CN214741390U

CN214741390U - Stand with energy-absorbing scour protection lets position function

Info

Publication number: CN214741390U
Application number: CN202121007166.8U
Authority: CN
Inventors: 曹树祥; 金灿东
Original assignee: Shenyang Tian'an Special Robot Co ltd; Shenyang Tian An Technology Co ltd
Current assignee: Shenyang Tian'an Special Robot Co ltd; Shenyang Tian An Technology Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-11-16
Anticipated expiration: 2031-05-12

Abstract

The utility model provides a stand with energy-absorbing scour protection lets a function, solves the unable powerful impact load of withstanding of hydraulic column that prior art exists, when rock burst takes place, often causes phenomena such as hydraulic column bending, fracture and explosion, influences the problem that the tunnel normally strutted. Including the lower extreme be provided with the stand cylinder body of inlet and release relief valve respectively, its characterized in that: the upper end of the upright post cylinder body is provided with a liquid return port, and the opening at the upper end of the upright post cylinder body is provided with a telescopic movable post in an inserted manner; the lower end of the upper part of the telescopic plunger, which is positioned in the cylinder body of the upright post, is provided with an energy-absorbing impact-proof abdicating piston; a plunger rod sealing element is arranged between the inner wall of the upper end opening of the upright cylinder body and the outer wall of the telescopic plunger. Its reasonable in design, compact structure can absorb impact energy fast, effectively protects hydraulic column structure not receive the influence of impact destruction, ensures borehole operation personnel's personal safety, shortens the recovery production time after assaulting the ground pressure and taking place.

Description

Stand with energy-absorbing scour protection lets position function

Technical Field

The utility model belongs to the technical field of colliery safety support, concretely relates to but quick absorption impact energy, effective protection hydraulic pressure stand structure does not receive the influence of strikeing the destruction, can ensure borehole operation personnel's personal safety, shortens the stand that has energy-absorbing scour protection and stepping down function of the recovery production time after strikeing the ground pressure and taking place.

Background

Rock burst (also called mine earthquake or rock burst) is one of the major disasters in coal mines. With the increasing mining depth of mineral resources, the occurrence frequency and the damage degree of rock burst are increasingly strong. The huge elastic energy released in the moment when the rock burst occurs can cause the situations that the top plate of the roadway sinks and the bottom plate of the roadway swells in the moment, so that the overall instability of the roadway supporting structure, the tipping and damage of mechanical equipment, even casualties and other accidents are caused, and the safety production of the coal mine is seriously influenced.

The hydraulic support is supporting equipment of a fully mechanized coal mining face, and a hydraulic upright post for supporting is a main bearing part of the hydraulic support. In the process of supporting the hydraulic support, the hydraulic upright posts are often influenced by the impact load of the roadway top and the bottom plate. Although the hydraulic upright column used in the hydraulic support has certain capacity of bearing static load, and when the load exceeds the working resistance of the upright column, the aim of buffering and yielding the support can be achieved in a way of discharging liquid through a pressure relief valve of the upright column; however, even with the maximum flow rate relief valve, the draining process takes several seconds or more at the fastest speed. However, when rock burst occurs, the time of loading the maximum load by impact is only between a few milliseconds and a few tens milliseconds, and the pressure relief valve is not opened at all due to insufficient dynamic response time, so that the phenomena of bending, breaking, cylinder explosion and the like of the hydraulic upright column are caused, and the normal support of the roadway is influenced. Because the existing hydraulic column is not designed from the impact-resistant angle, when the coal mine underground rock burst happens, the hydraulic column cannot resist strong impact load, and therefore the structure of the hydraulic column in the prior art needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses just to above-mentioned problem, a but quick absorption impact energy is provided, and effective protection hydraulic column structure does not receive the influence of strikeing the destruction, can ensure borehole operation personnel's personal safety, shortens the stand that has energy-absorbing scour protection and stepping down function of the recovery production time after strikeing the ground pressure and taking place.

The utility model adopts the technical proposal that: this stand with energy-absorbing scour protection lets a function includes the stand cylinder body, its characterized in that: the lower end of the upright cylinder body is respectively provided with a liquid inlet and a pressure relief valve, and the upper end of the upright cylinder body is provided with a liquid return port; a telescopic plunger is inserted and arranged at an opening at the upper end of the upright cylinder body, and an energy-absorbing impact-preventing abdicating piston is arranged at the lower end of the telescopic plunger, which is positioned in the upright cylinder body; and a movable column rod sealing element is arranged between the inner wall of the upper end opening of the upright column cylinder body and the outer wall of the telescopic movable column.

The energy-absorbing impact-preventing yielding piston comprises a piston sleeve, and a rod body connecting cavity with an opening at the upper end is arranged in a sleeve main body of the piston sleeve; the telescopic plunger consists of a plunger rod body, and the lower end of the plunger rod body is provided with a shear plate punching head; the piston sleeve is connected with the lower end of the plunger rod body through the rod body connecting cavity, an anti-impact shear plate is fixedly arranged in the rod body connecting cavity of the piston sleeve and at a position below a shear plate punching head at the lower end of the plunger rod body, and a shear buffer groove is formed below the anti-impact shear plate and at the bottom of the rod body connecting cavity; meanwhile, a piston convex edge is further arranged on the outer wall of the plunger rod body above the opening at the upper end of the piston sleeve, the upper end face of the piston is arranged on the upper side of the piston convex edge, and the lower end face of the piston is arranged on the lower side of the piston sleeve. The lower end face of the piston at the lower side of the piston sleeve or the upper end face of the piston at the upper side of the piston convex edge is pushed by high-pressure liquid medium to drive the telescopic plunger to extend or retract; and at the moment of impact ground pressure, the shear plate stamping head at the lower end of the plunger rod body extrudes and shears the anti-impact shear plate in the piston sleeve, so that the energy-absorbing and abdicating effects are achieved, and the purpose of protecting the hydraulic upright column structure is achieved.

The scour protection shear plate is a constant force destruction component. Under the normal working condition, the telescopic movable column of the hydraulic upright column has enough supporting strength; meanwhile, when rock burst occurs and the impact load exceeds a damage fixing value, the impact-resistant shear plate is subjected to shear damage, and energy absorption yielding is effectively achieved.

Scour protection shear plate comprises the shear plate main part, is provided with the shearing ring hole that a plurality of was arranged along circumference equidistance in the shear plate main part. In order to arrange a plurality of, have the column shear ring hole with the aperture that corresponds with working resistance according to the working resistance of hydraulic column on the shear plate main part to the accurate destruction definite value of settlement scour protection shear plate.

And the shear plate main body of the anti-impact shear plate is provided with annular shear openings arranged along the circumference of the circle center of each shear ring hole. The shearing plate punching head at the lower end of the plunger rod body conveniently prevents the shearing plate from being damaged by utilizing the annular shearing openings arranged on the shearing annular holes, and the using effect of the energy-absorbing impact-preventing abdicating piston is ensured.

The diameter D of the shearing plate punching head at the lower end of the plunger rod body is not more than the diameter D of the circumference where the circle center of each shearing annular hole is located. In order to guarantee the shear plate punching press head of the lower end of the plunger rod body, each shearing annular hole on the anti-impact shear plate can be subjected to effective extrusion shearing.

An anti-impact guide sleeve is arranged at an opening at the upper end of the rod body connecting cavity of the piston sleeve and consists of a guide sleeve main body, a guide post inserting hole is formed in the guide sleeve main body, and a positioning flange is arranged on the outer wall of the upper end of the guide sleeve main body; the guide sleeve main body of the anti-scour guide sleeve is connected with the guide sleeve mounting groove at the upper end of the rod body connecting cavity; the plunger rod body lower extreme, be located the protruding edge of piston and the body of rod between the shear plate punching press head on, be provided with the scour protection guide post, the plunger rod body utilizes the scour protection guide post to link to each other with the guide post plug-in connection hole grafting of scour protection uide bushing. The anti-impact guide post is connected with the anti-impact guide sleeve in a matched mode, and the energy-absorbing anti-impact yielding piston at the lower end of the telescopic plunger performs effective buffering and guiding when receiving impact ground pressure and yielding downwards.

The lower end of the plunger rod body is positioned on the rod body between the anti-impact guide column and the shear plate punching head, and a spacer sleeve connecting part is also arranged on the plunger rod body, and an anti-impact piston spacer sleeve is fixedly arranged on the spacer sleeve connecting part; the scour protection piston spacer sleeve is composed of a spacer sleeve main body, a rod body connecting hole is formed in the middle of the spacer sleeve main body, and the scour protection piston spacer sleeve is connected with a spacer sleeve connecting portion of the plunger rod body through the rod body connecting hole. The position of the lower end of the plunger rod body in the rod body connecting cavity of the piston sleeve is fixed by utilizing the matched clamping of the scour prevention piston retaining sleeve at the lower end of the plunger rod body and the scour prevention guide sleeve fixedly arranged above the scour prevention piston retaining sleeve.

And an energy-absorbing cushion pad is arranged in the shearing cushion groove at the bottom of the rod body connecting cavity of the piston sleeve. The impact energy is absorbed quickly by shearing the energy-absorbing buffer cushion in the buffer groove when the impact-proof shear plate is extruded and sheared under the action that the shear plate punching head at the lower end of the plunger rod body is impacted and the hydraulic upright post is protected.

A first energy absorption buffer ring is arranged on the outer side of the upper end of the shear plate stamping head at the lower end part of the plunger rod body; and a second energy-absorbing buffer ring is arranged on the lower side of the piston convex edge on the outer wall of the lower end of the plunger rod body. When the energy-absorbing impact-preventing yielding piston at the lower end of the telescopic plunger is under the action of rock burst, the first energy-absorbing buffer ring and the second energy-absorbing buffer ring are utilized to quickly absorb impact energy, so that the structure of the hydraulic upright is effectively protected.

The utility model has the advantages that: because the utility model adopts the upright post cylinder body with the lower end respectively provided with the liquid inlet and the pressure relief valve, the upper end of the upright post cylinder body is provided with the liquid return port; the upper end opening of the upright post cylinder body is provided with a telescopic movable post in an inserted manner; the lower end of the upper part of the telescopic plunger, which is positioned in the cylinder body of the upright post, is provided with an energy-absorbing impact-proof abdicating piston; the structural form of the movable column rod sealing element is arranged between the inner wall of the upper end opening of the upright column cylinder body and the outer wall of the telescopic movable column, so that the hydraulic upright column has reasonable design and compact structure, not only has the advantage of rigid support, but also has the function of preventing impact and yielding, can quickly absorb impact energy, and effectively protects the hydraulic upright column structure from being influenced by impact damage; and valuable buffering time is provided for opening the pressure relief safety valve of the hydraulic upright column, and the defect that the hydraulic upright column of the existing structure is insufficient in impact resistance is overcome. Moreover, the personal safety of underground operators can be practically guaranteed, and the production recovery time after the ground pressure impact is generated is shortened.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a connection structure of the telescopic plunger and the energy-absorbing anti-collision yielding piston in fig. 1.

Fig. 3 is a schematic view of a structure of the plunger body of fig. 2.

Fig. 4 is a schematic view of a construction of the piston sleeve of fig. 2.

Fig. 5 is a schematic view of a structure of the anti-shear plate of fig. 2.

Fig. 6 is a schematic perspective view of fig. 5.

Fig. 7 is a schematic view of a structure of the anti-impingement piston sleeve of fig. 2.

Figure 8 is a schematic view of a structure of the impingement guide sleeve of figure 2.

Fig. 9 is a schematic perspective view of fig. 8.

The sequence numbers in the figures illustrate: 1 cylinder body of a vertical column, 2 liquid inlets, 3 liquid return ports, 4 pressure relief valves, 5 telescopic plungers, 6 energy-absorbing impact-proof yielding pistons, 7 sealing elements of plunger rods, 8 plunger rod bodies, 9 piston sleeves, 10 impact-proof shear plates, 11 impact-proof piston baffle sleeves, 12 impact-proof guide sleeves, 13 energy-absorbing cushion pads, 14 first energy-absorbing cushion rings, 15 second energy-absorbing cushion rings, 16 piston convex edges, 17 piston upper end surfaces, 18 impact-proof guide columns, 19 baffle sleeve connecting parts, 20 shear plate punching heads, 21 wear-resistant guide rings, 22 sleeve bodies, 23 rod body connecting cavities, 24 shear cushion grooves, 25 guide sleeve mounting grooves, 26 sealing ring mounting grooves, 27 guide ring mounting grooves, 28 piston lower end surfaces, 29 shear plate bodies, 30 shear ring holes, 31 annular shear openings, 32 baffle sleeve bodies, 33 rod body connecting holes, 34 guide sleeve bodies, 35 guide rod inserting holes and 36 positioning flanges.

Detailed Description

The specific structure of the present invention is described in detail with reference to fig. 1 to 9. This stand with energy-absorbing scour protection abdicating function includes stand cylinder body 1, and wherein, the lower extreme of stand cylinder body 1 is provided with inlet 2 and release relief valve 4 respectively, and the upper end of stand cylinder body 1 is provided with back liquid mouth 3. The upper end opening part of the upright post cylinder body 1 is provided with a telescopic plunger 5 in an inserted connection mode, the telescopic plunger 5 is composed of a plunger rod body 8, and the lower end of the plunger rod body 8 is provided with a shear plate punching head 20. And the lower end part of the telescopic plunger 5, which is positioned on the plunger rod body 8 and inside the upright cylinder body 1, is also provided with an energy-absorbing impact-proof yielding piston 6 for quickly absorbing impact energy. A plunger rod sealing element 7 is arranged between the inner wall of the upper end opening of the upright cylinder body 1 and the outer wall of the plunger rod body 8 of the telescopic plunger 5. It can be understood that the pillar with the functions of energy absorption, impact prevention and abduction can adopt the structural form of a single-stage telescopic pillar or a multi-stage telescopic pillar according to specific use requirements.

The energy-absorbing impact-preventing yielding piston 6 comprises a piston sleeve 9, and a rod body connecting cavity 23 with an opening at the upper end is arranged in a sleeve main body 22 of the piston sleeve 9; a sealing ring mounting groove 26 is arranged on the outer side wall of the sleeve main body 22, and a sealing structure is arranged in the sealing ring mounting groove 26; guide ring mounting grooves 27 are further respectively formed above and below the seal ring mounting grooves 26 and on the outer side wall of the sleeve main body 22, and wear-resistant guide rings 21 are arranged in the guide ring mounting grooves 27. The piston sleeve 9 is connected with the lower end of the plunger rod body 8 of the telescopic plunger 5 through the rod body connecting cavity 23; the anti-impact shear plate 10 is fixedly arranged at a position below the shear plate punching head 20 at the lower end of the plunger rod body 8 inside the rod body connecting cavity 23 of the piston sleeve 9. The anti-impact shear plate 10 is a constant force damage part, so that the telescopic plunger 5 of the hydraulic upright post has enough supporting strength under normal working conditions; meanwhile, when rock burst occurs and the impact load exceeds a damage fixing value, the impact-resistant shear plate 10 is subjected to shear damage, and energy absorption yielding is effectively achieved. A shearing buffer groove 24 is arranged below the anti-impact shearing plate 10 and at the bottom of the rod body connecting cavity 23 of the piston sleeve 9.

The scour protection shear plate 10 with the constant force failure characteristic is composed of a disc-shaped shear plate main body 29, and a plurality of columnar shear ring holes 30 which are equidistantly arranged along the circumference are arranged on the shear plate main body 29; the shear ring 30 is designed according to the working resistance of the hydraulic column, namely: the diameter of the cylindrical shear ring 30 corresponds to the working resistance to accurately set the damage tolerance of the anti-impact shear plate 10. The shear plate body 29 of the erosion preventing shear plate 10 is further provided with an annular shear notch 31 arranged along the circumference of the shear ring hole 30 at the center of the shear buffer groove 24. Therefore, the annular shearing notches 31 arranged on the shearing annular holes 30 are utilized to facilitate the damage of the shearing plate punching head 20 at the lower end of the plunger rod body 8 to the anti-impact shearing plate 10, and the using effect of the energy-absorbing anti-impact abdicating piston 6 is ensured. In order to guarantee the shear plate punching head 20 at the lower end of the plunger rod body 8, each shear annular hole 30 on the anti-impact shear plate 10 can be subjected to effective extrusion shearing, and the diameter D of the shear plate punching head 20 at the lower end of the plunger rod body 8 is not larger than the diameter D of the circle where the circle center of each shear annular hole 30 is located.

Meanwhile, a piston convex edge 16 is arranged on the outer wall of the plunger rod body 8 of the telescopic plunger 5 above the opening at the upper end of the piston sleeve 9, and a stamping space is arranged between the lower side of the piston convex edge 16 and the opening at the upper end of the piston sleeve 9; and a wear-resistant guide ring 21 is arranged in a guide ring mounting groove 27 on the outer side wall of the piston convex edge 16; the wear-resistant guide ring 21 may be made of a resin-sandwiched fabric. The upper end surface 17 of the piston, which is positioned in a liquid return cavity communicated with the liquid return port 3, is arranged on the upper side of the piston convex edge 16; the lower side of the piston sleeve 9 is provided with a piston lower end surface 28 which is positioned in a liquid inlet cavity communicated with the liquid inlet 2; and then the high-pressure liquid medium is used for pushing the lower end surface 28 of the piston at the lower side of the piston sleeve 9 or the upper end surface 17 of the piston at the upper side of the piston convex edge 16 to drive the telescopic plunger 5 to extend or retract. And, at the moment that the rock burst takes place, through the shear plate ram head 20 of the telescopic plunger 5's plunger body 8 lower extreme, the extrusion shearing of the internal scour protection shear plate 10 of the body of rod connecting chamber 23 of piston sleeve 9 plays the effect of energy-absorbing abdication, and then reaches the purpose of protection hydraulic column structure.

In the shearing dashpot 24 of 23 bottoms in the body of rod connecting chamber of piston sleeve 9, be provided with discoid energy-absorbing blotter 13 to the shear plate ram-press head 20 at the lower extreme of the plunger body of rod 8 receives the effect of rock burst, when carrying out the extrusion shearing to scour protection shear plate 10, through energy-absorbing blotter 13 in the shearing dashpot 24, come the quick absorption impact energy, protect the structure of hydraulic pressure stand. And, the upper end outside of the shear plate ram-press head 20 of the lower end of the plunger rod body 8, there is the first energy-absorbing buffer ring 14, the piston protruding edge 16 downside on the outer wall of the lower end of the plunger rod body 8, still there is the second energy-absorbing buffer ring 15, and then when the whole energy-absorbing scour protection abdicating piston 6 of the lower end of the telescopic plunger 5 receives the impact ground pressure, utilize the first energy-absorbing buffer ring 14 and the second energy-absorbing buffer ring 15 to further absorb the impact energy, protect the structure of the hydraulic column effectively. According to specific use requirements, the energy-absorbing cushion 13, the first energy-absorbing cushion ring 14 and the second energy-absorbing cushion ring 15 can be made of elastic energy-absorbing materials such as porous foamed aluminum, polyurethane or rubber.

The upper end opening of the rod body connecting cavity 23 of the piston sleeve 9 is also provided with an anti-impact guide sleeve 12. The anti-impact guide sleeve 12 is composed of a guide sleeve main body 34, a guide post insertion hole 35 is formed in the guide sleeve main body 34, a guide ring installation groove 27 is formed in the inner side wall of the guide post insertion hole 35, and a wear-resistant guide ring 21 is arranged in the guide ring installation groove 27; and a positioning flange 36 is provided on the outer wall of the upper end of the guide sleeve body 34. The guide sleeve body 34 of the scour prevention guide sleeve 12 is connected with the internal thread on the inner wall of the guide sleeve mounting groove 25 at the upper end of the rod body connecting cavity 23 through the external thread on the outer wall. Correspondingly, the lower end of the plunger rod body 8 of the telescopic plunger 5 and the rod body positioned between the piston convex edge 16 and the shear plate punching head 20 are provided with anti-impact guide posts 18, and the lower end of the plunger rod body 8 is connected with the guide post inserting holes 35 of the anti-impact guide sleeve 12 in an inserting manner by utilizing the anti-impact guide posts 18; and then through the cooperation connection of scour protection uide post 18 and scour protection uide bushing 12, for the energy-absorbing scour protection of flexible plunger 5 lower extreme piston 6 when receiving the ground pressure of impact, downward energy-absorbing abdication, carry out effectual buffering direction.

In addition, the lower end of the plunger rod body 8 of the telescopic plunger 5 is positioned on the rod body between the scour prevention guide post 18 and the shear plate punching head 20, and is also provided with a spacer sleeve connecting part 19, and a scour prevention piston spacer sleeve 11 is fixedly arranged on the spacer sleeve connecting part 19. The scour protection piston spacer sleeve 11 is composed of a spacer sleeve main body 32, and a rod body connecting hole 33 is formed in the middle of the spacer sleeve main body 32; the outer side wall of the retaining sleeve main body 32 is also provided with a guide ring installation groove 27, and a wear-resistant guide ring 21 is arranged in the guide ring installation groove 27. The scour protection piston retaining sleeve 11 is connected with the external thread on the outer wall of the retaining sleeve connecting part 19 at the lower end of the plunger rod body 8 through the internal thread in the rod body connecting hole 33. Therefore, the position of the lower end of the plunger rod body 8 in the rod body connecting cavity 23 of the piston sleeve 9 is fixed by utilizing the matched clamping of the scour prevention piston retaining sleeve 11 at the lower end of the plunger rod body 8 and the scour prevention guide sleeve 12 fixedly arranged above the scour prevention piston retaining sleeve, and the reliability of connection is ensured.

When the upright post with the energy-absorbing impact-preventing abdicating function is used, a plurality of groups of upright posts are arranged between the base and the top beam of the hydraulic support to form a supporting structure. In the coal mining process, when the pressure of the surrounding rock of the roadway is lower than the working resistance of the upright column, the upright column and the hydraulic support are in a normal working state integrally; when the pressure of the surrounding rock of the roadway exceeds the working resistance of the upright column by a certain value (for example, more than 10 percent), the pressure relief safety valve 4 is opened, and the pressure relief function under the static load working condition is realized.

When rock burst occurs, impact load directly acts on a column head of the upright column telescopic plunger 5 through a top beam of the hydraulic support; and the pressure of the cavity below the telescopic plunger 5 is rapidly increased along with the pressure, so that the piston sleeve 9 of the energy-absorbing impact-proof yielding piston 6 is propped against, and the piston sleeve 9 cannot be downwards flushed. Thereby, order about the plunger body of rod 8 and the piston sleeve 9 of flexible plunger 5 and produce relative motion to in the impact load effect an instant, utilize the shear plate punching press head 20 of the plunger body of rod 8 lower extreme of flexible plunger 5, carry out the extrusion shearing to the inside scour protection shear plate 10 of the body of rod connecting cavity 23 of piston sleeve 9, and then play the effect that the energy-absorbing was abdied. Meanwhile, the impact energy is continuously and rapidly absorbed through the energy-absorbing cushion 13 in the shearing cushion groove 24 at the bottom of the piston sleeve 9, the first energy-absorbing cushion ring 14 on the outer side of the upper end of the shearing plate punching head 20 and the second energy-absorbing cushion ring 15 on the lower side of the piston convex edge 16, and the purpose of protecting the hydraulic upright column structure is achieved, so that the deformation and the damage of the surrounding rock of the roadway are prevented, and the safety of field personnel is effectively protected.

Claims

1. The utility model provides a stand with energy-absorbing scour protection lets position function, includes stand cylinder body (1), its characterized in that: the lower end of the upright cylinder body (1) is respectively provided with a liquid inlet (2) and a pressure relief valve (4), and the upper end of the upright cylinder body (1) is provided with a liquid return port (3); moreover, a telescopic plunger (5) is inserted and arranged at an opening at the upper end of the upright cylinder body (1), and an energy-absorbing impact-preventing abdicating piston (6) is arranged on the telescopic plunger (5) and at the lower end of the inside of the upright cylinder body (1); and a movable column rod sealing element (7) is further arranged between the inner wall of the upper end opening of the upright column cylinder body (1) and the outer wall of the telescopic movable column (5).

2. The upright post with the energy-absorbing impact-resisting yield-avoiding function according to claim 1, characterized in that: the energy-absorbing impact-preventing yielding piston (6) comprises a piston sleeve (9), and a rod body connecting cavity (23) with an opening at the upper end is arranged in a sleeve main body (22) of the piston sleeve (9); the telescopic plunger (5) is composed of a plunger rod body (8), and the lower end of the plunger rod body (8) is provided with a shear plate punching head (20); the piston sleeve (9) is connected with the lower end of the plunger rod body (8) through a rod body connecting cavity (23), an anti-impact shear plate (10) is fixedly arranged in the rod body connecting cavity (23) of the piston sleeve (9) and at a position below a shear plate stamping head (20) at the lower end of the plunger rod body (8), and a shear buffer groove (24) is formed below the anti-impact shear plate (10) and at the bottom of the rod body connecting cavity (23); meanwhile, a piston convex edge (16) is further arranged on the outer wall of the plunger rod body (8) above the opening at the upper end of the piston sleeve (9), a piston upper end face (17) is arranged on the upper side of the piston convex edge (16), and a piston lower end face (28) is arranged on the lower side of the piston sleeve (9).

3. The upright post with the energy-absorbing impact-resisting yield-avoiding function according to claim 2, characterized in that: the anti-impact shear plate (10) is a constant force damage component.

4. The upright post with the energy-absorbing impact-resisting yield-avoiding function according to claim 3, characterized in that: scour protection shear plate (10) comprise shear plate main part (29), are provided with shearing ring hole (30) that a plurality of was arranged along circumference equidistance on shear plate main part (29).

5. The upright post with the energy-absorbing impact-resisting yield function according to claim 4, characterized in that: the shear plate main body (29) of the anti-impact shear plate (10) is provided with annular shear openings (31) which are arranged along the circumference where the circle centers of all the shear ring holes (30) are located.

6. The upright post with the energy-absorbing impact-resisting yield function according to claim 4, characterized in that: the diameter D of the shearing plate punching head (20) at the lower end of the plunger rod body (8) is not more than the diameter D of the circumference where the circle center of each shearing annular hole (30) is located.

7. The upright post with the energy-absorbing impact-resisting yield-avoiding function according to claim 2, characterized in that: an anti-impact guide sleeve (12) is arranged at an opening at the upper end of a rod body connecting cavity (23) of the piston sleeve (9), the anti-impact guide sleeve (12) is composed of a guide sleeve main body (34), a guide post inserting hole (35) is formed in the guide sleeve main body (34), and a positioning flange (36) is arranged on the outer wall of the upper end of the guide sleeve main body (34); a guide sleeve main body (34) of the scour prevention guide sleeve (12) is connected with a guide sleeve mounting groove (25) at the upper end of the rod body connecting cavity (23); the plunger rod body (8) lower extreme, be located the protruding edge of piston (16) and shear plate punching press head (20) between the body of rod on, be provided with scour protection guide post (18), plunger rod body (8) utilize scour protection guide post (18) and the guide post plug-in connection hole (35) of scour protection uide bushing (12) to peg graft and link to each other.

8. The upright post with the energy-absorbing impact-resisting yield-avoiding function according to claim 7, characterized in that: a baffle sleeve connecting part (19) is further arranged on the lower end of the plunger rod body (8) and the rod body between the scour prevention guide post (18) and the shear plate punching head (20), and a scour prevention piston baffle sleeve (11) is fixedly arranged on the baffle sleeve connecting part (19); the scour protection piston spacer sleeve (11) is composed of a spacer sleeve main body (32), a rod body connecting hole (33) is formed in the middle of the spacer sleeve main body (32), and the scour protection piston spacer sleeve (11) is connected with a spacer sleeve connecting portion (19) of the plunger rod body (8) through the rod body connecting hole (33).

9. The upright post with the energy-absorbing impact-resisting yield-avoiding function according to claim 2, characterized in that: and an energy-absorbing cushion pad (13) is arranged in a shear buffer groove (24) at the bottom of the rod body connecting cavity (23) of the piston sleeve (9).

10. The upright post with the energy-absorbing impact-resisting yield-avoiding function according to claim 2, characterized in that: a first energy absorption buffer ring (14) is arranged on the outer side of the upper end of the shear plate stamping head (20) at the lower end part of the plunger rod body (8); and a second energy-absorbing buffer ring (15) is arranged on the lower side of a piston convex edge (16) on the outer wall of the lower end of the plunger rod body (8).