Pumping concrete distributing device
By designing structures such as a spiral placing pipe, counterweight arm, angle adjustment mechanism, and material guide chute, the problem of segregation in pumped concrete placing devices during long-distance transportation was solved, achieving uniform concrete distribution and improving construction quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HUANNENG DESIGN INST
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-24
AI Technical Summary
Existing pumped concrete placing devices are prone to segregation during long-distance transport, resulting in uneven internal structure of concrete, which affects construction quality and the safety and durability of buildings.
Design a pumped concrete placing device that includes a spiral placing pipe, a counterweight arm, an angle adjustment mechanism, a corrugated pipe, and a guide chute. By changing the concrete flow path, enhancing stability and flexibility, it reduces segregation and ensures uniform concrete distribution.
It effectively reduces concrete segregation, improves construction quality and the safety and durability of buildings, and enhances the flexibility and stability of the concrete placing device.
Smart Images
Figure CN224161440U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of concrete placing, and specifically relates to a pumped concrete placing device. Background Technology
[0002] In the field of modern civil engineering, pumped concrete technology has become one of the mainstream methods of concrete construction due to its high efficiency and flexibility. This technology uses a concrete pump to transport concrete over long distances along a pipeline and then uses a placing device to precisely pour the concrete to the designated location, which greatly improves construction efficiency and reduces the intensity of manual labor. It is especially suitable for large-scale projects such as buildings, bridges, and tunnels that require large volumes of concrete and have complex construction environments.
[0003] During the pumping and pouring of concrete, the concrete needs to travel through long-distance pipelines from the concrete pumping station to the pouring site. These pipelines are typically composed of multiple connected sections, with a total length reaching tens or even hundreds of meters. During transport, the concrete flows continuously along the inner wall of the pipeline under pumping pressure. Because concrete is a composite material composed of various components such as cement, sand, aggregate, water, and admixtures, the physical properties of each component differ, such as density and particle size. During long-distance transport, these differences cause relative movement between the components within the concrete.
[0004] When concrete reaches the end of the delivery pipeline, it typically needs to be discharged from a long, tubular placing pipe to achieve precise concrete distribution. However, in practical engineering applications, to meet the requirements of construction technology and spatial layout, the placing pipe is often arranged vertically. This vertical arrangement of the placing pipe makes the concrete more significantly affected by gravity as it flows out, making it easier for components such as coarse aggregate, fine aggregate, and cement paste in the concrete to separate, a phenomenon known as segregation.
[0005] Segregated concrete, after being poured, has an uneven internal structure, which leads to uneven distribution of concrete strength, reduces the overall load-bearing capacity of the structure, and increases the risk of quality problems such as cracks and deformation during use, seriously affecting the safety and durability of the building. Utility Model Content
[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a concrete pumping and placing device to solve the problem of segregation that easily occurs when concrete is pumped and placed by existing placing devices. This is of great significance for improving the construction quality of civil engineering projects and ensuring the safe and stable operation of buildings.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] A concrete pumping and placing device includes a fixed frame with several legs at its lower part; a base is provided on the fixed frame, and a boom is pivotally connected to one side of the base. The boom includes a first boom, a second boom pivotally connected to one end of the first boom, and a third boom pivotally connected to one end of the second boom. Hydraulic cylinders are connected between the base and the first boom, the first boom and the second boom, and the second boom and the third boom for angle adjustment between the first boom, the second boom, and the third boom. The device also includes a feeding pipe, which includes several fixed pipes and movable pipes. The fixed pipes are parallel to the first boom, the second boom, or the third boom. The movable pipes are located at the joints of the boom and are connected to the fixed pipes via rotary joints. A placing pipe, which is a spiral pipe structure, is connected to the movable pipe at the end of the third boom via a rotary joint.
[0009] Furthermore, a counterweight arm is connected to one side of the base, and the counterweight arm is provided with several counterweight blocks.
[0010] Furthermore, an angle adjustment mechanism is provided between the fixed frame and the base. The angle adjustment mechanism includes a housing, the lower part of which is fixedly mounted on the fixed frame. A worm gear is rotatably connected inside the housing. One end of the worm gear is provided with a driving device, which can be manually or electrically driven. A worm wheel is engaged on one side of the worm gear. The worm wheel is rotatably connected to the housing. The upper end of the worm wheel is connected to a flange through a sleeve. The lower part of the base is connected to the flange. A section of the feeding pipe is located inside the sleeve.
[0011] Furthermore, the end of the fabric tube is provided with a corrugated tube to extend the fabric coverage of the fabric tube.
[0012] Furthermore, the upper end of the corrugated pipe is provided with an upper end plate, which is connected to the material distribution pipe, and the lower end of the corrugated pipe is provided with a lower end plate. Telescopic mechanisms are provided on both sides of the upper end plate and the lower end plate. The telescopic mechanisms are hydraulic cylinders or electric cylinders, which are used to adjust the telescopic length of the corrugated pipe in real time during the pouring process.
[0013] Furthermore, the lower end plate is provided with a material guide chute, which is arranged at an incline.
[0014] Furthermore, the lower end plate is provided with an arc-shaped guide rail at its lower part, and a connecting plate is fixedly connected to the upper part of the material guide chute. The connecting plate is provided with several sliders, and the sliders are slidably connected to the arc-shaped guide rail.
[0015] The beneficial effects of this utility model are:
[0016] 1) By designing the placing pipe as a spiral structure, this utility model changes the flow path of concrete, causing it to descend in a spiral shape within the spiral pipe. This allows the coarse and fine aggregates, cement paste, and other components in the concrete to have more time to mix and distribute evenly during the spiral motion, reducing segregation caused by speed differences.
[0017] 2) By setting a counterweight arm and counterweight block on one side of the base, the stability of the fabric-laying device is enhanced, especially when laying fabric over long distances.
[0018] 3) An angle adjustment mechanism is set between the fixed frame and the base, which allows the boom to rotate, expands the fabric spreading range of the fabric spreading device, and improves the flexibility of the fabric spreading device.
[0019] 4) A corrugated pipe is installed at the end of the placing pipe, and the two ends of the corrugated pipe are connected by a telescopic mechanism, which not only extends the placing range of the placing pipe, but also facilitates precise control of the concrete drop height, ensuring the uniformity and compactness of the concrete pouring process.
[0020] 5) By setting a rotatable guide chute at the lower part of the lower end plate, not only is the segregation phenomenon suppressed, but the material distribution range of the material distribution device is further increased, and the material distribution flexibility of the material distribution device is improved. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of a concrete pumping and placing device according to the present invention.
[0022] Figure 2 This is an assembly diagram of the fixed frame, base, and angle adjustment mechanism.
[0023] Figure 3 This is a schematic diagram of the inside of the angle adjustment mechanism.
[0024] Figure 4 This is a partial schematic diagram of the base.
[0025] Figure 5 This is a schematic diagram of the fabric tube.
[0026] Figure 6 This is a schematic diagram of the assembly of the corrugated pipe and the material chute.
[0027] Figure 7 This is a schematic diagram of a material guide chute.
[0028] In the diagram, 1. Fixed frame; 11. Outrigger; 2. Base; 21. First boom; 22. Second boom; 23. Third boom; 24. Hydraulic cylinder; 25. Counterweight boom; 26. Counterweight block; 3. Angle adjustment mechanism; 31. Housing; 32. Worm gear; 33. Worm wheel; 4. Feed pipe; 41. Fixed pipe; 42. Movable pipe; 5. Material distribution pipe; 6. Corrugated pipe; 61. Upper end plate; 62. Lower end plate; 63. Telescopic mechanism; 64. Arc-shaped guide rail; 7. Material guide chute; 71. Connecting plate; 72. Slider. Detailed Implementation
[0029] The following will be combined with the appendix Figures 1-7The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0030] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.
[0031] like Figure 1 , Figure 2 As shown, a concrete pumping and placing device includes a fixed frame 1 with several legs 11 at its lower part; a base 2 is provided on the fixed frame 1, and a boom is pivotally connected to one side of the base 2. The boom includes a first boom 21, a second boom 22 pivotally connected to one end of the first boom 21, and a third boom 23 pivotally connected to one end of the second boom 22. Hydraulic cylinders 24 are connected between the base 2 and the first boom 21, the first boom 21 and the second boom 22, and the second boom 22 and the third boom 23, for connecting the first boom 21, the second boom 22, and the third boom 23. The angle adjustment between the third boom 23 allows for adjustment of the fabric placement range; it also includes a feeding pipe 4, which comprises several fixed pipes 41 and movable pipes 42. The fixed pipes 41 are parallel to the first boom 21, the second boom 22, or the third boom 23. The movable pipes 42 are located at the joints of the booms and are connected to the fixed pipes 41 via rotary joints. The connection method between the booms and the feeding pipe 4 adopts the common method used in existing fabric placement devices and will not be described in detail. A fabric placement pipe 5 is connected to the movable pipe 42 at the end of the third boom 23 via a rotary joint, such as... Figure 5 As shown, the placing pipe 5 is a spiral pipe structure. The spiral pipe 5 changes the flow path of the concrete, causing it to descend in a spiral shape inside the spiral pipe. The coarse and fine aggregates, cement paste and other components in the concrete have more time to mix and distribute evenly during the spiral movement, reducing segregation caused by speed differences.
[0032] like Figure 4 As shown, a counterweight arm 25 is connected to one side of the base 2. The counterweight arm 25 is provided with a number of counterweight blocks 26. The number of counterweight blocks 26 is selected according to the unfolded length of the arm. The counterweight blocks 26 enhance the stability of the fabric-laying device.
[0033] like Figure 2 , Figure 3 As shown, an angle adjustment mechanism 3 is provided between the fixed frame 1 and the base 2. The angle adjustment mechanism 3 includes a housing 31, the lower part of which is fixedly installed on the fixed frame 1. A worm gear 32 is rotatably connected inside the housing 31. One end of the worm gear 32 is provided with a driving device, which can be manually driven (such as a handwheel) or electrically driven (such as a motor). A worm wheel 33 is engaged on one side of the worm gear 32 and is rotatably connected to the housing 31. The upper end of the worm wheel 33 is connected to a flange (not shown in the figure) through a sleeve. The lower part of the base 2 is connected to the flange. A section of the feeding pipe 4 is set inside the sleeve. When it is necessary to change the concrete placement position, the worm gear 32 can be driven to rotate by the driving device. The worm gear 32 drives the worm wheel to rotate, and the worm wheel 33 drives the base 2 to rotate, thereby causing the boom to rotate at a certain angle, expanding the placement range of the concrete placing device and improving the flexibility of the concrete placing device.
[0034] like Figure 5 As shown, the end of the concrete placing pipe 5 is provided with a corrugated pipe 6, which is used to extend the concrete placing range of the concrete placing pipe 5. When pouring concrete for irregularly shaped walls, the corrugated pipe 6 can freely expand, contract and bend according to actual needs, so as to evenly distribute the concrete in various parts of the wall, ensuring construction quality and efficiency.
[0035] like Figure 6 As shown, the upper end of the corrugated pipe 6 is provided with an upper end plate 61, which is connected to the placing pipe 5. The lower end of the corrugated pipe 6 is provided with a lower end plate 62. The upper end plate 61 and the lower end plate 62 are provided with telescopic mechanisms 63 on both sides. The telescopic mechanism 63 is a hydraulic cylinder or an electric cylinder, which is used to adjust the telescopic length of the corrugated pipe 6 in real time during the pouring process, so as to accurately control the drop height of concrete and ensure the uniformity and compactness of the concrete pouring process.
[0036] like Figure 6 As shown, the lower end plate 62 is provided with a material guide chute 7 at its lower part. The material guide chute 7 is arranged at an inclination, which plays a role in buffering and guiding the concrete, and further suppresses the occurrence of segregation.
[0037] like Figure 7 As shown, the lower end plate 62 is provided with an arc-shaped guide rail 64 at its lower part, and a connecting plate 71 is fixedly connected to the upper part of the material guide chute 7. Several sliders 72 are provided on the connecting plate 71. The sliders 72 are slidably connected to the arc-shaped guide rail 64, which realizes the rotation of the material guide chute 7, further increases the material distribution range of the material distribution device, and improves the flexibility of the material distribution device.
[0038] The above content is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the scope defined by the structure of the utility model, they should all fall within the protection scope of this utility model.
Claims
1. A concrete pumping and placing device, comprising a fixed frame, the lower part of which is provided with a plurality of legs; a base is provided on the fixed frame, and a boom is pivotally connected to one side of the base, the boom comprising a first boom, one end of which is pivotally connected to a second boom, and one end of which is pivotally connected to a third boom; hydraulic cylinders are connected between the base and the first boom, the first boom and the second boom, and the second boom and the third boom, for adjusting the angles between the first boom, the second boom, and the third boom; further comprising a feeding pipe, the feeding pipe comprising a plurality of fixed pipes and movable pipes, the fixed pipes being parallel to the first boom, the second boom, or the third boom, the movable pipes being disposed at the joints of the booms, and the movable pipes being connected to the fixed pipes via swivel joints; characterized in that… A fabric distribution tube is connected to the movable tube at the end of the third boom via a rotary joint. The fabric distribution tube has a spiral tube structure.
2. The concrete pumping and placing device according to claim 1, characterized in that, A counterweight arm is connected to one side of the base, and the counterweight arm is provided with several counterweight blocks.
3. The concrete pumping and placing device according to claim 1, characterized in that, An angle adjustment mechanism is provided between the fixed frame and the base. The angle adjustment mechanism includes a housing, the lower part of which is fixedly installed on the fixed frame. A worm gear is rotatably connected inside the housing. One end of the worm gear is provided with a driving device, which can be manually or electrically driven. A worm wheel is engaged on one side of the worm gear and is rotatably connected to the housing. The upper end of the worm wheel is connected to a flange through a sleeve. The lower part of the base is connected to the flange. A section of the feeding pipe is set inside the sleeve.
4. A concrete pumping and placing device according to any one of claims 1-3, characterized in that, The end of the fabric tube is provided with a corrugated tube to extend the fabric coverage area of the fabric tube.
5. A concrete pumping and placing device according to claim 4, characterized in that, The corrugated pipe has an upper end plate at its upper end, which is connected to the material distribution pipe. The corrugated pipe has a lower end plate at its lower end. Telescopic mechanisms are provided on both sides of the upper and lower end plates. The telescopic mechanisms are hydraulic cylinders or electric cylinders, which are used to adjust the telescopic length of the corrugated pipe in real time during the pouring process.
6. A concrete pumping and placing device according to claim 5, characterized in that, The lower end plate is provided with a material guide chute, which is arranged at an incline.
7. A concrete pumping and placing device according to claim 6, characterized in that, The lower end plate is provided with an arc-shaped guide rail at its lower part, and a connecting plate is fixedly connected to the upper part of the material guide chute. The connecting plate is provided with several sliders, and the sliders are slidably connected to the arc-shaped guide rail.