Crawler-type magnetic motor applied to axial closed-circuit and open-circuit magnetic fields

Abstract

The invention discloses a crawler-type magnetic motor applied to axial closed-circuit and open-circuit magnetic fields. The axially-magnetized annular planetary permanent magnets have the magnetic attraction effect on the inner edge face of the pressure-bearing type oval steel crawler belt, two radial magnetic potential included angles on the upper side and the lower side of the inner edge of the crawler belt are formed, side magnetic poles of the planetary permanent magnets at the lower side included angles are attracted by heteropole permanent magnets, the magnetic field of the planetary permanent magnets is in a closed circuit, the magnetic force on the crawler belt disappears, and the crawler belt is in a follow-up state; the side magnetic pole magnetic field of the planetary permanent magnet at the upper included angle is in an open state, and the outer edge of the large circular section of the track on the side is temporarily fixed at the inner edge of the stator under the attraction of the rotating permanent magnet to form a radial magnetic potential for pulling the circular planetary permanent magnet and the track to roll together along the inner edge of the stator; the closed magnetic action environment causes the crawler belt to roll circularly to drive the output shaft to rotate and output. The device can be widely applied to the fields of transportation, energy construction, energy conservation, environmental protection and the like, is simple in mechanical structure and manufacturing process, and has wide industrial and commercial application values.

Description

Technical Field

[0001] This invention relates to a permanent magnet power output device. Background Technology

[0002] Based on the invention document entitled "A Turnaround Tracked Magnetic Wheel (Application No. 2024104171690)," which describes "a turnaround tracked magnetic wheel comprising a toothed ring, planetary gears, a planetary carrier, and accessories, characterized in that: the toothed ring is made of non-magnetic material, its inner circular wall has anti-slip grooves, and its two ends have limiting stops with an inner diameter smaller than the inner circular wall diameter; the planetary gears are radially magnetized, with planetary magnetic isolation rings concentrically fixed on the outer magnetic pole surfaces, and rotating along the inner circular wall of the stator; the accessories are multiple identical ring-shaped permanent magnets, each longer than the width of the ring-shaped permanent magnet and shorter than the limiting stops." The ring-shaped metal track is formed by connecting steel fasteners with an inner width of less than the circumference of the inner circular wall of the stator, with a maximum inward curvature of a plane. Its inner edge is supported by a planetary magnetic isolation ring and a top wheel. The outer arc surface between the magnetic isolation ring and the top wheel is in contact with the inner circular wall of the stator. The two sides of the plane section between the magnetic isolation ring and the top wheel are in contact with the outer plane of the support track with a maximum inward curvature of a plane. The planetary carrier is fixed with a square permanent magnet whose planar magnetic poles repel the outer arc surface magnetic poles of the ring-shaped planetary permanent magnets and attract the outer plane of the ring-shaped metal track. The spacing of the attracting magnetic effect is less than the thickness of the planetary magnetic isolation ring, and it supports the ring-shaped planetary permanent magnets and the top wheel. The rotation of the track wheels and the support wheels that support the rotation of the track. In this scheme, the metal track at the junction of the arc-shaped section and the flat section is transformed from being attracted by the magnetic field of the outer magnetic poles of the planetary permanent magnet to being repelled by it. Its steel buckles move one by one from the arc-shaped section into the flat section attracted by the square permanent magnet. The track steel buckles at the junction of the flat section and the arc-shaped section on the top wheel side are not affected by the parallel upward magnetic force and move one by one from the parallel section into the small arc-shaped section on the top wheel side, thus escaping the magnetic field. The steel buckles that are successively attached to the inner circular wall of the stator form a portal arch load-bearing structure, which resists the attraction of the outer arc-shaped magnetic poles of the planetary permanent magnet. The invention, in terms of its technical solution, is actually a permanent magnet power design scheme attempting to generate permanent kinetic energy, rather than a "permanent magnet power transmission device" that "can change the repulsive or attractive magnetic force on the magnetized body at any time without the application of an electromagnetic field or external force, and has a large transmission torque, low transmission loss, good transmission synchronization, and high output efficiency." The magnetic force creates a reverse action, pulling the circular planetary permanent magnet to rotate, driving the planetary carrier and output shaft to rotate, which in turn forms the cyclical transition of the steel fasteners of the track from being detached from the permanent magnet field to entering the magnetic field and being magnetically acted upon.However, regarding the permanent magnet power device, the technical solution describes a "square permanent magnet whose planar magnetic poles repel the outer arc surface magnetic poles of the circular planetary permanent magnet and simultaneously attract the outer edge plane of the annular metal track, with the attraction magnetic spacing being smaller than the thickness of the planetary magnetic ring." The "steel fasteners that are individually attached to the inner circular wall of the stator form an arch-shaped load-bearing structure, which reverses the attraction magnetic force on the outer arc surface magnetic poles of the circular planetary permanent magnet, causing the circular planetary permanent magnet to rotate under magnetic pull, thus driving the planetary carrier and output shaft to rotate." When the outer arc-shaped magnetic poles of the planetary permanent magnet simultaneously generate radial attractive magnetic potential on the metal track at the two junctions of the arc-shaped and planar sections, the radial attractive magnetic potential generated by the outer arc-shaped magnetic poles of the planetary permanent magnet on one side of the junction cannot be transformed into a repulsive magnetic force because the magnetic effect distance between the "square permanent magnet" and the metal track is smaller than that between the outer arc-shaped magnetic poles of the planetary permanent magnet and the metal track. Instead, the planetary permanent magnet rotates due to the reaction force of the radial attractive magnetic potential at the junction on the other side, where there is no magnetic field interference from the "square permanent magnet," thus driving the output shaft to output kinetic energy. The defect stems from the fact that the magnetic effect of the "square permanent magnet" on the metal track is a magnetic permeation relationship rather than a magnetic conduction relationship. This permeation cannot fully magnetize the metal track, achieving a high degree of magnetic saturation. Conversely, the circular planetary permanent magnet's poles repel each other unless the magnetic force of the circular planetary permanent magnet on the metal track is much smaller than that of the "square permanent magnet," the magnetic distance of its magnetic effect on the metal track is much greater, and the thickness of the metal track is small enough to achieve magnetization saturation. However, reducing the magnetic force of the circular planetary permanent magnet on the metal track, increasing the magnetic distance of its magnetic effect, and reducing the thickness of the metal track lead to a significant reduction in the "reverse magnetic force of the metal track on the outer arc surface poles of the circular planetary permanent magnet." Combined with non-standard mechanical friction and hysteresis losses, the kinetic energy output decreases drastically, making it difficult to achieve a power density with industrial application value. To achieve a high power density for industrial applications while conserving rare materials, the circular planetary permanent magnet's outer arc-shaped magnetic poles simultaneously generate radial attraction magnetomotive force on the metal track at the junction of the arc-shaped and planar sections, resulting in rotational output with radial magnetomotive force generated on one side and no magnetomotive force generated on the other. This invention provides a tracked magnetic motor utilizing both axial closed-loop and open-loop magnetic fields. In this device, the metal track, without requiring magnetization saturation, enables the circular planetary permanent magnet's outer arc-shaped magnetic poles to simultaneously generate radial magnetomotive force on one side of the metal track at the junction of the arc-shaped and planar sections, while the other side remains unaffected, thus achieving high power density rotational output. This design offers broad industrial application value and significantly reduces the use of rare materials. Summary of the Invention

[0003] The technical solution adopted by this invention to solve its technical problem is: a tracked magnetic motor for axial closed-circuit and open-circuit magnetic field applications, comprising a gear ring fixed to the stator, a planetary carrier with an output shaft, the circumference and width of which are greater than the outer diameter circumference and width of the planetary permanent magnet roller, each outer edge segment maintaining a consistent arc under pressure rolling state, an elliptical steel metal track whose inner edge partially encloses a planetary permanent magnet roller, and an arc-shaped magnetic pole fixed to the planetary carrier whose magnetic poles attract the outer edge of the steel metal track located at the junction of the large circular segment on one side of the gear ring and the small circular segment on the side of the planetary permanent magnet roller. The planetary permanent magnet roller comprises a rotating ring of planetary permanent magnets, a top wheel, accessories, and a stopping device, which are magnetically attracted to the track teeth at both ends of the track ring and the half-teeth of the gear ring, forming a magnetic gap with the outer edge of the metal track. The rollers are characterized by: the planetary permanent magnet rollers consisting of multiple identical, axially magnetized, and parallel-arranged rotating ring planetary permanent magnets, each with its side magnetic poles corresponding to the same or opposite poles, fixed to a planetary carrier; axially magnetized, and axially magnetized components located at the top edge of the track ring. On one side of the steel track, at the junction of the large circular segment and the small circular segment of the planetary permanent magnet roller, the annular planetary permanent magnets are fixed in parallel by limiting brackets, concentrically rotating around the annular planetary permanent magnets, and each magnetic pole face generates a repulsive magnetic effect on the magnetic pole face of each annular planetary permanent magnet. On the other side of the track, corresponding to the transition permanent magnet, at the junction of the large circular segment and the small circular segment of the planetary permanent magnet roller, the annular permanent magnets are also fixed in parallel by the same limiting bracket that fixes the concentric fan-shaped permanent magnets, and rotate concentrically. The system comprises: 1) a sector-shaped permanent magnet with opposite chromatic poles that attract the magnetic poles of each ring planetary permanent magnet; 2) an accessory fixed to the planetary carrier, whose magnetic poles correspond to the side magnetic poles of each ring planetary permanent magnet, and which generates a magnetic effect on the outer edge of the small circular segment of the metal track and forms a magnetic action distance with it; and 3) a stopping device that is electrically or manually connected to the stator external rotation device and the sector-shaped permanent magnet limiting bracket inside the stator, and that changes the magnetic action position of the same chromatic pole sector-shaped permanent magnet and the sector-shaped permanent magnet with opposite chromatic poles. In this scheme, the fan-shaped permanent magnet with different polarity attracts the planar magnetic pole of the circular planetary permanent magnet at the junction of the large and small circular segments of the metal track, thus closing the magnetic flux loop of the circular planetary permanent magnet in this region and shielding the radial magnetic potential attracted by the arc-shaped angle formed by the planar magnetic pole of the circular planetary permanent magnet and the large circular segment of the metal track. On the other side, the planar magnetic pole of the circular planetary permanent magnet at the junction is in an open magnetic circuit under the magnetic action of the fan-shaped permanent magnet with the same polarity. The planetary permanent magnet roller, which has lost the balance of relative magnetic forces, rotates as a planet, driving the planetary carrier and the output shaft to rotate and output, based on the radial magnetic potential attracted by the arc-shaped angle formed by the arc-shaped angle formed by the transfer permanent magnet and the metal track large circular segment temporarily fixed to the stator gear ring.The magnetic effect of the additional permanent magnet on the outer edge of the small circular section of the metal track on the side of the planetary permanent magnet roller supplements the magnetic density of that section, eliminating the rotational resistance of the planetary permanent magnet roller caused by the unbalanced magnetic force generated by the annular planetary permanent magnet on both sides of the junction area of ​​the opposite-polarity sector permanent magnet. When the machine needs to be stopped, the stator external rotation device drives the same-polarity sector permanent magnet and the opposite-polarity sector permanent magnet to rotate away from the junction position, so that the magnetic field of the annular planetary permanent magnet at the two junctions of the planetary permanent magnet roller and the metal track is simultaneously open, causing the relative magnetic forces between them to cancel each other out and stop the rotation.

[0004] The beneficial effects of this invention are: the steel metal track can generate a radial magnetomotive force on one side of the metal track at the junction of the arc-shaped segment and the planar segment without magnetization saturation, while the other side does not generate a magnetomotive force, thus producing a rotational output with high power density. This not only saves a lot of application costs of rare industrial materials, but also has a wide range of industrial application value. Its mechanical structure and manufacturing process are simple, and its commercial application prospects are broad. Attached Figure Description

[0005] The technical solution will be further explained below with reference to the accompanying drawings.

[0006] Figure 1 This is a planar elevation view of a tracked magnetic motor used in axial closed-circuit and open-circuit magnetic field applications.

[0007] Figure 2 for Figure 1 Cross-section view along line AA.

[0008] Figure 3 for Figure 2 Cross-section view along line CC.

[0009] Figure 4 for Figure 1 Mechanical operation diagram Figure 5 This is a part drawing.

[0010] In the attached diagram: 1. Circular planetary permanent magnet; 2. Different polarity sector permanent magnet; 3. Same polarity sector permanent magnet; 4. Casting adhesive; 5. Planetary carrier; 6. Planetary shaft; 7. Output shaft; 8. Magnetic attraction at equal intervals; 9. Limiting bracket; 10. Metal track; 11. External track teeth; 12. Arc-shaped tooth groove; 13. Connecting rod; 14. Limiting bracket linkage screw hole; 15. Additional permanent magnet; 16. Rotation stop magnetic block; 17. Positioning magnetic block; 18. Adapter permanent magnet; 19. Limiting bracket linkage screw; 20. Stop linkage gear; 21. Stopping center gear; 22. Control motor; 23. Running positioning magnetic block; 24. Stop positioning magnetic block; 25. Top wheel; 26. Internal track teeth; 27. Tooth cavity. Detailed Implementation

[0011] The planetary permanent magnet roller consists of three identical, axially magnetized, and equally spaced rings fixed to the outer edge of each ring of the planetary axis (6), supported by a planetary carrier (5) and rotated together by a connecting rod (14). It also consists of six identical, axially magnetized rings of the planetary permanent magnet (1) located at the junction of the large circular section of the steel track (10) on one side of the transition permanent magnet (18) and the small circular section on the side of the planetary permanent magnet roller. These rings of the planetary permanent magnet (1) are fixed parallel to each other by a limiting bracket (9), and are independently limited in rotation by the ring of the planetary permanent magnet (1). Each magnetic pole face... The system consists of six different chromatic pole sector permanent magnets (2) that generate a repulsive magnetic effect on the magnetic pole surfaces of each annular planetary permanent magnet (1) and the annular planetary permanent magnets (1) at the junction of the large circular section on the other side of the metal track (10) corresponding to the transfer permanent magnet (18) and the small circular section on the planetary permanent magnet roller side. These magnets are fixed in parallel by a limiting bracket (9) that fixes the same chromatic pole sector permanent magnet (3), and rotate together with the annular planetary permanent magnet (1) and the same chromatic pole sector permanent magnet (3). Each magnetic pole surface generates an attractive magnetic effect on the magnetic pole surface of each annular planetary permanent magnet (1). The steel metal track (10) is composed of N identical high-manganese steel buckles with hinged interlocking fasteners, limit plates, and inner and outer teeth on both ends of the raised platform. When the outer edge is under pressure, the movable gap between the outer edge of the two large circular sections and the inner edge of the two small circular sections closes, forming an ellipse that can bear weight and roll flexibly, with each arc and the parallelism of the two ends remaining unchanged. The arc surface magnetic pole of the transfer permanent magnet (18) fixed to the planetary carrier (5) and rotating with it generates an attractive magnetic effect on the outer arc surface of the large circular section of the steel metal track (10). When the large circular section of the steel metal track (10) rolls along the inner circle of the tooth ring on one side of the transfer permanent magnet (18), the outer teeth (11) on each steel buckle are tightly engaged and fixed with the arc-shaped tooth groove (12) in the inner circle of the tooth ring, forming an equal distance (8) between the outer edge of the large circular section and the arc surface magnetic pole of the transfer permanent magnet (18), causing the steel metal track (10) to be subjected to pressure. The magnetic field of the planetary permanent magnet roller partially enclosed by the metal track (10) is repelled by the same polarity fan-shaped permanent magnet (3). The side magnetic poles of the open ring planetary permanent magnet (1) are magnetically attracted to the inner edge of the large circular section of the steel track (10) at the junction of the large and small circular sections. The radial reaction attraction magnetic potential from weak to strong is formed, which pulls the planetary permanent magnet roller to roll in the reverse direction along the inner edge of the tooth ring, driving the planetary carrier (5) and the output shaft (7) to output work.The engagement of the tooth cavity (27) on the magnetic isolation ring of the circular planetary permanent magnet (1) with the inner track tooth (26) of the metal track causes the steel buckle of each small circular track segment to complete the process of releasing the force under the action of the magnetic potential. Its outer track tooth (11) separates from the inner arc-shaped tooth groove (12) of the tooth ring one by one and is attracted to the magnetic isolation ring. As it rotates, it reaches the junction of the large and small circular segments of the steel track (10) corresponding to the side of the transfer permanent magnet (18). The side magnetic pole of the opposite-polar fan-shaped permanent magnet (2) at this junction generates an attractive magnetic effect on the side magnetic pole of the circular planetary permanent magnet (1), making the magnetic field loop in this area closed. When the magnetic attraction distance is less than the thickness of the magnetic shielding ring, the magnetic force of the side magnetic pole of the circular planetary permanent magnet (1) on the inner edge of the large circular section of the steel track (10) completely disappears. The small circular section and the large circular section of the metal track (10) to the small circular section at the far end of the other side corresponding to the position of the planetary permanent magnet roller become a non-magnetic field area. This causes each steel buckle of the steel track (10) to detach from the magnetic field of the circular planetary permanent magnet (1) one by one in the following state, return to the magnetized area of ​​the transfer permanent magnet (18), and then generate a magnetic interaction with the side magnetic pole of the circular planetary permanent magnet (1) in a rotational cycle. In the magnetic field region of the heterochromatic fan-shaped permanent magnet (2), the magnetic field of the side magnetic pole of the annular planetary permanent magnet (1) of the small circular segment of the metal track (10) will form a low-density magnetic field region due to the circuit formed by the steel fastener. This causes the heterochromatic fan-shaped permanent magnet (2) in this region to generate a magnetomotive force that moves from the low-density region to the high-density region, thus forming the rotational resistance of the permanent magnet wheel. The additional permanent magnet (15) is fixed to the planetary carrier. The small circular segment of the metal track (10) corresponding to the magnetic field region of the heterochromatic fan-shaped permanent magnet (2) generates a magnetic field with the same polarity as the side magnetic pole of the annular permanent magnet (1) and maintains a magnetic field distance with it, so as to increase the magnetic density of this region, balance the difference in magnetic torque of the heterochromatic fan-shaped permanent magnet (2) in its two regions, and eliminate the rotational resistance acting on the permanent magnet wheel. The side magnetic poles of the three ring planetary permanent magnets (1) are set to be opposite each other and repel each other, so as to extend the open path of its magnetic field, increase the magnetic attraction force of the ring planetary permanent magnets (1) on the steel metal track (10) and the output power density. At the same time, the six same-pole sector permanent magnets (3) and different-pole sector permanent magnets (2) are set as positive-angle magnetic surface sector permanent magnets. Figure 5The casting adhesive (4) is fixed to the limiting bracket (9) so that it generates a magnetic effect on the side magnetic poles of the ring planetary permanent magnet (1), thereby eliminating the reverse magnetic effect of the opposite magnetic field on the metal track (10) and increasing the attraction magnetic effect of the side magnetic poles of the ring planetary permanent magnet (1) on the metal track (10). A top wheel (25) is installed on the planetary carrier to support the outer edge of the large circular section of the metal track on the side of the opposite polar fan-shaped permanent magnet (2) to eliminate its mechanical interference. Install an electric stop device. In this device, the stator external control motor (22) fixed to the stator drives the stop center gear (21) supported by the inner and outer bearings inside the stator to mesh with the stop external gear (20). The limit bracket external connecting screw (19) fixed to the stop external gear (20) passes through the arc-shaped strip hole on the planetary carrier (5) and is tightly connected to the limit bracket external connecting screw hole (14). The rotating stop magnetic block (16) fixed to the other end of the limit bracket (9) forms a magnetic attraction gap with the positioning magnetic block (17), the stop positioning magnetic block (24), and the running positioning magnetic block (23) fixed on the bearing bracket (5). When the planetary carrier (5) and output shaft (7) rotate, the rotating stop magnetic block (16) and the running positioning magnetic block (23) are attracted and positioned by magnetic poles. The stop external gear (20) drives the stop external center gear (21) and the control motor (22) to rotate freely. When the output shaft needs to stop rotating and the control motor (22) is energized and reversed, the stop external gear (20) drives the limit bracket (9) and the annular planetary permanent magnet (1) to rotate in the same direction. This drives the rotating stop magnetic block (16) to reach the position of the stop positioning magnetic block (24) and magnetically positioned. After the position is magnetically positioned, the power is cut off, and the same polarity sector permanent magnet (3) and the opposite polarity sector permanent magnet (2) leave the junction of the large and small circular sections of the two metal tracks (10). Figure 4 ), so that the side magnetic poles of the two ring planetary permanent magnets (1) at the junction are simultaneously open, and their two relative magnetic forces cancel each other out, causing the output shaft to stop rotating; when the machine needs to be turned on, the control motor (22) is powered on and rotates in the forward direction and then powered off, driving the same polarity sector permanent magnet (3) and the opposite polarity sector permanent magnet (2) to return to their positions, and are magnetically positioned by the operation positioning magnetic block (23).

Claims

1. A tracked magnetic motor for axial closed-circuit and open-circuit magnetic field applications, comprising a gear ring fixed to the stator, a planetary carrier with an output shaft, the circumference and width of which are greater than the outer diameter circumference and width of the planetary permanent magnet roller, the outer edge segments maintaining consistent curvature under pressure rolling conditions, and an elliptical steel track whose inner edge partially encloses a planetary permanent magnet roller, an arc-shaped steel track fixed to the planetary carrier whose arc-shaped magnetic poles attract the outer edge of the steel track located at the junction of the large circular segment on one side of the gear ring and the small circular segment on the side of the planetary permanent magnet roller, causing the track teeth at both ends of its outer edge to mesh tightly with the half-teeth of the gear ring and form a magnetic action distance with the outer edge surface of the metal track, as well as a top wheel, accessories, and a stopping device, characterized in that: The planetary permanent magnet roller comprises multiple identical, axially magnetized, and axially spaced, axially magnetized, with their side magnetic poles corresponding to the same or opposite poles of each transition permanent magnet, concentrically fixed on the planetary axis (6) and supported by the planetary carrier (5) for rotation; multiple identical, axially magnetized, and axially magnetized, located at the junction of the large circular section of the steel metal track (10) on one side of the transition permanent magnet (18) and the small circular section on the planetary permanent magnet roller side, respectively, and concentrically fixed in parallel by limiting brackets, independently limited to rotating around the circular planetary permanent magnet (1), with each magnetic pole face generating a repulsive magnetic effect on the magnetic pole face of each circular planetary permanent magnet; and large circular section on the other side of the metal track (10) corresponding to the transition permanent magnet (18) and small circular section on the planetary permanent magnet roller side. The ring planetary permanent magnets (1) at the junction are fixed together in parallel by the same limiting bracket (9) that fixes the same chromatic pole sector permanent magnets (3), rotate concentrically with the ring planetary permanent magnets (1), and each magnetic pole face generates an attractive magnetic effect on the magnetic pole face of each ring planetary permanent magnet (1). The accessory is an additional permanent magnet (15) fixed to the planetary carrier (5), each magnetic pole face corresponding to the same side magnetic pole of each ring planetary permanent magnet (1), generating a magnetic effect on the outer edge of the small circular segment of the metal track (10) and forming a magnetic effect distance with its outer edge. The stopping device is an electric or manual device that is connected to the stator external rotation device and the sector permanent magnet limiting bracket (9) inside the stator and changes the magnetic effect position of the same chromatic pole sector permanent magnets (3) and the different chromatic pole sector permanent magnets (2).

2. A tracked magnetic motor for axial closed-circuit and open-circuit magnetic field applications according to claim 1, characterized in that: The lateral magnetic poles of each ring planetary permanent magnet (1) are in a state of mutual repulsion with each other.

3. A tracked magnetic motor for axial closed-circuit and open-circuit magnetic field applications according to claim 2, characterized in that: The same-pole sector permanent magnet (3) and different-pole sector permanent magnet (2) that generate magnetic effects on the side magnetic poles between the planetary permanent magnets (1) are sector permanent magnets with positive-angle magnetic surfaces (Fig. 5).

4. A tracked magnetic motor for axial closed-circuit and open-circuit magnetic field applications according to claim 1, characterized in that: The stopping device is an electric control device that drives the external control motor (22) to engage the internal stop external connection center gear (21) and the stop external connection gear (20) in the stator. The limit bracket external connection screw (19) fixed with the stop external connection gear (20) passes through the arc-shaped strip hole on the planetary carrier (5) and is fastened to the limit bracket external connection screw hole (14). The rotating stop magnetic block (16) fixed to the other end of the limit bracket (9) forms a magnetic attraction gap with the running positioning magnetic block (23) and the stop positioning magnetic block (24) fixed on the planetary carrier (10).

5. A tracked magnetic motor for axial closed-circuit and open-circuit magnetic field applications according to claim 4, characterized in that: When the machine is stopped, the control motor (22) is powered on and rotates in the reverse direction and then powered off. When the machine is started, the control motor (22) is powered on and rotates in the forward direction and then powered off.

Images