Vertical elbow supporting and damping device for concrete pump pipe

Abstract

The invention discloses a concrete pump pipe vertical elbow supporting and damping device, and relates to the technical field of constructional engineering, the concrete pump pipe vertical elbow supporting and damping device comprises a supporting system and a damping system, the vibration reduction system comprises an outer fixing ring fixed to the top of the supporting system, an inner fixing ring arranged in the outer fixing ring and a plurality of elastic supporting vibration reduction assemblies connected between the outer fixing ring and the inner fixing ring, and the inner fixing ring is detachably and fixedly arranged on the vertical elbow in a sleeving mode; the multiple elastic supporting vibration reduction assemblies are evenly distributed in the circumferential direction of the outer fixing ring and used for providing vertical and horizontal elastic supporting for the inner fixing ring. Through the synergistic effect of the supporting system and the vibration reduction system, flexible supporting and multi-dimensional vibration isolation of the vertical elbow are achieved, vibration energy is prevented from being directly transmitted to a building main body structure, and accumulated damage to the building main body structure is avoided.

Description

Technical Field

[0001] This application relates to the field of building engineering technology, specifically to a vibration damping device for vertical elbow support of concrete pump pipe. Background Technology

[0002] In building construction, concrete pumping technology has become the primary method for conveying concrete in high-rise and super high-rise buildings due to its high efficiency and continuous operation. When concrete is transported at height through a pumping system, at pipe bends, especially at elbows where the horizontal section transitions to the vertical section, the high-speed flow of concrete impacts the pipe wall, accompanied by a sudden change in momentum due to the abrupt change in flow direction, which can induce severe vibrations in the pumping pipe. Simultaneously, the vertical elbow, as the transition node between the horizontal and vertical sections, must continuously bear the combined load of the upper pumping pipe's own weight and the gravity of the concrete inside. Under the coupled effect of pulsed pumping pressure and continuous gravity load, the vertical elbow is prone to multi-directional coupled vibration and reciprocating displacement. In severe cases, this can lead to loosening of flange connections, fatigue cracking of the pipe wall, or even collapse and leakage of grout. This not only causes construction interruptions and increases maintenance costs but may also trigger safety accidents such as falling objects from heights, posing a serious threat to construction progress and on-site safety. Therefore, effective displacement control and vibration suppression of this critical area are of significant engineering importance.

[0003] Traditional vertical elbow reinforcement often employs simple rigid supports formed by steel pipe fasteners or welded steel sections. These supports directly lock and support the vertical elbow to the structural floor slab or cast-in-place wall to limit vertical and horizontal displacement. However, while this rigid connection method can constrain the geometric position of the pump pipe, the dynamic impact energy generated during pump operation is not effectively dissipated and is directly transmitted to the main building structure through the supports, creating significant impact reaction forces. Long-term vibration transmission can easily lead to micro-cracks in the cast-in-place floor slab, loosening and failure of embedded anchors, and even localized damage to the concrete structure during the curing period, thus exacerbating structural safety hazards.

[0004] To mitigate the vibration transmission defects of rigid supports, existing technologies have introduced improved solutions by laying rubber pads between the bottom of the support and the floor slab contact surface, utilizing the elastic deformation of the rubber material to absorb some of the vertical impact energy. However, since the rubber pads can only provide limited compressive deformation space in the vertical direction, their vertical damping stroke is limited by the material thickness and stiffness. Furthermore, the friction between the rubber and concrete contact surfaces is insufficient to support the support in forming effective shear slip deformation in the horizontal direction, resulting in vibrations in both the horizontal and torsional directions being transmitted to the main building structure with almost no attenuation. This unidirectional damping design cannot cope with the multidimensional vibration characteristics of pump pipes, resulting in low overall damping efficiency and failing to fundamentally solve the problem of cumulative damage to the main building structure caused by concrete pumping vibration. Summary of the Invention

[0005] The purpose of this application is to provide a vibration damping device for supporting vertical elbows of concrete pump pipes, which solves the problem of vibrations generated by vertical elbows during pumping being transmitted to the main building structure and causing damage to the main building structure.

[0006] The technical solution adopted by this application to solve its technical problem is: A vibration damping device for supporting vertical bends in concrete pump pipes includes a support system and a vibration damping system. The support system is fixed to the main structure of a building. The vibration damping system includes an outer fixing ring fixed to the top of the support system, an inner fixing ring disposed within the outer fixing ring, and a plurality of elastic support and vibration damping components connecting the outer fixing ring and the inner fixing ring. The inner fixing ring is detachably and securely fitted onto the vertical bend. The plurality of elastic support and vibration damping components are evenly distributed along the circumference of the outer fixing ring and are used to provide vertical and horizontal elastic support for the inner fixing ring.

[0007] Furthermore, the elastic support vibration damping assembly includes an inner fixing rod and an outer fixing rod coaxially arranged and extending radially along the outer fixing ring. One end of the outer fixing rod is connected to the outer fixing ring, and the other end of the outer fixing rod is provided with a receiving hole extending axially therein. A damping spring, a spring baffle, and an elastic damping sleeve are arranged sequentially from the inside to the outside in the receiving hole. One end of the inner fixing rod is connected to the inner fixing ring, and the other end of the inner fixing rod is inserted into the elastic damping sleeve and abuts against the spring baffle.

[0008] Furthermore, the outer fixing ring is provided with a mounting hole that extends radially through it, and the outer fixing rod passes through the mounting hole and is detachably connected to the outer fixing ring.

[0009] Furthermore, the outer fixing rod can move axially and rotate circumferentially within the mounting hole. The mounting hole wall is provided with a relief groove that communicates with and penetrates the outer fixing ring. A stop block that can pass through the relief groove is fixed on the outer fixing rod. The outer fixing ring is provided with an anti-rotation groove on the side facing the inner fixing ring, which is misaligned with the relief groove along the circumference of the mounting hole. When the outer fixing rod rotates to a preset angle, the stop block can be locked in the anti-rotation groove.

[0010] Furthermore, a rotating handle is fixed to the end of the outer fixing rod away from the inner fixing ring.

[0011] Furthermore, both the outer fixing ring and the inner fixing ring are clamp structures.

[0012] Furthermore, the support system includes multiple vertically arranged legs, which are evenly distributed along the circumference of the outer fixing ring. The lower end of each leg is used to fix it to the main building structure, and the upper end of each leg has a downwardly recessed support portion on the side facing the outer fixing ring. The outer fixing ring is supported on the multiple support portions.

[0013] Furthermore, an elastic damping pad is provided between the outer fixing ring and the support portion.

[0014] Furthermore, a reinforcing rib is fixed to the inner wall of the outer fixing ring, and the reinforcing rib is supported on the support portion.

[0015] Furthermore, the multiple outriggers are detachably connected by retaining rings.

[0016] The beneficial effects of this application are: The concrete pump pipe vertical elbow support vibration damping device provided in this application embodiment achieves flexible support and multi-dimensional vibration isolation for the vertical elbow through the synergistic effect of the support system and the vibration damping system. By adopting an inner and outer double-ring separated structure design for the vibration damping system, multiple elastic support vibration damping components are evenly distributed circumferentially between the inner and outer fixed rings, forming a soft connection vibration isolation layer with vertical and horizontal elastic constraints. When the concrete in the pump pipe impacts the vertical elbow at high speed, generating multi-dimensional vibration, the vibration energy is first transferred to the inner fixed ring, and then fully absorbed and dissipated through the shear, compression, and tensile deformation of the elastic support vibration damping components, rather than being directly transferred to the main building structure. This effectively blocks the transmission path of pulsed pumping pressure to the floor slab and walls, thus avoiding cumulative damage to the main building structure.

[0017] In terms of load-bearing performance, this application achieves coordinated load sharing and bidirectional pre-tightening through multiple elastic support and vibration damping components. When the vertical elbow bears the continuous vertical load of the upper pump pipe's self-weight and the weight of the concrete inside the pipe, each elastic support and vibration damping component jointly provides vertical support force. When the pumping pressure suddenly changes and generates a horizontal impact force, the circumferentially distributed elastic support and vibration damping components form a bidirectional pre-tightening constraint, enabling the vertical elbow to generate a small elastic displacement within the design allowable range to release the impact stress. At the same time, the elastic restoring force quickly maintains geometric stability, significantly reducing the risk of flange interface loosening due to forced displacement and pipe wall cracking due to fatigue, thus ensuring the sealing performance and structural integrity of the pumping system. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a state diagram of the vertical elbow support vibration reduction device for concrete pump pipe provided in the embodiments of this application, used to support the vertical elbow. Figure 2 This is a perspective view of the vertical elbow support vibration reduction device for concrete pump pipe provided in the embodiments of this application; Figure 3 This is a structural schematic diagram of the vibration reduction system; Figure 4 This is a schematic diagram of the inner fixing ring; Figure 5 This is a partial structural diagram of the elastic support vibration damping component; Figure 6 This is a magnified view of the external fixing rod passing through the mounting hole.

[0020] Figure label: 1-Support system; 11-Outrigger; 111-Support section; 112-Elastic vibration damping pad; 12-Fixing ring; 2- Vibration damping system; 21 - External fixing ring; 211-Mounting hole; 212-Allowing groove; 213-Anti-rotation groove; 214-Reinforcing rib; 22-Inner fixing ring; 23-Elastic support vibration damping component; 231-Inner fixing rod; 232-Outer fixing rod; 2321-Accommodation hole; 2322-Stop block; 233-Damping spring; 234-Spring baffle; 235-Elastic damping sleeve; 236-Rotating handle; 24- Circular space; 25-Limit Block; 3-Main structure of the building; 4-Vertical bend. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0022] In the description of this application, the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in actual application, provided that the relative positional relationships shown in the accompanying drawings are satisfied.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] See Figure 1 , Figure 2 This application provides a vertical elbow support vibration reduction device for concrete pump pipes, including a support system 1 and a vibration reduction system 2. The support system 1 is used to fix it to the main building structure 3. The vibration reduction system 2 includes an outer fixing ring 21 fixed to the top of the support system 1, an inner fixing ring 22 disposed inside the outer fixing ring 21, and a plurality of elastic support vibration reduction components 23 connected between the outer fixing ring 21 and the inner fixing ring 22. The inner fixing ring 22 is used to detachably and fix it to the vertical elbow 4. The plurality of elastic support vibration reduction components 23 are evenly distributed along the circumference of the outer fixing ring 21 and are used to provide vertical and horizontal elastic support for the inner fixing ring 22.

[0025] Specifically, the support system 1 is a load-bearing frame, which can be a frame structure assembled from steel profiles. Its bottom is fixed to the floor slab or wall of the main building structure 3 via anchor bolts or embedded parts, providing reliable base support. The vibration damping system 2 is installed on top of the support system 1 and includes an outer fixing ring 21, an inner fixing ring 22, and multiple elastic support vibration damping components 23. The outer fixing ring 21 is a rigid circular ring structure with its axis vertically oriented. It can be fixed to the top of the support system 1 by welding, flange connection, or snap-fit. The inner fixing ring 22 is a ring structure coaxial with the outer fixing ring 21. Its inner diameter matches the outer diameter of the vertical elbow 4, and it can be detachably and securely fitted onto the outer wall of the vertical section of the vertical elbow 4 using clamps, bolts, or clips. An annular space 24 is formed between the outer fixed ring 21 and the inner fixed ring 22. Multiple elastic support damping components 23 are disposed within this annular space 24 and evenly arranged along the circumference of the outer fixed ring 21. Each elastic support damping component 23 has its two ends connected to both the outer fixed ring 21 and the inner fixed ring 22, forming an elastic support. Here, "multiple elastic support damping components 23" refers to at least two elastic support damping components 23; the specific number can be adjusted according to the load size and is not limited here. The elastic support damping components 23 can adopt a spring-damping composite structure or a highly elastic rubber-metal composite structure, capable of providing elastic restoring force simultaneously in the vertical and horizontal directions, causing the inner fixed ring 22 to float relative to the outer fixed ring 21. In this embodiment, eight elastic support damping components 23 are evenly distributed circumferentially.

[0026] The concrete pump pipe vertical elbow support vibration damping device provided in this embodiment achieves flexible support and multi-dimensional vibration isolation for the vertical elbow 4 through the synergistic effect of the support system 1 and the vibration damping system 2. By adopting an inner and outer double-ring separation structure design for the vibration damping system 2, multiple elastic support vibration damping components 23 are evenly distributed circumferentially between the inner fixed ring 22 and the outer fixed ring 21, forming a soft connection vibration isolation layer with vertical and horizontal elastic constraints. When the concrete in the pump pipe impacts the vertical elbow 4 at high speed and generates multi-dimensional vibration, the vibration energy is first transmitted to the inner fixed ring 22, and then fully absorbed and dissipated through the shear, compression, and tensile deformation of the elastic support vibration damping components 23, rather than being directly transmitted to the main building structure 3. This blocks the transmission path of pulsed pumping pressure to the floor slab and walls from the source, effectively avoiding cumulative damage to the main building structure 3.

[0027] In terms of load-bearing performance, this application achieves coordinated load sharing and bidirectional pre-tightening through multiple elastic support and vibration damping components 23. When the vertical elbow 4 bears the continuous vertical load of the upper pump pipe's self-weight and the weight of the concrete inside the pipe, each elastic support and vibration damping component 23 jointly provides vertical support force. When the pumping pressure suddenly changes and generates a horizontal impact force, the circumferentially distributed elastic support and vibration damping components 23 form a bidirectional pre-tightening constraint, enabling the vertical elbow 4 to generate a small elastic displacement within the design allowable range to release the impact stress. At the same time, the elastic restoring force quickly maintains geometric stability, significantly reducing the risk of flange interface loosening due to forced displacement and pipe wall cracking due to fatigue, thus ensuring the sealing performance and structural integrity of the pumping system.

[0028] In some embodiments, see Figure 3 , Figure 4 , Figure 5 The elastic support vibration damping assembly 23 includes an inner fixing rod 231 and an outer fixing rod 232 coaxially arranged and extending radially along the outer fixing ring 21. One end of the outer fixing rod 232 is connected to the outer fixing ring 21, and the other end of the outer fixing rod 232 is provided with a receiving hole 2321 extending axially. Inside the receiving hole 2321, a damping spring 233, a spring baffle 234 and an elastic damping sleeve 235 are sequentially arranged in the direction towards the inner fixing ring 22 and slide with it. One end of the inner fixing rod 231 is connected to the inner fixing ring 22, and the other end of the inner fixing rod 231 is inserted into the elastic damping sleeve 235 and abuts against the spring baffle 234.

[0029] Specifically, the outer fixing rod 232 can be a cylindrical or prismatic structure, arranged radially along the outer fixing ring 21. One end of the outer fixing rod 232 can be connected to the outer fixing ring 21 by means of threads, bolts or welding. The other end of the outer fixing rod 232 is located in the annular space 24 and has a cylindrical receiving hole 2321 extending along its axial direction. The damping spring 233, the spring baffle 234 and the elastic damping sleeve 235 are sequentially installed in the receiving hole 2321 from the inside to the outside.

[0030] The damping spring 233 can be compressed and deformed axially along the receiving hole 2321, with one end abutting the bottom of the receiving hole 2321 and the other end abutting the spring baffle 234; the outer edge of the spring baffle 234 slides against the inner wall of the receiving hole 2321, allowing it to slide back and forth axially along the receiving hole 2321. The elastic damping sleeve 235 can be made of polyurethane, rubber, or metal-rubber composite sleeve, and has radial elastic deformation capability. Its outer wall is tightly fitted with the inner wall of the receiving hole 2321 to provide axial positioning, and its inner wall covers the outer surface of the inner fixing rod 231 and forms an elastic contact surface.

[0031] The inner fixing rod 231 is a cylindrical structure, located within the annular space 24 and coaxially arranged with the outer fixing rod 232. One end of the inner fixing rod 231 can be fixedly connected to the inner fixing ring 22 by thread, pin, or welding, while the other end passes through the inner hole of the elastic damping sleeve 235, inserts into the receiving hole 2321, and abuts against the spring baffle 234. When the inner fixing ring 22 is subjected to external impact, the inner fixing rod 231 pushes the spring baffle 234 to compress the damping spring 233, while the elastic damping sleeve 235 provides radial damping and shear deformation, converting vibration energy into heat energy dissipation, forming a composite damping effect in both vertical and horizontal directions.

[0032] After the elastic support vibration damping assembly 23 is assembled, the gap between the outer fixing rod 232 and the inner fixing ring 22 along the axial direction of the outer fixing rod 232 is configured to be smaller than the axial length of the elastic damping sleeve 235, so as to form an axial limiting structure to prevent the elastic damping sleeve 235 from moving axially and dislodging from the receiving hole 2321 under vibration conditions. As another embodiment, a retaining ring that abuts against the end face of the elastic damping sleeve 235 can also be provided at the opening end of the receiving hole 2321. The retaining ring axially limits the elastic damping sleeve 235 to prevent it from dislodging from the receiving hole 2321 due to vibration.

[0033] In this embodiment, the elastic support vibration damping component 23 has an inner fixing rod 231 and an outer fixing rod 232 forming a sleeve-type structure, integrating the vibration damping spring 233 and the elastic vibration damping sleeve 235 on the same axis. This results in a compact structure with clearly defined force distribution. The inner fixing rod 231 and outer fixing rod 232 primarily provide vertical support, while the vibration damping spring 233 primarily provides horizontal elastic support and vibration buffering to absorb high-frequency vibration energy. The elastic vibration damping sleeve 235 simultaneously provides horizontal and vertical shear stiffness and micro-amplitude vibration to absorb low-frequency vibration energy. Together, they achieve multi-dimensional vibration damping of the vertical elbow 4. This elastic support vibration damping component 23 can be modified by replacing the vibration damping spring 233 with different stiffnesses and the elastic vibration damping sleeve 235 with different hardnesses according to the pumping pressure level, adapting to different working conditions.

[0034] In some embodiments, see Figure 3 The outer fixing ring 21 is provided with a mounting hole 211 that extends radially through it, and the outer fixing rod 232 passes through the mounting hole 211 and is detachably connected to the outer fixing ring 21.

[0035] Specifically, the outer fixing ring 21 can be formed by a steel plate, with a radially penetrating mounting hole 211 on its side wall. The mounting hole 211 can be a round hole or a slotted hole, with its axis pointing towards the center of the outer fixing ring 21. The outer fixing rod 232 passes through the mounting hole 211 from the outer side wall of the outer fixing ring 21, with one end having a receiving hole 2321 facing the inner fixing ring 22, and the other end extending outward from the outer side of the outer fixing ring 21.

[0036] The outer fixing rod 232 and the outer fixing ring 21 can be detachably connected in the following ways: the outer wall of the outer fixing rod 232 is machined with external threads, and the inner wall of the mounting hole 211 is machined with internal threads to form a threaded connection; or a flange is provided on the outer wall of the outer fixing rod 232, and it is fastened to the outer wall of the outer fixing ring 21 by bolts; or a sliding sleeve is provided in the mounting hole 211, and the outer fixing rod 232 is fixed by radial set screws after sliding in.

[0037] The detachable connection between the outer fixing rod 232 and the outer fixing ring 21 facilitates on-site elastic support vibration damping components 23 and subsequent maintenance and replacement. When an elastic support vibration damping component 23 needs to be replaced due to long-term fatigue, it is not necessary to disassemble the entire outer fixing ring 21; simply loosening the connector allows for the separate removal of the outer fixing rod 232 and its associated vibration damping elements.

[0038] In some embodiments, see Figure 3 , Figure 5 , Figure 6 The outer fixing rod 232 can move axially and rotate circumferentially within the mounting hole 211. The mounting hole 211 has a relief groove 212 that communicates with it and passes through the outer fixing ring 21. The outer fixing rod 232 is fixed with a stop block 2322 that can pass through the relief groove 212. The outer fixing ring 21 has an anti-rotation groove 213 on the side facing the inner fixing ring 22, which is misaligned with the relief groove 212 along the circumference of the mounting hole 211. When the outer fixing rod 232 rotates to a preset angle, the stop block 2322 can be locked in the anti-rotation groove 213.

[0039] Specifically, the stop block 2322 can be a square protrusion fixed to the outer wall of the outer fixing rod 232. The stop block 2322 and the outer fixing rod 232 can be integrally formed or welded together. The inner wall of the mounting hole 211 is provided with a relief groove 212 communicating with it. The size of the relief groove 212 matches the size of the stop block 2322, allowing the outer fixing rod 232 to pass through the mounting hole 211 axially when the stop block 2322 and the relief groove 212 are aligned. On the inner wall of the outer fixing ring 21 facing the inner fixing ring 22, an anti-rotation groove 213 is formed around the circumference of the mounting hole 211. The anti-rotation groove 213 and the relief groove 212 are arranged in a staggered manner around the mounting hole 211. The anti-rotation groove 213 can be a recessed structure provided on the inner wall of the outer fixing ring 21; or two limiting blocks 25 are fixed on the inner wall of the outer fixing ring 21. The two limiting blocks 25 are arranged at intervals along the circumference of the outer fixing ring 21, and the anti-rotation groove 213 is formed between them. In this embodiment, there are two stop blocks 2322, symmetrically arranged on both sides of the outer fixing rod 232; there are also two clearance grooves 212, symmetrically arranged on both sides of the mounting hole 211; and there are also two anti-rotation grooves 213, symmetrically arranged on both sides of the mounting hole 211.

[0040] During installation, insert the outer fixing rod 232 into the mounting hole 211, and allow the inner fixing rod 231 to pass through the inner hole of the elastic damping sleeve 235 and insert into the receiving hole 2321, abutting against the spring baffle 234. Rotate the outer fixing rod 232 and align the stop block 2322 with the clearance groove 212. Continue to insert the outer fixing rod 232 inward, compressing the damping spring 233. After the stop block 232 passes through the clearance groove 212, rotate the outer fixing rod 232 to a preset angle, aligning the stop block 2322 with the anti-rotation groove 213. Remove the force on the outer fixing rod 232, and under the restoring force of the damping spring 233, the stop block 2322 is locked in the anti-rotation groove 213 and abuts against the outer fixing ring 21. At this time, the axial, radial, and circumferential directions of the outer fixing rod 232 are all restricted, achieving locking. During disassembly, rotate in the opposite direction to align the stop block 2322 with the clearance groove 212 to remove it.

[0041] Correspondingly, this structure enables the quick installation and removal of the external fixing rod 232, while the snap-fit ​​structure between the stop block 2322 and the anti-rotation groove 213 provides reliable anti-loosening capability under pump pipe vibration conditions, preventing the external fixing rod 232 from rotating out on its own under alternating loads.

[0042] In some embodiments, see Figure 3 , Figure 5 A rotating handle 236 is fixed to one end of the outer fixing rod 232 away from the inner fixing ring 22.

[0043] Specifically, the rotary handle 236 and the outer fixing rod 232 can be welded or bolted together. The rotary handle 236 can be a straight rod structure perpendicular to the outer fixing rod 232, or a ring structure coaxially arranged with the outer fixing rod 232. The position of the rotary handle 236 should avoid interference with the support system 1 to ensure sufficient lever arm during operation. The surface of the rotary handle 236 can be knurled or covered with a rubber sleeve to increase friction. When it is necessary to adjust the angle of the outer fixing rod 232 to lock or unlock the stop 2322, the operator holds the rotary handle 236 to apply torque, causing the outer fixing rod 232 and the stop 2322 to rotate.

[0044] Correspondingly, by setting a rotating handle 236, a point of force application is provided for the operator, significantly reducing the operating force required to rotate the outer fixing rod 232. The presence of the rotating handle 236 also makes the angular position of the outer fixing rod 232 visible, making it easy to check whether the stop block 2322 is correctly engaged in the anti-rotation groove 213, avoiding connection failure due to improper installation.

[0045] In some embodiments, see Figure 3 , Figure 4Both the outer fixing ring 21 and the inner fixing ring 22 are clamp structures. Specifically, the outer fixing ring 21 can be a split structure, consisting of two semicircular rings connected by bolts to form a complete circle. A flange or lug is provided at the joint of the semicircular rings, and they are secured with high-strength bolts. The inner fixing ring 22 also adopts a split structure, consisting of two semicircular rings. The inner wall of the semicircular rings can be lined with a rubber pad to increase friction with the surface of the vertical elbow 4. The joint of the semicircular rings is locked with bolts. The inner diameter of the inner fixing ring 22 can be selected according to the outer diameter of the vertical elbow 4, or adapted to different pipe diameters by increasing or decreasing the thickness of the inner lining. During installation, first, the two semicircular rings of the inner fixing ring 22 are wrapped around the outer wall of the vertical elbow 4 and locked. Then, the outer fixing ring 21 is fitted onto the outside of the inner fixing ring 22 and connected to the support system 1. Of course, other existing clamp structures can also be used for the outer fixing ring 21 and the inner fixing ring 22; this is not a limitation.

[0046] Correspondingly, the clamp structure allows for side assembly even when the vertical elbow 4 is already installed, without being limited by the space at the end of the vertical elbow 4. The clamp's adjustability accommodates a certain range of outer diameter errors in the vertical elbow 4 and facilitates partial disassembly during later inspection and maintenance without affecting the continuous operation of the pumping system.

[0047] In some embodiments, see Figure 1 , Figure 2 The support system 1 includes multiple vertically arranged support legs 11, which are evenly distributed along the circumference of the outer fixing ring 21. The lower end of each support leg 11 is used to fix it to the main building structure 3. The upper end of each support leg 11 is provided with a downwardly recessed support part 111 on the side facing the outer fixing ring 21. The outer fixing ring 21 is supported on the multiple support parts 111.

[0048] For example, the support system 1 includes four vertically arranged legs 11, which are made of angle steel, channel steel, or steel pipe. The four legs 11 are evenly distributed along the circumference of the outer fixing ring 21, and the lower ends of the legs 11 are fixed to the upper surface of the floor slab of the main building structure 3 by embedded parts, expansion bolts, or welding. The upper end of each leg 11 has a downwardly recessed support portion 111 machined on the side facing the center. The support portion 111 has a horizontal supporting bottom surface and a vertical limiting side surface. The bottom surface of the outer fixing ring 21 is supported on the supporting bottom surface of the four support portions 111, and the outer surface of the outer fixing ring 21 abuts against the limiting side surface of the four support portions 111, thereby using the four support portions 111 to provide axial support and radial limiting for the outer fixing ring 21.

[0049] Correspondingly, the support system 1 has a simple structure, and the support part 111 of the outrigger 11 provides stable support to the external fixing ring 21 and restricts its horizontal movement.

[0050] In some embodiments, see Figure 2 , Figure 3 An elastic damping pad 112 is provided between the outer fixing ring 21 and the support part 111.

[0051] Specifically, the elastic damping pad 112 can be made of vulcanized rubber, polyurethane, or rubber-steel sandwich pad, and its shape is consistent with the surface shape of the support part 111. The thickness of the elastic damping pad 112 can be 5-20mm. It is fixed to the support bottom surface and limiting side surface of the support part 111 by adhesive or bolts, or fixed to the bottom surface and outer side surface of the outer fixing ring 21, thereby forming a second damping barrier between the support system 1 and the damping system 2.

[0052] Correspondingly, the elastic damping pad 112 introduces an additional elastic layer between the support system 1 and the damping system 2, further blocking the transmission of high-frequency vibrations to the main building structure 3. This design has a particularly good attenuation effect on vertical high-frequency vibrations, reduces the dynamic reaction force at the connection between the support leg 11 and the main building structure 3, and reduces the risk of fatigue damage to the main building structure 3 under long-term vibration.

[0053] In some embodiments, see Figure 3 The inner wall of the outer fixing ring 21 is fixed with a reinforcing rib 214, which is supported on the support part 111.

[0054] Specifically, the reinforcing rib 214 is a rigid plate, with its lower end surface supported on the support portion 111 of the outrigger 11 or on the elastic damping pad 112. The reinforcing rib 214 may include multiple vertically arranged reinforcing plates, the positions of which correspond one-to-one with the support portion 111 of the outrigger 11, forming a force transmission path from top to bottom. The reinforcing rib 214 may also include a horizontally arranged annular plate, forming the lower reinforcing ring of the outer fixing ring 21.

[0055] Correspondingly, by setting the reinforcing ribs 214, the local stiffness and overall bending resistance of the outer fixing ring 21 are improved, preventing the outer fixing ring 21 from undergoing elliptical deformation or local buckling when bearing concentrated loads transmitted by the inner fixing ring 22. By directly guiding the load to the support portion 111 of the outrigger 11 through the reinforcing ribs 214, the force flow path is optimized, reducing the bending stress on the outer fixing ring 21, so that it mainly bears the axial compressive stress, thereby allowing the use of a thinner ring plate and reducing the overall weight.

[0056] In some embodiments, see Figure 2 Multiple outriggers 11 are detachably connected via retaining rings 12.

[0057] Specifically, the fixing ring 12 is a horizontally positioned annular tube or angle steel ring located in the middle of the support leg. Each support leg 11 has a positioning groove on its outer side in the middle, and the fixing ring 12 is engaged in this positioning groove to determine its vertical position. The fixing ring 12 can be designed as a split structure, consisting of two semicircular rings connected by bolts to form a complete circle. A flange or lug is provided at the joint of the semicircular rings, which are then secured with high-strength bolts.

[0058] Correspondingly, by setting a fixing ring 12 to connect multiple independent legs 11 into an integral space truss structure, the lateral stiffness and torsional resistance of the support system 1 are significantly enhanced, preventing individual legs 11 from becoming unstable or overturning under horizontal vibration loads. At the same time, the fixing ring 12 also applies a radially inward force to the multiple legs 11, so that the upper ends of the multiple legs 11 can clamp and fix the outer fixing ring 21, improving the robustness and reliability of the connection between the vibration damping system 2 and the support system 1.

[0059] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A vibration damping device for supporting vertical bends in concrete pump pipes, characterized in that, The system includes a support system (1) and a vibration damping system (2). The support system (1) is used to fix the main structure of the building (3). The vibration damping system (2) includes an outer fixing ring (21) fixed to the top of the support system (1), an inner fixing ring (22) provided in the outer fixing ring (21), and a plurality of elastic support vibration damping components (23) connected between the outer fixing ring (21) and the inner fixing ring (22). The inner fixing ring (22) is used to be detachably fixed and fitted on the vertical bend (4). The plurality of elastic support vibration damping components (23) are evenly distributed along the circumference of the outer fixing ring (21) and are used to provide vertical and horizontal elastic support for the inner fixing ring (22).

2. The vertical elbow support vibration damping device for concrete pump pipe according to claim 1, characterized in that, The elastic support vibration damping assembly (23) includes an inner fixing rod (231) and an outer fixing rod (232) coaxially arranged and extending radially along the outer fixing ring (21). One end of the outer fixing rod (232) is connected to the outer fixing ring (21), and the other end of the outer fixing rod (232) is provided with a receiving hole (2321) extending axially. The receiving hole (2321) is provided with a vibration damping spring (233), a spring baffle (234) and an elastic vibration damping sleeve (235) in sequence from the inside to the outside. One end of the inner fixing rod (231) is connected to the inner fixing ring (22), and the other end of the inner fixing rod (231) is inserted into the elastic vibration damping sleeve (235) and abuts against the spring baffle (234).

3. The vertical elbow support vibration damping device for concrete pump pipe according to claim 2, characterized in that, The outer fixing ring (21) is provided with a mounting hole (211) that runs through it radially. The outer fixing rod (232) passes through the mounting hole (211) and is detachably connected to the outer fixing ring (21).

4. The vertical elbow support vibration damping device for concrete pump pipe according to claim 3, characterized in that, The outer fixing rod (232) can move axially and rotate circumferentially within the mounting hole (211). The mounting hole (211) has a relief groove (212) that communicates with it and passes through the outer fixing ring (21). The outer fixing rod (232) is fixed with a stop block (2322) that can pass through the relief groove (212). The outer fixing ring (21) has an anti-rotation groove (213) on the side facing the inner fixing ring (22) that is misaligned with the relief groove (212) along the circumference of the mounting hole (211). When the outer fixing rod (232) rotates to a preset angle, the stop block (2322) can be locked in the anti-rotation groove (213).

5. The vertical elbow support vibration damping device for concrete pump pipe according to claim 4, characterized in that, A rotating handle (236) is fixed to the end of the outer fixing rod (232) away from the inner fixing ring (22).

6. The vertical elbow support vibration damping device for concrete pump pipe according to claim 1, characterized in that, Both the outer fixing ring (21) and the inner fixing ring (22) are clamp structures.

7. The vertical elbow support vibration damping device for concrete pump pipe according to claim 1, characterized in that, The support system (1) includes a plurality of vertically arranged legs (11), which are evenly distributed along the circumference of the outer fixing ring (21). The lower end of each leg (11) is used to fix it to the main building structure (3). The upper end of each leg (11) is provided with a downwardly recessed support part (111) on the side facing the outer fixing ring (21). The outer fixing ring (21) is supported on the plurality of support parts (111).

8. The vertical elbow support vibration damping device for concrete pump pipe according to claim 7, characterized in that, An elastic damping pad (112) is provided between the outer fixing ring (21) and the support part (111).

9. The vertical elbow support vibration damping device for concrete pump pipe according to claim 7, characterized in that, The inner wall of the outer fixing ring (21) is fixed with a reinforcing rib (214), which is supported on the support part (111).

10. The vertical elbow support vibration damping device for concrete pump pipe according to claim 7, characterized in that, The multiple legs (11) are detachably connected by a retaining ring (12).

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