A cushioning push rod

Abstract

The present invention provides a buffer push rod. Firstly, a three-phase AC motor is turned on to drive a guide push rod to push the gate of a nuclear power plant forward. Then, the gate of the nuclear power plant is fixedly connected with a guide ring of a connector so that the guide push rod can push and pull the gate of the nuclear power plant. The guide ring of a locking sleeve is driven to slide on the surface of the locking sleeve through the guide ring of the connector. Meanwhile, a housing of a buffer head is made to slide on the surface of the guide push rod, thereby generating a compressive force on a disc spring, causing the disc spring to rebound after shrinking, thereby driving the guide ring of the connector to move. The problem of the electric push rod maintaining pressure in controlling the gate of the nuclear power plant and correcting errors caused by installation and limiting is solved, thereby adjusting the pushing error of the gate of the nuclear power plant. Meanwhile, its rebound force can also drive the guide ring of the connector to close the gate of the nuclear power plant tightly, which is convenient for practical use.

Description

Technical Field

[0001] The present invention relates to the technical field of electric push rods, and in particular to a buffer push rod. Background Art

[0002] The electric push rod is a new type of linear drive that has developed rapidly in recent years. It integrates a rotating motor, a reducer, a screw, a nut, a push rod and other mechanisms. The screw is made through the output end of the motor output shaft, and the gear meshing with the screw is set on the long screw. The long screw is covered with a nut that is stopped from rotating. In this way, the high-speed rotation of the motor is converted into a relatively low-speed linear movement of the nut. Because of its small size, high precision, fast speed, self-locking, simple control, environmentally friendly use, and low maintenance cost, it has been widely used in the field of land intelligent equipment. It can not only make up for the shortcomings of hydraulic cylinders, but also open up the market for electric push rods and bring greater economic benefits.

[0003] At present, the Chinese invention with the publication number of CN110380571A discloses an electric push rod, including a driving mechanism, a gear box, a telescopic mechanism and a control module; the driving mechanism is fixedly mounted on the gear box; the gear box includes a housing, a gear set, and an elastic coupling; the housing accommodates the gear set and the elastic coupling; the gear set is connected to the main shaft of the driving mechanism; the elastic coupling includes an output shaft, a first gear, a steel ball fixing seat, a steel ball, a spring, and a retaining ring; the telescopic mechanism is mounted on the gear box and connected to the gear box through an elastic coupling; it is used to realize the linear motion of the electric push rod; the control module is used to intelligently and flexibly control the electric push rod. The electric push rod of the present invention is safe and reliable to use, easy to operate and maintain, and the electric push rod with intelligent control solves the problems of instability of pneumatic push rods and oil leakage of hydraulic push rods.

[0004] In the field of nuclear power industry, since the gates of nuclear power plants are usually relatively load-bearing, and in order to seal and prevent the leakage of special gases, a thicker sealing strip is connected to the door gap of the nuclear power plant gate. Conventional manpower shows that the nuclear power plant gate cannot be normally opened and closed. The current existing methods generally control the opening and closing of the nuclear power plant gate by pushing an electric push rod or a hydraulic cylinder. However, the current electric push rod or hydraulic cylinder has certain defects. First, the position accuracy is difficult to control. It is impossible to completely close the nuclear power plant gate due to the sealing strip on the door gap. It is also inconvenient to adjust the load-bearing of the gate. Secondly, it is impossible to maintain a continuous thrust so that the door is always tightly pressed on the door frame (that is, a continuous thrust is provided within a certain expected error range to compact the door, which is similar to the principle of a hydraulic cylinder. The pressure is always maintained within a certain numerical range. The pressed object moves forward, the cylinder retracts with constant force, the pressed object falls back, and the cylinder moves forward with constant force, which is also similar to the servo constant tension system in the textile industry.

[0005] Therefore, in order to solve the common problem in the art of maintaining the pressure of the transmission electric push rod in controlling the gate of a nuclear power plant and correcting the errors caused by installation and limiting, the present invention is made. Summary of the invention

[0006] The purpose of the present invention is to provide a buffer push rod in view of the shortcomings of the current electric push rod.

[0007] In order to overcome the shortcomings of the prior art, the present invention adopts the following technical solutions:

[0008] A buffer push rod comprises a three-phase AC motor, the output end of the three-phase AC motor is fixedly connected to a right-angle planetary reducer, the end of the right-angle planetary reducer away from the three-phase AC motor is fixedly connected to a driving gear shaft, a protective shell is provided on one side of the three-phase AC motor, a ball screw is rotatably connected inside the protective shell, a ball screw sleeve is fixedly sleeved on the surface of the ball screw close to one end of the protective shell, a passive meshing gear meshing with the driving gear shaft is fixedly sleeved on the surface of the ball screw sleeve, a push rod protective sleeve is provided on one side of the protective shell, a push rod mounting plate is bolted between the protective shell and the push rod protective sleeve, and a push rod mounting plate is bolted between the protective shell and the push rod protective sleeve. One side of the mounting plate is fixedly connected to a limit guide sleeve rotatably connected to the ball screw, and a guide push rod is slidably connected inside the push rod protective sleeve, and the end of the guide push rod close to the protective shell is clamped with a push rod guide sleeve threadedly connected to the ball screw, and the end of the guide push rod away from the push rod guide sleeve is fixedly connected to a connecting head guide ring, and the surface of the connecting head guide ring is fixedly sleeved with a locking sleeve threadedly sleeved with the guide push rod, and the surface of the locking sleeve is fixedly sleeved with a locking sleeve guide ring, and the end of the locking sleeve guide ring close to the guide push rod is fixedly sleeved with a buffer head shell, and the surface of the connecting head guide ring is provided with a disc spring fixedly connected to the locking sleeve guide ring and the locking sleeve respectively.

[0009] Optionally, surfaces of the three-phase AC motor and the right-angle planetary reducer close to one end of each other are fixedly connected with connecting flanges bolted to each other.

[0010] Optionally, a connecting protective sleeve is provided at one end of the right-angle planetary reducer close to the protective shell, and both ends of the connecting protective sleeve are threadedly connected with hexagonal screws that are threadedly connected to the right-angle planetary reducer and the protective shell respectively.

[0011] Optionally, a straight-through pressure-injection oil cup is fixedly mounted on the top of the protective shell, and a push rod mounting head is bolted to one end of the protective shell away from the push rod protective sleeve.

[0012] Optionally, a buffer connector is welded to one end of the connector guide ring away from the push rod protective sleeve, and a rubber sealing ring is fixedly connected to the inside of the buffer connector.

[0013] Optionally, guide grooves are fixedly connected to both sides of the push rod protective sleeve, and a magnetic induction switch used in conjunction with the push rod guide sleeve is slidably connected to the inside of the guide groove.

[0014] Optionally, an anti-reversal block pressure plate slidably connected to the push rod protective sleeve is fixedly installed on one side of the push rod guide sleeve, and a push rod pressure plate used in conjunction with the push rod guide sleeve is slidably connected to the surface of the guide push rod.

[0015] Optionally, both ends of the push rod protective sleeve are bonded with solid round strips of silicone bonded to the push rod mounting plate.

[0016] Optionally, a waterproof breathable valve is fixedly installed on one end of the push rod protective sleeve surface away from the protective shell, and a guide sleeve is fixedly sleeved on the surface of the ball screw rod near one end of the guide push rod and is slidably connected to the guide push rod.

[0017] Optionally, the interior of the limiting guide sleeve and the end of the passive meshing gear away from the limiting guide sleeve are both fixedly connected to a connecting bearing seat which is respectively fixedly connected to the ball screw sleeve and the protective shell.

[0018] The beneficial effects achieved by the present invention are:

[0019] First, the three-phase AC motor is turned on to drive the guide push rod to push the nuclear power plant door forward, and then the nuclear power plant door and the connector guide ring are fixedly connected together, so that the guide push rod can push and pull the nuclear power plant door, and the locking sleeve guide ring is driven by the connector guide ring to slide on the surface of the locking sleeve, and the buffer head shell is made to slide on the surface of the guide push rod, thereby generating a compressive force on the disc spring, causing the disc spring to shrink and then rebound, driving the connector guide ring to move, solving the problem of the electric push rod maintaining the pressure of the nuclear power plant door and correcting errors caused by installation and limiting, so that the pushing error of the nuclear power plant door can be adjusted, and at the same time, its rebound force can also drive the connector guide ring to close the nuclear power plant door tightly, which is convenient for practical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a partial structural cross-sectional view of the present invention;

[0023] Figure 3 It is a side structural sectional view of the present invention;

[0024] Figure 4 For the present invention Figure 2 A in the enlarged view;

[0025] Figure 5 For the present invention Figure 2 Enlarged view of point B in .

[0026] Explanation of the accompanying figures: 1-three-phase AC motor; 2-right-angle planetary reducer; 3-driving gear shaft; 4-disc spring; 5-protective housing; 6-passive meshing gear; 7-ball screw sleeve; 8-ball screw; 9-push rod protective sleeve; 10-push rod mounting plate; 11-limit guide sleeve; 12-buffer head housing; 13-guide push rod; 14-push rod guide sleeve; 15-connector guide ring; 16-locking sleeve; 17-locking sleeve guide ring; 18-connecting flange; 19-connecting protective sleeve; 20-hexagonal screw; 21-push rod mounting head; 22-straight-through pressure injection oil cup; 23-waterproof breathable valve; 24-buffer connector; 25-rubber sealing ring; 26-magnetic induction switch; 27-guide groove; 28-anti-reversal block pressure plate; 29-push rod pressure plate; 30-silicone solid round bar; 31-guide sleeve; 32-connecting bearing seat. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail in conjunction with its embodiments below; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. For those skilled in the art, other systems, methods and / or features of this embodiment will become apparent after reviewing the following detailed description. It is intended that all such additional systems, methods, features and advantages are included in this specification, included within the scope of the present invention, and protected by the appended claims. Additional features of the disclosed embodiments are described in the following detailed description, and these features will be apparent from the following detailed description.

[0028] Embodiment 1: A buffer push rod comprises a three-phase AC motor 1, the output end of the three-phase AC motor 1 is fixedly connected to a right-angle planetary reducer 2, the end of the right-angle planetary reducer 2 away from the three-phase AC motor 1 is fixedly connected to a driving gear shaft 3, a protective shell 5 is provided on one side of the three-phase AC motor 1, a ball screw 8 is rotatably connected inside the protective shell 5, a ball screw sleeve 7 is fixedly sleeved on the surface of the ball screw 8 close to one end of the protective shell 5, a passive meshing gear 6 meshing with the driving gear shaft 3 is fixedly sleeved on the surface of the ball screw sleeve 7, a push rod protective sleeve 9 is provided on one side of the protective shell 5, a push rod mounting plate 10 is bolted between the protective shell 5 and the push rod protective sleeve 9, and a side of the protective shell 5 close to the push rod mounting plate 10 is fixed A limiting guide sleeve 11 is connected to the ball screw 8 for rotation, a guide push rod 13 is slidably connected inside the push rod protective sleeve 9, the end of the guide push rod 13 close to the protective shell 5 is clamped with a push rod guide sleeve 14 threadedly connected to the ball screw 8, the end of the guide push rod 13 away from the push rod guide sleeve 14 is fixedly connected to a connector guide ring 15, the surface of the connector guide ring 15 is fixedly sleeved with a locking sleeve 16 threadedly sleeved with the guide push rod 13, the surface of the locking sleeve 16 is fixedly sleeved with a locking sleeve guide ring 17, the end of the locking sleeve guide ring 17 close to the guide push rod 13 is fixedly sleeved with a buffer head shell 12, and the surface of the connector guide ring 15 is sleeved with a disc spring 4 fixedly connected to the locking sleeve guide ring 17 and the locking sleeve 16 respectively.

[0029] The surfaces of the three-phase AC motor 1 and the right-angle planetary reducer 2 close to each other are fixedly connected with connecting flanges 18 bolted to each other. A connecting protective sleeve 19 is provided at the end of the right-angle planetary reducer 2 close to the protective housing 5, and both ends of the connecting protective sleeve 19 are threadedly connected with hexagonal screws 20 threadedly connected to the right-angle planetary reducer 2 and the protective housing 5 respectively. A straight-through pressure injection oil cup 22 is fixedly installed on the top of the protective housing 5, and a push rod mounting head 21 is bolted to the end of the protective housing 5 away from the push rod protective sleeve 9. A buffer connector 24 is welded to the end of the connector guide ring 15 away from the push rod protective sleeve 9, and a rubber sealing ring 25 is fixedly connected to the inside of the buffer connector 24. Guide grooves 27 are fixedly connected to both sides of the inside of the push rod protective sleeve 9, and a magnetic induction switch 26 used in conjunction with the push rod guide sleeve 14 is slidably connected to the inside of the guide groove 27. An anti-reversal block pressure plate 28 slidably connected to the push rod protective sleeve 9 is fixedly installed on one side of the push rod guide sleeve 14, and a push rod pressure plate 29 used in conjunction with the push rod guide sleeve 14 is slidably connected to the surface of the guide push rod 13. Both ends of the push rod protective sleeve 9 are bonded with a solid round silicone bar 30 bonded to the push rod mounting plate 10. A waterproof breathable valve 23 is fixedly installed on the end of the push rod protective sleeve 9 away from the protective shell 5, and a guide sleeve 31 slidably connected to the guide push rod 13 is fixedly sleeved on the surface of the ball screw 8 near the end of the guide push rod 13. The inside of the limit guide sleeve 11 and the end of the passive meshing gear 6 away from the limit guide sleeve 11 are fixedly connected with a connecting bearing seat 32 fixedly connected to the ball screw sleeve 7 and the protective shell 5 respectively.

[0030] Embodiment 2: This embodiment should be understood as including at least all the features of any one of the aforementioned embodiments, and further improved thereon. Specifically, a buffer push rod is provided, including a three-phase AC motor 1, the output end of the three-phase AC motor 1 is fixedly connected to a right-angle planetary reducer 2, the end of the right-angle planetary reducer 2 away from the three-phase AC motor 1 is fixedly connected to a driving gear shaft 3, a protective shell 5 is provided on one side of the three-phase AC motor 1, a ball screw 8 is rotatably connected inside the protective shell 5, a ball screw sleeve 7 is fixedly sleeved on the surface of the ball screw 8 close to one end of the protective shell 5, a passive meshing gear 6 meshing with the driving gear shaft 3 is fixedly sleeved on the surface of the ball screw sleeve 7, a push rod protective sleeve 9 is provided on one side of the protective shell 5, and a push rod mounting plate 1 is bolted between the protective shell 5 and the push rod protective sleeve 9. 0, a limiting guide sleeve 11 rotatably connected to the ball screw 8 is fixedly connected to one side of the protective shell 5 near the push rod mounting plate 10, a guide push rod 13 is slidably connected to the push rod protective sleeve 9, an end of the guide push rod 13 near the protective shell 5 is clamped with a push rod guide sleeve 14 threadedly connected to the ball screw 8, an end of the guide push rod 13 away from the push rod guide sleeve 14 is fixedly connected to a connector guide ring 15, a locking sleeve 16 threadedly connected to the guide push rod 13 is fixedly sleeved on the surface of the connector guide ring 15, a locking sleeve 16 is fixedly sleeved on the surface of the locking sleeve 16, a locking sleeve guide ring 17 is fixedly sleeved on the surface of the locking sleeve 16, an end of the locking sleeve guide ring 17 near the guide push rod 13 is fixedly sleeved with a buffer head shell 12, and a disc spring 4 fixedly connected to the locking sleeve guide ring 17 and the locking sleeve 16 is respectively provided on the surface of the connector guide ring 15.Specifically, firstly, the three-phase AC motor 1 is turned on to drive the guide push rod 13 to push the nuclear power plant door forward, and then the nuclear power plant door is fixedly connected to the connector guide ring 15, so that the guide push rod 13 can push and pull the nuclear power plant door, and the connector guide ring 15 drives the locking sleeve guide ring 17 to slide on the surface of the locking sleeve 16, and at the same time, the buffer head shell 12 slides on the surface of the guide push rod 13, thereby generating a compressive force on the disc spring 4, causing the disc spring 4 to shrink and then rebound, driving the connector guide ring 15 to move, solving the problem of the electric push rod maintaining the pressure of the nuclear power plant door and correcting the errors caused by installation and limit, so that the pushing error of the nuclear power plant door can be adjusted, and at the same time, its rebound force can also drive the connector guide ring 15 to close the nuclear power plant door tightly, which is convenient for actual use. In this embodiment, by setting the magnetic induction switch 26 to slide inside the guide groove 27, the pushing position of the buffer push rod can be accurately controlled. In this embodiment, by setting the anti-reversal block pressure plate 28 and the push rod pressure plate 29, the sliding of the push rod guide sleeve 14 can be limited, thereby limiting the pushing distance of the guide push rod 13. In this embodiment, by setting the waterproof breathable valve 23, the air inside the push rod protective sleeve 9 can be easily discharged, and at the same time, moisture can be prevented from entering. By setting the guide sleeve 31, the sliding of the guide push rod 13 on the surface of the ball screw 8 can be controlled and limited, thereby improving the accuracy of the axial movement of the guide push rod 13. In this embodiment, the connecting protective sleeve 19 is installed between the right-angle planetary reducer 2 and the protective housing 5 by using the hexagonal screw 20, so that the driving gear shaft 3 can be protected and the service life can be improved.

[0031] The surfaces of the three-phase AC motor 1 and the right-angle planetary reducer 2 close to each other are fixedly connected with mutually bolted connection flanges 18. Specifically, by providing the connection flange 18, the three-phase AC motor 1 and the right-angle planetary reducer 2 can be conveniently fixedly installed together, and it is also convenient to disassemble, repair and replace.

[0032] A connecting protective sleeve 19 is provided at one end of the right-angle planetary reducer 2 close to the protective housing 5, and both ends of the connecting protective sleeve 19 are threadedly connected with hexagonal screws 20 respectively threadedly connected to the right-angle planetary reducer 2 and the protective housing 5. Specifically, the connecting protective sleeve 19 is installed between the right-angle planetary reducer 2 and the protective housing 5 by using the hexagonal screws 20, so that the driving gear shaft 3 can be protected and the service life can be improved.

[0033] A straight-through pressure injection oil cup 22 is fixedly installed on the top of the protective shell 5, and a push rod mounting head 21 is bolted to one end of the protective shell 5 away from the push rod protective sleeve 9. Specifically, it is convenient to fix the other end of the buffer push rod, and at the same time, the straight-through pressure injection oil cup 22 is arranged to facilitate adding lubricating oil to the inside, thereby improving the service life.

[0034] A buffer connector 24 is welded to one end of the connector guide ring 15 away from the push rod protective sleeve 9, and a rubber sealing ring 25 is fixedly connected to the inside of the buffer connector 24. Specifically, the buffer push rod can be fixed to the gate of the nuclear power plant, and the friction force of the connection can be increased.

[0035] Both sides of the push rod protective sleeve 9 are fixedly connected with guide grooves 27, and the guide grooves 27 are slidably connected with magnetic induction switches 26 used in conjunction with the push rod guide sleeve 14. Specifically, by setting the magnetic induction switch 26 to slide inside the guide groove 27, the pushing position of the buffer push rod can be accurately controlled.

[0036] An anti-reversal block pressure plate 28 slidably connected to the push rod protective sleeve 9 is fixedly mounted on one side of the push rod guide sleeve 14, and a push rod pressure plate 29 used in conjunction with the push rod guide sleeve 14 is slidably connected to the surface of the guide push rod 13. Specifically, by providing the anti-reversal block pressure plate 28 and the push rod pressure plate 29, the sliding of the push rod guide sleeve 14 can be limited, thereby limiting the pushing distance of the guide push rod 13.

[0037] Both ends of the push rod protective sleeve 9 are bonded with a solid round silicone strip 30 bonded to the push rod mounting plate 10. Specifically, the sealing of the connection is improved to prevent water from penetrating.

[0038] A waterproof breathable valve 23 is fixedly mounted on the end of the push rod protective sleeve 9 away from the protective shell 5, and a guide sleeve 31 is fixedly sleeved on the surface of the ball screw 8 near the end of the guide push rod 13 and is slidably connected to the guide push rod 13. Specifically, the waterproof breathable valve 23 can be provided to facilitate the discharge of air inside the push rod protective sleeve 9 and prevent moisture from entering, and the guide sleeve 31 can be provided to control and limit the sliding of the guide push rod 13 on the surface of the ball screw 8, thereby improving the accuracy of the axial movement of the guide push rod 13.

[0039] The interior of the limiting guide sleeve 11 and the end of the passive meshing gear 6 away from the limiting guide sleeve 11 are fixedly connected with a connecting bearing seat 32 respectively fixedly connected to the ball screw sleeve 7 and the protective housing 5. Specifically, the friction of the passive meshing gear 6 and the limiting guide sleeve 11 rotating inside the protective housing 5 is reduced, and the service life is improved.

[0040] In summary, the present invention proposes a buffer push rod, which drives the active gear shaft 3 to rotate by turning on the three-phase AC motor 1, so that the ball screw sleeve 7 can drive the ball screw 8 to rotate inside the push rod protective sleeve 9 after the passive meshing gear 6 is meshed with the active gear shaft 3, and then the push rod guide sleeve 14 on the surface of the ball screw 8 is threadedly engaged, and the push rod guide sleeve 14 is limited by the push rod protective sleeve 9, so that the push rod guide sleeve 14 slides inside the push rod protective sleeve 9 and pushes the guide push rod 13 forward to slide out of the push rod protective sleeve 9 to generate thrust, and then by The gate of the nuclear power plant is fixedly connected to the connector guide ring 15, so that the guide push rod 13 can push and pull the gate of the nuclear power plant, and drive the locking sleeve guide ring 17 to slide on the surface of the locking sleeve 16 through the connector guide ring 15, and at the same time, the buffer head shell 12 slides on the surface of the guide push rod 13, thereby generating a compressive force on the disc spring 4, causing the disc spring 4 to shrink and then rebound, driving the connector guide ring 15 to move, thereby adjusting the pushing error of the nuclear power plant gate, and at the same time, its rebound force can also drive the connector guide ring 15 to close the nuclear power plant gate tightly.

[0041] Although the present invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the present invention. That is, the methods, systems and devices discussed above are examples. Various configurations may appropriately omit, replace or add various processes or components. For example, in alternative configurations, the method may be performed in an order different from the order described, and / or various components may be added, omitted and / or combined. Moreover, the features described with respect to certain configurations may be combined in various other configurations, such as different aspects and elements of the configurations may be combined in a similar manner. In addition, the elements therein may be updated as the technology develops, i.e., many elements are examples and do not limit the scope of the present disclosure or claims.

[0042] Specific details are given in the specification to provide a thorough understanding of the exemplary configurations including implementations. However, the configurations may be practiced without these specific details. For example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary details to avoid obscuring the configurations. This description provides only example configurations and does not limit the scope, applicability, or configurations of the claims. On the contrary, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made to the functions and arrangements of the elements without departing from the spirit or scope of the present disclosure.

[0043] In summary, it is intended that the above detailed description is considered to be illustrative rather than restrictive, and it should be understood that the above embodiments should be understood to be only used to illustrate the present invention and not to limit the scope of protection of the present invention. After reading the contents of the present invention, the technician can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope of the claims of the present invention.

Claims

1. A buffer push rod, characterized in that: The invention comprises a three-phase AC motor (1), wherein the output end of the three-phase AC motor (1) is fixedly connected to a right-angle planetary reducer (2), an end of the right-angle planetary reducer (2) away from the three-phase AC motor (1) is fixedly connected to a driving gear shaft (3), a protective housing (5) is provided on one side of the three-phase AC motor (1), a ball screw (8) is rotatably connected inside the protective housing (5), a ball screw sleeve (7) is fixedly sleeved on the surface of the ball screw (8) close to one end of the protective housing (5), and a driving gear shaft (3) is fixedly sleeved on the surface of the ball screw sleeve (7) A passive meshing gear (6) meshed with the shaft (3), a push rod protective sleeve (9) is provided on one side of the protective shell (5), a push rod mounting plate (10) is bolted between the protective shell (5) and the push rod protective sleeve (9), a limit guide sleeve (11) rotatably connected to the ball screw (8) is fixedly connected to the side of the protective shell (5) close to the push rod mounting plate (10), a guide push rod (13) is slidably connected to the push rod protective sleeve (9), and a push rod threadedly connected to the ball screw (8) is clamped on one end of the guide push rod (13) close to the protective shell (5) The guide sleeve (14) is fixedly connected to a connector guide ring (15) at one end of the guide push rod (13) away from the push rod guide sleeve (14); a locking sleeve (16) threadedly sleeved with the guide push rod (13) is fixedly sleeved on the surface of the connector guide ring (15); a locking sleeve guide ring (17) is fixedly sleeved on the surface of the locking sleeve (16); an end of the locking sleeve guide ring (17) close to the guide push rod (13) is fixedly sleeved on the buffer head shell (12); and the surface of the connector guide ring (15) is sleeved with respective locking sleeves threadedly sleeved with the locking sleeve guide ring (17) and the locking sleeve. (16) a disc spring (4) fixedly connected, one side of the push rod guide sleeve (14) is fixedly installed with an anti-reversal block pressure plate (28) slidably connected to the push rod protective sleeve (9), the surface of the guide push rod (13) is slidably connected with a push rod pressure plate (29) used in conjunction with the push rod guide sleeve (14), the surface of the push rod protective sleeve (9) away from the protective shell (5) is fixedly installed with a waterproof breathable valve (23), and the surface of the ball screw (8) close to the guide push rod (13) is fixedly sleeved with a guide sleeve (31) slidably connected to the guide push rod (13).

2. A buffer push rod according to claim 1, characterized in that: The surfaces of the three-phase AC motor (1) and the right-angle planetary reducer (2) close to one end of each other are fixedly connected with connecting flanges (18) bolted to each other.

3. A buffer push rod according to claim 1, characterized in that: A connecting protective sleeve (19) is provided at one end of the right-angle planetary reducer (2) close to the protective housing (5), and both ends of the connecting protective sleeve (19) are threadedly connected to hexagonal screws (20) that are respectively threadedly connected to the right-angle planetary reducer (2) and the protective housing (5).

4. A buffer push rod according to claim 1, characterized in that: A straight-through pressure-injection oil cup (22) is fixedly mounted on the top of the protective shell (5), and a push rod mounting head (21) is bolted to one end of the protective shell (5) away from the push rod protective sleeve (9).

5. A buffer push rod according to claim 1, characterized in that: A buffer connector (24) is welded to one end of the connector guide ring (15) away from the push rod protective sleeve (9), and a rubber sealing ring (25) is fixedly connected to the inside of the buffer connector (24).

6. A buffer push rod according to claim 1, characterized in that: Both sides of the push rod protective sleeve (9) are fixedly connected with guide grooves (27), and the guide grooves (27) are slidably connected with a magnetic induction switch (26) used in conjunction with the push rod guide sleeve (14).

7. A buffer push rod according to claim 1, characterized in that: Both ends of the push rod protective sleeve (9) are bonded with solid round silicone strips (30) bonded to the push rod mounting plate (10).

8. The buffer push rod according to claim 1, characterized in that: The interior of the position-limiting guide sleeve (11) and the end of the passive meshing gear (6) away from the position-limiting guide sleeve (11) are both fixedly connected to a connecting bearing seat (32) which is respectively fixedly connected to the ball screw sleeve (7) and the protective housing (5).

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