Automatic turning gear

Abstract

The invention discloses an automatic turning gear. The automatic turning gear comprises a mounting seat, a driving mechanism and a shifting assembly, wherein the shifting assembly is matched with a ratchet wheel mounted on a motor rotor to drive the motor rotor to rotate; the shifting assembly and the driving mechanism are both mounted on the mounting seat, and the driving mechanism drives the shifting assembly to swing; the shifting assembly comprises a first pawl and a second pawl, and the first pawl and the second pawl are both rotationally connected to the mounting base. The driving mechanism drives the first pawl and the second pawl to swing back and forth. And therefore, the occupied space of the whole automatic turning gear is saved, the size is smaller and more flexible, and installation is convenient. Torsion borne by the first pawl and the second pawl is reduced, and starting is more convenient and faster. And the tooth beating phenomenon between the second pawl and the ratchet wheel and between the first pawl and the ratchet wheel is avoided, so that the turning process is more stable and safer, the service lives of the pawls and the ratchet wheel are prolonged, and the maintenance cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of steam turbine generator overhaul, in particular to an automatic turning device. Background Art

[0002] During the operation and maintenance of nuclear power plants, steam turbine generator overhaul is a critical and complex task. Traditionally, turbine generator rotor cranking relies primarily on manual cranking tools, which are not only cumbersome and labor-intensive, but also difficult to maintain speed stability and accuracy during the cranking process. Especially in large turbine generators, where the rotor weight and inertia are significant, manual cranking is even more difficult and prone to safety hazards.

[0003] With the development of automation technology, a variety of automatic turning devices have appeared on the market. However, most of these devices have problems such as high torque, difficulty in starting, large size and gear chipping, which affect the service life of the motor rotor and turning tools and increase the cost of maintenance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic winch device.

[0005] The technical solution adopted by the present invention to solve its technical problems is: constructing an automatic cranking device, including: a mounting seat, a driving mechanism and a toggle assembly that cooperates with a ratchet mounted on a motor rotor to drive the motor rotor to rotate; the toggle assembly and the driving mechanism are both mounted on the mounting seat, and the driving mechanism drives the toggle assembly to swing; the toggle assembly includes: a first pawl and a second pawl, and the first pawl and the second pawl are both rotatably connected to the mounting seat; the driving mechanism drives the first pawl and the second pawl to swing back and forth, so that the top ends of the first pawl and the second pawl alternately extend into the tooth roots of the ratchet to drive the motor rotor to rotate.

[0006] Furthermore, the driving mechanism includes: a power source, a toggle member and an elastic member, the power source is installed on the mounting seat, the toggle member is rotatably connected to the mounting seat, and is connected to the output end of the power source, driving the first pawl and the second pawl to flip and swing alternately; the elastic member is installed between the first pawl and the second pawl and the mounting seat, so that the first pawl and the second pawl are always in contact with the ratchet.

[0007] Furthermore, the toggle member includes: a transmission shaft, a first cam and a second cam, the transmission shaft is connected to the output end of the power source, and the first cam and the second cam are fixedly mounted on the transmission shaft; the arc surface of the second cam and the transmission shaft on the close side is in the same direction as the arc surface of the first cam and the transmission shaft on the far side; the elastic member squeezes the top ends of the first pawl and the second pawl at different tooth roots of the ratchet, so that the first cam and the second cam are always in contact with the corresponding first pawl and second pawl; through the rotation of the first cam and the second cam, the top ends of the first pawl and the second pawl are reciprocated and extended into different tooth roots of the ratchet.

[0008] Furthermore, the arc surfaces of the first cam and the second cam each include at least one working section that lifts up the corresponding first pawl or the second pawl, and a free section that follows the first pawl or the second pawl to fall. When the first pawl contacts the working section of the first cam, the second pawl contacts the free section of the second cam.

[0009] Furthermore, the mounting base includes: a shell and a limit frame, one end of the limit frame is rotatably connected to the shell, and the first pawl and the second pawl are both rotatably connected to the other end of the limit frame, cooperating with the elastic member to limit the swing amplitude of the first pawl and the second pawl; so that during the process of the working section of the first cam lifting the first pawl, the first pawl extending into the tooth root pushes the motor rotor to rotate in an arc shape, and at the same time, the second pawl follows the free section of the second cam under the action of the elastic member and falls back to the tooth root below.

[0010] Furthermore, the shifting member further includes a first lubricating sleeve disposed between the first pawl and the first cam, and a second lubricating sleeve disposed between the second pawl and the second cam.

[0011] Furthermore, the limit frame includes: a limit rod, a swing rod and a connecting piece, the limit rod is installed in the shell, one end of the two swing rods are rotatably connected to the limit rod, and the other ends of the two swing rods are correspondingly rotatably connected to the two connecting pieces; one of the connecting pieces connects the first pawl and the first lubricating sleeve together, and limits the first lubricating sleeve on the arc surface of the first cam; the other connecting piece connects the second pawl and the second lubricating sleeve together, and limits the second lubricating sleeve on the arc surface of the second cam.

[0012] Furthermore, the automatic cranking device also includes a manual component, which includes: a toggle shaft, a first extrusion block and a second extrusion block. The toggle shaft is rotatably connected to the mounting seat, and the first extrusion block and the second extrusion block are both fixedly mounted on the toggle shaft, corresponding to the positions of the first pawl and the second pawl; the toggle shaft is rotated to make the first extrusion block and the second extrusion block contact with the corresponding first pawl and second pawl, so that the first pawl and / or the second pawl flip and swing to drive the motor rotor to rotate.

[0013] Furthermore, the automatic cranking device also includes a speed measuring device installed on the mounting seat.

[0014] Furthermore, the automatic cranking device also includes a stabilizing component installed on the mounting seat, and the stabilizing component includes: a first stabilizing block and a second stabilizing block, the first stabilizing block and the second stabilizing block are both installed on the mounting seat, the first stabilizing block is in contact with the first pawl, and the second stabilizing block is in contact with the second pawl; the first stabilizing block and the second stabilizing block are both surrounded by smooth edges.

[0015] The implementation of the present invention has the following beneficial effects:

[0016] The present application drives the first pawl and the second pawl to swing back and forth through a driving mechanism, so that the top ends of the first pawl and the second pawl alternately extend into the tooth roots of the ratchet to drive the motor rotor to rotate. The first pawl and the second pawl can each swing at a smaller angle to drive the motor rotor to rotate, thereby saving the space occupied by the entire automatic cranking device, making the volume more compact and flexible, and easy to install. The torque applied to the first pawl and the second pawl is reduced, making it easier and faster to start. Since the first pawl and the second pawl each time the first pawl or the second pawl drives the motor rotor to rotate, the second pawl or the first pawl will fall back to different tooth roots of the ratchet, so that the second pawl or the first pawl pushes the ratchet to rotate from the tooth roots each time, avoiding the tooth-jamming phenomenon between the second pawl and the first pawl and the ratchet, and making the cranking process more stable and safe, extending the service life of each pawl and saving maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] In the attached figure:

[0019] Figure 1is a schematic diagram of the installation position of the automatic turning device in some embodiments of the present invention;

[0020] Figure 2 This is a front view of the installation position of the automatic turning device of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the automatic turning device of the present invention;

[0022] Figure 4 It is a structural diagram of the driving mechanism and the toggle assembly in the present invention;

[0023] Figure 5 It is a schematic exploded view of the structure of the toggle assembly and toggle member in the present invention;

[0024] Figure 6 It is a structural schematic diagram of the limiting frame in the present invention;

[0025] Figure 7 2. It is a schematic structural diagram of the first pawl and the second pawl in the present invention;

[0026] Figure 8 It is a structural schematic diagram of the first cam and the second cam in the present invention.

[0027] Description of the marks in the figure

[0028] Mounting base 1, housing 11, limiting frame 12, limiting rod 121, swinging rod 122, connecting member 123, driving mechanism 2, power source 21, toggle member 22, transmission shaft 221, first cam 222, second cam 223, first lubricating sleeve 224, second lubricating sleeve 225, arc surface 226, working section 2261, free section 2262, elastic member 23, toggle assembly 3, first pawl 31, second pawl 32, motor rotor 4, ratchet 5, manual assembly 6, toggle shaft 61, first extrusion block 62, second extrusion block 63, toggle rod 64, speed measuring device 7, stabilizing assembly 8, first stabilizing block 81, and second stabilizing block 82. DETAILED DESCRIPTION

[0029] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0030] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] In the following description, specific details such as particular system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0032] See also Figures 1 to 7 An automatic cranking device according to a first embodiment of the present invention includes a mounting base 1, a drive mechanism 2, and a toggle assembly 3 that cooperates with a ratchet wheel 5 mounted on a motor rotor 4 to drive the motor rotor 4 to rotate. The toggle assembly 3 and the drive mechanism 2 are both mounted on the mounting base 1, and the drive mechanism 2 drives the toggle assembly 3 to swing. The toggle assembly 3 includes a first pawl 31 and a second pawl 32, both of which are rotatably connected to the mounting base 1. The drive mechanism 2 drives the first pawl 31 and the second pawl 32 to swing back and forth, so that the top ends of the first pawl 31 and the second pawl 32 alternately extend into the roots of the teeth of the ratchet wheel 5, thereby driving the motor rotor 4 to rotate.

[0033] In this application, the driving mechanism 2 drives the first pawl 31 and the second pawl 32 to swing back and forth, so that the top ends of the first pawl 31 and the second pawl 32 alternately extend into the tooth roots of the ratchet wheel 5 to drive the motor rotor 4 to rotate. The driving mechanism 2 drives the first pawl 31 to extend into the tooth roots of the ratchet wheel 5 and rotate upward around the motor rotor 4 while swinging in an arc, so that the first pawl 31 pushes the ratchet wheel 5 upward in an arc to rotate clockwise. At the same time, the second pawl 32 falls back to a different tooth root on the ratchet wheel 5 under the action of the driving mechanism 2. At this time, the driving mechanism 2 drives the ratchet wheel 5 to rotate through the first pawl 31 to achieve turning.

[0034] Then, the driving mechanism 2 drives the second pawl 32 that has fallen back to a different tooth root on the ratchet 5 to push the ratchet 5 upward in an arc shape to rotate clockwise. At the same time, the first pawl 31 falls back to the next tooth root of the ratchet 5 under the action of the driving mechanism 2. At this time, the driving mechanism 2 drives the ratchet 5 to crank through the second pawl 32. The whole process is that when the driving mechanism 2 drives the first pawl 31 to swing upward in a clockwise direction to rotate the ratchet 5, the driving mechanism 2 simultaneously drives the second pawl 32 to swing downward in a counterclockwise direction to fall back to the next ratchet tooth of the ratchet 5, completing the cranking action of the first pawl 31. Afterwards, the driving mechanism 2 drives the second pawl 32 that has fallen back into the next ratchet tooth of the ratchet 5 to swing upward in a clockwise direction to drive the ratchet 5 to rotate. At the same time, the driving mechanism 2 drives the first pawl 31 to swing downward in a counterclockwise direction to fall back into the next ratchet tooth of the ratchet 5, completing the turning action of the second pawl 32. In this way, the driving mechanism 2 drives the top ends of the first pawl 31 and the second pawl 32 to alternately extend into the tooth root of the ratchet 5 to drive the motor rotor 4 to rotate.

[0035] By swinging the first pawl 31 and the second pawl 32 at a relatively small angle, the motor rotor 4 can be driven to rotate, thereby saving space for the entire automatic cranking device, making it more compact and flexible, and easier to install. Since the first pawl 31 and the second pawl 32 can drive the motor rotor 4 to rotate by swinging at a relatively small angle, the torque applied to the first pawl 31 and the second pawl 32 is reduced, making startup easier and faster. Since the first pawl 31 and the second pawl 32 each fall back to different tooth roots of the ratchet 5 while the first pawl 31 or the second pawl 32 is driving the motor rotor 4 to rotate, the second pawl 32 or the first pawl 31 each falls back to different tooth roots of the ratchet 5. This allows the second pawl 32 or the first pawl 31 to push the ratchet 5 to rotate each time from the tooth roots they extend into, thus avoiding tooth-clutching between the second pawl 32 and the first pawl 31 and the ratchet 5. This makes the cranking process more stable and safe, extends the service life of each pawl, and saves maintenance costs.

[0036] In which, the driving mechanism 2 can be a turntable with a limiting ring groove with a specific path. By limiting the second pawl 32 and the first pawl 31 in their respective limiting ring grooves, the rotating turntable drives the second pawl 32 and the first pawl 31 to swing back and forth alternately through the limiting ring grooves, so that the driving mechanism 2 drives the motor rotor 4 to rotate through the second pawl 32 and the first pawl 31.

[0037] See also Figures 1 to 7 In some embodiments, the drive mechanism 2 includes a power source 21, a toggle member 22, and an elastic member 23. The power source 21 is mounted on the mounting base 1. The toggle member 22 is rotatably connected to the mounting base 1 and is connected to the output end of the power source 21, driving the first pawl 31 and the second pawl 32 to alternately flip and swing. The elastic member 23 is installed between the first pawl 31 and the second pawl 32 and the mounting base 1 to ensure that the first pawl 31 and the second pawl 32 are always in contact with the ratchet 5.

[0038] The present invention is mounted on the mounting base 1 via a power source 21. The toggle member 22 is rotatably connected to the mounting base 1 and is connected to the output end of the power source 21, driving the first pawl 31 and the second pawl 32 to alternately flip and swing. The elastic member 23 is installed between the first pawl 31 and the second pawl 32 and the mounting base 1 to ensure that the first pawl 31 and the second pawl 32 are always in contact with the ratchet 5. The power source 21 drives the toggle member 22 to rotate, so that the rotating toggle member 22 drives the first pawl 31 and the second pawl 32 to flip and swing alternately. The alternately flipping and swinging first pawl 31 and second pawl 32 drive the ratchet 5 alternately. When the first pawl 31 drives the ratchet 5 to rotate, the second pawl 32 will not be subjected to the torque of the ratchet 5, so that the first pawl 31 and the second pawl 32 alternately bear the torque of the ratchet 5, reducing the working time and working torque of the first pawl 31 and the second pawl 32, thereby reducing the wear on the first pawl 31 and the second pawl 32, extending the service life, and improving the stability and safety during long-term cranking.

[0039] By installing an elastic member 23 between the first pawl 31 and the second pawl 32 and the mounting base 1, the first pawl 31 and the second pawl 32 are always in contact with the ratchet 5. The elastic member 23 prevents the first pawl 31 and the second pawl 32 from being separated from the ratchet 5, making the first pawl 31 and the second pawl 32 more stable in the process of driving the ratchet 5 to rotate, further reducing the phenomenon of tooth playing and improving safety.

[0040] The power source 21 can be a pneumatic motor, an electric motor, or an engine. A pneumatic motor is not afraid of stalling and can start smoothly even when the motor rotor 4 has significant inertia, reducing the risk of equipment damage. Its compact structure facilitates transportation and installation, ensuring it will not loosen or fall off during long-term operation, thereby improving the reliability and service life of the equipment. A motor is more affordable, saving manufacturing costs. An engine can handle more complex environments and has greater adaptability.

[0041] See also Figures 1 to 7 In some embodiments, the toggle member 22 includes a transmission shaft 221, a first cam 222, and a second cam 223. The transmission shaft 221 is connected to the output end of the power source 21. The first cam 222 and the second cam 223 are both fixedly mounted on the transmission shaft 221. The arc surface 226 of the second cam 223 and the transmission shaft 221 on the side close to the second cam 223 is located in the same direction as the arc surface 226 of the first cam 222 and the transmission shaft 221 on the side away from the first cam 222. The elastic member 23 presses the top ends of the first pawl 31 and the second pawl 32 against different tooth roots of the ratchet 5, so that the first cam 222 and the second cam 223 are always in contact with the corresponding first pawl 31 and the second pawl 32. Through the rotation of the first cam 222 and the second cam 223, the top ends of the first pawl 31 and the second pawl 32 reciprocate and extend into different tooth roots of the ratchet 5.

[0042] In the present application, the first cam 222 and the second cam 223 are fixedly mounted on the transmission shaft 221, and the arc surface 226 of the second cam 223 and the transmission shaft 221 is located in the same direction as the arc surface 226 of the first cam 222 and the transmission shaft 221. The rotating first cam 222 and the second cam 223 cooperate with the elastic member 23 to drive the first pawl 31 and the second pawl 32 to flip and swing.

[0043] The arc surface 226 on the side close to the second cam 223 and the transmission shaft 221 is in the same direction as the arc surface 226 on the side away from the first cam 222 and the transmission shaft 221. When the transmission shaft 221 drives the first cam 222 to rotate to the arc surface 226 on the side away from the transmission shaft 221, the arc surface 226 on the side away from the transmission shaft 221 lifts the first pawl 31, allowing the first pawl 31 to move upward while overcoming the elastic force of the elastic member 23 and swinging in a clockwise arc shape, pushing the ratchet 5 to rotate clockwise. At the same time, the transmission shaft 221 drives the second cam 223 to rotate to the arc surface 226 on the side close to the transmission shaft 221, causing the second pawl 32 to move downward along the arc surface 226 of the second cam 223 while swinging in a counterclockwise arc shape, and finally extending into the ratchet teeth below the ratchet 5, preparing for the second pawl 32 to push the ratchet 5 clockwise. By adopting the first cam 222 and the second cam 223 to drive the first pawl 31 and the second pawl 32 to perform a reciprocating swing structure, the overall structure is simpler and occupies less space, which can effectively reduce the size of the equipment, improve the accuracy and speed during the turning process, make each stroke setting more accurate, the mechanical transmission efficiency high, and the structural movement reliable, and the elastic member 23 allows the first pawl 31 and the second pawl 32 to be strictly controlled by the contours of the first cam 222 and the second cam 223, without the need for complex intermediate transmission links, reducing the risk of failure due to cumulative errors, and further improving the stability of operation.

[0044] The present application uses the elastic member 23 to press the top ends of the first pawl 31 and the second pawl 32 against different tooth roots of the ratchet 5, so that the first pawl 31 and the second pawl 32 are always in contact with the corresponding first cam 222 and the second cam 223. The first cam 222 and the second cam 223 rotate, so that the top ends of the first pawl 31 and the second pawl 32 reciprocate and extend into different tooth roots of the ratchet 5. By ensuring that the first pawl 31 and the second pawl 32 are always in contact with the corresponding first cam 222 and the second cam 223, the stability during the turning process is further improved, the occurrence of tooth knocking is avoided, and the service life of the entire device and the ratchet 5 is extended.

[0045] See also Figures 1 to 8 In some embodiments, the arc surface 226 of the first cam 222 and the second cam 223 includes at least one working section 2261 that lifts up the corresponding first pawl 31 or the second pawl 32, and a free section 2262 that follows the first pawl 31 or the second pawl 32 to fall. When the first pawl 31 contacts the working section 2261 of the first cam 222, the second pawl 32 contacts the free section 2262 of the second cam 223.

[0046] In the present application, the arc surface 226 of the first cam 222 and the second cam 223 includes at least one working section 2261 that lifts the corresponding first pawl 31 or second pawl 32, and a free section 2262 that follows the first pawl 31 or second pawl 32 to fall. The arc surface 226 can be set as a circulating surface with multiple working sections 2261 and multiple free sections 2262 arranged at intervals, so that the first cam 222 rotates one circle and drives the first pawl 31 to swing upward multiple times and swing downward to accumulate force. At the same time, the second cam 223 rotates one circle and drives the second pawl 32 to swing downward multiple times to accumulate force and swing upward, thereby improving the braking efficiency of the motor rotor 4.

[0047] When the arc surface 226 of the first cam 222 and the second cam 223 are both provided with a working section 2261 that lifts up the corresponding first pawl 31 and the second pawl 32, and a free section 2262 for the first pawl 31 and the second pawl 32 to follow the fall, the structure of the first cam 222 and the second cam 223 can be made smaller and more compact, saving the occupied space and the production cost, and driving the first pawl 31 and the second pawl 32 to swing more smoothly and smoothly, thereby improving the accuracy of the response.

[0048] See also Figures 1 to 6 In some embodiments, the mounting base 1 includes a housing 11 and a limiting frame 12. One end of the limiting frame 12 is rotatably connected to the housing 11. The first pawl 31 and the second pawl 32 are both rotatably connected to the other end of the limiting frame 12, and cooperate with the elastic member 23 to limit the swing amplitude of the first pawl 31 and the second pawl 32. When the working section 2261 of the first cam 222 pushes the first pawl 31 up, the first pawl 31 inserted into the tooth root pushes the motor rotor 4 to rotate in an arc shape. At the same time, the second pawl 32, under the action of the elastic member 23, follows the free section 2262 of the second cam 223 and falls back into the tooth root below.

[0049] In the present application, one end of the limit frame 12 is rotatably connected to the shell 11, and the first pawl 31 and the second pawl 32 are both rotatably connected to the other end of the limit frame 12, cooperating with the elastic member 23 to limit the swing amplitude of the first pawl 31 and the second pawl 32, wherein the limit frame 12 limits the first pawl 31 and the second pawl 32 separately so that they do not affect each other.

[0050] When the working section 2261 of the first cam 222 lifts the first pawl 31, one end of the limit frame 12 on one side of the first cam 222 rotates counterclockwise around the connection point with the shell 11, so that the first cam 222 drives the first pawl 31 to move upward. While the first pawl 31 moves upward, the elastic member 23 generates elastic force to limit the upward swing amplitude of the first pawl 31, so that the first pawl 31 rotates clockwise while following the other end of the limit frame 12 to rotate upward, pushing the ratchet 5 to rotate clockwise. When the first pawl 31 pushes the ratchet 5 to rotate clockwise, the second pawl 32 follows the free section 2262 of the second cam 223 to fall back into the tooth root below. During the falling process, one end of the limit frame 12 on the side of the second cam 223 rotates clockwise around the connection point with the shell 11, and the elastic member 23 causes the second pawl 32 to rotate downward along with the other end of the limit frame 12. The clockwise rotating ratchet 5 will squeeze the second pawl 32, causing the second pawl 32 to rotate counterclockwise at the other end of the limit frame 12. During this process, the second pawl 32 will always be in contact with the clockwise rotating ratchet 5. Under the action of the elastic member 23, when the second pawl 32 reaches the next tooth root of the ratchet 5, the elastic member 23 will drive the second pawl 32 to rotate clockwise at the other end of the limit frame 12, so that the top end of the second pawl 32 is inserted into the tooth root, preparing for the second pawl 32 to drive the ratchet 5 to rotate. Similarly, when the working section 2261 of the second cam 223 lifts the second pawl 32 to drive the ratchet 5, the first pawl 31 follows the free section 2262 of the first cam 222 and falls back to the tooth root below, preparing for the first pawl 31 to drive the ratchet 5. This improves the braking efficiency of the motor rotor 4, reduces the torque on the first and second pawls 31, 32, and extends their service life. The entire structure is more compact and stable, making it easier to install.

[0051] Among them, the shell 11 wraps the limit frame 12, the first cam 222, the second cam 223, part of the first pawl 31 and part of the second pawl 32, thereby avoiding the invasion of dust, further extending the service life and improving safety. Grease can also be added to the shell 11 to further extend the service life and improve the stability and smoothness during the turning process.

[0052] See also Figures 1 to 7 In some embodiments, the toggle member 22 further includes a first lubricating sleeve 224 disposed between the first pawl 31 and the first cam 222 , and a second lubricating sleeve 225 disposed between the second pawl 32 and the second cam 223 .

[0053] The present application provides a first lubricating sleeve 224 disposed between the first pawl 31 and the first cam 222, and a second lubricating sleeve 225 disposed between the second pawl 32 and the second cam 223. The first lubricating sleeve 224 can prevent the first pawl 31 from directly contacting the first cam 222, thereby reducing wear between the first pawl 31 and the first cam 222, extending the service life, and improving the smoothness of operation. Similarly, the second lubricating sleeve 225 can prevent the second pawl 32 from directly contacting the second cam 223, thereby reducing wear between the second pawl 32 and the second cam 223, extending the service life, and improving the smoothness of operation.

[0054] The first lubricating sleeve 224 and the second lubricating sleeve 225 can be made of copper sleeves to reduce manufacturing costs. Bearings can also be used to improve smoothness during operation.

[0055] See also Figures 1 to 6 In some embodiments, the limiting frame 12 includes a limiting rod 121, a swinging rod 122, and a connecting member 123. The limiting rod 121 is mounted in the housing 11. One end of each of the two swinging rods 122 is rotatably connected to the limiting rod 121, and the other ends of the two swinging rods 122 are rotatably connected to the two connecting members 123. One of the connecting members 123 connects the first pawl 31 and the first lubricating sleeve 224, securing the first lubricating sleeve 224 on the arc surface 226 of the first cam 222. The other connecting member 123 connects the second pawl 32 and the second lubricating sleeve 225, securing the second lubricating sleeve 225 on the arc surface 226 of the second cam 223.

[0056] The present application is installed in the housing 11 via a limit rod 121, with one end of each of the two swinging rods 122 being rotatably connected to the limit rod 121, and the other ends of the two swinging rods 122 being correspondingly rotatably connected to two connecting members 123. The two swinging rods 122 and the two connecting members 123 respectively control the swing amplitude of the first pawl 31 and the second pawl 32, so that they do not affect each other. The use of a single limit rod 121 to rotatably install the two swinging rods 122 in the housing 11 further saves space occupied by the limit frame 12, making the entire device more compact, easier to install, and suitable for a variety of installation environments.

[0057] When the working section 2261 of the first cam 222 pushes up the first pawl 31, one end of the swing rod 122 on one side of the first cam 222 rotates counterclockwise around the limit rod 121, so that the first cam 222 drives the first pawl 31 to move upward. While the first pawl 31 moves upward, the elastic member 23 generates elastic force to limit the upward swing amplitude of the first pawl 31, so that the first pawl 31 rotates clockwise around the connecting member 123 while following the connecting member 123 to rotate upward at the other end of the swing rod 122, thereby pushing the ratchet 5 to rotate clockwise.

[0058] When the first pawl 31 pushes the ratchet 5 to rotate clockwise, the second pawl 32 follows the free section 2262 of the second cam 223 to fall back into the tooth root below. During the falling process, one end of the swing rod 122 on one side of the second cam 223 rotates clockwise around the limit rod 121, and the elastic member 23 causes the second pawl 32 to rotate downward along with the other end of the swing rod 122. The clockwise rotating ratchet 5 will squeeze the second pawl 32, causing the second pawl 32 to rotate counterclockwise on the connecting member 123. During this process, the second pawl 32 will always be in contact with the clockwise rotating ratchet 5. Under the action of the elastic member 23, when the second pawl 32 reaches the next tooth root of the ratchet 5, the elastic member 23 will drive the second pawl 32 to rotate clockwise on the connecting member 123, so that the top end of the second pawl 32 is inserted into the tooth root, preparing for the second pawl 32 to drive the ratchet 5 to rotate. The entire device has a more compact structure, a more stable operation process, and is easy to install.

[0059] In the present application, one of the connectors 123 connects the first pawl 31 and the first lubricating sleeve 224, securing the first lubricating sleeve 224 on the arc surface 226 of the first cam 222. Another connector 123 connects the second pawl 32 and the second lubricating sleeve 225, securing the second lubricating sleeve 225 on the arc surface 226 of the second cam 223. This can reduce the volume of the first pawl 31 and the second pawl 32, further reducing the space occupied by the entire device and making it easier to install.

[0060] See also Figures 1 to 5 In some embodiments, the automatic turning device further includes a manual assembly 6, which includes a toggle shaft 61, a first extrusion block 62, and a second extrusion block 63. The toggle shaft 61 is rotatably connected to the mounting base 1, and the first extrusion block 62 and the second extrusion block 63 are both fixedly mounted on the toggle shaft 61, corresponding to the positions of the first pawl 31 and the second pawl 32. The toggle shaft 61 is rotated to bring the first extrusion block 62 and the second extrusion block 63 into contact with the corresponding first pawl 31 and the second pawl 32, causing the first pawl 31 and / or the second pawl 32 to flip and swing, thereby driving the motor rotor 4 to rotate.

[0061] The present application is rotatably connected to the mounting base 1 by means of a toggle shaft 61. The first extrusion block 62 and the second extrusion block 63 are both fixedly mounted on the toggle shaft 61, corresponding to the positions of the first pawl 31 and the second pawl 32. The operator rotates the toggle shaft 61 counterclockwise to cause the toggle shaft 61 to drive the first extrusion block 62 and the second extrusion block 63 to rotate counterclockwise. The counterclockwise rotating first extrusion block 62 and the second extrusion block 63 will contact the bottom ends of the first pawl 31 and the second pawl 32.

[0062] When the counterclockwise rotating first extrusion block 62 contacts the first pawl 31, the first extrusion block 62 lifts the first pawl 31 and separates it from the first cam 222, causing the first pawl 31 to drive the swing rod 122 and the connecting member 123 on the same side to rotate counterclockwise around the limit rod 121. During the counterclockwise rotation of the swing rod 122, the first pawl 31 is blocked by the elastic member 23 and the limit frame 12, causing the first pawl 31 to swing clockwise around the connecting member 123, causing the first pawl 31 to rotate and swing in an arc shape around the center of the motor rotor 4, so that the first pawl 31 cooperates with the ratchet wheel 5 to push the motor rotor 4 to rotate clockwise. This completes a turning action of the motor rotor 4 by the first pawl 31. After that, the operator rotates the dial shaft 61 clockwise to reset the first extrusion block 62. After the extrusion of the first extrusion block 62 is removed, the elastic force generated by the elastic member 23 drives the first pawl 31 to reset, causing the first pawl 31 to fall back onto the first cam 222 and be inserted into the root of the ratchet wheel 5 at the starting position of the first pawl 31, preparing for the next drive of the motor rotor 4.

[0063] Similarly, when the counterclockwise rotating second extrusion block 63 contacts the second pawl 32, the second extrusion block 63 will lift the second pawl 32, causing the second pawl 32 to drive the swing rod 122 and the connecting member 123 on the same side to rotate counterclockwise around the limit rod 121. During the counterclockwise rotation of the swing rod 122, due to the obstruction of the elastic member 23 and the limit frame 12, the second pawl 32 swings clockwise around the connecting member 123, causing the second pawl 32 to rotate and swing in an arc shape around the center of the motor rotor 4, so that the second pawl 32 cooperates with the ratchet 5 to push the motor rotor 4 to rotate clockwise. This completes a cranking action of the motor rotor 4 by the second pawl 32. When the second extrusion block 63 is reset, the second pawl 32 will return to its starting position under the action of the elastic member 23, preparing for the next drive of the motor rotor 4. This allows manual cranking in emergency situations, improving the risk resistance of the entire device and making it simple, convenient and labor-saving to operate.

[0064] Among them, the first extrusion block 62 and the second extrusion block 63 can be set in different shapes. When the first extrusion block 62 and the second extrusion block 63 have the same shape as the first cam 222 and the second cam 223, the first extrusion block 62 and the second extrusion block 63 both have a working section 2261 for squeezing the first pawl 31 or the second pawl 32, and a free section 2262 that does not contact the first pawl 31 or the second pawl 32. By rotating the dial shaft 61 counterclockwise, the first pawl 31 and the second pawl 32 alternately drive the motor rotor 4 to rotate during the manual cranking process.

[0065] The first extrusion block 62 and the second extrusion block 63 can also be set to be parallel to each other, and the length of the second extrusion block 63 is greater than the length of the first extrusion block 62, so that the first extrusion block 62 and the second extrusion block 63 can simultaneously touch the bottom ends of the first pawl 31 and the second pawl 32, so that the first extrusion block 62 and the second extrusion block 63 can synchronously drive the first pawl 31 and the second pawl 32 to flip and swing, thereby reducing the torque borne by the first pawl 31 and the second pawl 32, further reducing the wear of the first pawl 31 and the second pawl 32, and extending the service life. Different shapes of the first extrusion block 62 and the second extrusion block 63 can be selected according to the actual use situation on site, so that the first pawl 31 and the second pawl 32 can synchronously or alternately turn the motor rotor 4, thereby expanding the scope of application and making it more diverse and diversified.

[0066] A toggle rod 64 can be detachably mounted on the toggle shaft 61 , and the toggle rod 64 extends the operator's force application point, allowing the operator to rotate the toggle shaft 61 more effortlessly and conveniently.

[0067] See also Figures 1 to 3 In some embodiments, the automatic cranking device further includes a speed measuring device 7 mounted on the mounting base 1 .

[0068] The present application uses a speed measuring device 7 mounted on a mounting base 1. The speed measuring wheel of the speed measuring device 7 contacts the outer surface of the motor rotor 4, and the speed measuring wheel is driven to rotate by friction. The rotation speed of the speed measuring wheel is used to obtain the rotation speed of the motor rotor 4 during cranking. The speed of the cranking can then be more accurately controlled by the power source 21, thereby improving the accuracy and safety of the cranking process. This reduces labor intensity and facilitates operation.

[0069] See also Figures 1 to 5In some embodiments, the automatic turning device further includes a stabilizing assembly 8 mounted on the mounting base 1. The stabilizing assembly 8 includes a first stabilizing block 81 and a second stabilizing block 82. The first stabilizing block 81 and the second stabilizing block 82 are both mounted on the mounting base 1. The first stabilizing block 81 contacts the first pawl 31, and the second stabilizing block 82 contacts the second pawl 32. The first stabilizing block 81 and the second stabilizing block 82 have smooth edges around them.

[0070] In the present application, both the first stabilizing block 81 and the second stabilizing block 82 are installed on the mounting base 1. The first stabilizing block 81 contacts the first pawl 31, and the second stabilizing block 82 contacts the second pawl 32. The contact between the first stabilizing block 81 and the first pawl 31 can reduce the shaking of the first pawl 31 during the swinging process, making the first pawl 31 more stable and accurate during the rotation of the drive motor rotor 4, and also reducing the generation of noise. During the fallback process, the first pawl 31 and the first cam 222 can cooperate more stably and firmly. Similarly, the contact between the second stabilizing block 82 and the second pawl 32 can reduce the shaking of the second pawl 32 during the swinging process, making the second pawl 32 more stable and accurate during the rotation of the drive motor rotor 4. During the fallback process, the second pawl 32 and the second cam 223 can cooperate more stably and firmly.

[0071] In the present application, the first stabilizing block 81 and the second stabilizing block 82 are all provided with rounded edges. The rounded edges of the first stabilizing block 81 and the second stabilizing block 82 can reduce the wear of the first pawl 31 and the second pawl 32 during the swinging process, thereby extending the service life of the first pawl 31, the second pawl 32, the first stabilizing block 81 and the second stabilizing block 82, and improving the stability and smoothness of the turning process.

[0072] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. An automatic turning device, characterized in that: include: A mounting seat (1), a driving mechanism (2), and a toggle assembly (3) that cooperates with a ratchet (5) mounted on a motor rotor (4) to drive the motor rotor (4) to rotate; the toggle assembly (3) and the driving mechanism (2) are both mounted on the mounting seat (1), and the driving mechanism (2) drives the toggle assembly (3) to swing; The toggle assembly (3) comprises: a first pawl (31) and a second pawl (32), wherein the first pawl (31) and the second pawl (32) are both rotatably connected to the mounting seat (1); the driving mechanism (2) drives the first pawl (31) and the second pawl (32) to swing back and forth, so that the top ends of the first pawl (31) and the second pawl (32) alternately extend into the tooth roots of the ratchet wheel (5) to drive the motor rotor (4) to rotate.

2. The automatic turning device according to claim 1, characterized in that: The driving mechanism (2) comprises: a power source (21), a toggle member (22) and an elastic member (23); the power source (21) is mounted on the mounting seat (1); the toggle member (22) is rotatably connected to the mounting seat (1) and is connected to the output end of the power source (21), driving the first pawl (31) and the second pawl (32) to alternately flip and swing; The elastic member (23) is installed between the first pawl (31), the second pawl (32) and the mounting seat (1), so that the first pawl (31) and the second pawl (32) are always in contact with the ratchet (5).

3. The automatic turning device according to claim 2, characterized in that: The shifting member (22) comprises: a transmission shaft (221), a first cam (222) and a second cam (223); the transmission shaft (221) is connected to the output end of the power source (21); the first cam (222) and the second cam (223) are both fixedly mounted on the transmission shaft (221); the arc surface (226) on the side close to the second cam (223) and the transmission shaft (221) is located in the same direction as the arc surface (226) on the side away from the first cam (222) and the transmission shaft (221); The elastic member (23) presses the top ends of the first pawl (31) and the second pawl (32) against different tooth roots of the ratchet (5), so that the first cam (222) and the second cam (223) are always in contact with the corresponding first pawl (31) and the second pawl (32); and the top ends of the first pawl (31) and the second pawl (32) are reciprocally extended into different tooth roots of the ratchet (5) by the rotation of the first cam (222) and the second cam (223).

4. The automatic turning device according to claim 3, characterized in that: The arc surface (226) of the first cam (222) and the second cam (223) both include at least one working section (2261) that is provided to lift up the corresponding first pawl (31) or the second pawl (32), and a free section (2262) that follows the first pawl (31) or the second pawl (32) to fall. When the first pawl (31) contacts the working section (2261) of the first cam (222), the second pawl (32) contacts the free section (2262) of the second cam (223).

5. The automatic turning device according to claim 4, characterized in that: The mounting seat (1) comprises: a shell (11) and a limiting frame (12), one end of the limiting frame (12) is rotatably connected to the shell (11), and the first pawl (31) and the second pawl (32) are both rotatably connected to the other end of the limiting frame (12), and cooperate with the elastic member (23) to limit the swing amplitude of the first pawl (31) and the second pawl (32); When the working section (2261) of the first cam (222) lifts the first pawl (31), the first pawl (31) inserted into the tooth root pushes the motor rotor (4) to rotate in an arc shape, and at the same time, the second pawl (32) follows the free section (2262) of the second cam (223) under the action of the elastic member (23) and falls back to the tooth root below.

6. The automatic turning device according to claim 5, characterized in that: The shifting member (22) further comprises a first lubricating sleeve (224) arranged between the first pawl (31) and the first cam (222), and a second lubricating sleeve (225) arranged between the second pawl (32) and the second cam (223).

7. The automatic turning device according to claim 6, characterized in that: The limiting frame (12) comprises: a limiting rod (121), a swing rod (122) and a connecting piece (123); the limiting rod (121) is installed in the housing (11); one end of each of the two swing rods (122) is rotatably connected to the limiting rod (121); and the other ends of the two swing rods (122) are correspondingly rotatably connected to the two connecting pieces (123); One of the connecting members (123) connects the first pawl (31) and the first lubricating sleeve (224) together, and limits the first lubricating sleeve (224) on the arc surface (226) of the first cam (222); Another connecting member (123) connects the second pawl (32) and the second lubricating sleeve (225) together, and limits the second lubricating sleeve (225) on the arc surface (226) of the second cam (223).

8. The automatic turning device according to claim 2, characterized in that: The automatic turning device further comprises a manual assembly (6), the manual assembly (6) comprising: a toggle shaft (61), a first extrusion block (62) and a second extrusion block (63), the toggle shaft (61) being rotatably connected to the mounting seat (1), the first extrusion block (62) and the second extrusion block (63) being fixedly mounted on the toggle shaft (61), corresponding to the positions of the first pawl (31) and the second pawl (32); The shifting shaft (61) is rotated to bring the first extrusion block (62) and the second extrusion block (63) into contact with the corresponding first pawl (31) and the second pawl (32), so that the first pawl (31) and / or the second pawl (32) flip and swing to drive the motor rotor (4) to rotate.

9. The automatic turning device according to claim 1, characterized in that: The automatic cranking device further comprises a speed measuring device (7) mounted on the mounting seat (1).

10. The automatic turning device according to claim 1, characterized in that: The automatic turning device further comprises a stabilizing assembly (8) mounted on the mounting seat (1), the stabilizing assembly (8) comprising: a first stabilizing block (81) and a second stabilizing block (82), the first stabilizing block (81) and the second stabilizing block (82) both being mounted on the mounting seat (1), the first stabilizing block (81) being in contact with the first pawl (31), and the second stabilizing block (82) being in contact with the second pawl (32); and the first stabilizing block (81) and the second stabilizing block (82) both having smooth edges around their peripheries.

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