Servo electric cylinder with noise reduction function

Abstract

The invention relates to the field of electric cylinders, in particular to a servo electric cylinder with a noise reduction function, which comprises a cylinder body, one end of the cylinder body is provided with a front end cover, and one side of the front end cover is provided with an oil collecting mechanism; a servo motor is mounted at the other end of the cylinder body; according to the lubricating device, when the piston rod and the cylinder body, the lead screw and the lead screw nut are lubricated, a plurality of first spray heads arranged on the first oil converter and a second spray head arranged on the tail end oil spraying assembly are used for spraying oil, the friction position of a part can be lubricated more comprehensively, noise generated by friction is reduced, and the service life of the part is prolonged. The problems that in the prior art, due to the fact that the lubricating effect is insufficient, noise is caused, vibration is caused by abrasion of parts, and under the condition that the lubricating effect of internal parts such as a bearing and a gear is insufficient, vibration is possibly caused in the operation process of an electric cylinder, the motion precision and stability of the electric cylinder are affected, and noise is caused are solved.

Description

Technical Field

[0001] The invention relates to the field of electric cylinders, and in particular to a servo electric cylinder with a noise reduction function. Background Art

[0002] An electro-hydraulic servo booster cylinder with application number CN202211161303.2 includes a connecting seat, an electro-hydraulic tube, a connecting cover, a connecting rod, a servo motor, a socket, a quick release mechanism, a quick connection mechanism, a guide mechanism, a square block, a square cover, and a telescopic rod. The connecting seat is fixedly connected to the electro-hydraulic tube, a connecting cover is installed at the outer rear end of the electro-hydraulic tube, a connecting rod is fixedly connected to the connecting cover, the connecting rod is slidably connected to the connecting seat, a servo motor is slidably connected to the connecting seat, the servo motor is fixedly connected to the socket, a quick release mechanism is provided on the connecting seat, a quick connection mechanism is provided on the connecting seat, a guide mechanism is provided inside the electro-hydraulic tube, and a square block is fixedly connected to the output shaft of the servo motor. The invention relates to an electro-hydraulic servo booster cylinder, which has the characteristics of easy maintenance of the servo motor, easy maintenance of the electro-hydraulic tube and extended service life of the telescopic rod.

[0003] In the prior art including the above-mentioned patent, there is a noise problem caused by insufficient lubrication. Vibration is caused by wear of components. If the lubrication effect of internal components such as bearings and gears is insufficient, the electric cylinder may vibrate during operation, thereby affecting its motion accuracy and stability, and causing noise. It is necessary to manually disassemble the equipment and inject lubricating fluid into the interior, which is cumbersome to operate, with a short maintenance cycle and a large amount of manual maintenance labor.

[0004] Therefore, it is necessary to invent a servo electric cylinder with noise reduction function to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a servo electric cylinder with a noise reduction function. By lubricating the piston rod and the cylinder body, and between the lead screw and the lead screw nut, multiple first nozzles arranged on the first oil converter and the second nozzles arranged on the tail end oil injection assembly can more comprehensively lubricate the friction positions of the parts when spraying oil, thereby reducing the noise caused by friction, so as to solve the noise problem caused by insufficient lubrication effect in the prior art. Due to vibration caused by wear of parts, insufficient lubrication effect of internal parts such as bearings, gears, etc., the electric cylinder may vibrate during operation, thereby affecting its movement accuracy and stability, and causing noise problems.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a servo electric cylinder with noise reduction function, comprising a cylinder body, a front end cover is installed at one end of the cylinder body, and an oil collection mechanism is provided on one side of the front end cover; A servo motor is installed at the other end of the cylinder body, a screw is connected to the power output shaft of the servo motor, a piston rod is threadedly connected to the outer side of the screw, a screw nut is sleeved on the outer side of the piston rod, and a mounting piece is connected to one end of the screw nut; An oil storage tank is provided on the top of the cylinder body, one end of the oil storage tank is connected to a front-end oil injection assembly through a pipeline, the other end of the oil storage tank is connected to a tail-end oil injection assembly through a pipeline, one end of the tail-end oil injection assembly is connected to an electric valve through a pipeline, the electric valve is communicated with the inner cavity of the oil storage tank, and one end of the oil storage tank is connected to an output end of an oil pump device through a hose.

[0007] The oil collection mechanism comprises a collection cover, the collection cover is connected to the side wall of the front end cover, an inner cavity of the collection cover is provided with an oil passage, and the inner cavity of the oil passage is provided with a plurality of anti-return plates arranged in an arc shape; A circular opening is provided on the inner wall of the oil passage, a limiting strip is provided in the inner cavity of the circular opening, a counterweight block is provided at one end of the limiting strip, and a sealing plug is provided at the other end of the limiting strip; The inner cavity of the collecting cover is provided with a groove, the inner side wall of the groove is provided with a fixing frame, and one end of the limiting strip is slidably connected to the fixing frame; An oil discharge port communicated with the oil channel is provided at the bottom of the collecting cover.

[0008] As a preferred solution of the present invention, the front-end fuel injection assembly includes a first oil converter, the top of the first oil converter is connected to the oil storage tank through a pipeline, one side of the first oil converter is provided with a plurality of first nozzles arranged in a ring, the first nozzles are communicated with the first oil converter, the other side of the first oil converter is slidably connected with a second contact rod that cooperates with the mounting part, one end of the second contact rod is connected to a movable sealing plate, the first oil converter is provided with a cavity for the movable sealing plate to slide, the cavity, the pipeline and the plurality of first nozzles are communicated, and one side of the movable sealing plate is connected to the side wall of the cavity through a spring.

[0009] As a preferred solution of the present invention, the tail-end fuel injection assembly includes a second oil converter, one end of the second oil converter is provided with a plurality of second nozzles arranged in a ring shape, the second oil converter is provided with a plurality of nozzles arranged in a ring shape, and the second oil converter is connected to the inner cavity of the oil storage tank through a pipeline.

[0010] As a preferred solution of the present invention, a sound insulation frame is sleeved on the outer side of the cylinder body, a plurality of arcuate grooves are opened on the inner side wall of the sound insulation frame, and a plurality of rubber sheets arranged in an array are provided on the inner side wall of the arcuate groove.

[0011] As a preferred solution of the present invention, a hydraulic pipe is provided on one side of the oil storage tank, and the other end of the hydraulic pipe is connected to the output end of the pressure pump.

[0012] As a preferred solution of the present invention, a plurality of electric limit rods arranged in a ring shape are provided on the outer side wall of the cylinder body, one end of the plurality of electric limit rods is located on the sound insulation frame, the other end of the electric limit rod is connected to a limit block, and one side of the limit block is provided with an arc surface matching with the outer side wall of the piston rod.

[0013] As a preferred solution of the present invention, the mounting member is mounted on one side of the screw nut, and a first contact rod corresponding to the position of the second contact rod is provided on the side wall of the mounting member.

[0014] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows: 1. During the operation of the equipment, by lubricating between the piston rod and the cylinder body, and between the screw and the screw nut, the multiple first nozzles arranged on the first oil converter and the second nozzles arranged on the tail end oil spraying assembly can more comprehensively lubricate the friction positions of the parts when spraying oil, thereby reducing the noise caused by friction; Secondly, with the arc groove and rubber sheet set in the sound insulation frame, the noise generated during equipment operation can bounce back and forth repeatedly in the arc groove, and effectively weaken the amplitude of sound vibration after contacting the rubber sheet, thereby achieving the effect of isolation and sound reduction, and reducing the impact of noise on the working environment and personnel.

[0015] 2. When the reciprocating motion of the piston rod drives the first contact rod to contact the second contact rod, the linkage is triggered to open, and the hydraulic oil flows in to lubricate the piston rod. This process not only cleverly uses the movement of the equipment itself to achieve automatic oil filling, and completely eliminates the need for manual lubrication, greatly improving work efficiency and reducing labor costs, but also continuous and stable lubrication ensures that the piston rod and the cylinder body maintain a good operating state, reduces component wear, effectively extends the overall service life of the equipment, and ensures the stability and reliability of the equipment during long-term operation.

[0016] 3. When the piston rod reciprocates and telescopes, causing the lubricating fluid to leak at the front end of the front cover, the collecting hood can guide the lubricating fluid along the arc-shaped groove to the inner cavity of the collecting hood. During this process, the counterweight block is affected by gravity to automatically seal and open the oil inlet of the collecting hood. After the oil flows into the collecting hood, the check plate can block the oil to prevent it from overflowing. When the internal oil is stored to a certain level, the personnel can manually open the oil discharge port to release the stored oil, thereby realizing the effective collection and treatment of the leaked lubricating fluid and avoiding the waste of oil and the oil pollution caused by the oil penetrating to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a partial cross-sectional structural schematic diagram of the present invention; Figure 3 It is a partial cross-sectional structural schematic diagram of the sound insulation frame of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the tail end fuel injection assembly of the present invention; Figure 5 It is a schematic cross-sectional structural diagram of a front-end fuel injection assembly of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at D in the middle; Figure 7 It is a schematic diagram of the screw nut structure of the present invention; Figure 8 It is a schematic diagram of the structure of the electric limit rod and the limit block of the present invention; Fig. 9 It is a schematic diagram of the overall planar cross-sectional structure of the present invention; Fig.10 For the present invention Fig. 9 The enlarged structural diagram at A in the middle; Fig.11 For the present invention Fig. 9 The enlarged structural diagram at B in the middle; Fig.12 For the present invention Fig. 9 Enlarged structural diagram at point C in the middle.

[0019] Description of reference numerals: 1. Cylinder body; 2. Front cover; 3. Oil collection mechanism; 31. Collection cover; 32. Check plate; 33. Limiting strip; 34. Counterweight; 35. Sealing plug; 36. Fixed frame; 4. Servo motor; 5. Piston rod; 6. Screw nut; 7. Mounting member; 71. First contact rod; 8. Oil storage tank; 81. Front end oil injection assembly; 811. First oil converter; 812. First nozzle; 813. Second contact rod; 814. Movable sealing plate; 82. Tail end oil injection assembly; 821. Second oil converter; 822. Second nozzle; 9. Electric valve; 10. Sound insulation frame; 11. Electric limit rod; 110. Limit block. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] The present invention provides Figure 1-Figure 12 A servo electric cylinder with noise reduction function shown in the figure comprises a cylinder body 1, a front end cover 2 is installed at one end of the cylinder body 1, and an oil collection mechanism 3 is provided on one side of the front end cover 2; a servo motor 4 is installed at the other end of the cylinder body 1, a screw is connected to the power output shaft of the servo motor 4, a piston rod 5 is threadedly connected to the outer side of the screw, a screw nut 6 is sleeved on the outer side of the piston rod 5, and a mounting piece 7 is connected to one end of the screw nut 6; an oil storage tank 8 is provided on the top of the cylinder body 1, and one end of the oil storage tank 8 is connected to a front end oil injection assembly 81 through a pipeline, and the oil storage tank 8 The other end is connected to the tail end injection assembly 82 through a pipeline, one end of the tail end injection assembly 82 is connected to the electric valve 9 through a pipeline, the electric valve 9 is connected to the inner cavity of the oil storage tank 8, and one end of the oil storage tank 8 is connected to the output end of the oil pump equipment through a hose; such a structural design constructs a complete oil delivery and distribution system, which provides a basis for the subsequent lubrication of various components and the stable operation of the equipment, ensuring that the hydraulic oil can be effectively stored and delivered to different front end injection assemblies 81 and tail end injection assemblies 82 as needed to meet the lubrication needs of different components.

[0022] Furthermore, the oil collection mechanism 3 includes a collection cover 31, which is connected to the side wall of the front cover 2. The inner cavity of the collection cover 31 is provided with an oil passage, and the inner cavity of the oil passage is provided with a plurality of arc-shaped check plates 32; a circular opening is provided on the inner wall of the oil passage, and a limit strip 33 is provided in the inner cavity of the circular opening, and a counterweight block 34 is provided at one end of the limit strip 33, and a sealing plug 35 is provided at the other end of the limit strip 33; a groove is provided in the inner cavity of the collection cover 31, and a fixing frame 36 is provided on the inner wall of the groove, and one end of the limit strip 33 is provided with a counterweight block 34, and the other end of the limit strip 33 is provided with a sealing plug 35. It is slidably connected to the fixed frame 36; an oil discharge port connected to the oil channel is provided at the bottom of the collecting cover 31; the oil collecting mechanism 3 can efficiently collect the lubricating liquid leaked during the reciprocating motion of the piston rod 5, the check plate 32 can prevent the oil from overflowing, the counterweight block 34 cooperates with the sealing plug 35 to automatically control the opening and closing of the oil inlet, and the design of the groove and the fixed frame 36 ensures the smoothness and stability of the oil collection, and finally the collected oil can be centrally processed through the oil discharge port to avoid oil waste and environmental pollution.

[0023] Furthermore, the front-end oil injection assembly 81 includes a first oil converter 811, the top of the first oil converter 811 is connected to the oil storage tank 8 through a pipeline, a plurality of first nozzles 812 arranged in a ring are provided on one side of the first oil converter 811, the first nozzles 812 are connected to the first oil converter 811, and a second contact rod 813 cooperating with the mounting member 7 is slidably connected to the other side of the first oil converter 811, one end of the second contact rod 813 is connected to a movable sealing plate 814, and a movable sealing plate 814 is provided inside the first oil converter 811 for sliding movement of the movable sealing plate 814. The cavity, the pipeline and multiple first nozzles 812 are connected, and one side of the movable sealing plate 814 is connected to the side wall of the cavity through a spring; when the front end oil injection assembly 81 is in operation, when the first contact rod 71 and the second contact rod 813 are in contact and linked, the movable sealing plate 814 can be opened, and the hydraulic oil can be converted by the first oil converter 811 and then sprayed out in a ring shape through multiple first nozzles 812, so as to lubricate the outer wall of the piston rod 5 evenly and efficiently, avoid large friction between the piston rod 5 and the cylinder body 1, reduce noise, and extend the service life of the equipment.

[0024] Furthermore, the tail-end oil injection assembly 82 includes a second oil converter 821, one end of which is provided with a plurality of second nozzles 822 arranged in a ring shape, and the second oil converter 821 is provided with a plurality of nozzles arranged in a ring shape, and the second oil converter 821 is connected to the inner cavity of the oil storage tank 8 through a pipeline; when the screw rod needs to be lubricated, the electric valve 9 is started, and the oil in the oil storage tank 8 enters the second oil converter 821, and is sprayed out in a ring shape through the plurality of second nozzles 822, which can lubricate the screw rod in all directions, effectively reduce the friction between the screw rod and the screw rod nut 6, reduce the noise generated by friction, and improve the smoothness and stability of the equipment operation.

[0025] Furthermore, a sound insulation frame 10 is sleeved on the outer side of the cylinder body 1, a plurality of arc grooves are opened on the inner side wall of the sound insulation frame 10, and a plurality of rubber sheets arranged in an array are provided on the inner side wall of the arc groove; the sound insulation frame 10 and the arc groove and rubber sheet structure inside it can make the noise generated by the operation of the equipment rebound repeatedly in the arc groove, and in the process of contact with the rubber sheet, the amplitude of sound vibration is effectively weakened, thereby achieving effective isolation and silencing of the equipment operation noise, and significantly improving the noise conditions of the working environment.

[0026] Furthermore, a hydraulic pipe is provided on one side of the oil storage tank 8, and the other end of the hydraulic pipe is connected to the output end of the pressure pump; by connecting the pressure pump and the oil storage tank 8 through the hydraulic pipe, it can ensure that the pressure pump provides stable and sufficient pressure for the transportation of hydraulic oil in the oil storage tank 8, thereby ensuring the stable supply of hydraulic oil to various lubrication parts of the equipment and maintaining the equipment in a good lubrication state.

[0027] Furthermore, a plurality of electric limit rods 11 arranged in a ring shape are provided on the outer wall of the cylinder body 1, one end of the plurality of electric limit rods 11 is located on the sound insulation frame 10, and the other end of the electric limit rod 11 is connected to a limit block 110, and one side of the limit block 110 is provided with an arc surface that cooperates with the outer wall of the piston rod 5; the setting of the electric limit rod 11 and the limit block 110 can control the extension and contraction of the electric limit rod 11, and use the limit block 110 to accurately limit the movement of the piston rod 5, so as to flexibly control whether the first contact rod 71 and the second contact rod 813 are in contact, thereby realizing the opening and closing of the automatic oil supply function of the equipment, and facilitating adjustment according to actual work needs.

[0028] Furthermore, the mounting member 7 is installed on one side of the screw nut 6, and a first contact rod 71 corresponding to the position of the second contact rod 813 is provided on the side wall of the mounting member 7; the corresponding setting of the first contact rod 71 and the second contact rod 813 on the mounting member 7 enables the front end oil injection assembly 81 to be accurately triggered when the piston rod 5 drives the screw nut 6 to move, thereby realizing automatic and timely lubrication of the piston rod 5, ensuring the smoothness and stability of the equipment operation, while reducing manual intervention and improving work efficiency.

[0029] Working principle: In the first step, the oil pump equipment transports the hydraulic oil to the oil storage tank 8 through the hose, starts the servo motor 4, and drives the screw to rotate through the power output of the servo motor 4, cooperates with the interaction between the threads, and drives the piston rod 5 to perform horizontal telescopic movement in the cylinder body 1. When the piston rod 5 moves, it drives the first contact rod 71 connected to the mounting part 7 to move toward one end of the front end oil injection assembly 81. When the first contact rod 71 contacts the second contact rod 813, it pushes the second contact rod 813 to squeeze the spring, and the movable sealing plate 814 releases the sealing effect on the pipeline. At this time, the hydraulic oil enters the inner cavity of the first oil converter 811 through the pipeline, and is sprayed out through the first nozzle 812 to achieve lubrication of the outer wall of the piston rod 5, avoiding large friction between the piston rod 5 and the cylinder body 1 when the piston rod 5 is telescopically moved, reducing the noise caused by friction, improving the lubrication of the operation, and improving the service life of the equipment; In the second step, when the internal lubricating liquid fully lubricates the outer wall of the piston rod 5, when the lubricating liquid leaks at the front end of the front cover 2 during the reciprocating movement of the piston rod 5, the lubricating liquid flows into the groove through the guide of the collecting cover 31, and flows into the inner cavity of the collecting cover 31 through the arc setting of the groove; It should be noted that, firstly, in this process, the counterweight block 34 is affected by gravity and can automatically seal and open the oil inlet of the collection cover 31, and after the oil flows into the collection cover 31, the check plate 32 can block the oil to prevent the oil from overflowing. When the internal oil is stored to a certain level, the personnel can manually open the oil discharge port to release the internally stored oil; Secondly, it should be noted that when oil lubrication is not required, the sliding distance of the piston rod 5 can be limited to avoid the first contact rod 71 from contacting the second contact rod 813. During the process, the plurality of electric limit rods 11 can be started, and the limit blocks 110 connected to the electric limit rods 11 can be pushed by the extension of the plurality of electric limit rods 11 to limit the mounting member 7, thereby realizing the automatic oil supply function of the closed device; In addition, when the second oil converter 821 needs to lubricate the screw rod, the electric valve 9 can be started to transport the oil in the oil storage tank 8 to the second oil converter 821 through the pipeline, and the oil is sprayed out through the second oil converter 821 through the plurality of second nozzles 822 to lubricate the screw rod, so as to avoid excessive friction between the screw rod and the screw nut 6 when the screw rod rotates, reduce the noise generated by the equipment due to friction, and improve the lubrication effect of the equipment operation, thereby improving the smoothness of the equipment operation; During operation, since the outer side of the screw nut 6 is provided with a plurality of rollers that fit with the inner wall of the cylinder body 1, when sliding, the friction coefficient generated between the rollers and the inner wall of the cylinder body 1 is low, and the lubrication of the lubricating fluid improves the smoothness of the screw nut 6 moving in the cylinder body 1; In the third step, the noise generated when the equipment is running can bounce back and forth repeatedly in the arc groove set in the sound insulation frame 10. During the rebound process, it contacts with the rubber sheet and can effectively weaken the amplitude of the sound vibration after the contact rebound, thereby achieving the effect of isolation and silencing.

[0030] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A servo electric cylinder with noise reduction function, characterized in that: It comprises a cylinder body (1), one end of the cylinder body (1) is mounted with a front end cover (2), and one side of the front end cover (2) is provided with an oil collection mechanism (3); A servo motor (4) is mounted on the other end of the cylinder body (1); a screw is connected to the power output shaft of the servo motor (4); a piston rod (5) is threadedly connected to the outer side of the screw; a screw nut (6) is sleeved on the outer side of the piston rod (5); and a mounting piece (7) is connected to one end of the screw nut (6); An oil storage tank (8) is provided on the top of the cylinder body (1); one end of the oil storage tank (8) is connected to a front-end oil injection assembly (81) via a pipeline; the other end of the oil storage tank (8) is connected to a rear-end oil injection assembly (82) via a pipeline; one end of the rear-end oil injection assembly (82) is connected to an electric valve (9) via a pipeline; the electric valve (9) is in communication with an inner cavity of the oil storage tank (8); and one end of the oil storage tank (8) is connected to an output end of an oil pump device via a hose.

2. The servo electric cylinder with noise reduction function according to claim 1, characterized in that: The oil collection mechanism (3) comprises a collection cover (31), the collection cover (31) is connected to the side wall of the front end cover (2), an inner cavity of the collection cover (31) is provided with an oil passage, and the inner cavity of the oil passage is provided with a plurality of anti-return plates (32) arranged in an arc shape; A circular opening is provided on the inner wall of the oil passage, a limiting strip (33) is provided in the inner cavity of the circular opening, a counterweight (34) is provided at one end of the limiting strip (33), and a sealing plug (35) is provided at the other end of the limiting strip (33); The inner cavity of the collecting cover (31) is provided with a groove, the inner side wall of the groove is provided with a fixing frame (36), and one end of the limiting strip (33) is slidably connected to the fixing frame (36); The bottom of the collecting cover (31) is provided with an oil discharge port which is connected to the oil channel.

3. The servo electric cylinder with noise reduction function according to claim 1, characterized in that: The front-end oil injection assembly (81) comprises a first oil converter (811), the top of which is connected to the oil storage tank (8) via a pipeline, a plurality of first nozzles (812) arranged in a ring are provided on one side of the first oil converter (811), the first nozzles (812) are communicated with the first oil converter (811), a second contact rod (813) matched with the mounting member (7) is slidably connected to the other side of the first oil converter (811), one end of the second contact rod (813) is connected to a movable sealing plate (814), a cavity for sliding the movable sealing plate (814) is provided in the first oil converter (811), the cavity, the pipeline and the plurality of first nozzles (812) are communicated, and one side of the movable sealing plate (814) is connected to the side wall of the cavity via a spring.

4. The servo electric cylinder with noise reduction function according to claim 3, characterized in that: The tail end oil injection assembly (82) comprises a second oil converter (821), one end of the second oil converter (821) is provided with a plurality of second nozzles (822) arranged in an annular shape, the second oil converter (821) is provided with a plurality of nozzles arranged in an annular shape, and the second oil converter (821) is connected to the inner cavity of the oil storage tank (8) through a pipeline.

5. The servo electric cylinder with noise reduction function according to claim 1, characterized in that: A sound insulation frame (10) is sleeved on the outer side of the cylinder body (1), a plurality of arc-shaped grooves are provided on the inner side wall of the sound insulation frame (10), and a plurality of rubber sheets arranged in an array are provided on the inner side wall of the arc-shaped groove.

6. The servo electric cylinder with noise reduction function according to claim 4, characterized in that: A hydraulic pipe is provided on one side of the oil storage tank (8), and the other end of the hydraulic pipe is connected to the output end of the pressure pump.

7. The servo electric cylinder with noise reduction function according to claim 5, characterized in that: A plurality of electric limit rods (11) arranged in a ring shape are provided on the outer wall of the cylinder body (1), one end of the plurality of electric limit rods (11) is located on the sound insulation frame (10), the other end of the electric limit rod (11) is connected to a limit block (110), and one side of the limit block (110) is provided with an arc surface that cooperates with the outer wall of the piston rod (5).

8. The servo electric cylinder with noise reduction function according to claim 3, characterized in that: The mounting member (7) is mounted on one side of the screw nut (6), and a first contact rod (71) corresponding to the position of the second contact rod (813) is provided on the side wall of the mounting member (7).

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