A servo electric cylinder with a buffer protection function

Abstract

The present invention discloses a servo electric cylinder with a buffer protection function, comprising: an electric cylinder power member, which is installed at a predetermined position to provide rotational torque; an electric cylinder pushing member, which is on the electric cylinder power member and transmits the torque of the electric cylinder power member backward; a pushing buffer protection member, which is on the electric cylinder pushing member, receives the torque transmitted by the electric cylinder pushing member, and the pushing buffer protection member cooperates with the electric cylinder pushing member to convert the rotational motion of the electric cylinder power member into a linear motion and output work outward. The present invention has high automation, high telescopic precision, good buffer protection effect, low failure rate, long service life, can automatically adjust the overload value according to different usage conditions, and has a wide application range.

Description

Technical Field

[0001] The present invention relates to the technical field of electric cylinders, and more specifically, to a servo electric cylinder with a buffer protection function. Background Art

[0002] An electric cylinder is a modular product with an integrated design of a servo motor and a lead screw, which converts the rotational motion of the servo motor into a linear motion. At the same time, it transforms the best advantages of the servo motor - precise rotational speed control, precise revolution control, and precise torque control - into - precise speed control, precise position control, and precise thrust control; it is a brand-new revolutionary product for achieving high-precision linear motion series.

[0003] The electric cylinder has advantages such as high efficiency, high integration, strong environmental adaptability, convenient layout, and basically no pollution. However, the existing electric cylinders also have some disadvantages when in use. The electric cylinder transmission mainly consists of a lead screw and a nut, which is a fully rigid transmission system. When facing impact loads or momentary overloads of impact loads, it is easily damaged, resulting in a reduction in the actual life of the electric cylinder in the working conditions of impact loads due to frequent impacts. When the hydraulic cylinder is subjected to impact loads, because its hydraulic oil has a certain flexibility and can have a certain compression amount, it can resist impacts.

[0004] Therefore, it is of great application value to design a servo electric cylinder with a buffer protection function that can accurately and automatically adjust impact loads. Summary of the Invention

[0005] In order to overcome the above defects, the present invention provides a servo electric cylinder with a buffer protection function, and specifically adopts the following technical solutions:

[0006] A servo electric cylinder with a buffer protection function includes:

[0007] An electric cylinder power component, which is installed at a predetermined position to provide rotational torque;

[0008] An electric cylinder pushing component, which is on the electric cylinder power component and transmits the torque of the electric cylinder power component backward;

[0009] A pushing buffer protection component, which is on the electric cylinder pushing component, receives the torque transmitted by the electric cylinder pushing component, and the pushing buffer protection component cooperates with the electric cylinder pushing component to convert the rotational motion of the electric cylinder power component into a linear motion and output work outward.

[0010] Preferably, the electric cylinder power component includes an electric cylinder support seat, a deceleration power component, and a power transmission component. The deceleration power component provides rotational torque on the electric cylinder support seat, and the power transmission component is on the deceleration power component and transmits the rotational torque provided by the deceleration power component to the electric cylinder pushing component.

[0011] Preferably, the electric cylinder pushing member includes a pushing transmission member and a pushing protection member. The pushing transmission member is driven to rotate on the electric cylinder support seat by the torque transmitted by the power transmission member, and the pushing protection member is on the electric cylinder support seat to provide protection for the pushing transmission member and the pushing buffer protection member.

[0012] Preferably, the pushing buffer protection member includes a buffer protection member, an automatic buffer adjustment member, and a force-applying pushing member. The buffer protection member is axially reciprocated and pushed on the pushing transmission member, and the buffer protection member provides an axial buffer force. The automatic buffer adjustment member automatically adjusts the overload buffer value of the buffer protection member on the buffer protection member, and the force-applying pushing member outputs work outwardly following the movement on the buffer protection member.

[0013] Preferably, the buffer protection member includes a nut transmission member and an axial buffer member. The nut transmission member is axially reciprocated and pushed on the pushing transmission member, and the axial buffer member provides an axial buffer force on the nut transmission member.

[0014] Preferably, the nut transmission member includes a nut transmission sleeve which is fitted and sleeved on the pushing transmission member. The axial buffer member includes a buffer spring, a buffer piston plate, and a buffer hydraulic groove. The buffer spring is arranged in the buffer groove of the nut transmission sleeve. The buffer piston plate is slidably and sealingly installed in the buffer groove, and the bottom surface of the buffer piston plate is connected to the top surface of the buffer spring. The notch of the buffer hydraulic groove is slidably and sealingly installed in the notch of the buffer groove.

[0015] Preferably, the automatic buffer adjustment member includes an overload locking member, a hydraulic guiding member, and a hydraulic relay member. The overload locking member is arranged on the buffer protection member, the hydraulic guiding member is arranged on the overload locking member, and the hydraulic relay member is arranged on the electric cylinder power member.

[0016] Preferably, the overload locking member includes a locking guiding member and a locking switch member. The locking guiding member is arranged on the buffer protection member, and the locking switch member is arranged on the locking guiding member.

[0017] Preferably, the hydraulic guiding member includes a hydraulic guiding pipe and a hydraulic male connector. Both the hydraulic guiding pipe and the hydraulic male connector are arranged on the nut transmission sleeve, and the hydraulic male connector is communicated with the high-pressure closed cavity formed by the buffer piston plate, the buffer hydraulic groove, and the buffer groove through the hydraulic guiding pipe.

[0018] Preferably, the hydraulic relay includes a hydraulic female joint and a hydraulic male joint. Both the hydraulic female joint and the hydraulic male joint are arranged on the cylinder support seat, and the hydraulic female joint corresponds to the hydraulic male joint. At the same time, the hydraulic female joint and the hydraulic male joint are in through connection.

[0019] The present invention has at least the following beneficial effects:

[0020] 1) The servo cylinder with a buffer protection function of the present invention has a high degree of automation, high telescopic precision, good buffer protection effect, low failure rate, long service life, and can automatically adjust the overload value according to different usage conditions, with a wide range of applications.

[0021] 2) The servo cylinder with a buffer protection function of the present invention is provided with a nut drive sleeve, an axial buffer, and an automatic buffer adjustment member. When the nut drive sleeve is axially pushed on the push rod, the axial buffer and the automatic buffer adjustment member cooperate to buffer the push load, so as to prevent the load from directly acting on the fully rigid transmission system, reduce system failures, and improve the service life; the cooperation between the automatic buffer adjustment member and the axial buffer can automatically adjust the overload value to adapt to different usage conditions and expand the scope of application.

[0022] Other advantages, objectives, and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the front view of the servo cylinder with a buffer protection function of the present invention;

[0024] Figure 2 is the top view of the servo cylinder with a buffer protection function of the present invention;

[0025] Figure 3 is the servo cylinder with a buffer protection function of the present invention Figure 2 front view of the sectional view in the A-A direction;

[0026] Figure 4 is the servo cylinder with a buffer protection function of the present invention Figure 3 partial enlarged view of B;

[0027] Figure 5 is the servo cylinder with a buffer protection function of the present invention Figure 4 partial enlarged view of C;

[0028] Figure 6 is the servo cylinder with a buffer protection function of the present invention Figure 2 three-dimensional structure schematic diagram of the sectional view in the A-A direction;

[0029] Figure 7 Servo cylinder with buffer protection function of the present invention Figure 6 Partial enlarged view of D in the figure

[0030] Wherein: 1 - cylinder support, 2 - reducer, 3 - servo motor, 4 - driving wheel, 5 - driven wheel, 6 - transmission belt, 7 - pushing transmission rod, 8 - first bearing, 9 - second bearing, 10 - cylinder block, 11 - nut transmission sleeve, 12 - buffer spring, 13 - buffer piston plate, 14 - buffer hydraulic groove, 15 - second guiding slider, 16 - locking guiding mother pipe, 17 - locking guiding male pipe, 18 - transmission rod, 19 - locking tongue, 20 - hydraulic male joint, 21 - first hydraulic guiding hose, 22 - second hydraulic guiding hose, 23 - hydraulic female joint, 24 - hydraulic external joint, 25 - first relay hole, 26 - second relay hole, 27 - pushing pipe, 28 - pressing head Specific implementation mode

[0031] Hereinafter, the technical solution of the present invention will be described in detail by way of examples with reference to the accompanying drawings. It should be noted here that the description of these example embodiments is for helping to understand the present invention, but does not constitute a limitation to the present invention

[0032] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article is a description of another association object relationship, indicating that there can be two relationships. For example, A / and B can represent: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally represents that the front and rear associated objects are an "or" relationship

[0033] According to Figures 1-7 As shown, a servo cylinder with buffer protection function includes a cylinder power member, a cylinder pushing member, and a pushing buffer protection member. The cylinder pushing member is arranged on the cylinder power member, and the pushing buffer protection member is arranged on the cylinder pushing member. The cylinder power member includes a cylinder support 1, a deceleration power member, and a power transmission member. The deceleration power member is arranged on the cylinder support, and the power transmission member is arranged on the deceleration power member. The cylinder support is integrally in the shape of a rectangular shell. Specifically, an installation and maintenance opening is provided on the bottom surface of the cylinder support, and the installation and maintenance opening is convenient for installing and maintaining the deceleration power member and the power transmission member

[0034] The deceleration power component includes a reducer 2 and a servo motor 3. The reducer 2 is arranged on the cylinder support base, and the free end of the output shaft of the reducer 2 rotates through the cylinder support base. The servo motor 3 is fixedly arranged on the reducer 2, and the free end of the rotating shaft of the servo motor 3 is fixedly connected to the input shaft of the reducer 2.

[0035] The power transmission component includes a driving wheel 4, a driven wheel 5 and a transmission belt 6. The driving wheel 4 is fixedly sleeved on the free end of the output shaft of the reducer 2. The driven wheel 5 is fixedly sleeved on the cylinder pushing component. The transmission belt 6 is cooperatively sleeved on the driving wheel 4 and the driven wheel 5. After the torque of the servo motor 3 is increased by deceleration through the reducer 2, the power is transmitted to the cylinder pushing component through the driving wheel 4, the driven wheel 5 and the transmission belt 6. Specifically, both the driving wheel 4 and the driven wheel 5 are synchronous wheels, and the transmission belt 6 is a synchronous belt.

[0036] The cylinder pushing component includes a pushing transmission component and a pushing protection component. Both the pushing transmission component and the pushing protection component are arranged on the cylinder support base. The pushing transmission component includes a pushing transmission rod 7, a first bearing 8 and a second bearing 9. One end of the pushing transmission rod 7 penetrates into the cylinder support base, and one end of the pushing transmission rod 7 is fixedly sleeved by the driven wheel 5, so that the pushing transmission rod 7 is driven by the servo motor 3. As an option, the pushing transmission rod 7 is a lead screw. Further, one end of the pushing transmission rod 7 is rotatably installed in a rotary support groove on the bottom surface of the cylinder support base to improve the circumferential rotation stability of the pushing transmission rod 7 in the cylinder support base. The first bearing 8 is sleeved on the pushing transmission rod 7, and the first bearing 8 is installed in a bearing groove on the top surface of the cylinder support base, so that the pushing transmission rod 7 is axially supported at two points by the first bearing 8 and the rotary support groove, further improving the circumferential rotation stability of the pushing transmission rod 7 on the cylinder support base. The second bearing 9 is fixedly sleeved on the other end of the pushing transmission rod 7, and the second bearing 9 is slidably installed in the pushing buffer protection component to further improve the circumferential rotation stability of the pushing transmission rod 7 to meet the requirement of ultra-long pushing.

[0037] The pushing protection component includes a cylinder body 10. The cylinder body 10 is tubular. The inner diameter of the cylinder body 10 is larger than the outer diameter of the pushing transmission rod 7. One end of the cylinder body 10 is fixedly arranged on the cylinder support base, and the cylinder body 10 is sleeved outside the pushing transmission rod 7 to provide protection for the pushing buffer protection component.

[0038] The push buffer protection member includes a buffer protection member, an automatic buffer adjustment member, and a force application push member. The buffer protection member is disposed on the push transmission member, and both the automatic buffer adjustment member and the force application push member are disposed on the buffer protection member. The buffer protection member includes a nut transmission member and an axial buffer member. The nut transmission member is disposed on the push transmission member, and the axial buffer member is disposed on the nut transmission member. The nut transmission member includes a nut transmission sleeve 11. The nut transmission sleeve 11 is in the shape of a thick-walled tube. The nut transmission sleeve 11 is fitted over the push transmission rod 7 in a mating manner, and the internal thread on the inner wall of the nut transmission sleeve 11 mates with the external thread on the push transmission rod 7. One end of the thick wall of the nut transmission sleeve 11 is provided with a buffer groove. The buffer groove is in the shape of an annular groove. The depth of the buffer groove is less than the length of the nut transmission sleeve 11. The axis of the buffer groove coincides with the axis of the nut transmission sleeve 11. The buffer groove is used for installing the axial buffer member.

[0039] Further, a first guiding sliding groove is provided on the outer wall of the nut transmission sleeve 11. The longitudinal line of the first guiding sliding groove is parallel to the axis of the nut transmission sleeve 11. The first guiding sliding groove is slidably fitted over a first guiding sliding block on the inner wall of the cylinder block 10. The longitudinal direction of the first guiding sliding block is parallel to the axis of the cylinder block 10. This enables the nut transmission sleeve 11 to axially slide and circumferentially lock within the cylinder block 10.

[0040] The axial buffer member includes a buffer spring 12, a buffer piston plate 13, and a buffer hydraulic groove 14. The natural length of the buffer spring 12 is less than the depth of the buffer groove. One end of the buffer spring 12 is vertically connected to the bottom surface of the buffer groove. A plurality of the buffer springs 12 are evenly distributed circumferentially around the buffer groove. The buffer piston plate 13 is in the shape of an annular plate. The width of the buffer piston plate 13 is not greater than the width of the buffer groove. The buffer piston plate 13 is slidably fitted into the buffer groove. The axis of the buffer piston plate 13 coincides with the axis of the buffer groove. And the bottom surface of the buffer piston plate 13 is connected to the other ends of the plurality of buffer springs 12. Further, a first sealing ring is fixedly fitted over the outer circumferential surface of the buffer piston plate 13, and a second sealing ring is fixedly embedded in the inner circumferential surface of the buffer piston plate 13. This enables the buffer piston plate 13 to be slidably sealed with the two side groove walls of the buffer groove through the first sealing ring and the second sealing ring, and further enables the buffer piston plate 13 to axially slide and seal within the buffer groove.

[0041] The buffer hydraulic groove 14 is in the shape of an annular groove, and the notch of the buffer hydraulic groove 14 is slidably and fittingly installed in the notch of the buffer groove. Further, a third sealing ring is fixedly sleeved on the outer wall of the notch of the buffer hydraulic groove 14, and a fourth sealing ring is fixedly embedded on the inner wall of the notch of the buffer hydraulic groove 14, so that the buffer hydraulic groove 14 is slidably sealed with the two side walls of the buffer groove through the third sealing ring and the fourth sealing ring. The buffer hydraulic groove 14 can slide back and forth axially and sealingly in the buffer groove.

[0042] Further, a second guiding sliding groove is arranged on the outer wall of the buffer hydraulic groove 14. The length of the second guiding sliding groove is less than the length of the buffer hydraulic groove 14, and the longitudinal direction of the second guiding sliding groove is parallel to the axis of the buffer hydraulic groove 14. At the same time, one end of the second guiding sliding groove is non-through with one end face of the buffer hydraulic groove 14. The second guiding sliding groove is slidably sleeved on the second guiding sliding block 15 on the outer side wall of one end of the buffer groove. When the buffer hydraulic groove 14 slides axially in the buffer groove, the second guiding sliding groove plays an axial limiting role to prevent the buffer hydraulic groove 14 from detaching from the buffer groove. As an option, four second guiding sliding grooves are arranged, and the four second guiding sliding grooves are evenly distributed around the circumference of the buffer hydraulic groove 14 to improve stability.

[0043] It should be noted that the inner wall of the buffer hydraulic groove 14, the inner wall of the buffer groove and the top surface of the buffer piston plate 13 form a closed oil pressure chamber. When the oil pressure in the oil pressure chamber increases, the buffer piston plate 13 will be pushed downward to compress the buffer spring 12, increasing the overload buffer value of the servo electric cylinder with buffer protection function, so that the servo electric cylinder with buffer protection function can meet the high-precision pushing requirement within the non-overload range and also play a buffer protection role during overload.

[0044] The automatic buffer adjusting member includes an overload locking member, a hydraulic guiding member, and a hydraulic relay member. The overload locking member is disposed on the buffer protection member, the hydraulic guiding member is disposed on the overload locking member, and the hydraulic relay member is disposed on the electric cylinder power member. The overload locking member includes a locking guiding member and a locking switch member. The locking guiding member is disposed on the buffer protection member, and the locking switch member is disposed on the locking guiding member. The locking guiding member includes a locking guiding female pipe 16 and a locking guiding male pipe 17. The length of the locking guiding female pipe 16 is not less than half of the natural length of the buffer spring 12. One end of the locking guiding female pipe 16 is fixedly disposed at the bottom of the buffer groove, and the locking wire female pipe is located inside the buffer spring 12. One end of the locking guiding male pipe 17 is slidably fitted inside the other end of the locking guiding female pipe 16, and the other end of the locking guiding male pipe 17 is fixedly disposed on the bottom surface of the buffer piston plate 13. The axis of the locking guiding male pipe 17 coincides with the axis of the locking guiding female pipe 16. When the locking guiding member cooperates with the locking switch member, it can not only compress the buffer spring 12, adjust the overload buffer value, but also guide the buffer spring 12 and the buffer piston plate 13, improving the stability during their axial compression and axial sliding processes.

[0045] The locking switch member includes a first magnetic coil, a transmission rod 18, and a locking tongue 19. The first magnetic coil is fixedly fitted in a first spiral groove on the inner wall of the locking guiding male pipe 17. The transmission rod 18 is slidably fitted inside the locking guiding male pipe 17, and the transmission rod 18 is located inside the first magnetic coil. When the first magnetic coil is energized with direct current to generate a magnetic field, it will push the transmission rod 18 to slide back and forth inside the locking guiding male pipe 17. Further, one end of the transmission rod 18 is in the shape of a frustum of a cone to push the locking tongue 19 to lock on the locking guiding female pipe 16. As an option, both the transmission rod 18 and the locking tongue 19 are magnetic. The length of the locking tongue 19 is greater than the wall thickness of the locking guiding male pipe 17. One end of the locking tongue 19 slidably passes through a locking through hole on the side wall of the other end of the locking guiding male pipe 17, and one end of the locking tongue 19 is provided with an inclined surface. At the same time, one end of the locking tongue 19 corresponds to a locking groove on the inner wall of the locking guiding female pipe 16. The inclined surface facilitates the locking tongue 19 to slide down from one locking groove into another locking groove. There are ten locking grooves, and the ten locking grooves are evenly distributed along the axis. The other end of the locking tongue 19 has a magnetic polarity opposite to that of one end of the transmission rod 18, so that the other end of the locking tongue 19 can be adsorbed on the conical side surface of one end of the transmission rod 18. Further, a conical concave surface is provided at the other end of the locking tongue 19 to increase the adsorption area between the locking tongue 19 and the conical side surface of one end of the transmission rod 18. There are two locking tongues 19, and the two locking tongues 19 are evenly distributed around the circumference of the locking guiding male pipe 17.

[0046] It should be noted that after one end of the lock tongue 19 is inserted into the locking groove at the predetermined position by the first magnetic coil through the transmission rod 18, the first magnetic coil stops passing current.

[0047] When it is necessary to increase the overload value of the servo electric cylinder with buffer protection function, the oil pressure in the oil pressure chamber is increased to push the buffer piston plate 13 downward. The buffer piston plate 13 drives the locking guide male pipe 17 to move downward, and the locking guide male pipe 17 drives the lock tongue 19 to move downward. The downward-moving lock tongue 19 retracts into the locking guide male pipe 17 due to the extrusion between the inclined surface and the locking groove. When one end of the lock tongue 19 is aligned with the next locking groove, direct current is passed into the first magnetic coil, and one end of the lock tongue 19 is pressed into the next locking groove through the transmission rod 18.

[0048] When it is necessary to reduce the overload value of the servo electric cylinder with buffer protection function, first, the oil pressure in the oil pressure chamber is increased to push the buffer piston plate 13 downward. The buffer piston plate 13 drives the locking guide male pipe 17 to move downward, and the locking guide male pipe 17 drives the lock tongue 19 to move downward. The downward-moving lock tongue 19 retracts into the locking guide male pipe 17 due to the extrusion between the inclined surface and the locking groove. Then, the oil pressure in the oil pressure chamber is reduced to make the buffer piston plate 13 drive the locking guide male pipe 17 to rise, and the locking guide male pipe 17 drives the lock tongue 19 to rise, so that one end of the lock tongue 19 is aligned with the locking groove at the predetermined position. Then, direct current is passed into the first magnetic coil, and one end of the lock tongue 19 is pressed into the locking groove at the predetermined position through the transmission rod 18.

[0049] Four sets of overload locking members are provided, and the four sets of overload locking members correspond to the four buffer springs 12 one by one.

[0050] The hydraulic guide includes a hydraulic guide tube and a hydraulic male connector 20, both of which are provided on the nut drive sleeve 11. The hydraulic guide tube includes a first hydraulic guide hose 21 and a second hydraulic guide hose 22. One end of the first hydraulic guide hose 21 is connected through to one end of a first liquid guide through hole on the bottom of the buffer groove, and the other end of the first hydraulic guide hose 21 is connected through to one end of a second liquid guide through hole on the drive rod 18. One end of the second hydraulic guide hose 22 is connected through to the other end of the second liquid guide through hole, and the other end of the second hydraulic guide hose 22 is connected through to one end of a third liquid guide through hole on the buffer piston plate 13. The other end of the third liquid guide through hole communicates with the oil pressure chamber. A one-way flow valve is provided inside the hydraulic male connector 20, and the bottom end of the hydraulic male connector 20 is connected through to the other end of the first liquid guide through hole. This enables hydraulic oil to pressurize the oil pressure chamber from the hydraulic male connector 20. When it is necessary to relieve the pressure of the oil pressure chamber, it can be achieved by cooperating with the hydraulic female connector 23.

[0051] Four sets of the hydraulic guides are provided, and the four sets of the hydraulic guides correspond to the four sets of overload locking members one by one.

[0052] The hydraulic relay includes a hydraulic female connector 23 and a hydraulic outer connector 24. The bottom end of the hydraulic female connector 23 is connected through to one end of a first relay hole 25 on the electric cylinder support base 1, and the axis of the hydraulic female connector 23 coincides with the axis of the hydraulic male connector 20, enabling the hydraulic male connector 20 to be hermetically inserted into the top end of the hydraulic female connector 23 in a matching manner. Four hydraulic female connectors 23 are provided, and the four hydraulic female connectors 23 correspond to the four hydraulic male connectors 20 one by one. The bottom end of the hydraulic outer connector 24 is connected through to one end of a second relay hole 26 on the electric cylinder support base, and the other end of the second relay hole 26 communicates with the other ends of the four first relay holes 25 respectively. The hydraulic outer connector 24 is connected through to a hydraulic oil pump by a high-pressure hose.

[0053] As an option, a second magnetic coil is fixedly embedded in a second spiral groove on the inner wall of the hydraulic female connector 23. A push shaft is slidably embedded in the hydraulic female connector 23. When direct current is passed through the second magnetic coil to generate a magnetic field, it will drive the push shaft to slide axially in the hydraulic female connector 23, thereby pushing the one-way flow valve to open to relieve the pressure of the oil pressure chamber. Further, a diversion groove is provided on the side wall of the push shaft. After the hydraulic female connector 23 and the hydraulic male connector 20 are connected in a matching manner, the reverse flow groove can always communicate the first liquid guide through hole and the first relay hole 25.

[0054] The force-applying pushing member includes a pushing tube 27 and a pressing head 28. One end of the pushing tube 27 is fixedly arranged on the outer side surface of the bottom of the buffer hydraulic groove 14, and the pushing tube 27 is slidably sleeved outside the second bearing 9. At the same time, the pushing tube 27 is fitted and slidably installed at the other end of the cylinder block 10. Further, the slider on the inner wall of the pushing tube 27 cooperates with the chute on the outer side wall of the second bearing 9. While further improving the circumferential rotation stability of the pushing transmission rod 7, the requirement for the axial sliding and extending of the pushing tube 27 relative to the pushing transmission rod 7 is satisfied. The pressing head 28 is embedded at the other end of the pushing tube 27, which is convenient for the pushing operation.

[0055] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated and described examples here.

Claims

1. A servo electric cylinder with buffer protection function, characterized in that: include: An electric cylinder power piece, which is installed at a predetermined position to provide rotational torque; An electric cylinder push piece, which is on the electric cylinder power piece and transmits the torque of the electric cylinder power piece backward; A push-buffer protection member is on the electric cylinder push-buffer member to receive the torque transmitted by the electric cylinder push-buffer member, and the push-buffer protection member cooperates with the electric cylinder push-buffer member to convert the rotational motion of the electric cylinder power member into linear motion to output work outward; The electric cylinder power member comprises an electric cylinder support seat, a deceleration power member and a power transmission member, wherein the deceleration power member provides a rotational torque on the electric cylinder support seat, and the power transmission member transmits the rotational torque provided by the deceleration power member to the electric cylinder push member on the deceleration power member; The electric cylinder push member includes a push transmission member and a push protection member, the push transmission member is driven by the torque transmitted by the power transmission member to perform rotational motion on the electric cylinder support seat, and the push protection member is on the electric cylinder support seat to provide protection for the push transmission member and the push buffer protection member; The push-up buffer protection member comprises a buffer protection member, an automatic buffer adjustment member and a force-applying push member, the buffer protection member is pushed back and forth in the axial direction on the push-up transmission member, and the buffer protection member provides an axial buffer force, the automatic buffer adjustment member automatically adjusts the overload buffer value of the buffer protection member on the buffer protection member, and the force-applying push member outputs work outwardly on the buffer protection member; The buffer protection member comprises a nut transmission member and an axial buffer member, wherein the nut transmission member is arranged on the push transmission member and is pushed back and forth in the axial direction, and the axial buffer member provides an axial buffer force on the nut transmission member; The nut transmission member includes a nut transmission sleeve, and the nut transmission sleeve is fitted on the push transmission member. The axial buffer member includes a buffer spring, a buffer piston plate and a buffer hydraulic groove. The buffer spring is arranged in the buffer groove of the nut transmission sleeve, and the buffer piston plate is slidingly sealed and embedded in the buffer groove. The bottom surface of the buffer piston plate is connected to the top surface of the buffer spring, and the notch of the buffer hydraulic groove is slidingly sealed and embedded in the notch of the buffer groove. The automatic buffer adjustment member includes an overload locking member, a hydraulic guide member and a hydraulic relay member, wherein the overload locking member is arranged on the buffer protection member, the hydraulic guide member is arranged on the overload locking member, and the hydraulic relay member is arranged on the electric cylinder power member; The overload locking member comprises a locking guide member and a locking switch member, wherein the locking guide member is arranged on the buffer protection member, and the locking switch member is arranged on the locking guide member.

2. The servo electric cylinder with buffer protection function according to claim 1, characterized in that: The hydraulic guide member includes a hydraulic guide tube and a hydraulic male connector, both of which are arranged on the nut transmission sleeve, and the hydraulic male connector is connected with the buffer piston plate, the buffer hydraulic groove and the high-pressure closed chamber formed by the buffer groove through the hydraulic guide tube.

3. The servo electric cylinder with buffer protection function according to claim 2 is characterized in that: The hydraulic relay comprises a hydraulic female joint and a hydraulic external joint, both of which are arranged on the electric cylinder support seat, and the hydraulic female joint corresponds to the hydraulic male joint, and the hydraulic female joint and the hydraulic external joint are connected.

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