Pump pipe damping and shock absorbing device for vertical pumping of concrete of super high-rise building

Abstract

The application discloses a pump pipe damping and shock absorbing device for vertical pumping of concrete of super-high-rise building, which comprises an upper pump pipe, a lower pump pipe and a damper, the inner steel cylinder wall and the outer steel cylinder wall of the damper cylinder body part are fixed with a bottom ring steel plate; the inner steel cylinder wall is fixed with an outward convex top inner ring steel plate, the outer steel cylinder wall is fixed with an inward convex top outer ring steel plate, and the top inner ring steel plate and the top outer ring steel plate form a ring-shaped guide channel; the damper piston part comprises a piston steel cylinder and a ring-shaped piston body, the ring-shaped piston body is fixed at the lower part of the piston steel cylinder; the piston steel cylinder is in sliding sealing cooperation with the ring-shaped guide channel; the inner steel cylinder wall, the outer steel cylinder wall, the bottom ring steel plate, the top inner ring steel plate and the top outer ring steel plate form a ring-shaped damping cavity, and the ring-shaped piston body is in sliding cooperation in the ring-shaped damping cavity; the upper pump pipe is in sealing connection with the piston steel cylinder, and the lower pump pipe is in sealing connection with the cylinder body part. The device can directly apply damping and shock absorbing effect to the pump pipe itself, so as to reduce the impact on the pump pipe joint.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of super high-rise building construction, in particular to a pump pipe damping and shock absorbing device for vertical pumping and pouring of super high-rise building concrete. BACKGROUND

[0002] During high-rise building construction, pump pipes are used to vertically pump concrete from the ground to the construction operation layer for pouring. Each pump pipe is generally 3 meters long. To meet the height requirement of vertical pumping for high-rise buildings, multiple pump pipes are connected from bottom to top through joints. Moreover, as the pouring height increases, the pumping pressure required for pumping concrete naturally becomes greater and greater. For example, the pouring pressure of pump pipes for normal height buildings is generally 2.5-12 MPa, but the pouring pressure of pump pipes for super high-rise buildings with a height exceeding 300 meters is often as high as 20 MPa or even higher. The increase in pouring pressure will cause the pump pipes to vibrate up and down, especially the pump pipe at the ground floor of the building, which vibrates up and down most violently. This will adversely affect the main structure of the building and the pump pipe itself, reduce the stability of the pump pipe pouring, and also reduce the pouring quality. Therefore, a damping and shock absorbing device needs to be provided between the main structure of the building and the pump pipe.

[0003] The damping and shock absorbing device of the prior art generally includes a plurality of uniformly arranged dampers, usually 4-6 dampers. The piston part of each damper is welded to the outer wall of the pump pipe, and the cylinder body of each damper is fixed to the main structure of the building, such as the floor or the elevator shaft wall. The pump pipe damping and shock absorbing device of the prior art has the following defects.

[0004] Firstly, the damping and shock absorbing device of the prior art is essentially a damping and shock absorbing protection for the floor and elevator shaft wall of the main structure of the building, not for the pump pipe. It is more of damping and shock absorbing by setting outside the pump pipe rather than damping and shock absorbing for the pump pipe itself. The damping effect is more distributed to the floor or elevator shaft wall by the pump pipe, only protecting the main structure of the building, but the pump pipe thrust and vibration caused by pumping concrete in the pump pipe are not effectively alleviated. It is a temporary solution rather than a permanent solution. The pump pipe still has a large upward and downward impact displacement under the action of thrust and pressure. The defect of weak damping effect on the pump pipe itself has little effect on ordinary building height and ordinary pouring pressure, but when facing the pumping pressure of 20 MPa or more for super high-rise building pump pipes, the ground floor pump pipe without damping and shock absorbing protection will move up and down violently, constantly impacting the joint node of the pump pipe, causing the node to wear out and even leak concrete under repeated violent impact. It also affects the stability of the pump pipe conveying concrete and reduces the pouring quality.

[0005] Moreover, the coordination and synchronization of different dampers in the above-mentioned annularly distributed structure are poor, and the dampers are prone to eccentric force, which makes the damper support unstable, and the damer at a certain point in the circumferential direction is subjected to the maximum force. Long-term eccentric force can cause structural instability and damage. Eccentric force can also cause stress concentration and excessive load on the floor at the point in the circumferential direction, which adversely affects the main structure of the building.

[0006] Furthermore, the above-mentioned structure of arranging a ring of dampers around the periphery of the pump pipe has a large overall size, which increases the difficulty of disassembly and assembly, and requires a larger hole to be reserved on the floor to install and fix the damping device. The larger hole increases the workload of later repair and adversely affects the main structure of the building. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a pump pipe damping device for vertical pumping of super high-rise building concrete, which can directly apply damping effect to the pump pipe itself to reduce the up-down vibration of the pump pipe and the impact on the pump pipe joint, and is not prone to eccentric instability, and has a small overall size.

[0008] The technical solution of the present application is a pump pipe damping device for vertical pumping of super high-rise building concrete, which comprises an upper pump pipe, a lower pump pipe and a damper. The damper comprises a cylinder part and a piston part. The cylinder part comprises an inner steel cylinder wall, an outer steel cylinder wall and a bottom ring steel plate. The inner steel cylinder wall and the outer steel cylinder wall are concentric, and both the inner steel cylinder wall and the outer steel cylinder wall are fixed with the bottom ring steel plate. The inner steel cylinder wall is fixed with an outwardly convex top inner ring steel plate, and the outer steel cylinder wall is fixed with an inwardly convex top outer ring steel plate. An annular guide channel is formed between the top inner ring steel plate and the top outer ring steel plate. The piston part comprises a piston steel cylinder and an annular piston body. The annular piston body penetrates a plurality of vertical damping holes, and is fixed at the lower part of the piston steel cylinder. The piston steel cylinder is in sliding sealing cooperation with the annular guide channel. The inner steel cylinder wall, the outer steel cylinder wall, the bottom ring steel plate, the top inner ring steel plate and the top outer ring steel plate form an annular damping cavity, and the annular piston body is in sliding cooperation in the annular damping cavity. The upper pump pipe is in sealing connection with the piston steel cylinder, and the lower pump pipe is in sealing connection with the cylinder part. The part of the inner steel cylinder wall and the piston steel cylinder extending out of the cylinder body forms an extension pipe cavity, and the extension pipe cavity is in communication with the upper pump pipe and the lower pump pipe at both ends.

[0009] Compared with the prior art, the pump pipe damping device has the following advantages.

[0010] The device integrates multiple separate dampers of the prior art into a complete annular damper, forms a through telescopic tube cavity inside the damper and communicates with the upper and lower pump pipes, and essentially integrates the damper directly into the pump pipe to become a part of the pump pipe; thus, the pump pipe itself can be directly damped and shock-absorbed, a greater part of the damping and shock-absorbing effect is applied to the pump pipe itself, damping and shock-absorbing are performed from the source, the pump pipe thrust and vibration caused by pumping concrete in the pump pipe are effectively relieved, the root cause is treated, the amplitude and intensity of the upper and lower impact displacement of the pump pipe are obviously reduced, the impact on the ground layer pump pipe joint is reduced, the pump pipe joint is protected to reduce wear and tear, the joint is prevented from leaking concrete, the stability and durability of the pump pipe for conveying concrete are improved, and the pouring quality is improved.

[0011] Moreover, the overall annular damper naturally solves the poor coordination and synchronization and easy eccentric instability of multiple dampers arranged outside in the prior art, and avoids the defects that the eccentric load damper or the main structure of the building is easily damaged.

[0012] Furthermore, the multiple dampers arranged outside are integrated into a single overall damper in concentricity, the overall size and volume of the damping and shock-absorbing device are obviously reduced, the device is convenient to disassemble and assemble, the area of the mounting hole reserved on the floor is also reduced, the damage to the floor is small, and the repair amount in the later period is reduced.

[0013] The sealing connection structure between the upper pump pipe and the piston part is preferably that the upper pump pipe is provided with an upper flange plate, the upper end of the piston steel cylinder is provided with a middle flange plate, the upper flange plate and the middle flange plate are connected by upper bolts, and the upper flange plate and the middle flange plate are clamped with an upper sealing ring therebetween; the structure is convenient to assemble and disassemble, and the sealing effect after assembly is firm and reliable.

[0014] As a preferred, the middle flange plate is protruded inwardly from the hole wall of the piston steel cylinder center hole, and the inwardly protruded part of the middle flange plate forms an annular mounting plate, the part of the piston steel cylinder extending out of the cylinder body is provided with a corrugated steel pipe, the upper end of the corrugated steel pipe is provided with an outwardly turned annular steel plate, the outwardly turned annular steel plate is clamped between the upper flange plate and the middle flange plate, and the outwardly turned annular steel plate is connected with the upper flange plate and the middle flange plate by the upper bolts; the lower end of the corrugated steel pipe is connected with the upper opening of the inner steel cylinder wall by middle bolts, and a middle sealing ring is clamped between the lower end of the corrugated steel pipe and the upper opening of the inner steel cylinder wall; a cylindrical steel shoe is arranged in the corrugated steel pipe, the thickness of the cylindrical steel shoe is greater than that of the corrugated steel pipe, the lower end of the cylindrical steel shoe is also fixed with the upper opening of the inner steel cylinder wall by the middle bolts, and the upper end of the cylindrical steel shoe extends into the upper pump pipe and is in sliding cooperation with the upper pump pipe.

[0015] The above preferred structure has the following advantages.

[0016] Firstly, the inner flange of the middle flange plate, that is, the effective support of the annular mounting plate, supports the upper end of the corrugated steel pipe, and the lower end of the corrugated steel pipe is supported and fixed on the inner steel cylinder wall. The upper and lower ends are effectively supported to make the corrugated steel pipe have the necessary strength, and combined with the characteristics that the corrugated steel pipe can stretch and contract with the piston part rising and falling, the corrugated steel pipe always covers and protects the part of the piston steel cylinder extending out of the cylinder body, effectively protecting the inner ring surface of the most precise part in the damper, that is, the part of the piston steel cylinder extending out of the cylinder body. Moreover, the upper and lower ends of the corrugated steel pipe are provided with upper and middle sealing rings, so that the inner ring surface of the piston steel cylinder is completely separated from the fine aggregate in the concrete mortar, avoiding the fine aggregate in the concrete mortar from wearing and impacting the inner ring surface of the piston steel cylinder, thereby avoiding the damage and deformation of the inner ring surface of the piston steel cylinder, which causes the piston to be stuck or oil leakage, and makes the damper piston run accurately and lastingly.

[0017] The thicker cylindrical steel shoe protects the corrugated steel pipe and makes up for the hidden danger of insufficient strength of the stretchable corrugated steel pipe, effectively resisting the impact of coarse aggregate in concrete, avoiding the deformation and expansion of the corrugated steel pipe caused by the impact of coarse aggregate, and preventing the deformed and expanded corrugated pipe from scratching the inner ring surface of the piston steel cylinder. The structure of the lower end of the cylindrical steel shoe fixedly connected with the upper pump pipe in sliding connection does not affect the normal lifting of the damper piston.

[0018] Of course, if only the cylindrical steel shoe is used, there is a short board, because there is a gap between the upper end of the cylindrical steel shoe and the upper pump pipe in sliding connection, and the cement slurry and fine sand may enter the area outside the steel shoe through the gap, threatening to wear the inner ring surface of the piston steel cylinder. The presence of the corrugated steel pipe just makes up for the short board of the cylindrical steel shoe. The outer turning annular steel plate at the upper end of the corrugated steel pipe is tightly sealed against the annular mounting plate, which blocks the path of the cement slurry and fine aggregate contacting the inner ring surface of the piston steel cylinder. In short, the cylindrical steel shoe blocks the coarse aggregate in the concrete for the corrugated steel pipe, the corrugated steel pipe avoids the penetration of the fine aggregate in the concrete into the gap at the upper end of the steel shoe, and the cylindrical steel shoe and the corrugated steel pipe work together to make up for each other's shortcomings and completely eliminate the threat of coarse aggregate and fine aggregate in the concrete to the inner ring surface of the piston steel cylinder.

[0019] Moreover, the upper part of the corrugated steel pipe is installed, making use of the existing connection structure of the upper pump pipe and the piston steel cylinder, and the outer turning annular steel plate is clamped by the upper flange plate and the middle flange plate, and the upper bolt is tightened, thereby realizing the connection and sealing of the upper pump pipe, the piston part and the corrugated steel pipe at the same time. Moreover, the assembly and disassembly process of the above-mentioned connection structure is very convenient, and the corrugated steel pipe and the steel shoe can be easily separated from the damper body. Because of the protection of the corrugated steel pipe and the cylindrical steel shoe, the corrugated steel pipe and the cylindrical steel shoe are often damaged before the damper body during normal service. At this time, the corrugated steel pipe and the cylindrical steel shoe can be conveniently replaced alone while the undamaged damper is retained, which can effectively reduce the overall use and maintenance cost of the damping device and avoid waste.

[0020] As a further preferred, the outer side of the piston steel cylinder is provided with laser scale; Specifically, at least a reference line, an upper limit line and a lower limit line can be provided, the reference line is 0mm, and the upper and lower limits are plus or minus 5mm, so that during normal service, workers read the amplitude of the piston part up and down displacement through the laser scale, and use it as the basis for judging whether the damping device works safely, if the amplitude of the piston part up and down displacement exceeds the upper limit or the lower limit, such as more than plus or minus 5mm, then it needs to be stopped for maintenance. The normal maintenance process is to disassemble the upper pump pipe, connect the pressure sensor with the external connector of the damper, measure the oil pressure of the damper, if the oil pressure is normal, only replace the cylindrical steel shoe and the corrugated steel pipe, if the oil pressure of the damper is not normal, replace the new damper.

[0021] As a further preferred, the top inner ring steel plate and the top outer ring steel plate are thickened, and the thickness of the top inner ring steel plate and the top outer ring steel plate is n times of the thickness of the outer steel cylinder wall; in this way, the strength of the sliding fit position of the piston part and the cylinder part is improved, and the annular guide channel is lengthened, the sliding fit distance of the piston steel cylinder is effectively improved, the sealing property of the position is enhanced, and the stability and the guidance of the piston part up and down sliding are improved.

[0022] The sealing connection structure of the lower pump pipe and the cylinder part is preferably that the lower pump pipe is provided with a lower flange plate, the bottom ring steel plate of the cylinder part is welded with a lower convex screw rod, the lower flange plate and the bottom ring steel plate are connected through the screw rod, and a lower sealing ring is clamped between the lower flange plate and the bottom ring steel plate; the structure has firm and stable connection effect and good sealing performance. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the pump pipe damping and shock absorbing device for vertical pumping of concrete of super high-rise building of the application when the device is installed in the main structure of the building.

[0024] Figure 2 is a half-sectional structural schematic view of the pump pipe damping and shock absorbing device for vertical pumping of concrete of super high-rise building of the application.

[0025] Figure 3 is Figure 2 is an exploded structural schematic view of

[0026] Figure 4 is a structural schematic view of the cylinder part of the pump pipe damping and shock absorbing device for vertical pumping of concrete of super high-rise building of the application.

[0027] Figure 5 is a structural schematic view of the piston part of the pump pipe damping and shock absorbing device for vertical pumping of concrete of super high-rise building of the application.

[0028] Figure 6 is Figure 2 is an enlarged structural view of part A in

[0029] Figure 7 is the structure diagram of the cylinder part of the pump pipe damping and shock absorbing device for vertical pumping of concrete of super high-rise building of the present application after showing the Y-shaped sealing ring.

[0030] Figure 8 is Figure 7 the enlarged structure diagram of part B.

[0031] In the figure, 1 is the upper pump pipe, 2 is the lower pump pipe, 3 is the inner steel cylinder wall, 4 is the outer steel cylinder wall, 5 is the bottom ring steel plate, 6 is the top inner ring steel plate, 7 is the top outer ring steel plate, 8 is the annular guide channel, 9 is the piston steel cylinder, 10 is the annular piston body, 11 is the annular damping cavity, 12 is the upper flange plate, 13 is the middle flange plate, 13.1 is the annular mounting plate, 14 is the upper bolt, 15 is the upper sealing ring, 16 is the lower flange plate, 17 is the screw rod, 18 is the lower sealing ring, 19 is the corrugated steel pipe, 19.1 is the outwardly turned annular steel plate, 20 is the middle bolt, 21 is the middle sealing ring, 22 is the cylindrical steel shoe, 23 is the clamp, 24 is the connecting beam, 25 is the Y-shaped sealing ring, 26 is the inner sealing ring, 27 is the outer sealing ring, and 28 is the telescopic pipe cavity. DETAILED DESCRIPTION

[0032] The present application will be further described below in combination with the drawings and specific embodiments.

[0033] As Figures 1-8 shown, the pump pipe damping and shock absorbing device for vertical pumping of concrete of super high-rise building of the present application comprises an upper pump pipe 1, a lower pump pipe 2 and a damper. The upper pump pipe 1 refers to a pump pipe located above the damper, and the lower pump pipe 2 refers to a pump pipe located below the damper. The upper pump pipe 1 is connected to each other by joints in sequence upwards to meet the demand of pumping concrete to high-rise buildings, and the lower pump pipe 2 is also connected to each other by joints in sequence to a concrete tank.

[0034] The damper comprises a cylinder part and a piston part. The cylinder part comprises an inner steel cylinder wall 3, an outer steel cylinder wall 4 and a bottom ring steel plate 5. The inner steel cylinder wall 3 and the outer steel cylinder wall 4 are concentric, the lower end of the inner steel cylinder wall 3 is fixed to the inner edge of the bottom ring steel plate 5, and the lower end of the outer steel cylinder wall 4 is fixed to the outer edge of the bottom ring steel plate 5. The inner steel cylinder wall 3 is fixed with a top inner ring steel plate 6 which is convex to the inner steel cylinder wall 3, and the outer steel cylinder wall 4 is fixed with a top outer ring steel plate 7 which is convex to the outer steel cylinder wall 4, and the annular guide channel 8 is formed between the top inner ring steel plate 6 and the top outer ring steel plate 7.

[0035] The piston section includes a hollow piston cylinder 9 and an annular piston body 10. The annular piston body 10 has multiple vertical damping holes and is fixed to the lower part of the piston cylinder 9. The piston cylinder 9 and the annular guide channel 8 are in sliding sealing fit. As is common knowledge, the sealing between the annular piston cylinder and the annular guide channel 8 is completely similar in principle to the sealing structure of the circular upper opening of a common cylindrical piston rod and cylinder. Both use lip seals such as U-shaped seals or Y-shaped seals 25, and utilize the elastic deformation of rubber or polyurethane materials to generate radial pressure to form a dynamic seal. Of course, the only difference is that the cylindrical piston rod and the upper opening of the cylinder have only one annular sealing surface, while the piston cylinder 9 and the annular guide channel 8 of this application have an outer annular sealing surface and an inner annular sealing surface. That is, the outer annular surface of the top inner ring steel plate 6 and the inner annular surface of the top outer ring steel plate 7 are both provided with Y-shaped seals 25, which dynamically seal with the inner and outer annular surfaces of the piston cylinder 9, respectively.

[0036] The inner steel cylinder wall 3, the outer steel cylinder wall 4, the bottom ring steel plate 5, the top inner ring steel plate 6, and the top outer ring steel plate 7 form an annular damping cavity 11, and the annular piston body 10 slides within the annular damping cavity 11. As is common knowledge, the inner ring surface of the annular piston body 10 is provided with an inner sealing ring 26, and the outer ring surface of the annular piston body 10 is provided with an outer sealing ring 27, which dynamically seal with the inner steel cylinder wall 3 and the outer steel cylinder wall 4, respectively.

[0037] The upper pump pipe 1 is sealed to the piston steel cylinder 9. Specifically, the lower end of the upper pump pipe 1 is provided with an upper flange 12, and the upper end of the piston steel cylinder 9 is provided with a middle flange 13. The upper flange 12 and the middle flange 13 are connected by upper bolts 14, and an upper sealing ring 15 is clamped between the upper flange 12 and the middle flange 13.

[0038] The lower pump pipe 2 is sealed to the cylinder body; specifically, the upper end of the lower pump pipe 2 is provided with a lower flange 16, the bottom ring steel plate 5 of the cylinder body is welded with a downward protruding screw 17, the lower flange 16 and the bottom ring steel plate 5 are connected by the screw 17, and a lower sealing ring 18 is clamped between the lower flange 16 and the bottom ring steel plate 5.

[0039] The inner steel cylinder wall 3 of the cylinder part and the piston steel cylinder 9 of the piston part extend out of the annular guide channel 8 of the cylinder part to form a telescopic cavity 28. The upper end of the telescopic cavity 28 is connected to the cavity of the upper pump pipe 1, and the lower end of the telescopic cavity 28 is connected to the cavity of the lower pump pipe 2.

[0040] The middle flange 13 protrudes from the wall of the central hole of the piston cylinder 9, and the protruding part of the middle flange 13 forms an annular mounting plate 13.1. A corrugated steel pipe 19 is provided on the part of the piston cylinder 9 that extends out of the annular guide channel 8 of the cylinder body. Of course, the lowermost part of the corrugated steel pipe 19 is still located inside the inner steel cylinder wall 3. The upper end of the corrugated steel pipe 19 is provided with an outwardly flared annular steel plate 19.1, which is clamped between the upper flange 12 and the middle flange 13 and is also connected to the upper flange 12 and the middle flange 13 by upper bolts 14. The lower end of the corrugated steel pipe 19 is connected to the upper opening of the inner steel cylinder wall 3 by a middle bolt 20, and a middle sealing ring 21 is clamped between the lower end of the corrugated steel pipe 19 and the upper opening of the inner steel cylinder wall 3. A cylindrical steel shoe 22 is provided inside the corrugated steel pipe 19. The thickness of the cylindrical steel shoe 22 is greater than that of the corrugated steel pipe 19. The lower end of the cylindrical steel shoe 22 is also fixed to the upper opening of the inner steel cylinder wall 3 by a central bolt 20. The upper end of the cylindrical steel shoe 22 extends into the upper pump pipe 1 and slides into the upper pump pipe 1. More precisely, the lower ends of the cylindrical steel shoe 22 and the lower ends of the corrugated steel pipe 19 are both connected to the upper opening of the inner steel cylinder wall 3 by central bolts 20. The cylindrical steel shoe 22 has countersunk holes that correspond one-to-one with the central bolts 20. The central bolts 20 are countersunk bolts embedded in the corresponding countersunk holes.

[0041] The outer side of the piston cylinder 9 is provided with laser scale lines for indicating the vertical displacement of the piston.

[0042] The inner top ring steel plate 6 and the outer top ring steel plate 7 are thickened. The thickness of the inner top ring steel plate 6 and the outer top ring steel plate 7 is n times the thickness of the outer steel cylinder wall 4, such as 3-5 times.

[0043] The cylinder portion of the damping and shock absorption device in this application is fixed to the main structure of the building via clamps 23 and connecting beams 24, such as Figure 1 As shown, the connecting beam 24 is a cantilever structure and is bolted to the elevator shaft wall. Alternatively, the connecting beam 24 can also be fixed to the edge of a hole in the floor slab.

Claims

1. A pump pipe damping and vibration reduction device for vertical pumping of concrete in super high-rise buildings, comprising an upper pump pipe, a lower pump pipe, and a damper, wherein the damper comprises a cylinder part and a piston part, characterized in that: The cylinder body includes an inner steel cylinder wall, an outer steel cylinder wall, and a bottom ring steel plate. The inner and outer steel cylinder walls are concentric and both are fixed to the bottom ring steel plate. A convex top inner ring steel plate is fixed to the inner steel cylinder wall, and a convex top outer ring steel plate is fixed to the outer steel cylinder wall. An annular guide channel is formed between the top inner and top outer ring steel plates. The piston part includes a piston cylinder and an annular piston body. The annular piston body passes through multiple vertical damping holes and is fixed to the lower part of the piston cylinder. The piston cylinder slides and seals with the annular guide channel. The inner steel cylinder wall, outer steel cylinder wall, bottom ring steel plate, top inner ring steel plate, and top outer ring steel plate form an annular damping cavity, in which the annular piston body slides. The upper pump pipe is sealed to the piston cylinder, and the lower pump pipe is sealed to the cylinder body. The portions of the inner steel cylinder wall and piston cylinder extending out of the cylinder body form a telescopic cavity, with both ends of the telescopic cavity connected to the upper and lower pump pipes, respectively. The portion of the piston cylinder extending out of the cylinder body is provided with a corrugated steel pipe. The lower end of the corrugated steel pipe is supported and fixed on the inner steel cylinder wall. A cylindrical steel shoe is provided inside the corrugated steel pipe. The lower end of the cylindrical steel shoe is fixed to the upper end of the inner steel cylinder wall, and the upper end of the cylindrical steel shoe extends into the upper pump pipe and slides in cooperation with the upper pump pipe.

2. The pump pipe damping and vibration reduction device for vertical concrete pumping in super high-rise buildings according to claim 1, characterized in that: The upper pump pipe is equipped with an upper flange at the lower end, and the piston cylinder is equipped with a middle flange at the upper end. The upper flange and the middle flange are connected by upper bolts, and an upper sealing ring is clamped between the upper flange and the middle flange.

3. The pump pipe damping and vibration reduction device for vertical concrete pumping in super high-rise buildings according to claim 2, characterized in that: The middle flange protrudes from the wall of the central hole of the piston cylinder, and the protruding part of the middle flange forms an annular mounting plate. The upper end of the corrugated steel pipe is provided with an outwardly folded annular steel plate, which is clamped between the upper flange and the middle flange and is connected to the upper flange and the middle flange by upper bolts. The lower end of the corrugated steel pipe is connected to the upper opening of the inner steel cylinder wall by middle bolts, and a middle sealing ring is clamped between the lower end of the corrugated steel pipe and the upper opening of the inner steel cylinder wall. The thickness of the cylindrical steel shoe is greater than that of the corrugated steel pipe, and the lower end of the cylindrical steel shoe is also fixed to the upper opening of the inner steel cylinder wall by middle bolts.

4. The pump pipe damping and vibration reduction device for vertical concrete pumping in super high-rise buildings according to claim 1, characterized in that: The outer surface of the piston cylinder is marked with laser-etched graduations.

5. The pump pipe damping and vibration reduction device for vertical concrete pumping in super high-rise buildings according to claim 1, characterized in that: The inner and outer ring steel plates are thickened, and their thickness is n times the thickness of the outer steel cylinder wall.

6. The pump pipe damping and vibration reduction device for vertical concrete pumping in super high-rise buildings according to claim 1, characterized in that: The lower pump pipe is equipped with a lower flange at the upper end. The bottom ring steel plate of the cylinder body is welded with a downward protruding screw. The lower flange and the bottom ring steel plate are connected by the screw, and a lower sealing ring is clamped between the lower flange and the bottom ring steel plate.

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