702 has a damping rod 704 rotatably mounted at its center. One end of the damping rod 704 is fixedly mounted with an adjusting screw 705. The rotating insert 701 has a threaded hole 7011 inside, and the adjusting screw 705 is threadedly engaged with the threaded hole 7011.

[0027] Rotating the damping rod 704 causes the adjusting screw 705 to rotate. The positioning sleeve 702 and the rotating rod 701 engage, allowing the adjusting screw 705 to thread into the threaded hole 7011. This adjusts the positional proportion of the second magnet assembly 703 within the first magnet assembly 402, thereby adjusting its transmission area to achieve different speeds to meet varying transmission requirements. The electromagnetic coil 403 enhances the magnetic force between the first magnet assembly 402 and the second magnet assembly 703, enabling the second magnet assembly 703 to drive the first magnet assembly 402 to rotate when driven by the motor body 1. During rotation, because the cores of the first and second magnet assemblies 402 and 703 are alternately positioned (positive and negative poles), the negative pole of the second magnet assembly 703 can push the positive pole within the first magnet assembly 402, and vice versa, thus achieving stable power drive.

[0028] In this embodiment, the overload protection component 6 includes an extension frame 601, which is fixedly installed on the surface of the rotating sleeve 4. A connecting slide rail 404 is installed on the lower side of the extension frame 601. A rotating disk 603 is rotatably installed at the lower end of the extension frame 601. Extension columns 6031 are installed at both ends of the lower surface of the rotating disk 603. A slider 6023 is slidably installed inside the connecting slide rail 404. A cylinder 602 is installed on the outer side of the slider 6023 through a protruding ring 6021. A set of split slip rings 608 is installed on the upper side of the inner wall of the cylinder 602. A movable seat 607 is movably arranged inside the cylinder 602. A second brush 6072, which is electrically connected to the split slip rings 608, is provided on the surface of the movable seat 607.

[0029] In this application, the movable seat 607 is provided with a power cable 6073. One end of the power cable 6073 is connected to the second brush 6072, and the other end of the power cable 6073 is connected to the spiral cable 6022. The bottom of the cylinder 602 is equipped with a power connector 6024 for connecting the spiral cable 6022 and the positive and negative cables 405.

[0030] In this application, a conductive ring 610 is provided inside the rotating disk 603, a second terminal 6081 is provided on the upper side of the split slip ring 608, a first brush 6011 is installed on the upper end of the expansion frame 601, a first terminal 6012 is installed on the lower end of the first brush 6011, the first terminal 6012 is located at the junction of the expansion frame 601 and the rotating disk 603, the outer side of the conductive ring 610 is slidably electrically connected to the first brush 6011, and the inner side of the conductive ring 610 is slidably electrically connected to the first terminal 6012; A mounting base 8 is fixedly installed on one side of the base 2, and an electric slip ring 9 is fixedly installed on the upper side of the mounting base 8. The outer side of the first brush 6011 is slidably electrically connected to the electric slip ring 9.

[0031] By electrically connecting the slip ring 9 to the first brush 6011, stable power delivery can be achieved even during the continuous rotation of the rotating sleeve 4. Subsequently, the conductive ring 610 can transmit power from the first terminal 6012 to the second terminal 6081, thereby enabling the split slip ring 608 to smoothly deliver power. The conductive ring 610 ensures stable power delivery between the first brush 6011 and the split slip ring 608 during the rotation of the rotating disk 603, preventing power disconnection due to the rotation of the rotating disk 603 or cable entanglement due to external cables during rotation. In this application, during high-speed driving, the position of the cylinder 602 is utilized so that the movable seat 607 inside the cylinder 602 moves outward and approaches the rotating disk 603 under the centrifugal force of high-speed rotation. The movable seat 607 can be located at the split slip ring 608 and work with the second brush 6072 to achieve subsequent power transmission. When the drive structure jams, the drive speed decreases, and the centrifugal force also decreases, preventing the movable seat 607 from contacting the split slip ring 608. This achieves automatic disconnection of power transmission at low speeds. The spiral cable 6022 ensures stable power transmission while the movable seat 607 can move up and down, and works with the power connector 6024 to supply power to the positive and negative cables 405.

[0032] In this application, a guide groove 604 is provided on the outer surface of the cylinder 602. An upper slot 6041 and a lower slot 6042 are provided on the upper and lower sides of the guide groove 604, respectively. The upper slot 6041 and the lower slot 6042 are respectively aligned with one side of the corner of the guide groove 604. A limiting protrusion 6032 is provided on the inner side of the extension column 6031. The limiting protrusion 6032 slides and limits the guide groove 604, the upper slot 6041 and the lower slot 6042.

[0033] In the specific configuration, positioning through holes 605 are provided on both sides of the cylinder body 602, and a groove 6033 is provided on the lower side of the extension column 6031. A spring plate 6034 is slidably installed in the groove 6033 through the limiting slide 6036. The spring plate 6034 is interlocked with the adjacent positioning through hole 605, and a support spring 6035 is provided between the spring plate 6034 and the groove 6033.

[0034] It should be noted that the bottom of the rotating disk 603 is provided with a mounting base 609, and a trigger spring 6091 is installed inside the mounting base 609. The upper side of the movable base 607 is provided with a top plate 6071 for contacting the trigger spring 6091. A side slide groove 606 is provided on one side of the cylinder 602, and a top rod 6061 for adjusting the position of the movable seat 607 is slidably installed inside the side slide groove 606.

[0035] When rotating at high speed, the movable seat 607 will be thrown outward and push the trigger spring 6091. When the trigger spring 6091 is under pressure, the cylinder 602 will approach the rotating disk 603, so that the movable seat 607 contacts the split slip ring 608 and maintains the current state. When rotating at low speed, the centrifugal force on the movable seat 607 is reduced, so that the trigger spring 6091 will push the top plate 6071 away, so that the movable seat 607 breaks contact with the split slip ring 608. In this application, to prevent misjudgment and subsequent drive impact caused by the low-speed rotation of the motor body 1 during initial startup, the cylinder 602 is pulled up and then released while the top rod 6061 is pulled up. As the cylinder 602 rises, the rotating disk 603 rotates under its guidance through the limiting cooperation between the guide groove 604 and the extension column 6031. During rotation, the extension column 6031 aligns with the positioning through hole 605. A support spring 6035 is provided between the spring plate 6034 and the groove 6033, and the spring plate 6034 has a certain degree of flexibility, allowing its center to pass through the positioning through hole 605 and press against the cylinder. The inner wall of 602 allows the spring plate 6034 to temporarily support the position of the movable seat 607 until the required speed is met. When the speed is met, the spring 6091 receives pressure from the movable seat 607, and the centrifugal force causes the cylinder 602 to move upward. When the cylinder 602 moves upward, the guide groove 604 is used again to make the rotating disk 603 rotate again, so that the spring plate 6034 will be pulled out from the positioning through hole 605, releasing the temporary fixation of the movable seat 607. In the event of low-speed overload, when the pressure of the spring 6091 is greater than the centrifugal force generated by the speed, the movable seat 607 will fall, realizing the automatic power-off operation.

[0036] This application can achieve dynamic balance of the rotating sleeve 4 by setting multiple sets of anti-overload components 6, so as to ensure the stability of the conveyor shaft 5 when rotating and avoid vibration interference with the use effect.

[0037] The working principle of an overload-resistant motor for engineering machinery: In use, the speed intensity is first adjusted as needed. The adjusting screw 705 is rotated by rotating the damping rod 704. The limiting cooperation between the positioning sleeve 702 and the rotating rod 701 makes the adjusting screw 705 threaded into the threaded hole 7011, thereby adjusting the position ratio of the second magnet group 703 inside the first magnet group 402. Then, by adjusting its transmission area, different speeds can be adjusted. Then, by pulling up the top rod 6061, the cylinder 602 is pulled and released. When the cylinder 602 rises, the rotating disk 603 rotates under the guidance of the guide groove 604 and the extension column 6031. During the rotation, the extension column 6031 will be aligned with the positioning through hole 605. A support spring 6035 is provided between the spring plate 6034 and the groove 6033. The spring plate 6034 has a certain degree of flexibility, so that the middle part of the spring plate 6034 will pass through the positioning through hole 605 and press against the inner wall of the cylinder 602. The spring plate 6034 will temporarily support the position of the movable seat 607 until the required speed is met. In the current energized state, the electromagnetic coil 403 enhances the magnetic force between the first magnet group 402 and the second magnet group 703, so that the second magnet group 703 can drive the first magnet group 402 to rotate when driven by the motor body 1. During the rotation, since the iron core positions of the first magnet group 402 and the second magnet group 703 are alternately set with positive and negative poles, the negative pole of the second magnet group 703 can push the positive pole in the first magnet group 402, and the positive pole of the second magnet group 703 can push the negative pole in the first magnet group 402, thereby achieving stable power drive and continuous high-speed rotation. During the current high-speed rotation, the position setting of the cylinder 602 allows the movable seat 607 inside the cylinder 602 to be located at the split slip ring 608 under the centrifugal force during high-speed rotation, and to cooperate with the second brush 6072 to realize subsequent power transmission. When the drive structure gets stuck, the drive speed decreases, and the centrifugal force also decreases, so the movable seat 607 cannot contact the split slip ring 608, thereby automatically disconnecting the power supply at low speeds and disconnecting the drive part when a load occurs, thus protecting the motor body 1.

[0038] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. An overload-resistant motor for engineering machinery, comprising a motor body (1), characterized in that: A connecting component (7) is installed at the end of the motor body (1). A base (2) is provided on one side of the motor body (1). A bearing seat (3) is installed on the upper side of the base (2). A rotating sleeve (4) is rotatably installed inside the bearing seat (3). A conveying shaft (5) is installed on one side of the rotating sleeve (4). Several sets of overload protection components (6) for disconnection are installed on the surface of the rotating sleeve (4). The connecting component (7) extends into the interior of the rotating sleeve (4).

2. The overload-resistant motor for engineering machinery according to claim 1, characterized in that: A mounting bracket (401) is fixedly installed on one side of the inner wall of the rotating sleeve (4). Several electromagnetic coils (403) are installed on the surface of the mounting bracket (401). A first magnet group (402) is installed on the surface of the mounting bracket (401). Each iron core in the first magnet group (402) is sleeved inside the corresponding electromagnetic coil (403). A positive and negative pole cable (405) is provided on one side of the mounting bracket (401). One end of the positive and negative pole cable (405) is electrically connected to several electromagnetic coils (403), and the other end of the positive and negative pole cable (405) extends to the outside of the rotating sleeve (4).

3. The overload-resistant motor for engineering machinery according to claim 2, characterized in that: The connecting assembly (7) includes a rotating insert (701), which is disposed at the end of the motor body (1). A positioning sleeve (702) is inserted through the rotating insert (701). A second magnet group (703) is installed on the outside of the positioning sleeve (702). The second magnet group (703) extends into the interior of the first magnet group (402). The core positions of the first magnet group (402) and the second magnet group (703) are alternately arranged with positive and negative poles.

4. The overload-resistant motor for engineering machinery according to claim 3, characterized in that: A damping rod (704) is rotatably mounted at the center of the positioning sleeve (702). An adjusting screw (705) is fixedly mounted at one end of the damping rod (704). A threaded hole (7011) is opened inside the rotating rod (701). The adjusting screw (705) is threadedly engaged with the threaded hole (7011).

5. The overload-resistant motor for engineering machinery according to claim 2, characterized in that: The overload protection component (6) includes an extension frame (601), which is fixedly installed on the surface of the rotating sleeve (4). A connecting slide rail (404) is installed on the lower side of the extension frame (601). A rotating disk (603) is rotatably installed at the lower end of the extension frame (601). Extension columns (6031) are installed at both ends of the lower surface of the rotating disk (603). A slider (6023) is slidably installed inside the connecting slide rail (404). A cylinder (602) is installed on the outside of the slider (6023) through a convex ring (6021). A set of split slip rings (608) is installed on the upper side of the inner wall of the cylinder (602). A movable seat (607) is movably arranged inside the cylinder (602). A second brush (6072) electrically connected to the split slip ring (608) is provided on the surface of the movable seat (607).

6. The overload-resistant motor for engineering machinery according to claim 5, characterized in that: The movable seat (607) is equipped with a power cable (6073), one end of which is connected to the second brush (6072), and the other end of which is connected to the spiral cable (6022). The bottom of the cylinder (602) is equipped with a junction box (6024) for connecting the spiral cable (6022) and the positive and negative cables (405).

7. The overload-resistant motor for engineering machinery according to claim 5, characterized in that: The rotating disk (603) is provided with a conductive ring (610) inside. The split slip ring (608) is provided with a second terminal (6081) on its upper side. The expansion frame (601) is provided with a first brush (6011) on its upper end. The first brush (6011) is provided with a first terminal (6012) on its lower end. The first terminal (6012) is located at the junction of the expansion frame (601) and the rotating disk (603). The outer side of the conductive ring (610) is slidably electrically connected to the first brush (6011), and the inner side of the conductive ring (610) is slidably electrically connected to the first terminal (6012). A mounting base (8) is fixedly installed on one side of the base (2), and an electric slip ring (9) is fixedly installed on the upper side of the mounting base (8). The outer side of the first brush (6011) is slidably electrically connected to the electric slip ring (9).

8. The overload-resistant motor for engineering machinery according to claim 5, characterized in that: The outer surface of the cylinder (602) is provided with a guide groove (604). The upper and lower sides of the guide groove (604) are respectively provided with an upper slot (6041) and a lower slot (6042). The upper slot (6041) and the lower slot (6042) are respectively aligned with one side of the corner of the guide groove (604). The inner side of the extension column (6031) is provided with a limiting protrusion (6032). The limiting protrusion (6032) is slidably limited and cooperates with the guide groove (604), the upper slot (6041) and the lower slot (6042).

9. The overload-resistant motor for engineering machinery according to claim 8, characterized in that: The cylindrical body (602) has positioning through holes (605) on both sides, and the extension column (6031) has a groove (6033) on the lower side. A spring plate (6034) is slidably installed in the groove (6033) through a limiting slide (6036). The spring plate (6034) is interlocked with the adjacent positioning through hole (605). A support spring (6035) is provided between the spring plate (6034) and the groove (6033).

10. The overload-resistant motor for engineering machinery according to claim 9, characterized in that: The rotating disk (603) has a mounting base (609) at its bottom, and a trigger spring (6091) is installed inside the mounting base (609). The movable seat (607) has a top plate (6071) on its upper side for contacting the trigger spring (6091). A side slide groove (606) is provided on one side of the cylinder (602), and a top rod (6061) for adjusting the position of the movable seat (607) is slidably installed inside the side slide groove (606).

Images