A concrete distribution machine

Abstract

The utility model discloses a concrete distributing machine, including frame, guide pillar, rotary drive, pumping hard pipe and pumping hose, rotary drive fixedly arranged on the frame, and the guide pillar is connected on the rotary output end of rotary drive, pumping hard pipe fixedly arranged on the frame, and the first end of pumping hose is connected with pumping hard pipe and can relatively rotate, and the second end of pumping hose is connected with the guide pillar, the first end of pumping hose is connected with pumping hose through synchronous mechanism with the guide pillar, to drive the first end of pumping hose synchronous rotation with the guide pillar, the utility model relates to the field of concrete pouring, through setting up the synchronous structure between the guide pillar and pumping hose, make the guide pillar synchronous rotation under the action of rotary drive when rotating can drive the first end of pumping hose synchronous rotation, make pumping hose only occur integral rigid displacement in the guide pillar rotation process, ensure that pumping hose has no any distortion or relatively rotates, prolong its life.

Description

Technical Field

[0001] This utility model relates to the field of concrete pouring technology, specifically a concrete placing machine. Background Technology

[0002] In a trolley-type concrete casting system, a concrete placing boom is typically installed on the lining trolley to cast concrete at different locations. Existing technologies (such as CN206928953U) use a concrete placing boom whose piping system mainly consists of a rigid pipe feed assembly, a pumping hose connection assembly, and a discharge port. One end of the pumping hose is connected to the rigid pipe via a pipe clamp and a sealing ring; this connection structure is designed to form a simple rotating device, allowing relative rotation between the pumping hose and the rigid pipe. The other end of the pumping hose is connected to the discharge port on a telescopic rotating device via a pipe clamp and a sealing ring. Theoretically, when the telescopic rotating device drives the discharge port to rotate, it will cause one end of the pumping hose to rotate, which in turn causes the other end connected to the rigid pipe to rotate relative to it, thereby adjusting the final position of the discharge port and coordinating with the longitudinal movement of the concrete placing boom to complete the casting at different locations.

[0003] However, although the rigid pipe and pumping hose in the above structure are designed to rotate relative to each other, the rotational connection structure (pipe clamp and sealing ring) experiences significant resistance and uneven movement during actual operation. Furthermore, the rotary drive only rotates the guide column, which in turn rotates one end of the pumping hose, leaving the other end without any driving force. This results in frequent jamming at the connection point between the other end of the pumping hose and the rigid pipe. This jamming makes smooth relative rotation between the rigid pipe and the pumping hose difficult, effectively creating a near-rigid connection. When the telescopic rotation device drives the guide column and its outlet to rotate, this rigidity forces the pumping hose to undergo severe torsional deformation, rather than the intended smooth relative rotation at the connection point. This continuous and unexpected torsional deformation severely exacerbates wear and fatigue of the pumping hose, significantly shortening its service life and increasing equipment maintenance costs and downtime risks. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides a concrete placing boom that can effectively prevent the pumping hose from twisting and deforming during rotation, thus extending its service life.

[0005] To achieve the above objectives, this utility model provides a concrete placing boom, including a frame, guide columns, a rotary drive, a pumping rigid pipe and a pumping flexible pipe, wherein the rotary drive is fixedly mounted on the frame, and the guide columns are connected to the rotary output end of the rotary drive; The pumping rigid pipe is fixed on the frame, the first end of the pumping flexible hose is connected to the pumping rigid pipe and can rotate relative to it, and the second end of the pumping flexible hose is connected to the guide post. The guide post is connected to the first end of the pumping hose through a synchronization mechanism, so that the first end of the pumping hose rotates synchronously with the guide post.

[0006] In one embodiment, the synchronization mechanism includes a synchronization shaft, a first connecting component, and a second connecting component; The first end of the synchronous shaft is connected to the guide post through the first connecting component, and the second end of the synchronous shaft is connected to the first end of the pumping hose through the second connecting component.

[0007] In one embodiment, the first connecting assembly includes a drive column and a first connecting plate, a first end of the drive column is connected to the guide column, a second end of the drive column passes through the rotary drive and is connected to the first connecting plate, and a first end of the synchronous shaft is connected to the first connecting plate.

[0008] In one embodiment, the second connecting component includes a U-shaped clamp, a pad, and a bent connecting plate; The U-shaped clamp is straddling the upper side of the first end of the pumping hose, the pad is located on the lower side of the first end of the pumping hose, and the top of the pad is provided with an arc-shaped groove adapted to the pumping hose. The two ends of the U-shaped clamp are connected to the pad and the bent connecting plate, and the second end of the synchronous shaft is connected to the bent connecting plate.

[0009] In one embodiment, the mating surfaces of the U-shaped clamp and / or the pad with the pumping hose are provided with raised and recessed patterns.

[0010] In one embodiment, a rigid transfer pump pipe is fixedly provided at the first end of the pumping hose, and the transfer pump pipe is connected to the pumping hose and can rotate relative to it. The second connecting assembly includes a second connecting plate connected to the transfer pump pipe, and the second end of the synchronous shaft is connected to the second connecting plate.

[0011] In one embodiment, the number of synchronous shafts is two, and the two synchronous shafts are respectively located on both sides of the pumping hose.

[0012] In one embodiment, the pumping hose is connected to the pumping rigid tube via a rotating pump tube.

[0013] In one embodiment, the rotary pump tube includes a first tube body and a second tube body, with a first end of the first tube body connected to the pumping rigid tube and a second end of the second tube body connected to the pumping flexible tube. The second end of the first tube is embedded in the first end of the second tube and rotates with the first tube. The second end of the synchronous shaft is connected to the outer wall of the second tube through the second connecting assembly.

[0014] In one embodiment, the outer wall of the first tube is provided with a first annular groove, and the inner wall of the second tube is provided with a second annular groove corresponding to the first annular groove; The first annular groove and the corresponding second annular groove form a roller groove, and a roller is provided in the roller groove.

[0015] In one embodiment, a sealing structure is provided between the outer wall of the first tube and the inner wall of the second tube.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: 1. This utility model sets a synchronous structure between the guide post and the pumping hose, so that when the guide post rotates under the action of the rotary drive, it can drive the first end of the pumping hose to rotate synchronously, so that the pumping hose only undergoes overall rigid displacement during the rotation of the guide post, ensuring that the pumping hose itself does not twist or rotate relative to the guide post. 2. In the preferred embodiment of this utility model, a rigid transfer pump pipe is set at the first end of the pumping hose, and a synchronization mechanism is connected to the transfer pump pipe, so that the pumping hose and the transfer pump pipe form a rigid synchronous rotating body. When the guide column rotates to adjust the material placement position, the two rotate as a whole around the axis of the guide column, avoiding the problems of jamming and twisting and deformation of the pumping hose caused by the relative rotation of the rigid pipe and the pumping hose connection not being smooth. 2. In the preferred embodiment of this utility model, the pumping rigid pipe and the pumping flexible pipe are connected by rotating the pump pipe. This can also avoid the problems of jamming and twisting and deformation of the pumping flexible pipe caused by the relative rotation of the rigid pipe and the pumping flexible pipe. This can effectively extend the service life of the pumping flexible pipe. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the concrete placing boom in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the concrete placing boom in Embodiment 2 of this utility model; Figure 3 This is a schematic diagram of the concrete placing boom in Embodiment 3 of this utility model; Figure 4 This is a schematic diagram of the concrete placing boom in Embodiment 4 of this utility model; Figure 5 This is a cross-sectional view of the rotary pump tube in Embodiment 4 of this utility model.

[0019] Reference numerals: 1. Frame; 2. Guide column; 3. Rotary drive; 4. Pumping rigid pipe; 5. Pumping flexible hose; 6. Bracket; 7. Synchronous shaft; 8. Transmission column; 9. First connecting plate; 10. U-shaped clamp; 11. Pad plate; 12. Bending connecting plate; 13. Transfer pump pipe; 14. Second connecting plate; 15. Rotary pump pipe; 15. First pipe body 1501; Second pipe body 1502; Roller groove 1503; Roller 1504; Sealing structure 1505.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] Example 1 like Figure 1 The diagram shows a concrete placing boom disclosed in this embodiment, which mainly includes a frame 1, guide columns 2, a rotary drive 3, a pumping rigid pipe 4, and a pumping flexible hose 5. The rotary drive 3 is fixed to the first end of the frame 1 via a bracket 6. The bottom end of the guide column 2 is connected to the rotary output end of the rotary drive 3, and the guide column 2 tilts and extends in both directions on both sides of the frame 1 under the action of the rotary drive 3. The pumping rigid pipe 4 is fixed to the second end of the frame 1 via clamps or pipe clamps. The first end of the pumping rigid pipe 4 is connected to an external concrete pump pipe. The first end of the pumping flexible hose 5 is connected to the second end of the pumping rigid pipe 4 via conventional pipe clamps and sealing rings, meaning that the pumping flexible hose 5 and the pumping rigid pipe 4 can rotate relative to each other. The second end of the pumping flexible hose 5 is fixedly connected to the top end of the guide column 2 via clamps or pipe clamps, so that the second end of the pumping flexible hose 5 rotates with the guide column 2, thereby connecting with the grouting ports on both sides of the frame 1.

[0027] The guide post 2 is connected to the first end of the pumping hose 5 through a synchronization mechanism, which provides the driving force to the first end of the pumping hose 5 so that the first end of the pumping hose 5 will not get stuck when rotating relative to the pumping rigid pipe 4. That is, the pumping hose 5 rotates synchronously with the guide post 2. During this process, the pumping hose 5 only undergoes overall rigid displacement, without any twisting or relative rotation, thereby extending the service life of the pumping hose 5.

[0028] In this embodiment, the synchronization mechanism includes a synchronization shaft 7, a first connecting component and a second connecting component. The first end of the synchronization shaft 7 is fixedly connected to the guide post 2 through the first connecting component, and the second end of the synchronization shaft 7 is fixedly connected to the first end of the pumping hose 5 through the second connecting component.

[0029] In the specific implementation process, the first connecting component includes a transmission column 8 and a first connecting plate 9. The first end of the transmission column 8 is fixedly connected to the guide column 2 by bolts or welding. The second end of the transmission column 8 passes through the rotary drive 3 and is fixedly connected to the first connecting plate 9 by bolts or welding. The first end of the synchronous shaft 7 is welded with a first end plate, which is fixedly connected to the first connecting plate 9 by welding or bolts. Since the rotary drive 3 itself has a central through hole, this embodiment can directly improve upon the existing concrete placing boom by setting the first connecting plate 9 and the transmission column 8 to connect the transmission shaft and the guide column 2, thereby reducing costs.

[0030] In specific implementation, the second connecting assembly includes a U-shaped clamp 10, a pad 11, and a bent connecting plate 12. The U-shaped clamp 10 spans the upper side of the first end of the pumping hose 5, the pad 11 is located on the lower side of the first end of the pumping hose 5, and the top of the pad 11 has an arc-shaped groove adapted to the pumping hose 5. The bent connecting plate 12 is located on the lower side of the pad 11. The two ends of the U-shaped clamp 10 are fixedly connected to the pad 11 and the bent connecting plate 12 by bolts. The second end of the synchronous shaft 7 is welded with a second end plate, which is fixedly connected to the bent connecting plate 12 by welding or bolting. Preferably, the mating surfaces of the U-shaped clamp 10 and / or the pad 11 with the pumping hose 5 have raised and recessed patterns to increase friction and prevent relative rotation between the second connecting assembly and the pumping hose 5.

[0031] Example 2 like Figure 2 The image shows a concrete placing boom disclosed in this embodiment. Its implementation method is basically the same as that in Embodiment 1, except that: In this embodiment, the first end of the pumping hose 5 is fixed with a rigid transfer pump pipe 13 by a pipe clamp and a sealing ring. At the same time, the transfer pump pipe 13 is connected to the pumping rigid pipe 4 by a pipe clamp and a sealing ring. Since the transfer pump pipe 13 is rigid, the second connecting plate 14 welded to the bottom of the transfer pump pipe 13 can be directly used as the second connecting component. The second end plate on the synchronous shaft 7 can be fixedly connected to the second connecting plate 14 by welding or bolting.

[0032] In this embodiment, the concrete placing boom connects the transfer pump pipe 13 as the first end of the pumping hose 5 to the pumping rigid pipe 4. The second connecting component on the synchronization mechanism is connected to the transfer pump pipe 13, so that the pumping hose 5 and the transfer pump pipe 13 form a rigid synchronous rotating body. When the guide column 2 rotates to adjust the placing position, the two rotate as a whole around the axis of the guide column 2, avoiding the problems of jamming and twisting and deformation of the pumping hose 5 caused by the relative rotation of the rigid pipe and the pumping hose 5 not being smooth.

[0033] Example 3 This embodiment discloses a concrete placing boom, the implementation of which is basically the same as that of Embodiment 2, except that: in this embodiment, the second connecting plate 14 is fixedly sleeved on the transfer pump pipe 13 by welding or interference fit, and the number of synchronous shafts 7 is two, with the two synchronous shafts 7 located on both sides of the pumping hose, i.e. Figure 3 As shown. By arranging two synchronous shafts 7, the load distribution during the rotation of the intermediate pump pipe 13 driven by the synchronous mechanism is more uniform, thereby improving the service life of the synchronous mechanism.

[0034] Example 4 like Figure 4 The image shows a concrete placing boom disclosed in this embodiment. Its implementation method is basically the same as that in Embodiment 1, except that: The pumping hose 5 and the pumping rigid pipe 4 are rotatably connected by the rotating pump pipe 15, thereby reducing the resistance between the pumping hose 5 and the pumping rigid pipe 4. This makes the process of the synchronizing mechanism driving the first end of the pumping hose 5 to rotate more smoothly. It can also avoid the problems of jamming and twisting and deformation of the pumping hose 5 caused by the relatively unsmooth rotation at the connection between the rigid pipe and the pumping hose 5, and can effectively extend the service life of the pumping hose 5.

[0035] refer to Figure 5 In this embodiment, the rotary pump tube 15 includes a first tube body 1501 and a second tube body 1502. The first end of the first tube body 1501 is fixedly connected to the pumping rigid tube 4 via a pipe clamp and a sealing ring. The second end of the second tube body 1502 is fixedly connected to the pumping flexible tube 5 via a pipe clamp and a sealing ring. The second end of the first tube body 1501 is embedded in the first end of the second tube body 1502 and rotates with the first tube body 1501. The second end of the synchronous shaft 7 is connected to the outer wall of the second tube body 1502 or the pumping flexible tube 5 via a second connecting assembly. When the second end of the synchronous shaft 7 is connected to the outer wall of the second tube body 1502 via the second connecting assembly, the second connecting assembly adopts the same implementation method as in Embodiment 2; when the second end of the synchronous shaft 7 is connected to the pumping flexible tube 5 via the second connecting assembly, the second connecting assembly adopts the same implementation method as in Embodiment 1.

[0036] In the specific implementation process, the outer wall of the first tube 1501 is provided with a first annular groove, and the inner wall of the second tube 1502 is provided with a second annular groove corresponding to the first annular groove. When the second end of the first tube 1501 is inserted into the first end of the second tube 1502, the first annular groove and the corresponding second annular groove form a roller groove 1503. The roller groove 1503 is provided with rollers 1504, such as ball bearings, needle rollers, cylindrical rollers, etc. The rollers 1504 are axially and circumferentially constrained in the roller groove 1503 to ensure that they generate pure rolling friction when the first tube 1501 and the second tube 1502 rotate relative to each other. That is, the sliding friction of the original pumping hard pipe 4-pumping hose 5 connection is transformed into rolling friction between the internal tubes, thereby greatly reducing the rotational resistance, achieving smooth rotation, and avoiding the twisting and deformation of the pumping hose 5. Preferably, the number of roller grooves 1503 is two or more, and each roller groove 1503 is distributed at intervals along the axial direction of the rotary pump pipe 15 to ensure smooth relative rotation between the first pipe body 1501 and the second pipe body 1502.

[0037] It is worth noting that since both the first tube 1501 and the second tube 1502 are rigid, it is not possible to place the roller 1504 on the first annular groove before installing the second tube 1502 in practice. Therefore, in practical application, a through hole is first opened on the second tube 1502 corresponding to the position of the second annular groove. Then, the first tube 1501 is inserted into the second tube 1502, and after aligning the first annular groove with the second annular groove, the roller 1504 is placed into the roller groove 1503 through the through hole. Finally, a plug is welded to the through hole to complete the assembly of the rotary pump tube 15.

[0038] In the specific implementation process, a sealing structure 1505, i.e., a sealing ring, is provided between the outer wall of the first pipe body 1501 and the inner wall of the second pipe body 1502. Specifically, the sealing structure 1505 is set between the second end of the first pipe body 1501 and the roller groove 1503 to prevent concrete mortar from flowing into the roller groove 1503 through the gap between the first pipe body 1501 and the second pipe body 1502, thus affecting the rotation of the roller 1504.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the scope of protection of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A concrete placing boom, characterized in that, It includes a frame, guide posts, a rotary drive, a pumping rigid pipe and a pumping flexible pipe. The rotary drive is fixed on the frame, and the guide posts are connected to the rotary output end of the rotary drive. The pumping rigid pipe is fixed on the frame, the first end of the pumping flexible hose is connected to the pumping rigid pipe and can rotate relative to it, and the second end of the pumping flexible hose is connected to the guide post. The guide post is connected to the first end of the pumping hose through a synchronization mechanism, so that the first end of the pumping hose rotates synchronously with the guide post.

2. The concrete placing boom according to claim 1, characterized in that, The synchronization mechanism includes a synchronization shaft, a first connecting component, and a second connecting component; The first end of the synchronous shaft is connected to the guide post through the first connecting component, and the second end of the synchronous shaft is connected to the first end of the pumping hose through the second connecting component.

3. The concrete placing boom according to claim 2, characterized in that, The first connecting assembly includes a transmission column and a first connecting plate. The first end of the transmission column is connected to the guide column, and the second end of the transmission column passes through the rotary drive and is connected to the first connecting plate. The first end of the synchronous shaft is connected to the first connecting plate.

4. The concrete placing boom according to claim 2 or 3, characterized in that, The second connecting component includes a U-shaped clamp, a pad, and a bent connecting plate; The U-shaped clamp is straddling the upper side of the first end of the pumping hose, the pad is located on the lower side of the first end of the pumping hose, and the top of the pad is provided with an arc-shaped groove adapted to the pumping hose. The two ends of the U-shaped clamp are connected to the pad and the bent connecting plate, and the second end of the synchronous shaft is connected to the bent connecting plate.

5. The concrete placing boom according to claim 4, characterized in that, The U-shaped clamp and / or the mating surface of the pad that mates with the pumping hose is provided with a textured pattern.

6. The concrete placing boom according to claim 2 or 3, characterized in that, The first end of the pumping hose is fixedly provided with a rigid transfer pump pipe, which is connected to the pumping hose and can rotate relative to it. The second connecting assembly includes a second connecting plate connected to the transfer pump pipe, and the second end of the synchronous shaft is connected to the second connecting plate.

7. The concrete placing boom according to claim 6, characterized in that, The number of synchronous shafts is two, and the two synchronous shafts are located on both sides of the pumping hose.

8. The concrete placing boom according to claim 2 or 3, characterized in that, The pumping hose and the pumping rigid pipe are connected by a rotating pump pipe.

9. The concrete placing boom according to claim 8, characterized in that, The rotary pump tube includes a first tube body and a second tube body. The first end of the first tube body is connected to the pumping rigid tube, and the second end of the second tube body is connected to the pumping flexible tube. The second end of the first tube is embedded in the first end of the second tube and rotates with the first tube. The second end of the synchronous shaft is connected to the outer wall of the second tube through the second connecting component.

10. The concrete placing boom according to claim 9, characterized in that, The outer wall of the first tube is provided with a first annular groove, and the inner wall of the second tube is provided with a second annular groove corresponding to the first annular groove; The first annular groove and the corresponding second annular groove form a roller groove, and a roller is provided in the roller groove.

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