A heavy-load integrated servo electric cylinder

Abstract

The present invention provides a heavy-duty integrated servo electric cylinder, comprising a housing assembly, a rotor assembly, and a stator assembly. The rotor assembly comprises a screw component, a screw nut, a push rod component, a rotating shaft component, a magnet component, a front bearing, a rear bearing, and an adapter shaft; the screw nut is sleeved on the outside of the screw component and is threadedly matched with the screw component; a part of the push rod component is sleeved on the outside of the screw nut and is fixedly connected to the screw nut, and another part of the push rod component is sleeved on the outside of the screw component and has a spacing with the outer wall of the screw component; one end of the rotating shaft component is fixedly connected to one end of the screw component, and the other end of the rotating shaft component has an opening for allowing the other end of the screw component to extend out of the rotating shaft component; one end of the adapter shaft is inserted into the end of the rotating shaft component fixedly connected to the screw component, and is fixedly connected to the end of the screw component. The present invention replaces the pulley pair structure of the traditional servo electric cylinder with an integrated rotor structure to improve the overall reliability of the integrated servo electric cylinder.

Description

Technical Field

[0001] The invention relates to an integrated servo electric cylinder, in particular to a heavy-load integrated servo electric cylinder, and belongs to the technical field of servo electric cylinders. Background Art

[0002] Servo electric cylinders are used in a variety of industrial scenarios such as aerospace, industrial automation, and new energy vehicles. Their working principle is to convert the rotational motion of the motor into linear motion. The traditional servo electric cylinder connects the servo motor and the screw nut pair through a pulley pair and fixes them on their respective central axes. The rotational motion of the motor drives the pulley to make the screw nut move forward and backward in a linear manner. The Chinese invention patent with application number 2017111590449 discloses this typical structure. Servo electric cylinders with this structure, especially heavy-duty integrated servo electric cylinders, are prone to increased vibration noise due to belt wear or belt extension after long-term operation, or increased motion accuracy errors due to axial motion positioning deviations of the push rod, resulting in the thrust generated by the push rod fluctuating and repeated positioning being unstable; and the above-mentioned undesirable phenomena become more and more obvious as the servo electric cylinder works for a longer time. Therefore, in actual applications, it is necessary to perform regular maintenance on the servo electric cylinder, which undoubtedly increases the production and use costs in industrial scene applications. Summary of the invention

[0003] Based on the above background, the purpose of the present invention is to provide a heavy-load integrated servo electric cylinder, which replaces the pulley pair structure of the traditional servo electric cylinder with an integrated rotor structure, improves the overall reliability of the integrated servo electric cylinder, ensures its transmission stability and accuracy under heavy-load conditions, and significantly reduces the production cost of the integrated servo electric cylinder by reducing the number of components.

[0004] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0005] A heavy-load integrated servo electric cylinder comprises a housing assembly, a rotor assembly arranged in the housing assembly, and a stator assembly sleeved outside the rotor assembly and located in the housing assembly, wherein the stator assembly is fixedly connected to the housing assembly; the rotor assembly comprises a screw component, a screw nut, a push rod component, a rotating shaft component, a magnet component, a front bearing, a rear bearing and an adapter shaft; the screw nut is sleeved outside the screw component and is threadedly matched with the screw component; a part of the push rod component is sleeved outside the screw nut and is fixedly connected to the screw nut, and another part of the push rod component is sleeved outside the screw component and is connected to the screw component There is a spacing between the outer walls of the parts; the rotating shaft component is sleeved on the outside of the push rod component, one end of the rotating shaft component is fixedly connected to one end of the screw component, and the other end of the rotating shaft component has an opening for allowing the other end of the screw component to extend out of the rotating shaft component; the magnet component is circumferentially fixed to the outer wall of the rotating shaft component; the front bearing and the rear bearing are respectively arranged adjacent to the two ends of the rotating shaft component, the rotating shaft component is connected to the housing component through the front bearing and the rear bearing, and the rotating shaft component can rotate relative to the housing component; one end of the adapter shaft is inserted into the end of the rotating shaft component fixedly connected to the screw component, and is fixedly connected to the end of the screw component.

[0006] Preferably, the push rod component includes a push rod member and a fixing nut, the push rod member is a tubular structure, the push rod member is provided with a step portion, one end of the push rod member is fixedly connected to one end of the fixing nut through a thread, and the inner wall of the step portion of the push rod member and the inner wall of the end portion of the fixing nut respectively abut against the two ends of the screw nut.

[0007] Preferably, a plurality of protrusions and a plurality of first grooves are provided on the surface of the rotating shaft component, and the protrusions and the first grooves are alternately arranged in sequence and surround the surface of the rotating shaft component in a circumferential direction.

[0008] Preferably, a plurality of second grooves are further provided on the surface of the rotating shaft component. The second grooves are arranged obliquely relative to the length direction of the rotating shaft component and surround the surface of the rotating shaft component in a circumferential direction.

[0009] Preferably, the protrusions and the first grooves arranged alternately in sequence are configured into at least two groups and are parallel to each other, the second grooves are configured into at least three groups and are parallel to each other, and at least one group of second grooves is located between two groups of protrusions and first grooves arranged alternately in sequence.

[0010] Preferably, the magnet component includes a plurality of electric cylinder magnets, each of which has an arc-shaped bottom surface that fits the curvature of the surface of the shaft component, and is circumferentially fixed to the surface of the shaft component. The two sides of each electric cylinder magnet respectively abut against two adjacent protrusions, and each electric cylinder magnet covers a first groove and multiple second grooves.

[0011] Preferably, the electric cylinder magnet comprises a first magnetic strip, a second magnetic strip, a third magnetic strip and a fourth magnetic strip, the first magnetic strip and the second magnetic strip are stacked, two third magnetic strips are provided and are respectively located on both sides of the stack composed of the first magnetic strip and the second magnetic strip, two fourth magnetic strips are provided and are respectively located on both sides of the two third magnetic strips, and the bottom surfaces of the second magnetic strip, the third magnetic strip and the fourth magnetic strip form a continuously extended arc bottom surface.

[0012] Preferably, the adapter shaft is provided with a screw connecting portion, a positioning step portion, a braking step portion and a feedback element mounting portion in sequence along a direction away from the screw component, the screw connecting portion is fixedly connected to the screw component, the positioning step portion is used to be inserted into and cooperate with the end of the rotating shaft component fixedly connected to the screw component, thereby limiting the radial displacement of the adapter shaft relative to the rotating shaft component, the braking step portion is used to install a brake, and the feedback element mounting portion is used to install a feedback element.

[0013] Preferably, the housing assembly includes a guide ring part, a front end cover, an electric cylinder housing, a rear end cover and a rear cover which are connected in sequence, the guide ring part, the front end cover, the electric cylinder housing and the rear end cover are open at both ends, the rear cover is open at one end, the stator assembly is fixed in the electric cylinder housing, the front end cover is connected to the rotating shaft component through the front bearing, and the rear end cover is connected to the rotating shaft component through the rear bearing.

[0014] Preferably, the heavy-load integrated servo cylinder also includes a brake, a feedback element and a control connector, wherein the brake and the feedback element are both arranged inside the shell, the brake sleeve is arranged outside the middle area of ​​the adapter shaft, the feedback element is arranged at the end of the adapter shaft opposite to the screw component, and the control connector is arranged outside the shell.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] A heavy-load integrated servo electric cylinder of the present invention comprises a rotor assembly of an integrated structure composed of a screw component, a screw nut, a push rod component, a rotating shaft component, a magnet component, a front bearing, a rear bearing and an adapter shaft. The integrated rotor structure replaces the pulley pair structure of the traditional servo electric cylinder, thereby improving the overall reliability of the integrated servo electric cylinder and ensuring its transmission stability and accuracy under heavy-load conditions. Even when used under heavy-load conditions, it can still ensure that the reciprocating motion reaches 10 million times without changing the accuracy. The rotor assembly adopts a low-weight design to improve the response speed of the servo electric cylinder. The heavy-load integrated servo electric cylinder has a smaller overall volume and a smaller number of components, thereby greatly reducing the production cost of the integrated servo electric cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a heavy-load integrated servo electric cylinder of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of a heavy-duty integrated servo electric cylinder of the present invention;

[0020] Figure 3 is a schematic diagram of the internal structure of the rotor assembly in the present invention;

[0021] Figure 4 It is a structural schematic diagram of the screw component and the screw nut in the present invention;

[0022] Figure 5 It is a schematic diagram of the internal structure of the push rod member in the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the long keyway and the long metal key in the present invention;

[0024] Figure 7 It is a structural schematic diagram of the fixing nut in the present invention;

[0025] Figure 8 It is a structural schematic diagram of the rotating shaft component in the present invention;

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the rotating shaft component and the magnet component in the present invention;

[0027] Fig.10 It is a structural schematic diagram of the electric cylinder magnet in the present invention;

[0028] Fig.11 It is a structural schematic diagram of the transfer shaft in the present invention;

[0029] In the figure: 1, housing assembly; 2, rotor assembly; 3, stator assembly; 4, brake; 5, feedback element; 6, control connector; 110, guide ring; 120, front cover; 130, electric cylinder housing; 140, rear cover; 150, rear cover; 210, screw component; 220, screw nut; 230, push rod component; 240, shaft component; 250, magnet component; 260, front bearing; 270, rear bearing; 280, adapter shaft; 211, tapered end; 212, weight reduction hole; 221 , long keyway; 222, long metal key; 231, push rod; 2311, step portion; 232, fixing nut; 2321, special-shaped groove; 2322, round hole; 241, bump; 242, first groove; 243, second groove; 251, electric cylinder magnet; 2511, first magnetic strip; 2512, second magnetic strip; 2513, third magnetic strip; 2514, fourth magnetic strip; 281, screw connection portion; 282, positioning step portion; 283, braking step portion; 284, feedback element mounting portion. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any form of modification and / or change made to the present invention will fall within the protection scope of the present invention.

[0031] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments, unless otherwise specified, are conventional methods in the art. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0032] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may also be implemented by those skilled in the art without these specific details.

[0033] like Figure 1-2 As shown, an embodiment of the present invention discloses a heavy-load integrated servo electric cylinder, including a housing assembly 1, a rotor assembly 2 arranged in the housing assembly 1, and a stator assembly 3 sleeved on the outside of the rotor assembly 2 and located in the housing assembly 1, wherein the stator assembly 3 is fixedly connected to the housing assembly 1.

[0034] The housing assembly 1 includes a guide ring 110, a front cover 120, an electric cylinder housing 130, a rear cover 140 and a rear cover 150 which are connected in sequence. The guide ring 110, the front cover 120, the electric cylinder housing 130 and the rear cover 140 are all open at both ends, and the rear cover 150 is open at one end. The stator assembly 3 is fixed in the electric cylinder housing 130, the front cover 120 is connected to the rotating shaft component 240 through the front bearing 260, and the rear cover 140 is connected to the rotating shaft component 240 through the rear bearing 270.

[0035] like Figure 3 As shown, the rotor assembly 2 includes a screw component 210, a screw nut 220, a push rod component 230, a shaft component 240, a magnet component 250, a front bearing 260, a rear bearing 270 and an adapter shaft 280. The screw nut 220 is sleeved on the outside of the screw component 210 and is threadedly matched with the screw component 210. A portion of the push rod component 230 is sleeved on the outside of the screw nut 220 and is fixedly connected to the screw nut 220, and another portion of the push rod component 230 is sleeved on the outside of the screw component 210 and has a gap with the outer wall of the screw component 210. The shaft component 240 is sleeved on the outside of the push rod component 230, one end of the shaft component 240 is fixedly connected to one end of the screw component 210, and the other end of the shaft component 240 has an opening for allowing the other end of the screw component 210 to extend out of the shaft component 240. The magnet component 250 is fixed to the outer wall of the shaft component 240 along the circumferential direction. The front bearing 260 and the rear bearing 270 are respectively disposed adjacent to both ends of the rotating shaft component 240. The rotating shaft component 240 is connected to the housing assembly 1 through the front bearing 260 and the rear bearing 270, and the rotating shaft component 240 can rotate relative to the housing assembly 1. One end of the transfer shaft 280 is inserted into the end of the rotating shaft component 240 fixedly connected to the screw component 210, and is fixedly connected to the end of the screw component 210.

[0036] like Figure 4 As shown, one end of the screw component 210 is a tapered end 211, which is used to match the tapered hole opened by the rotating shaft component 240. The surface of the other part of the screw component 210 other than the tapered end 211 is provided with an external thread, which is used to match the screw nut 220. The external thread is set according to the size and accuracy of the thrust, and the pitch of the external thread is any value between 1mm and 10mm. A weight-reducing hole 212 is provided inside the screw component 210, and the weight-reducing hole 212 extends from the end opposite to the tapered end 211 toward the tapered end 211, reducing the weight of the screw component 210, so that it has a lower moment of inertia, so as to improve the motion response time.

[0037] The screw nut 220 is cylindrical in shape, and the inner ring is provided with an internal thread for matching the external thread of the screw component 210. The surface of the screw nut 220 is also provided with a long keyway 221 and a long metal key 222 for matching the push rod 231.

[0038] The push rod component 230 includes a push rod member 231 and a fixing nut 232. Figure 5 As shown, the push rod 231 is a tubular structure, and is provided with a step portion 2311. One end of the push rod 231 is fixedly connected to one end of the fixing nut 232 through a thread, and the inner wall of the step portion 2311 of the push rod 231 and the inner wall of the end of the fixing nut 232 respectively abut against the two ends of the screw nut 220.

[0039] The step portion 2311 of the push rod 231 has a larger inner diameter at one end and a smaller inner diameter at the other end. The end with the larger inner diameter is sleeved outside the screw nut 220, and under the threaded connection of the fixing nut 232, the two ends of the screw nut 220 are pressed against each other, so that the push rod 231, the fixing nut 232 and the screw nut 220 are firmly fixed together. Figure 6 As shown, in order to prevent relative rotation between the screw nut 220 and the push rod 231 , a long key groove 221 and a long metal key 222 are further provided on the surface of the screw nut 220 , and the screw nut 220 and the push rod 231 form a key connection structure.

[0040] like Figure 7 As shown, the fixing nut 232 is provided with an internal thread for matching with the external thread of the push rod 231. Four special-shaped grooves 2321 are also provided along the circumference of the outer edge portion of the end surface of the fixing nut 232, and four round holes 2322 are provided on the end surface of the fixing nut 232, and are distributed along the circumference of the end surface of the fixing nut 232. The special-shaped grooves 2321 and the round holes 2322 are arranged in pairs, and there are at least two of them. The function of the special-shaped grooves 2321 and the round holes 2322 is to provide a force application point for the use of a wrench tool. When a special wrench tool is used in conjunction with the fixing nut 232, a specific torque is applied to the fixing nut 232, so that the fixing nut 232 and the push rod 231 are stably engaged through the thread. The simultaneous provision of the special-shaped grooves 2321 and the round holes 2322 is a fault-tolerant design mechanism. When one of the special-shaped grooves 2321 and the round holes 2322 fails, the other one can still provide a force application point for the wrench tool.

[0041] like Figure 8 and Fig. 9As shown, the surface of the rotating shaft component 240 is provided with a plurality of protrusions 241 and a plurality of first grooves 242, and the protrusions 241 and the first grooves 242 are arranged alternately in sequence and surround the surface of the rotating shaft component 240 in the circumferential direction. The protrusions 241 and the first grooves 242 arranged alternately in sequence are configured into two groups and are parallel to each other. Of course, the number and number of groups of the protrusions 241 and the first grooves 242 can be adjusted according to the actual application needs. The spacing between adjacent protrusions 241 is equal to the width of a single electric cylinder magnet 251 described later, and the protrusions 241 are used to limit the electric cylinder magnet 251. The electric cylinder magnet 251 is fixed to the surface of the rotating shaft component 240 by glue bonding, and the first groove 242 is used to accommodate glue to improve the connection strength between the electric cylinder magnet 251 and the rotating shaft component 240.

[0042] The surface of the rotating shaft component 240 is also provided with a plurality of second grooves 243, which are arranged obliquely relative to the length direction of the rotating shaft component 240 and surround the surface of the rotating shaft component 240 along the circumferential direction. The second grooves 243 are configured into three groups and are parallel to each other. One group of second grooves 243 is located between two groups of protrusions 241 and first grooves 242 arranged in a staggered manner. Two groups of second grooves 243 are located on both sides of the group of second grooves 243, respectively, and one group of protrusions 241 and first grooves 242 arranged in a staggered manner is spaced apart. Of course, the number and number of groups of second grooves 243 can also be adjusted accordingly according to actual application needs. The distance between adjacent second grooves 243 is 3-5mm. The second grooves 243 can accommodate a certain amount of glue, and the second grooves 243 can enhance the shear resistance of the glue on the surface of the rotating shaft component 240.

[0043] The shaft component 240 is made of a material having magnetic conductivity, such as 45# or 40Cr.

[0044] The magnet assembly 250 includes a plurality of electric cylinder magnets 251. Fig.10 As shown, the electric cylinder magnet 251 has an arc-shaped bottom surface that fits the curvature of the surface of the shaft component 240. The electric cylinder magnet 251 is fixed circumferentially around the surface of the shaft component 240. The two sides of each electric cylinder magnet 251 respectively abut against two adjacent protrusions 241. Each electric cylinder magnet 251 covers a first groove 242 and multiple second grooves 243.

[0045] The electric cylinder magnet 251 includes a first magnetic strip 2511, a second magnetic strip 2512, a third magnetic strip 2513 and a fourth magnetic strip 2514. The first magnetic strip 2511 and the second magnetic strip 2512 are stacked, two third magnetic strips 2513 are provided and are respectively located on both sides of the stack composed of the first magnetic strip 2511 and the second magnetic strip 2512, two fourth magnetic strips 2514 are provided and are respectively located on both sides of the two third magnetic strips 2513, and the bottom surfaces of the second magnetic strip 2512, the third magnetic strip 2513 and the fourth magnetic strip 2514 form a continuously extended arc bottom surface.

[0046] like Fig.11 As shown, the adapter shaft 280 is provided with a screw connection portion 281, a positioning step portion 282, a braking step portion 283 and a feedback element mounting portion 284 in sequence along the direction away from the screw component 210. The screw connection portion 281 is fixedly connected to the screw component 210. The positioning step portion 282 is used to be inserted into and cooperate with the end of the rotating shaft component 240 fixedly connected to the screw component 210, thereby limiting the radial displacement of the adapter shaft 280 relative to the rotating shaft component 240, improving the runout accuracy of the adapter shaft 280, and reducing the possibility of shaking of the feedback element mounting portion 284 at the end of the adapter shaft 280 when rotating synchronously with the screw component 210. The braking step portion 283 is used to install the brake 4, and the feedback element mounting portion 284 is used to install the feedback element 5.

[0047] The heavy-duty integrated servo electric cylinder further includes a brake 4, a feedback element 5 and a control connector 6. The brake 4 and the feedback element 5 are both arranged inside the housing, the brake 4 is sleeved outside the middle area of ​​the adapter shaft 280, the feedback element 5 is arranged at the end of the adapter shaft 280 opposite to the screw component 210, and the control connector 6 is arranged outside the housing.

[0048] The heavy-duty integrated servo cylinder replaces the pulley pair structure of the traditional servo cylinder with an integrated rotor structure, which improves the overall reliability of the integrated servo cylinder and ensures its transmission stability and accuracy under heavy-duty conditions. Even under heavy-duty conditions, it can still ensure that the reciprocating motion reaches 10 million times without changing the accuracy. The rotor assembly 2 adopts a low-weight design to improve the response speed of the servo cylinder. The heavy-duty integrated servo cylinder has a smaller overall volume and fewer parts, thereby greatly reducing the production cost of the integrated servo cylinder.

[0049] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A heavy-load integrated servo electric cylinder, comprising a housing assembly (1), a rotor assembly (2) arranged in the housing assembly (1), and a stator assembly (3) sleeved outside the rotor assembly (2) and located in the housing assembly (1), wherein the stator assembly (3) is fixedly connected to the housing assembly (1), and characterized in that: The rotor assembly (2) comprises a screw component (210), a screw nut (220), a push rod component (230), a rotating shaft component (240), a magnet component (250), a front bearing (260), a rear bearing (270) and an adapter shaft (280); the screw nut (220) is sleeved on the outside of the screw component (210) and is threadedly engaged with the screw component (210); a portion of the push rod component (230) is sleeved on the outside of the screw nut (220) and is fixedly connected to the screw nut (220), and another portion of the push rod component (230) is sleeved on the outside of the screw component (210) and has a distance between it and the outer wall of the screw component (210); the rotating shaft component (240) is sleeved on the outside of the push rod component (230), and a portion of the rotating shaft component (240) is sleeved on the outside of the push rod component (230). The rotating shaft component (240) is a housing component (1) having a front end fixedly connected to one end of the screw component (210), and the other end of the rotating shaft component (240) has an opening for allowing the other end of the screw component (210) to extend outside the rotating shaft component (240); the magnetic component (250) is circumferentially fixed to the outer wall of the rotating shaft component (240); the front bearing (260) and the rear bearing (270) are respectively arranged adjacent to the two ends of the rotating shaft component (240), and the rotating shaft component (240) is connected to the housing component (1) through the front bearing (260) and the rear bearing (270), and the rotating shaft component (240) can rotate relative to the housing component (1); one end of the transfer shaft (280) is inserted into the end of the rotating shaft component (240) fixedly connected to the screw component (210), and is fixedly connected to the end of the screw component (210).

2. A heavy-load integrated servo electric cylinder according to claim 1, characterized in that: The push rod component (230) comprises a push rod member (231) and a fixing nut (232); the push rod member (231) is a tubular structure; the push rod member (231) is provided with a step portion (2311); one end of the push rod member (231) is fixedly connected to one end of the fixing nut (232) via a thread; the inner wall of the step portion (2311) of the push rod member (231) and the inner wall of the end of the fixing nut (232) respectively abut against the two ends of the screw nut (220).

3. The heavy-duty integrated servo electric cylinder according to claim 1, characterized in that: The surface of the rotating shaft component (240) is provided with a plurality of protrusions (241) and a plurality of first grooves (242); the protrusions (241) and the first grooves (242) are arranged alternately in sequence and surround the surface of the rotating shaft component (240) in the circumferential direction.

4. A heavy-load integrated servo electric cylinder according to claim 3, characterized in that: The surface of the rotating shaft component (240) is also provided with a plurality of second grooves (243), the second grooves (243) being arranged obliquely relative to the length direction of the rotating shaft component (240) and surrounding the surface of the rotating shaft component (240) in the circumferential direction.

5. The heavy-load integrated servo electric cylinder according to claim 4, characterized in that: The protrusions (241) and the first grooves (242) that are arranged alternately in sequence are configured into at least two groups and are parallel to each other, the second grooves (243) are configured into at least three groups and are parallel to each other, and at least one group of second grooves (243) is located between two groups of protrusions (241) and first grooves (242) that are arranged alternately in sequence.

6. The heavy-load integrated servo electric cylinder according to claim 3, characterized in that: The magnet component (250) comprises a plurality of electric cylinder magnets (251), each of the electric cylinder magnets (251) having an arc-shaped bottom surface that fits the arc of the surface of the rotating shaft component (240), and the electric cylinder magnets (251) are fixed to the surface of the rotating shaft component (240) along the circumferential direction, and the two sides of each electric cylinder magnet (251) respectively abut against two adjacent protrusions (241), and each electric cylinder magnet (251) covers a first groove (242) and covers a plurality of second grooves (243).

7. A heavy-load integrated servo electric cylinder according to claim 6, characterized in that: The electric cylinder magnet (251) comprises a first magnetic strip (2511), a second magnetic strip (2512), a third magnetic strip (2513) and a fourth magnetic strip (2514); the first magnetic strip (2511) and the second magnetic strip (2512) are stacked; two third magnetic strips (2513) are provided and are respectively located on both sides of the stacked body composed of the first magnetic strip (2511) and the second magnetic strip (2512); two fourth magnetic strips (2514) are provided and are respectively located on both sides of the two third magnetic strips (2513); and the bottom surfaces of the second magnetic strip (2512), the third magnetic strip (2513) and the fourth magnetic strip (2514) form a continuously extending arc bottom surface.

8. The heavy-duty integrated servo electric cylinder according to claim 1, characterized in that: The adapter shaft (280) is provided with a screw connecting portion (281), a positioning step portion (282), a braking step portion (283) and a feedback element mounting portion (284) in sequence along a direction away from the screw component (210); the screw connecting portion (281) is fixedly connected to the screw component (210); the positioning step portion (282) is used to be inserted into and cooperate with the end of the rotating shaft component (240) fixedly connected to the screw component (210), thereby limiting the radial displacement of the adapter shaft (280) relative to the rotating shaft component (240); the braking step portion (283) is used to install a brake (4); and the feedback element mounting portion (284) is used to install a feedback element (5).

9. The heavy-duty integrated servo electric cylinder according to claim 1, characterized in that: The housing assembly (1) comprises a guide ring member (110), a front end cover (120), an electric cylinder housing (130), a rear end cover (140) and a rear cover (150) which are connected in sequence; the guide ring member (110), the front end cover (120), the electric cylinder housing (130) and the rear end cover (140) are all open at both ends, and the rear cover (150) is open at one end; the stator assembly (3) is fixed in the electric cylinder housing (130); the front end cover (120) is connected to the rotating shaft member (240) via the front bearing (260); and the rear end cover (140) is connected to the rotating shaft member (240) via the rear bearing (270).

10. The heavy-load integrated servo electric cylinder according to claim 1, characterized in that: The heavy-load integrated servo electric cylinder also includes a brake (4), a feedback element (5) and a control connector (6), wherein the brake (4) and the feedback element (5) are both arranged inside the housing, the brake (4) is sleeved on the outside of the middle area of ​​the adapter shaft (280), the feedback element (5) is arranged at the end of the adapter shaft (280) opposite to the screw component (210), and the control connector (6) is arranged outside the housing.

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