Electric cylinder with multiple non-return functions

Abstract

The invention relates to the technical field of electric cylinders, in particular to a non-return multifunctional electric cylinder which comprises a power source, a telescopic cylinder body assembly and a bearing seat and further comprises a non-return assembly, the power source, the telescopic cylinder body assembly and the non-return assembly are all arranged on the bearing seat, and the bearing seat is provided with a shared transmission part. The power source drives a telescopic rod of the telescopic cylinder body assembly to extend or retract through the common transmission part, and the non-return assembly acts on the common transmission part and is used for providing opposite torque for a load part applied to the telescopic rod of the telescopic cylinder body assembly; the non-return assembly is provided with a non-return component acting on the shared transmission part and a torque adjusting mechanism, and the torque adjusting mechanism adjusts and controls the torque applied to the shared transmission part by the non-return component. According to the electric cylinder with the multiple non-return functions, reverse torque can be provided for the load part through the non-return assembly to prevent accidental movement when a power source breaks down and the like, the torque can be adjusted, power transmission is achieved through the shared transmission part, and stability and adaptability are improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric cylinders, and in particular discloses an electric cylinder with a check and return function. Background Art

[0002] Electric cylinders are widely used in industrial production and the operation of various mechanical equipment. However, there are many problems that need to be solved in traditional electric cylinders. On the one hand, when electric cylinders are used to carry loads subject to gravity or external forces, such as when lifting heavy objects vertically, there is a lack of effective check means, and the heavy objects are prone to slide down by themselves due to gravity or sudden equipment failure, which seriously threatens the safety of equipment and the lives of operators. At the same time, it is also difficult to adapt to complex and diverse work scenarios. On the other hand, traditional electric cylinders have relatively single functions, and each component is independent of each other, lacking efficient integration, resulting in large installation space requirements, complex connection structures, increased installation and maintenance costs, and poor versatility.

[0003] In addition, the existing electric cylinders are not flexible enough in torque adjustment and cannot be adjusted accurately according to the actual load size. Either the torque is too large to damage the equipment, or the torque is too small to meet the working requirements. Moreover, during equipment commissioning and maintenance, the check function is difficult to remove conveniently, affecting work efficiency. In view of these background issues, the development of an electric cylinder with a check function is of great practical significance. Summary of the invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, an object of the present invention is to provide an electric cylinder with a check and return function.

[0005] To achieve the above-mentioned purpose, the present invention provides an electric cylinder with a check valve multifunction, comprising a power source, a telescopic cylinder assembly and a bearing seat, and also a check valve assembly. The power source, the telescopic cylinder assembly and the check valve assembly are all arranged on the bearing seat. The bearing seat has a common transmission member. The power source drives the telescopic rod of the telescopic cylinder assembly to extend or retract via the common transmission member. The check valve assembly acts on the common transmission member to provide an opposite torque to the load member applied to the telescopic rod of the telescopic cylinder assembly. The check valve assembly has a check member and a torque adjustment mechanism acting on the common transmission member. The torque adjustment mechanism regulates the torque applied by the check member to the common transmission member.

[0006] Furthermore, the common transmission member is a first gear rotatably arranged on a bearing seat, the bearing seat is rotatably arranged with a second gear meshing with the first gear, the first gear and the second gear are combined to form a gear set, the check member is a check shaft fixedly connected to the second gear, and the output shaft of the power source is matched with the first gear; the torque adjustment mechanism acts on the check shaft.

[0007] Furthermore, the electric cylinder with a check valve multifunction also includes a clutch mechanism, which has a threaded sleeve, a limit piece and an elastic element, and the threaded sleeve is threadedly connected to the bearing seat; the limit piece is arranged on the check valve member, and the threaded sleeve is used to cooperate with the limit piece; the check valve member is movably arranged on the bearing seat, and the elastic force of the elastic element drives the limit piece to move relative to the bearing seat to drive the check valve member to move; the threaded sleeve rotates to drive the check valve member to drive the limit piece to move, so that the elastic element is compressed or released, thereby realizing the connection or disconnection between the check valve member and the common transmission member.

[0008] Furthermore, the bearing seat is slidably provided with a sleeve, the sleeve is provided with a boss for abutting against the bearing seat, and the sleeve is arranged on the outside of the check member; the two ends of the elastic element act on the bearing seat and the sleeve respectively; the bearing seat is provided with a threaded hole, the limit piece is located in the threaded hole, one end of the threaded sleeve has a threaded column screwed into the threaded hole, the free end of the threaded column is used to abut against the limit piece, and the threaded sleeve has a disc protrusion located outside the bearing seat for easy holding.

[0009] Furthermore, the torque adjustment mechanism includes a friction component and a friction driving component that drives the friction component to move; the friction driving component drives the friction component to move, and then the friction force between the check member and the bearing seat changes, thereby adjusting the size of the check torque applied by the check member to the common transmission member.

[0010] Furthermore, the friction assembly includes a first friction member fixedly connected to the bearing seat and a second friction member axially movably mounted on the outside of the check member; the friction drive assembly has an adjusting nut threaded on the check member, and the second friction member is driven to contact and press the first friction member by rotating the adjusting nut, and the check torque is the friction torque generated by the pressing force between the first friction member and the second friction member.

[0011] Furthermore, the bearing seat has a first bearing seat for installing the output shaft of the power source and a second bearing seat for installing the check shaft, and the second bearing seat is installed on the first bearing seat; the output shaft and the check shaft of the power source are both installed on the bearing seat through a bearing assembly, and the bearing assembly includes two support bearings arranged opposite to each other in the axial direction, and the outer ring of the support bearing is clearance-matched with the bearing seat; the two support bearings are used to support the output shaft or the check member.

[0012] Furthermore, the check member is provided with an internal thread, and the adjusting nut is threadedly connected to the internal thread; the outer diameter of the first friction part is larger than the maximum outer diameter of the adjusting nut; the second friction part is in a frustum-shaped structure, and its outer diameter gradually increases from the end close to the adjusting nut to the side of the first friction part, and a conical surface matching structure is formed between the second friction part and the first friction part, and the second friction part is driven to move by the adjusting nut, thereby adjusting the contact pressure between the first friction part and the second friction part.

[0013] Further, the first bearing block is installed with a rotating driven shaft through a bearing assembly. One axial end of the driven shaft is connected to the output shaft of the power source, and the other end is connected to the piston rod of the telescopic cylinder assembly through a synchronous pulley assembly.

[0014] Further, one end of the reverse stop member away from the common transmission member is connected to a detachable handle. The reverse stop member is rotatably arranged on the bearing seat. One end of the handle is connected to the reverse stop member, and the other end is connected to the operation end. The user drives the reverse stop member to rotate by holding the operation end to realize the manual lifting operation of the telescopic cylinder assembly.

[0015] Advantages of the present invention:

[0016] (1) Integration of safety and function: The reverse stop assembly can prevent the load from sliding down due to external force, ensuring the safety of the equipment and personnel. For example, it can effectively prevent falling when vertically lifting heavy objects. Integrating the power source, telescopic cylinder assembly and reverse stop assembly on the bearing seat and working together through the common transmission member endows the electric cylinder with multiple functions, reduces the installation space and complex connections, and is suitable for various working scenarios.

[0017] (2) Flexible torque adjustment: The torque adjustment mechanism flexibly adjusts the reverse stop torque through the clutch mechanism. It can be accurately set according to the actual situation of the load, ensuring both the reverse stop effect and avoiding damage to the equipment due to improper torque. The clutch mechanism is easy to operate and can easily release the reverse stop function, facilitating equipment debugging, maintenance and operation in specific working stages.

[0018] (3) Optimized structural design: Adopting gear set transmission, it has high efficiency, accurate transmission ratio and reliable operation. The reverse stop shaft body has a simple and reliable structure. The bearing blocks on the bearing seat are compactly arranged, and the bearing assembly effectively supports the shaft and evenly bears the load, ensuring stable operation. In addition, the handle conforms to ergonomics, is easy to operate, can accurately control the reverse stop action, and improves the safety of the equipment. Description of the drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of an electric cylinder with reverse stop multifunction according to the present invention;

[0020] Figure 2 It is the second schematic diagram of the overall structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the clutch mechanism and torque adjustment mechanism of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the clutch mechanism and torque adjustment mechanism of the present invention after removing the reverse stop shaft;

[0023] Figure 5 It is a partial exploded view of the clutch mechanism and torque adjustment mechanism of the present invention;

[0024] Figure 6 Structural schematic diagram of the check shaft of the present invention;

[0025] Figure 7 Partial structural schematic diagram of the clutch mechanism and torque adjustment mechanism of the present invention;

[0026] Figure 8 Exploded schematic diagram of the torque adjustment mechanism of the present invention.

[0027] Reference numerals include: 1, power source; 2, telescopic cylinder assembly; 3, bearing seat; 31, first bearing seat; 32, second bearing seat; 33, bearing assembly; 34, support bearing; 35, driven shaft; 36, synchronous pulley assembly; 4, check assembly; 41, check member; 410, check shaft body; 42, clutch mechanism; 421, threaded sleeve; 422, limiting member; 423, elastic element; 424, bearing end cover; 425, movement clearance; 426, collar; 427, bushing; 428, first driver; 429, first transmission mechanism; 43, torque adjustment mechanism; 431, friction assembly; 432, friction drive assembly; 433, first friction member; 434, second friction member; 435, adjusting nut; 436, internal thread; 437, second driver; 438, second transmission mechanism; 439, spring group; 4390, disc spring; 5, gear group; 51, common transmission member; 510, first gear; 52, second gear; 520, bevel gear; 6, handle; 61, operating end. Detailed implementation manners

[0028] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in conjunction with the drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present invention as follows.

[0029] Please refer to Figures 1 to 8 As shown, an electric cylinder with check multifunction of the present invention includes a power source 1, a telescopic cylinder assembly 2 and a bearing seat 3, and further includes a check assembly 4. The power source 1, the telescopic cylinder assembly 2 and the check assembly 4 are all arranged on the bearing seat 3. The bearing seat 3 has a common transmission member 51. The power source 1 drives the telescopic rod of the telescopic cylinder assembly 2 to extend or retract via the common transmission member 51. The check assembly 4 acts on the common transmission member 51 to provide an opposite torque for the load member applied to the telescopic rod of the telescopic cylinder assembly 2. The check assembly 4 has a check member 41 acting on the common transmission member 51 and a torque adjustment mechanism 43. The torque adjustment mechanism 43 regulates the magnitude of the torque applied by the check member 41 on the common transmission member 51.

[0030] During actual use, the reverse stop component 4 acts on the common transmission part 51, and can provide an opposite torque for the load on the telescopic rod of the telescopic cylinder component 2. This means that when the electric cylinder stops working or the power source 1 fails, the reverse stop component 4 can prevent the load from moving or sliding accidentally due to its own gravity or other external forces, thereby improving the safety and stability of the equipment operation. The reverse stop component 4 can not only prevent the load from moving accidentally, but also regulate the magnitude of the torque applied by the reverse stop member 41 on the common transmission part 51 through the torque adjustment mechanism 43. This design enables the electric cylinder to flexibly adjust the reverse stop torque according to different working requirements and load conditions, achieve precise control of the load and diverse working modes, and enhance the adaptability and versatility of the electric cylinder.

[0031] The power source 1, the telescopic cylinder component 2, and the reverse stop component 4 are all arranged on the bearing seat 3, and the bearing seat 3 has a common transmission part 51. This structural design makes the layout of the various components of the electric cylinder compact, reduces space occupation, and at the same time realizes the effective transmission of power through the common transmission part 51, simplifies the transmission structure, and improves the integration and reliability of the system. Through the coordinated action of the reverse stop component 4 and the torque adjustment mechanism 43, the electric cylinder can quickly and accurately respond to load changes in different working scenarios, avoid equipment shutdown or failure caused by accidental movement of the load, and thus improve work efficiency and production efficiency.

[0032] Specifically, the common transmission part 51 is a first gear 510 rotatably arranged on the bearing seat 3, the bearing seat 3 is rotatably provided with a second gear 52 meshing with the first gear 510, the first gear 510 and the second gear 52 form a gear set 5, the reverse stop member 41 is a reverse stop shaft body 410 fixedly connected to the second gear 52, and the output shaft of the power source 1 is arranged in cooperation with the first gear 510; the torque adjustment mechanism 43 acts on the reverse stop shaft body 410.

[0033] During actual use, the gear set 5 (the first gear 510 and the second gear 52 are meshed) is used as the common transmission part 51. Gear transmission has the advantages of accurate transmission ratio, high transmission efficiency, reliable operation, long service life, etc. It can ensure the stable and precise transmission of the power of the power source 1 to the telescopic rod of the telescopic cylinder component 2, make the extension or retraction movement of the telescopic rod smoother and more accurate, and improve the working accuracy and stability of the electric cylinder. The reverse stop member 41 adopts a reverse stop shaft body 410 fixedly connected to the second gear 52, and the structural design is simple. When reverse stop is required, the torque adjustment mechanism 43 acts on the reverse stop shaft body 410, and then generates a reverse torque on the second gear 52 fixedly connected to the reverse stop shaft body 410. Since the second gear 52 meshes with the first gear 510, the reverse stop function of the entire transmission system is realized, effectively preventing the accidental movement of the load part. This structure is easy to manufacture, install and maintain.

[0034] The torque adjustment mechanism 43 acts on the non-return shaft body 410 and can directly and accurately adjust the magnitude of the non-return torque. Since the non-return shaft body 410 is directly connected to the second gear 52, the force exerted by the torque adjustment mechanism 43 on the non-return shaft body 410 can be quickly and accurately transmitted to the gear set 5, thereby achieving precise control of the non-return torque to meet the requirements of different loads and working conditions.

[0035] Specifically, the electric cylinder with non-return multifunction further includes a clutch mechanism 42. The clutch mechanism 42 has a threaded sleeve 421, a limiting member 422 and an elastic element 423. The threaded sleeve 421 is screwed to the bearing seat 3; the limiting member 422 is arranged on the non-return member 41, and the threaded sleeve 421 is used to cooperate with and abut against the limiting member 422; the non-return member 41 is movably arranged on the bearing seat 3, and the elastic force of the elastic element 423 drives the limiting member 422 to move relative to the bearing seat 3 to drive the non-return member 41 to move; the rotation of the threaded sleeve 421 drives the non-return member 41 to drive the limiting member 422 to move, so that the elastic element 423 is compressed or released, thereby realizing the connection or disconnection between the non-return member 41 and the common transmission member 51.

[0036] In actual use, the setting of the clutch mechanism 42 enables the connection or disconnection between the non-return member 41 and the common transmission member 51. When the non-return function is required, by rotating the threaded sleeve 421, the non-return member 41 is connected to the common transmission member 51, and the non-return member 41 can play a role in providing an opposite torque to the load to prevent accidental movement; when the non-return function is not required (such as the normal telescopic adjustment of the electric cylinder and the working condition without non-return requirement), the threaded sleeve 421 can be rotated to disconnect the non-return member 41 from the common transmission member 51, avoiding unnecessary obstruction of the non-return member 41 to the normal transmission, increasing the flexibility of the use of the electric cylinder, and making it adaptable to more diverse working scenarios.

[0037] The rotation of the threaded sleeve 421 can not only realize the connection or disconnection between the non-return member 41 and the common transmission member 51, but also adjust the non-return torque by compressing or releasing the elastic element 423. When connecting the non-return member 41, by controlling the rotation degree of the threaded sleeve 421, the compression amount of the elastic element 423 can be accurately controlled, and then the torque magnitude exerted by the non-return member 41 on the common transmission member 51 can be precisely adjusted, organically combining the clutch control and torque adjustment functions, simplifying the operation process and improving the control accuracy. The elastic element 423 in the clutch mechanism 42 is not only used to provide the elastic force for the movement of the non-return member 41, but also can play a certain buffering role during the non-return process. When the load has an accidental movement trend, the elastic element 423 can absorb part of the impact force, avoiding rigid collision between the non-return member 41 and the common transmission member 51, protecting the components of the non-return assembly 4 and the transmission system, and extending the service life of the equipment.

[0038] Due to the flexible control over the connection or disengagement of the check member 41 and the common transmission member 51 and the adjustment of the check torque, the electric cylinder can better adapt to the load changes under different working conditions. Whether it is a light load or a heavy load, as well as external forces of different directions and magnitudes, the check performance can be optimized by adjusting the clutch mechanism 42 to ensure the stable operation and working efficiency of the electric cylinder.

[0039] Specifically, a bushing 427 is slidably arranged on the bearing seat 3. The bushing 427 is provided with a shoulder for abutting against the bearing seat 3, and the bushing 427 is sleeved outside the check member 41. The two ends of the elastic element 423 act on the bearing seat 3 and the bushing 427 respectively. The bearing seat 3 is provided with a threaded hole, a limiting member 422 is located in the threaded hole, one end of a threaded sleeve 421 has a threaded post screwed in the threaded hole, and the free end of the threaded post is used for abutting against the limiting member 422. The threaded sleeve 421 has a disk protrusion ring located outside the bearing seat 3 for easy gripping.

[0040] In actual use, the bearing seat 3 is provided with a threaded hole, and the threaded sleeve 421 is screwed in the threaded hole through the threaded post. This threaded connection method is convenient for installation and disassembly. Moreover, the threaded sleeve 421 has a disk protrusion ring located outside the bearing seat 3 for easy gripping, so that the operator can easily rotate the threaded sleeve 421 by hand to adjust the connection or disengagement between the check member 41 and the common transmission member 51, as well as the compression degree of the elastic element 423. The whole operation process is simple and intuitive, reducing the operation difficulty and improving the working efficiency. The bushing 427 is slidably arranged on the bearing seat 3 and sleeved outside the check member 41, and the two ends of the elastic element 423 act on the bearing seat 3 and the bushing 427 respectively. Such a setting provides a stable installation and acting structure for the elastic element 423. The shoulder of the bushing 427 can effectively limit the position of the elastic element 423, enabling it to remain stable during the compression and release processes, ensuring that the elastic element 423 can accurately transmit the elastic force to the check member 41, and further precisely controlling the movement of the check member 41 and the adjustment of the check torque.

[0041] The limiting member 422 is located within the threaded hole, and the free end of the threaded post of the threaded sleeve 421 is used to abut against the limiting member 422. This structural design makes the control of the check member 41 by the threaded sleeve 421 more reliable. Through the cooperation of the threaded sleeve 421 and the limiting member 422, the movement distance of the check member 41 can be precisely controlled, thereby accurately achieving the connection or disengagement between the check member 41 and the common transmission member 51, ensuring the stability and reliability of the check function. The bushing 427 is sleeved outside the check member 41, providing additional support and guidance for the check member 41, making the check member 41 more stable during movement and reducing the possibility of shaking and deviation. This helps to improve the accuracy and reliability of the check function, ensuring that the check member 41 can accurately interact with the common transmission member 51 during the check process and effectively preventing the accidental movement of the load.

[0042] Specifically, the torque adjustment mechanism 43 includes a friction assembly 431 and a friction drive assembly 432 for driving the friction assembly 431 to move; the friction drive assembly 432 drives the friction assembly 431 to move, thereby changing the friction force between the check member 41 and the bearing seat 3, and thus adjusting the magnitude of the check torque applied by the check member 41 to the common transmission member 51.

[0043] During actual use, by driving the friction assembly 431 to move through the friction drive assembly 432, the magnitude of the friction force between the check member 41 and the bearing seat 3 can be precisely changed. The change in the friction force directly affects the check torque applied by the check member 41 to the common transmission member 51, so that the check torque can be continuously and flexibly adjusted according to actual working requirements. Whether facing small load fluctuations or large external force impacts, the stable operation of the electric cylinder can be ensured by adjusting the check torque, improving the adaptability of the electric cylinder to different working conditions. Compared with some complex torque adjustment mechanisms 43, the method of adjusting the check torque by using friction force is more direct and efficient. The friction drive assembly 432 can quickly respond to operation instructions, drive the friction assembly 431 to change the friction force, and thus quickly adjust the check torque, reducing the adjustment time and improving the working efficiency of the electric cylinder. At the same time, this adjustment method does not require complex mechanical structures or control systems, reducing the manufacturing cost and maintenance difficulty.

[0044] The interaction between the friction assembly 431, the check member 41, and the carrier seat 3 can provide stable frictional force under different working conditions. Even under long-term use or external interference, by reasonably designing the material and structure of the friction assembly 431, the stability and reliability of the check torque can be ensured. This helps prevent the load from slipping or moving unexpectedly when the electric cylinder stops working, improving the safety and reliability of the equipment. Since the magnitude of the frictional force can be flexibly adjusted by the friction drive assembly 432, the check torque applied by the check member 41 to the common transmission member 51 also has a wide adjustment range. The check torque can be adjusted to an appropriate value according to different load weights, working environments, and operating requirements to meet the needs of various complex working conditions, expanding the application range of the electric cylinder.

[0045] Specifically, the friction assembly 431 includes a first friction member 433 fixedly connected to the carrier seat 3 and a second friction member 434 axially movably sleeved outside the check member 41; the friction drive assembly 432 has an adjusting nut 435 screwed onto the check member 41. By rotating the adjusting nut 435, the second friction member 434 is driven to abut against and press the first friction member 433, and the check torque is the frictional torque generated by the pressing force between the first friction member 433 and the second friction member 434.

[0046] In actual use, the friction assembly 431 consists of a first friction member 433 fixed to the carrier seat 3 and a second friction member 434 axially movably sleeved outside the check member 41, and the friction drive assembly 432 only includes an adjusting nut 435 screwed onto the check member 41. This structural design is simple and clear, with a small number of components, relatively simple manufacturing processes, easy production and assembly, and reduced manufacturing costs. By rotating the adjusting nut 435, the movement of the second friction member 434 towards the first friction member 433 and the application of the pressing force can be precisely controlled. Since the check torque is the frictional torque generated by the pressing force between the first friction member 433 and the second friction member 434, the magnitude of the pressing force can be accurately adjusted by adjusting the rotation angle or number of turns of the adjusting nut 435, thereby achieving precise control of the check torque. This enables the electric cylinder to provide appropriate check protection according to different load conditions and working requirements.

[0047] When the adjusting nut 435 drives the second friction member 434 to contact and press against the first friction member 433, the frictional force between the two can stably provide a reverse torque. During the working process, as long as the adjusting nut 435 does not loosen, the reverse torque can remain relatively stable, effectively preventing the load from moving unexpectedly due to external forces and ensuring the working stability and safety of the electric cylinder. This torque adjustment method has good adaptability to different working environments and conditions. Whether in high-temperature, low-temperature environments or workplaces with large vibrations, as long as appropriate friction member materials are selected, the adjusting nut 435 and the friction assembly 431 can work properly, ensuring the adjustability and stability of the reverse torque and enabling the electric cylinder to operate reliably under various complex conditions.

[0048] Specifically, the bearing seat 3 has a first bearing seat 31 for installing the output shaft of the power source 1 and a second bearing seat 32 for installing the reverse shaft body 410. The second bearing seat 32 is installed on the first bearing seat 31. The output shaft of the power source 1 and the reverse shaft body 410 are both installed on the bearing seat through the bearing assembly 33. The bearing assembly 33 includes two support bearings 34 arranged axially opposite to each other. The outer ring of the support bearing 34 is in clearance fit with the bearing seat. The two support bearings 34 are used to support the output shaft or the reverse member 41.

[0049] In actual use, the second bearing seat 32 is installed on the first bearing seat 31. This layered bearing seat installation method makes the installation structure of the output shaft of the power source 1 and the reverse shaft body 410 more stable. A reasonable layout can effectively disperse the forces generated during the operation of each component, reduce structural deformation or damage caused by uneven stress, enhance the stability and reliability of the overall structure of the electric cylinder, and ensure that it can maintain a good working state during long-term operation. The bearing assembly 33 adopts a method of two support bearings 34 arranged axially opposite to each other, with the inner ring of the support bearing 34 in interference fit with the shaft and the outer ring in clearance fit with the bearing seat. This fitting method can provide precise support for the output shaft or the reverse shaft body 410, reduce the radial and axial runout of the shaft during rotation, and improve the rotational accuracy of the shaft system. The high-precision operation of the shaft system can ensure the accurate transmission of the power of the power source 1 to the telescopic cylinder assembly 2 and enable the reverse assembly 4 to accurately perform the reverse function, improving the working precision and performance of the electric cylinder.

[0050] The two support bearings 34 can evenly bear the radial load and axial load generated during the rotation of the output shaft or the reverse member 41. This effectively avoids the situation where a single bearing bears too large a load and causes premature wear or damage, extends the service life of the bearing, and thus improves the overall reliability and durability of the electric cylinder. At the same time, the uniform load distribution also helps to reduce the vibration and noise during equipment operation and improve the working environment.

[0051] Specifically, the check member 41 is provided with an internal thread 436, and the adjusting nut 435 is screwed in cooperation with the internal thread 436; the outer diameter of the first friction member 433 is larger than the maximum outer diameter of the adjusting nut 435; the second friction member 434 has a frustum-shaped structure, and its outer diameter dimension gradually increases from the end close to the adjusting nut 435 to the side of the first friction member 433, and a conical surface mating structure is formed between the second friction member 434 and the first friction member 433. By driving the second friction member 434 to displace through the adjusting nut 435, the contact pressure between the first friction member 433 and the second friction member 434 is adjusted.

[0052] In actual use, the check member 41 is provided with an internal thread 436 that is screwed in cooperation with the adjusting nut 435. By rotating the adjusting nut 435, the second friction member 434 can be accurately driven to move axially along the check member 41. Since the second friction member 434 has a frustum shape and forms a conical surface mating structure with the first friction member 433, as the second friction member 434 displaces, the contact area and contact pressure between it and the first friction member 433 will change, so that the frictional torque between the two, that is, the check torque, can be efficiently adjusted. This adjustment method can achieve continuous and fine adjustment of the check torque to adapt to different loads and working conditions. The conical surface mating structure makes the contact between the first friction member 433 and the second friction member 434 closer and more stable. During the working process, even under the influence of external factors such as vibration and impact, the interaction force between the conical surfaces can ensure that the frictional torque between the two is relatively stable, and it is not easy to loosen or slip, thereby improving the reliability and stability of the check function and effectively preventing accidental movement of the load.

[0053] The outer diameter of the first friction member 433 is larger than the maximum outer diameter of the adjusting nut 435. This design can effectively prevent the adjusting nut 435 from interfering with the first friction member 433 during rotation and driving the second friction member 434 to move. Ensure that the adjusting nut 435 can rotate smoothly and accurately drive the second friction member 434, ensure the normal operation of the torque adjustment mechanism 43, and avoid failures and damages caused by component interference. When the conical surface mating structure transmits frictional force, the contact stress distribution can be made more uniform, reducing local wear. At the same time, by reasonably selecting the materials of the first friction member 433 and the second friction member 434, their wear resistance can be further improved. In this way, the service life of the torque adjustment mechanism 43 is extended, the situation of frequent replacement due to wear of the friction members is reduced, the maintenance cost and downtime are reduced, and the overall reliability and economy of the electric cylinder are improved.

[0054] Specifically, the first bearing seat 31 is provided with a rotating driven shaft 35 through a bearing assembly 33. One axial end of the driven shaft 35 is connected to the output shaft of the power source 1, and the other end is connected to the piston rod of the telescopic cylinder assembly 2 through a synchronous pulley assembly 36.

[0055] In actual use, the driven shaft 35 is installed on the first bearing seat 31 through the bearing assembly 33, which can ensure its stable rotation. One end of the driven shaft 35 is connected to the output shaft of the power source 1, and the other end is connected to the piston rod of the telescopic cylinder assembly 2 through the synchronous pulley assembly 36. This connection method enables the power of the power source 1 to be smoothly transmitted to the piston rod, ensuring the stable and accurate telescopic movement of the piston rod. The bearing assembly 33 can effectively support the driven shaft 35, reduce the radial and axial runout during rotation, ensure that there are no large deviations and fluctuations during the power transmission process, and improve the working accuracy and reliability of the electric cylinder.

[0056] The setting of the driven shaft 35 allows for a certain distance between the power source 1 and the telescopic cylinder assembly 2. By connecting through the synchronous pulley assembly 36, it is possible to flexibly arrange the various components of the electric cylinder without affecting the power transmission effect. This design can meet the requirements for spatial layout in some special working scenarios. For example, in the case of limited space or specific installation positions, it is convenient to adjust the relative positions of the power source 1 and the telescopic cylinder assembly 2, expanding the application range of the electric cylinder. The synchronous pulley assembly 36 has the characteristics of high transmission efficiency, and can efficiently transmit the rotation of the driven shaft 35 to the piston rod of the telescopic cylinder assembly 2, reducing the energy loss during the power transmission process. Compared with other transmission methods, synchronous pulley transmission can better ensure the accuracy of the transmission ratio, enabling the piston rod to perform telescopic movement at the expected speed and stroke, and improving the working efficiency and performance of the electric cylinder.

[0057] Specifically, one end of the reverse stop member 41 away from the common transmission member 51 is connected to the detachable handle 6. The reverse stop member 41 is rotatably arranged on the bearing seat 3. One end of the handle 6 is connected to the reverse stop member 41, and the other end is connected to the operation end 61; the user drives the reverse stop member 41 to rotate by holding the operation end 61 to achieve the manual lifting operation of the telescopic cylinder assembly 2.

[0058] In actual use, an L-shaped handle 6 is provided, and one end is fixedly connected to the end of the check member 41, and the other end is an operating end 61. The operator can easily drive the check member 41 to rotate by holding the operating end 61. Compared with directly operating the check member 41, the handle 6 provides a more comfortable and labor-saving operation method, especially when frequent check action control is required, which greatly improves the convenience of operation and reduces the labor intensity of the operator. By driving the check member 41 to rotate by the handle 6, the clutch mechanism 42 and the torque adjustment mechanism 43 can be more accurately coordinated to achieve control of the check action. The operator can accurately adjust the rotation angle and direction of the check member 41 according to actual work requirements, thereby achieving connection or disconnection between the check member 41 and the common transmission member 51, as well as adjusting the size of the check torque. This precise control helps to improve the adaptability and reliability of the electric cylinder in different working scenarios.

[0059] In case of emergency, the operator can quickly operate the check system through the handle 6 to quickly implement the check function and prevent the load from moving dangerously due to unexpected circumstances. The convenient operation of the handle 6 enables the operator to react in the shortest possible time, thus improving the safety and reliability of the electric cylinder in emergency situations.

[0060] In this embodiment, the check member 41 is provided with a shaft ring 426, and the axial ends of the shaft sleeve 427 are respectively used to contact the shaft ring 426 and the limit member 422; a movement gap is provided between the boss of the shaft sleeve 427 and the second bearing seat 32, and the movement gap is set to match the elastic deformation amount of the elastic element 423.

[0061] A movement gap that matches the elastic deformation of the elastic element 423 is set between the boss of the sleeve 427 and the second bearing seat 32, providing sufficient expansion and contraction space for the elastic element 423. During the torque adjustment or clutch operation, the elastic element 423 can be compressed or extended freely, giving full play to its elastic force, driving the sleeve 427 to drive the check member 41 to move, and realize the connection or disconnection between the check member 41 and the common transmission member 51 and the adjustment of the check torque. If there is no such gap, the deformation of the elastic element 423 will be limited, and it cannot work normally, thereby affecting the realization of the check function.

[0062] The two axial ends of the bushing 427 are respectively in contact with the shaft collar 426 and the limiting member 422, and can accurately control the axial movement range of the bushing 427. Thus, under the action of the elastic element 423, the movement position of the check member 41 can also be accurately controlled, so that the connection or disengagement between the check member 41 and the common transmission member 51 is more precise, and the adjustment of the check torque is also more accurate. For example, when adjusting the check torque, the change in the compression amount of the elastic element 423 can be accurately transmitted to the check member 41 through the bushing 427, realizing the fine adjustment of the check torque and improving the control accuracy of the check function of the electric cylinder.

[0063] By setting a reasonable movement clearance and an accurate positioning structure of the bushing 427, an elastic element 423 with an appropriate elastic coefficient can be selected according to different working conditions and load requirements, and its elastic deformation amount can be optimized. In this way, the check system of the electric cylinder can better adapt to different working conditions. Whether it is a light load or a heavy load, it can provide reliable check protection and accurate torque adjustment, expanding the application range of the electric cylinder.

[0064] In this embodiment, the second bearing seat 32 is provided with a bearing end cover 424, the first friction member 433 is installed on the bearing end cover 424, and the two axial ends of the threaded sleeve 421 along the check shaft body 410 are respectively limited by the second bearing seat 32 and the bearing end cover 424.

[0065] During actual use, installing the first friction member 433 on the bearing end cover 424 of the second bearing seat 32 can provide a stable and reliable installation foundation for the first friction member 433. The bearing end cover 424 and the second bearing seat 32 are tightly fitted, ensuring that the first friction member 433 will not loosen or displace during the working process, thereby ensuring the stable friction between the first friction member 433 and the second friction member 434, making the generation and adjustment of the check torque more reliable, and effectively improving the stability and accuracy of the check function. The two axial ends of the threaded sleeve 421 along the check shaft body 410 are respectively limited by the second bearing seat 32 and the bearing end cover 424. This limiting method can accurately control the position of the threaded sleeve 421 and prevent unnecessary axial movement. The stable position of the threaded sleeve 421 is crucial for the operation of driving the second friction member 434 to contact and press against the first friction member 433 by rotating it, ensuring that the torque adjustment mechanism 43 can work accurately and stably, and further realizing the accurate adjustment of the check torque.

[0066] The setting of the bearing end cover 424 makes the installation and disassembly of the first friction member 433 more convenient. During installation, the first friction member 433 can be first installed on the bearing end cover 424, and then the bearing end cover 424 can be installed on the second bearing seat 32; during disassembly, only the bearing end cover 424 needs to be disassembled to easily remove the first friction member 433 for inspection, maintenance or replacement. Similarly, the installation and disassembly of the threaded sleeve 421 are also more convenient due to this limiting structure, reducing the difficulty and workload of equipment maintenance. The stable installation of the first friction member 433 and the precise limiting of the threaded sleeve 421 reduce the probability of failures caused by component loosening or displacement. During the long-term operation of the electric cylinder, each component can maintain a good working state, and the reverse stop function and torque adjustment function can continuously and stably play their roles, thereby improving the reliability and service life of the electric cylinder system, and reducing the maintenance cost and downtime of the equipment.

[0067] In this embodiment, the first gear 510 and the second gear 52 are both bevel gears 520, and the axial direction of the output shaft of the power source 1 and the axial direction of the reverse stop shaft body 410 are arranged in a crosswise manner.

[0068] During actual use, the first gear 510 and the second gear 52 are bevel gears 520, and the axial direction of the output shaft of the power source 1 and the axial direction of the reverse stop shaft body 410 are arranged in a crosswise manner, which can greatly optimize the internal space layout of the electric cylinder. It can break through the space limitation of traditional parallel-axis transmission, adapt to complex installation environments, integrate power transmission and reverse stop functions within a limited space, facilitate the compact design of the equipment, and is especially suitable for application scenarios with strict requirements for space dimensions. The bevel gear 520 can achieve power transmission between intersecting shafts. Compared with ordinary cylindrical gears, it can accurately change the torque direction output by the power source 1 to meet the specific requirements of the telescopic cylinder body assembly 2 for the power transmission direction. This special transmission method can also efficiently transmit power, reduce energy loss, ensure that the output shaft of the power source 1 stably drives the telescopic rod of the telescopic cylinder body assembly 2 to extend or retract, and improve the overall operation efficiency of the electric cylinder.

[0069] The crosswise layout of the output shaft of the power source 1 and the reverse stop shaft body 410, combined with the transmission of the bevel gear 520, makes the force more direct and effective when the reverse stop shaft body 410 applies a reverse stop torque to the second gear 52. The reverse stop shaft body 410 can better resist the reverse acting force exerted by the load member on the telescopic rod, enhance the ability of the reverse stop assembly 4 to provide an opposite torque for the load member, effectively prevent the unexpected movement of the load member due to external forces, and improve the operation safety and stability of the equipment.

[0070] In this embodiment, the electric cylinder further includes an intelligent control system, which is respectively connected to the clutch mechanism 42, the torque adjustment mechanism 43, and the power source 1. Through a preset program logic, it automatically controls the clutch mechanism 42 to switch between the non-return / non-non-return state and adjusts the torque output by the torque adjustment mechanism 43 according to the working state of the electric cylinder, realizing the intelligent and automated operation of the electric cylinder.

[0071] During actual use, the intelligent control system automatically regulates the clutch mechanism 42 and the torque adjustment mechanism 43 according to the preset program logic, without manual operation, greatly improving the automation level of the electric cylinder. It is suitable for various complex and high-precision automated production lines, improving production efficiency and continuity. It can dynamically adjust the non-return / non-non-return state and output torque in real time according to the working state of the electric cylinder, such as load changes and running speed. Increase the torque during heavy loads and adjust in a timely manner during light loads to ensure that the equipment is always in the best operating state, improving working accuracy and stability. Avoid equipment failures caused by manual misoperations. The stable and precise automatic control reduces component wear and impact, extends the service life of the electric cylinder and its components, reduces equipment maintenance costs, and improves overall reliability and safety.

[0072] In this embodiment, an angle sensor is further installed on the bearing seat 3. The angle sensor is connected to the non-return shaft body 410 and is used to monitor the rotation angle of the non-return shaft body 410 in real time and feedback the angle signal to the intelligent control system, so as to accurately control the positioning accuracy of the electric cylinder in the non-return state.

[0073] During actual use, the angle sensor monitors the rotation angle of the non-return shaft body 410 in real time and feeds back the accurate angle signal to the intelligent control system. The system precisely regulates accordingly to ensure that the electric cylinder can be accurately positioned in the non-return state, meeting the working scenarios with strict requirements for position accuracy. Based on the real-time angle feedback, the intelligent control system can promptly detect abnormal rotation of the non-return shaft body 410 and make rapid adjustments to avoid equipment jitter or unstable operation caused by angle deviation, ensuring the smooth operation of the electric cylinder and extending the service life of the equipment. The angle sensor provides key data support for the intelligent control system, enabling it to flexibly adjust the control strategy according to the angle change of the non-return shaft body 410, further improving the intelligent level of the electric cylinder and realizing more efficient and intelligent automated operation.

[0074] In this embodiment, a pressure detection device is provided inside the cylinder block assembly for detecting the pressure change inside the cylinder. The pressure detection device is electrically connected to the torque adjustment mechanism 43. When the pressure inside the cylinder is detected to exceed the preset range, the torque adjustment mechanism 43 automatically increases the non-return torque to prevent the piston rod from accidentally retracting due to abnormal pressure.

[0075] During actual use, the pressure detection device continuously monitors the pressure change in the cylinder body. Once the pressure exceeds the preset range, the torque adjustment mechanism 43 responds quickly and automatically increases the check torque. This effectively prevents the accidental retraction of the piston rod due to abnormal pressure, avoiding possible equipment damage, material leakage, and personal safety accidents caused thereby, and greatly improving the safety and reliability of equipment operation. The pressure detection device is electrically connected to the torque adjustment mechanism 43, forming a real-time feedback adjustment mechanism. It can instantaneously and precisely adjust the check torque according to the dynamic change of the key operating parameter of the pressure in the cylinder body, ensuring that the electric cylinder is always in a safe and stable working state. This intelligent adjustment does not require manual intervention, greatly improving the equipment's ability to handle complex working conditions and ensuring the continuity and efficiency of work.

[0076] In this embodiment, the clutch mechanism 42 further includes a first driver 428 and a displacement sensor. The first driver 428 is connected to the threaded sleeve 421 via a first transmission mechanism 429 and is used to drive the threaded sleeve 421 to rotate, thereby driving the limiting member 424 to axially displace the check shaft body 410; the displacement sensor is used to monitor the axial displacement of the limiting member 424 and feedback the displacement signal to the intelligent control system, and the intelligent control system controls the start and stop of the first driver 428 according to the preset displacement threshold to realize the automatic control of the connection or disconnection between the check shaft body 410 and the gear set 5.

[0077] During actual use, the first driver 428 drives the threaded sleeve 421 to rotate through the first transmission mechanism 429, driving the limiting member 424 to displace, realizing the connection or disconnection between the check shaft body 410 and the gear set 5. Cooperating with the intelligent control system and the displacement sensor, without manual operation, it can be automatically controlled according to the preset threshold, improving the automation level of the electric cylinder operation, applicable to scenarios such as automated production lines, and improving work efficiency. The displacement sensor continuously monitors the axial displacement of the limiting member 424 and feeds back the signal to the intelligent control system. The system precisely controls the start and stop of the first driver 428 according to the preset displacement threshold, can accurately control the action of the clutch mechanism 42, ensure the connection or disconnection between the check shaft body 410 and the gear set 5 at the appropriate position, improve the accuracy and reliability of the electric cylinder work, and avoid faults caused by improper operation or inaccurate control.

[0078] The intelligent control system can flexibly adjust the displacement threshold according to different working requirements and conditions, enabling the clutch mechanism 42 to adapt to a variety of working scenarios. Whether it is necessary to frequently switch between the check and non-check states, or there are precise requirements for the connection and disconnection positions under specific working conditions, it can be satisfied by adjusting the preset parameters, enhancing the versatility and adaptability of the electric cylinder.

[0079] In this embodiment, the torque adjustment mechanism 43 further includes a second driver 437 and a pressure sensor. The second driver 437 is connected to the adjusting nut 435 via a second transmission mechanism 438 and is used to drive the adjusting nut 435 to rotate, thereby adjusting the contact pressure between the second friction member 434 and the first friction member 433. The pressure sensor is arranged between the first friction member 433 and the second friction member 434 and is used to detect the contact pressure between the two in real time and feedback the pressure signal to the intelligent control system. The intelligent control system controls the operation of the second driver 437 according to a preset pressure value to realize the automatic adjustment of the output torque and the reverse torque of the output shaft.

[0080] During actual use, by means of the second driver 437 driving the adjusting nut 435, combined with the feedback of the pressure sensor and the intelligent control system, the contact pressure between the second friction member 434 and the first friction member 433 can be automatically and accurately adjusted according to the preset pressure value, thereby realizing the automatic control of the output shaft torque and the reverse torque, meeting the requirements of various complex working conditions for precise torque control, and greatly improving the operation accuracy and stability of the equipment. The pressure between the moving second friction members 434 is monitored in real time. When the pressure deviates from the preset value, the intelligent control system quickly adjusts the operation of the second driver 437 to avoid problems such as excessive wear of the friction plates and unstable equipment operation caused by abnormal pressure, reduce the probability of equipment failures, extend the overall service life of the equipment, and ensure the long-term reliable operation of the equipment.

[0081] The intelligent control system can flexibly modify the preset pressure value according to different working scenarios and load requirements. Whether it is heavy load, light load or a working condition that requires frequent torque adjustment, the torque adjustment mechanism 43 can quickly respond and accurately adjust, significantly enhancing the adaptability of the electric cylinder to diverse working environments and broadening its application range. The operator only needs to set the target pressure value in the intelligent control system, and the system can automatically complete the whole process of torque adjustment, eliminating the need for cumbersome manual adjustment, reducing the operation difficulty, improving the work efficiency, and at the same time reducing the errors caused by improper manual operation, providing a more convenient and efficient operation experience for the operator.

[0082] In this embodiment, the friction assembly 431 has a spring group 439. The second friction member 434 abuts against the first friction member 433 through the pre-tightening force of the spring group 439. The adjusting nut 435 drives the second friction member 434 to compress the spring group 439 to adjust the abutting pressure. When the reverse shaft body 410 bears a reverse torque, the spring group 439 releases stored energy to increase the contact pressure, thereby preventing the reverse shaft body 410 from rotating in reverse. The spring group 439 is a disc spring 4390, and the adjustable range of the pre-tightening force is 500 - 2000N. When the rotation speed of the reverse shaft body 410 exceeds the set threshold value, the spring group 439 releases stored energy within 50ms, increasing the contact pressure to 120% - 150% of the rated value.

[0083] During actual use, the design of the spring group 439 enables the friction assembly 431 to have an adaptive adjustment ability. During normal operation, the second friction member 434 abuts against the first friction member 433 through the pre-tightening force of the spring group 439 to maintain a certain contact pressure for torque transmission. When the non-return shaft body 410 bears a reverse torque, the spring group 439 releases the stored energy and automatically increases the contact pressure, thereby effectively preventing the non-return shaft body 410 from reversing. This adaptive adjustment does not require the intervention of a complex external control system and can respond to torque changes in real time and quickly, ensuring the stable operation of the electric cylinder under complex working conditions. The spring group 439 uses disc springs 4390, and the adjustable range of the pre-tightening force is 500 - 2000 N, which provides great flexibility for users. Users can accurately adjust the pre-tightening force of the spring group 439 according to actual working requirements, such as different load weights, working environments, etc. Under light load conditions, the pre-tightening force can be set at a lower level to reduce unnecessary energy loss and friction plate wear; while under heavy load conditions, the pre-tightening force is increased to ensure sufficient contact pressure for torque transmission and non-return function.

[0084] When the rotation speed of the non-return shaft body 410 exceeds the set threshold, the spring group 439 can release the stored energy within 50 ms, increasing the contact pressure to 120% - 150% of the rated value. This rapid response mechanism is crucial for ensuring the safety and stable operation of the equipment. In some high-speed rotating equipment, when an abnormal situation causes the rotation speed of the non-return shaft body 410 to suddenly increase, the spring group 439 can react within an extremely short time, quickly increasing the contact pressure to effectively prevent the further reverse rotation of the non-return shaft body 410 and prevent equipment damage or safety accidents caused by out-of-control rotation speed.

[0085] The above is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form an equivalent embodiment with equivalent changes, but as long as it does not depart from the technical content of the present invention, any brief modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An electric cylinder with reverse-stop multifunction, comprising a power source (1), a telescopic cylinder body assembly (2) and a bearing seat (3), characterized in that: It further includes a check component (4). The power source (1), the telescopic cylinder component (2), and the check component (4) are all arranged on the bearing seat (3). The bearing seat (3) has a shared transmission part (51). The power source (1) drives the telescopic rod of the telescopic cylinder component (2) to extend or retract via the shared transmission part (51). The check component (4) acts on the shared transmission part (51) to provide an opposite torque for the load applied to the telescopic rod of the telescopic cylinder component (2). The check component (4) has a check member (41) acting on the shared transmission part (51) and a torque adjustment mechanism (43). The torque adjustment mechanism (43) regulates the magnitude of the torque applied by the check member (41) to the shared transmission part (51).

2. The electric cylinder with reverse-stop multifunction according to claim 1, characterized in that: The shared transmission part (51) is a first gear (510) rotatably arranged on the bearing seat (3). The bearing seat (3) is rotatably provided with a second gear (52) meshing with the first gear (510). The first gear (510) and the second gear (52) form a gear set (5). The check member (41) is a check shaft body (410) fixedly connected to the second gear (52). The output shaft of the power source (1) is arranged in cooperation with the first gear (510). The torque adjustment mechanism (43) acts on the check shaft body (410).

3. The electric cylinder with reverse stop and multiple functions according to claim 1, characterized in that: The electric cylinder with check multifunction further includes a clutch mechanism (42). The clutch mechanism (42) has a threaded sleeve (421), a limiting member (422), and an elastic element (423). The threaded sleeve (421) is screwed onto the bearing seat (3). The limiting member (422) is arranged on the check member (41). The threaded sleeve (421) is used to cooperate with and abut against the limiting member (422). The check member (41) is movably arranged on the bearing seat (3). The elastic force of the elastic element (423) drives the limiting member (422) to move relative to the bearing seat to drive the check member (41) to move. The rotation of the threaded sleeve (421) drives the check member (41) to drive the limiting member (422) to move, so that the elastic element (423) is compressed or released, thereby realizing the connection or disconnection between the check member (41) and the shared transmission part (51).

4. The electric cylinder with reverse stop and multi - functions according to claim 3, characterized in that: The bearing seat (3) is slidably provided with a bushing (427). The bushing (427) is provided with a shoulder for abutting against the bearing seat (3). The bushing (427) is sleeved outside the check member (41). The two ends of the elastic element (423) act on the bearing seat (3) and the bushing (427) respectively. The bearing seat (3) is provided with a threaded hole. The limiting member (422) is located in the threaded hole. One end of the threaded sleeve (421) has a threaded post screwed into the threaded hole. The free end of the threaded post is used to abut against the limiting member (422). The threaded sleeve (421) has a disk protrusion ring outside the bearing seat (3) for easy gripping.

5. The electric cylinder with reverse stop and multi - functions according to claim 1, wherein: The torque adjustment mechanism (43) includes a friction assembly (431) and a friction drive assembly (432) for driving the friction assembly (431) to move. The friction drive assembly (432) drives the friction assembly (431) to move, thereby changing the frictional force between the reverse-stop member (41) and the carrier seat (3), so as to adjust the magnitude of the reverse-stop torque applied by the reverse-stop member (41) to the common transmission member (51).

6. The electric cylinder with backstop multifunction according to claim 5, characterized in that: The friction assembly (431) includes a first friction member (433) fixedly connected to the carrier seat (3) and a second friction member (434) axially movably sleeved outside the reverse-stop member (41). The friction drive assembly (432) has an adjusting nut (435) screwed onto the reverse-stop member (41). By rotating the adjusting nut (435), the second friction member (434) is driven to abut against and press the first friction member (433). The reverse-stop torque is the frictional torque generated by the pressing force between the first friction member (433) and the second friction member (434).

7. The electric cylinder with reverse-stop multifunction according to claim 2, characterized in that: The carrier seat (3) has a first bearing seat (31) for mounting the output shaft of the power source (1) and a second bearing seat (32) for mounting the reverse-stop shaft body (410). The second bearing seat (32) is mounted on the first bearing seat (31). The output shaft of the power source (1) and the reverse-stop shaft body (410) are both mounted on the bearing seats through bearing assemblies (33). The bearing assemblies (33) include two support bearings (34) axially arranged opposite to each other. The outer rings of the support bearings (34) are in clearance fit with the bearing seats. The two support bearings (34) are used to support the output shaft or the reverse-stop member (41).

8. The electric cylinder with backstop multifunction according to claim 6, characterized in that: The reverse-stop member (41) is provided with an internal thread (436), and the adjusting nut (435) is in screw fit with the internal thread (436). The outer diameter of the first friction member (433) is larger than the maximum outer diameter of the adjusting nut (435). The second friction member (434) has a frustum-shaped structure. From the end close to the adjusting nut (435) to the side of the first friction member (433), its outer diameter size gradually increases. And a tapered surface fit structure is formed between the second friction member (434) and the first friction member (433). By driving the second friction member (434) to displace through the adjusting nut (435), the contact pressure between the first friction member (433) and the second friction member (434) can be adjusted.

9. An electric cylinder with a check valve and multiple functions according to claim 7, characterized in that: The first bearing seat (31) is mounted with a rotating driven shaft (35) through a bearing assembly (33). One axial end of the driven shaft (35) is connected to the output shaft of the power source (1), and the other end is connected to the piston rod of the telescopic cylinder assembly (2) through a synchronous pulley assembly (36).

10. The electric cylinder with reverse-stop multifunction according to claim 1, characterized in that: One end of the reverse-stop member (41) away from the common transmission member (51) is connected to a detachable handle (6). The reverse-stop member (41) is rotatably arranged on the carrier seat (3). One end of the handle (6) is connected to the reverse-stop member (41), and the other end is connected to an operating end (61). The user drives the reverse-stop member (41) to rotate by holding the operating end (61) to realize the manual lifting operation of the telescopic cylinder assembly (2).

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