Sleeve type linear electric cylinder

Abstract

The utility model discloses a sleeve type linear electric cylinder which comprises a base, a driving assembly and an output sleeve, and the driving assembly is arranged on the base and is in transmission connection with the output sleeve so as to drive the output sleeve to do telescopic motion relative to the driving assembly. A first connecting part is arranged at the end, away from the driving assembly, of the output sleeve, and when the output sleeve moves to the minimum stroke position, at least part of the driving assembly is located in the sleeve. According to the sleeve type linear electric cylinder, under the condition that the same stroke is achieved, the overall length is shorter, and occupied space is greatly reduced. In addition, the cantilever effect can be effectively reduced, and the overall rigidity of the electric cylinder is improved. Besides, the output sleeve naturally forms a protective cover in the working process of the electric cylinder, the protective function is achieved through the structural characteristics of the output sleeve, an outer shell does not need to be additionally arranged, cost is reduced, and the size of the electric cylinder is reduced to a certain degree.

Description

Technical Field

[0001] This utility model relates to the field of linear electric cylinder technology, specifically to a sleeve-type linear electric cylinder. Background Technology

[0002] With the continuous development of automation technology, linear electric cylinders, as an important linear drive actuator, have been widely used in various automated equipment. However, in related technologies, when the output sleeve of the linear electric cylinder and the drive assembly are arranged on the same straight line, the total length of the linear electric cylinder is equal to its stroke plus the length of the drive assembly. This results in a relatively long overall length of the linear electric cylinder, which takes up a lot of space and restricts its installation and use in environments with limited space. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a sleeve-type linear electric cylinder.

[0005] The sleeve-type linear electric cylinder of this utility model includes a base, a drive assembly, and an output sleeve. The drive assembly is disposed on the base and is throttle-connected to the output sleeve to drive the output sleeve to perform telescopic movement relative to the drive assembly. The output sleeve has a first connecting portion at one end away from the drive assembly. When the output sleeve moves to the minimum stroke position, at least a portion of the drive assembly is located inside the sleeve.

[0006] In some embodiments, the sleeve-type linear electric cylinder of this utility model includes a first transmission member, at least a portion of which is located inside the output sleeve and connected to the drive assembly, so that the drive assembly drives the first transmission member to rotate. The inner wall of the output sleeve is provided with a first transmission part, which is connected to the first transmission member so that when the first transmission member rotates, it drives the output sleeve to perform telescopic movement.

[0007] In some embodiments, the first transmission member is a screw with an external thread, and the inner wall of the output sleeve has an internal thread, the internal thread constituting the first transmission part, and the internal thread engaging with the external thread.

[0008] In some embodiments, the drive assembly includes a motor, a gearbox, and an encoder, the encoder being connected to the base, the motor being connected to the encoder, the gearbox being connected to the motor, and the first transmission member being connected to the output shaft of the gearbox.

[0009] In some embodiments, one of the output sleeve and the gearbox is provided with a sliding groove, and the other of the output sleeve and the gearbox is provided with a slider, the slider being slidably fitted into the sliding groove along the axial direction of the output sleeve.

[0010] In some embodiments, the groove is disposed on the inner wall of the output sleeve, and the slider is disposed on the gearbox.

[0011] In some embodiments, the sleeve-type linear electric cylinder of this utility model further includes a bellows, which is sleeved on the gearbox. One end of the bellows is connected to the bottom end face of the output sleeve, and the other end of the bellows is connected to the gearbox.

[0012] In some embodiments, the sleeve-type linear electric cylinder of this utility model further includes a sealing ring, which is sleeved on the gearbox and connected to the bottom end face of the output sleeve, and the inner circumferential surface of the sealing ring abuts against the gearbox.

[0013] In some embodiments, the first connecting portion is provided with a first connecting hole, the axis of the first connecting hole being perpendicular to the axis of the output sleeve.

[0014] In some embodiments, the base is provided with a second connecting portion, the second connecting portion is provided with a second connecting hole, and the axis of the second connecting hole is perpendicular to the axis of the output sleeve.

[0015] In this embodiment of the linear electric cylinder, when the output sleeve moves to its minimum stroke position, at least a portion of the drive assembly is located inside the sleeve. This causes the output sleeve and at least a portion of the drive assembly to coincide along the axial direction of the output sleeve, thereby reducing the overall length of the linear electric cylinder by 30%-50% compared to traditional linear electric cylinders. In other words, to achieve the same stroke, the linear electric cylinder of this invention has a shorter overall length, significantly reducing its space requirements and making it easier to install and use in space-constrained environments, thus expanding the application scenarios of the electric cylinder.

[0016] Furthermore, in traditional linear electric cylinders, if the motor is far from the load end, the cantilever portion of the cylinder will experience significant deformation and vibration during force output, affecting the cylinder's rigidity and stability. The layout of this invention effectively reduces the cantilever effect and improves the overall rigidity of the electric cylinder. This allows the electric cylinder to better maintain structural stability and motion accuracy when facing high thrust scenarios, making it suitable for automated equipment with high thrust requirements.

[0017] Furthermore, in traditional electric cylinders, an additional outer casing is typically required to protect the internal drive components and transmission parts from external dust, debris, liquids, and other contaminants. This not only increases costs but also further enlarges the overall size of the electric cylinder. In contrast, this invention utilizes the output sleeve, which naturally forms a protective cover during the operation of the electric cylinder. Its inherent structural features achieve the protective function without the need for an additional outer casing, thus reducing costs and, to some extent, decreasing the size of the electric cylinder. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the sleeve-type linear electric cylinder according to an embodiment of the present utility model.

[0019] Figure 2 This is a cross-sectional view of the sleeve-type linear electric cylinder according to the first embodiment of this utility model.

[0020] Figure 3 This is a cross-sectional view of the sleeve-type linear electric cylinder according to the second embodiment of this utility model.

[0021] Figure label:

[0022] 100. Sleeve-type linear electric cylinder; 1. Base; 101. Second connecting part; 1011. Second connecting hole; 2. Drive assembly; 201. Motor; 202. Gearbox; 203. Encoder; 3. Output sleeve; 301. First connecting part; 3011. First connecting hole; 302. First transmission part; 303. Slide groove; 4. First transmission component; 5. Sealing ring. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] like Figures 1 to 3 As shown, the sleeve-type linear electric cylinder 100 of this utility model embodiment includes a base 1, a drive assembly 2, and an output sleeve 3. The drive assembly 2 is disposed on the base 1 and is throttle-connected to the output sleeve 3 to drive the output sleeve 3 to perform telescopic movement relative to the drive assembly 2. A first connecting portion 301 is provided at the end of the output sleeve 3 away from the drive assembly 2, wherein when the output sleeve 3 moves to the minimum stroke position, at least a portion of the drive assembly 2 is located inside the sleeve.

[0025] In use, the sleeve-type linear electric cylinder 100 of this utility model has a drive assembly 2 mounted on a base 1, which acts as a power source to generate power. The drive assembly 2 transmits the generated power to the output sleeve 3, causing the output sleeve 3 to perform linear extension and retraction relative to the drive assembly 2, with a certain stroke range. When the output sleeve 3 moves to the minimum stroke position, at least a portion of the drive assembly 2 will be located inside the sleeve.

[0026] When the output sleeve 3 moves to its minimum stroke position, at least a portion of the drive assembly 2 will be located inside the sleeve, causing the output sleeve 3 and at least a portion of the drive assembly 2 to coincide along the axial direction of the output sleeve 3. This reduces the overall length of the linear electric cylinder by 30%-50% compared to traditional linear electric cylinders. In other words, to achieve the same stroke, the linear electric cylinder of this invention has a shorter overall length, greatly reducing its space occupation and making it easier to install and use in space-constrained environments, thus expanding the application scenarios of the electric cylinder.

[0027] Furthermore, in traditional linear electric cylinders, if the motor 201 is far from the load end, the cantilever portion of the cylinder will experience significant deformation and vibration during force output, affecting the cylinder's rigidity and stability. The layout of this invention effectively reduces the cantilever effect and improves the overall rigidity of the electric cylinder. This allows the electric cylinder to better maintain structural stability and motion accuracy when facing high thrust scenarios, making it suitable for automated equipment with high thrust requirements.

[0028] Furthermore, in traditional electric cylinders, an additional outer casing is usually required to protect the internal drive assembly 2 and transmission components from external dust, debris, liquids, etc. This not only increases costs but also further increases the overall size of the electric cylinder. In contrast, this invention utilizes the output sleeve 3, which naturally forms a protective cover during the operation of the electric cylinder. Its structural features achieve the protective function without the need for an additional outer casing, thus reducing costs and, to some extent, decreasing the size of the electric cylinder.

[0029] In some embodiments, the sleeve-type linear electric cylinder 100 of this utility model includes a first transmission member 4. At least a portion of the first transmission member 4 is located inside the output sleeve 3 and connected to the drive assembly 2, so that the drive assembly 2 drives the first transmission member 4 to rotate. A first transmission part 302 is provided on the inner wall of the output sleeve 3. The first transmission part 302 is connected to the first transmission member 4 so that when the first transmission member 4 rotates, it drives the output sleeve 3 to perform telescopic movement.

[0030] The drive assembly 2 is mounted on the base 1. When the drive assembly 2 is started, it transmits power to the first transmission member 4. Since at least a portion of the first transmission member 4 is located within the output sleeve 3 and connected to the drive assembly 2, the drive assembly 2 can drive the first transmission member 4 to rotate. For example, if the drive assembly 2 is a motor 201, the rotational power of the motor 201 may be transmitted to the first transmission member 4 via a coupling or similar means.

[0031] The inner wall of the output sleeve 3 is provided with a first transmission part 302, and this first transmission part 302 is connected to the first transmission component 4. When the first transmission component 4 rotates under the drive of the drive assembly 2, the rotational motion of the first transmission component 4 is converted into the linear extension and retraction motion of the output sleeve 3 through the cooperation between the first transmission part 302 and the first transmission component 4 (such as lead screw and nut cooperation, gear transmission cooperation, etc.). For example, if the first transmission component 4 is a lead screw and the first transmission part 302 is a nut that cooperates with it, when the lead screw rotates, the nut will move linearly along the lead screw, thereby driving the output sleeve 3 to perform extension and retraction motion.

[0032] Because the first transmission component 4 directly engages with the first transmission part 302 on the inner wall of the output sleeve 3, intermediate transmission links are reduced, energy loss during power transmission is decreased, thereby improving the transmission efficiency of the electric cylinder. This means that under the same driving power, the electric cylinder can output greater thrust or achieve faster movement speed, thus improving the working performance of the electric cylinder.

[0033] The first transmission component 4 is located inside the output sleeve 3, making the transmission process more stable. The output sleeve 3 can provide some protection and support for the first transmission component 4, reduce the interference of external factors on the transmission components, reduce the vibration and noise generated during the transmission process, and improve the stability and reliability of the electric cylinder operation.

[0034] Optionally, the first transmission component 4 is a screw with an external thread, and the inner wall of the output sleeve 3 has an internal thread. The internal thread constitutes the first transmission part 302, and the internal thread is threadedly engaged with the external thread.

[0035] Threaded drives offer excellent motion and positioning accuracy. Each revolution of the screw corresponds to a precise linear displacement of the output sleeve 3. By controlling the number and direction of the screw's rotation driven by the drive assembly 2 (such as the servo motor 201), the extension and retraction length and position of the output sleeve 3 can be precisely controlled, meeting the high-precision linear motion requirements of automated equipment. Threaded drives can achieve a large transmission ratio, converting the high-speed rotational motion of the drive assembly 2 into low-speed, high-thrust linear motion of the output sleeve 3. This allows the electric cylinder to output a large thrust even with relatively low power, making it suitable for applications requiring high-power actuation.

[0036] The screw and internal thread mating structure is relatively simple, eliminating the need for complex transmission mechanisms, reducing the number of parts, and lowering manufacturing costs. Furthermore, this structure enables transmission within the output sleeve 3, further saving space and making the overall electric cylinder structure more compact.

[0037] The threaded fit has a self-locking characteristic. Under certain conditions, even if the drive assembly 2 stops working, the output sleeve 3 can remain in its current position and will not slip due to external forces. This improves the stability and reliability of the electric cylinder during operation, and is especially suitable for applications that require maintaining a specific position for a long time.

[0038] In some embodiments, the drive assembly 2 includes a motor 201, a gearbox 202 and an encoder 203. The encoder 203 is connected to the base 1, the motor 201 is connected to the encoder 203, the gearbox 202 is connected to the motor 201, and the first transmission member 4 is connected to the output shaft of the gearbox 202.

[0039] The main function of encoder 203 is to measure the speed, position, and other information of motor 201 and feed this information back to the control system. Connected to base 1, encoder 203 can stably acquire the motion state of motor 201. Based on the information fed back by encoder 203, the control system can precisely control the operation of motor 201, thereby achieving precise drive of the first transmission component 4. For example, in some automated production lines requiring precise position control, this precise drive can ensure the processing accuracy and quality of products.

[0040] The motor 201 serves as the power source for the entire drive assembly 2. After being powered on, it begins to operate and outputs high-speed rotational power. There are various types of motors 201, such as stepper motors 201 and servo motors 201, which can provide corresponding speeds and torques according to different application requirements.

[0041] The high-speed rotational power output by the motor 201 is directly transmitted to the connected reduction gearbox 202. The function of the reduction gearbox 202 is to reduce the speed of the motor 201 while increasing the output torque. It achieves the speed reduction function through internal gear transmission mechanisms, etc. According to the transmission ratio of the reduction gearbox 202, it converts the high-speed, low-torque output of the motor 201 into a low-speed, high-torque output to meet the thrust and speed requirements of the electric cylinder during operation.

[0042] The power, after being adjusted by the gearbox 202, is transmitted to the first transmission component 4 (such as a screw) through the output shaft of the gearbox 202. The output shaft of the gearbox 202 is connected to the first transmission component 4, driving the first transmission component 4 to rotate. Since the first transmission component 4 is engaged with the first transmission part 302 (such as an internal thread) on the inner wall of the output sleeve 3, the rotation of the first transmission component 4 drives the output sleeve 3 to perform telescopic movement, realizing the linear drive function of the electric cylinder.

[0043] Different automated equipment has different requirements for the thrust and speed of electric cylinders. Motor 201 typically has a high speed but relatively low torque, while many practical applications require electric cylinders to have greater thrust. Through the speed reduction and torque amplification effect of the reduction gearbox 202, the output characteristics of the electric cylinder can be better matched to actual working needs, improving the working efficiency and performance of the electric cylinder.

[0044] In some applications requiring high motion precision, the gearbox 202 can improve the control accuracy of motion. Because the gearbox 202 reduces the rotational speed, the drive assembly 2 can more precisely control the rotation of the first transmission component 4, thereby enabling more accurate control of the extension and retraction displacement and speed of the output sleeve 3, meeting the requirements of automated equipment for high-precision linear motion.

[0045] In some embodiments, one of the output sleeve 3 and the gearbox 202 is provided with a groove 303, and the other of the output sleeve 3 and the gearbox 202 is provided with a slider, which is slidably fitted in the groove 303 along the axial direction of the output sleeve 3.

[0046] Since the slider is slidably fitted into the groove 303 along the axial direction of the output sleeve 3, the slider will slide relative to the output sleeve 303 during the extension and retraction of the output sleeve 3. This provides precise guidance for the linear motion of the output sleeve 3, ensuring that the output sleeve 3 extends and retracts along the predetermined axial direction, avoiding deviation or wobbling, and making the movement of the electric cylinder more stable and accurate.

[0047] The cooperation between the slider and the groove 303 constrains the relative motion relationship between the output sleeve 3 and the reduction gearbox 202. They ensure the synchronization of the movement between the output sleeve 3 and the reduction gearbox 202 during extension and retraction, enabling the drive assembly 2 to effectively transmit power to the output sleeve 3 and realize the normal operation of the electric cylinder.

[0048] Optionally, the slide 303 is provided on the inner wall of the output sleeve 3, and the slider is provided on the gearbox 202.

[0049] In some embodiments, the sleeve-type linear electric cylinder 100 of this utility model further includes a bellows (not shown in the figure), which is sleeved on the gearbox 202. One end of the bellows is connected to the bottom end face of the output sleeve 3, and the other end of the bellows is connected to the gearbox 202.

[0050] When the sleeve-type linear electric cylinder 100 is working, the output sleeve 3 will extend and retract under the drive of the drive assembly 2. At this time, the bellows sleeved on the reduction gearbox 202 will expand or contract accordingly with the extension and retraction of the output sleeve 3. When the output sleeve 3 extends, the bellows gradually expands; when the output sleeve 3 retracts, the bellows gradually contracts. During this process, the bellows always maintains a state of wrapping around the reduction gearbox 202, forming a relatively closed space, preventing external dust, debris, liquids, etc. from entering the interior of the reduction gearbox 202 and other key parts of the electric cylinder, thus playing a role in dust prevention and protection.

[0051] The working environment of automated equipment often contains various dust and impurities. This dust entering the gearbox 202 can affect the meshing accuracy of the gears, increase transmission resistance, and even lead to accelerated wear of components, shortening the service life of the gearbox 202. The bellows effectively prevents dust from entering, ensuring the cleanliness of the inside of the gearbox 202 and guaranteeing the stable operation of the electric cylinder transmission system.

[0052] In some other embodiments, the sleeve-type linear electric cylinder 100 of this utility model further includes a sealing ring 5. The sealing ring 5 is sleeved on the reduction gearbox 202 and connected to the bottom end face of the output sleeve 3. The inner circumferential surface of the sealing ring 5 abuts against the reduction gearbox 202. The sealing ring 5 is used for dust prevention.

[0053] In automated production environments, dust is a common factor affecting the normal operation of equipment. The tight-fitting design of the sealing ring 5 effectively prevents dust intrusion, providing reliable dust protection for the gearbox 202 and its internal transmission components. This helps maintain the cleanliness of the gearbox 202's interior, ensuring the normal operation of gears, bearings, and other components, and reducing wear and malfunctions caused by dust accumulation.

[0054] In addition to dust prevention, the sealing ring 5 also provides some moisture protection. It prevents moisture from entering the electric cylinder, avoiding damage to electrical components and rust / corrosion of metal parts. For electric cylinders used in humid environments or where liquids splash, the moisture-proof function of the sealing ring 5 is particularly important, significantly improving the cylinder's reliability and lifespan.

[0055] The sealing ring 5 has a relatively simple structure, occupies little space, and does not increase the overall size and weight of the electric cylinder. This allows the electric cylinder to maintain its original compact design while possessing good protective performance, making it suitable for applications with high space requirements. The installation of the sealing ring 5 is relatively simple; it only needs to be fitted onto the gearbox 202 and connected to the bottom end face of the output sleeve 3. This reduces installation difficulty and time costs, and improves the installation efficiency of the equipment.

[0056] In some embodiments, the first connecting part 301 is provided with a first connecting hole 3011, and the axis of the first connecting hole 3011 is perpendicular to the axis of the output sleeve 3.

[0057] The first connecting part 301 is located at the end of the output sleeve 3 furthest from the drive assembly 2. When it is necessary to connect the linear electric cylinder to an external load, the connection can be achieved using the first connecting hole 3011. Since the axis of the first connecting hole 3011 is perpendicular to the axis of the output sleeve 3, through this connecting hole, connecting parts such as bolts or pins can be used to securely connect the load to the output sleeve 3 in a manner perpendicular to the extension and retraction direction of the output sleeve 3. In this way, when the output sleeve 3 performs extension and retraction under the drive of the drive assembly 2, the power can be reliably transmitted to the load, driving the load to perform corresponding linear motion.

[0058] In some embodiments, the base 1 is provided with a second connecting part 101, and the second connecting part 101 is provided with a second connecting hole 1011, the axis of the second connecting hole 1011 being perpendicular to the axis of the output sleeve 3.

[0059] The second connecting part 101 on the base 1 and its second connecting hole 1011 are used to fix the linear electric cylinder to an external equipment frame or work platform. Similarly, the axis of the second connecting hole 1011 is perpendicular to the axis of the output sleeve 3. Using bolts or other connecting parts through the second connecting hole 1011, the base 1 can be securely installed on the external structure in a manner perpendicular to the extension and retraction direction of the output sleeve 3. This allows the electric cylinder to maintain a stable position during operation, preventing displacement due to vibration or external forces, and ensuring normal and reliable operation of the electric cylinder.

[0060] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A sleeve-type linear electric cylinder, characterized in that, include: Base; A drive assembly and an output sleeve are provided. The drive assembly is disposed on the base and is throttle connected to the output sleeve to drive the output sleeve to perform telescopic movement relative to the drive assembly. The output sleeve has a first connecting portion at one end away from the drive assembly. When the output sleeve moves to the minimum stroke position, at least a portion of the drive assembly is located inside the sleeve.

2. The sleeve-type linear electric cylinder according to claim 1, characterized in that, The device includes a first transmission component, at least a portion of which is located inside the output sleeve and connected to the drive assembly, so that the drive assembly drives the first transmission component to rotate. The inner wall of the output sleeve is provided with a first transmission part, which is connected to the first transmission component so that when the first transmission component rotates, it drives the output sleeve to perform telescopic movement.

3. The sleeve-type linear electric cylinder according to claim 2, characterized in that, The first transmission component is a screw with an external thread, and the inner wall of the output sleeve has an internal thread. The internal thread constitutes the first transmission part, and the internal thread is threadedly engaged with the external thread.

4. The sleeve-type linear electric cylinder according to claim 2, characterized in that, The drive assembly includes a motor, a gearbox, and an encoder. The encoder is connected to the base, the motor is connected to the encoder, the gearbox is connected to the motor, and the first transmission component is connected to the output shaft of the gearbox.

5. The sleeve-type linear electric cylinder according to claim 4, characterized in that, One of the output sleeve and the gearbox is provided with a sliding groove, and the other of the output sleeve and the gearbox is provided with a slider. The slider is slidably fitted into the sliding groove along the axial direction of the output sleeve.

6. The sleeve-type linear electric cylinder according to claim 5, characterized in that, The groove is provided on the inner wall of the output sleeve, and the slider is provided on the gearbox.

7. The sleeve-type linear electric cylinder according to claim 4, characterized in that, It also includes a bellows, which is sleeved on the gearbox. One end of the bellows is connected to the bottom end face of the output sleeve, and the other end of the bellows is connected to the gearbox.

8. The sleeve-type linear electric cylinder according to claim 4, characterized in that, It also includes a sealing ring, which is sleeved on the gearbox and connected to the bottom end face of the output sleeve, and the inner circumferential surface of the sealing ring abuts against the gearbox.

9. The sleeve-type linear electric cylinder according to claim 1, characterized in that, The first connecting part is provided with a first connecting hole, and the axis of the first connecting hole is perpendicular to the axis of the output sleeve.

10. The sleeve-type linear electric cylinder according to claim 1, characterized in that, The base is provided with a second connecting part, and the second connecting part is provided with a second connecting hole, the axis of the second connecting hole being perpendicular to the axis of the output sleeve.

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