Fixing device for vertical concrete pump pipe

Abstract

The utility model discloses a fixing device for a vertical concrete pump pipe. The fixing device comprises a horn mouth fixed at a hole position, a plurality of fastening steel plates arranged in the horn mouth, and bolts and nuts for fixing the steel plates, notches for accommodating the pump pipe are formed in the centers of the fastening steel plates, the bolts penetrate through the notches of the pump pipe, enter the horn mouth from the outer side of the horn mouth and are connected with the fastening steel plates, the fastening steel plates clamp or loosen the pump pipe along with movement of the bolts, the nuts are arranged on the outer side of the horn mouth, and the bolts are fastened through the nuts. The pump pipe is uniformly extruded and fixed; the problem that the pump pipe is difficult to fix is solved, the pump pipe is not prone to being damaged, the pump pipe fixing device is not prone to loosening due to the arrangement of the rubber strip and the trapezoidal gasket, and vibration of the pump pipe in the concrete pumping process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a fixing device for a vertical concrete pump pipe. Background Technology

[0002] Vertical concrete pumping technology is widely used in the construction of high-rise or super high-rise buildings. Concrete is transported to higher elevations via vertical pump pipes for pouring concrete components. During construction, the pump pipes are laid vertically from the bottom to the top, passing through multiple pre-drilled holes and being secured. The firmness of the pump pipe fixation directly affects the construction quality, especially in high-rise buildings, where vibration and shaking of the pump pipes can lead to a decline in concrete pouring quality. Therefore, ensuring the stability of the pump pipes is crucial.

[0003] The commonly used fixing method is to use wooden wedges. Wooden wedges are typically placed at the edge of pre-drilled holes (such as floor openings or scaffold gaps) to fill the gap between the hole and the pump pipe, preventing the pump pipe from moving up and down. The wedge shape makes it easy to insert into the gap, and it expands by being tapped, increasing the friction between it and the pump pipe to achieve a fixing effect. However, this fixing method has significant drawbacks: First, the wooden wedges can easily squeeze the edge of the pre-drilled hole during expansion, leading to structural damage and potentially causing pipe blockage or bursting, affecting the flow efficiency of concrete. Second, the wooden wedge fixing method has poor stability and is prone to loosening during use, failing to meet the needs of long-term operation. Furthermore, the connection points must be inspected before each pumping operation, increasing the complexity and risk of construction.

[0004] Therefore, there is an urgent need for a vertical pump pipe fixing device that is stable, not easy to loosen, and not easy to squeeze the pump pipe. Utility Model Content

[0005] The purpose of this application is to solve the problems in the existing technology of fixing vertical concrete pump pipes, which are prone to loosening and require checking the bolts for looseness before each pour. Therefore, this utility model provides a fixing device for vertical concrete pump pipes. By fixing the pump pipe to the flared opening in the pre-embedded hole through a specific fixing method, the pump pipe is fixed, which has the advantages of tight fixing effect, not easy to loosen, reduced vibration, and protection of pipeline.

[0006] To achieve the above objectives, in a first aspect, this utility model provides a fixing device for a vertical concrete pump pipe, including a flared opening fixed at the hole position, a plurality of fastening steel plates disposed within the flared opening, and bolts and nuts for fixing the fastening steel plates;

[0007] The plurality of fastening steel plates have a notch at their center to accommodate the pump pipe, through which the pump pipe passes;

[0008] The bolt passes through the outside of the flared opening and enters the inside of the flared opening, and connects to the fastening steel plate. The bolt drives the fastening steel plate to move, clamping or loosening the pump pipe.

[0009] The nut is located on the outside of the flared opening and is used to fasten the bolt.

[0010] It should be noted that in existing technologies, multiple wooden wedges are typically placed between the hole and the pump pipe. These wedges compress the pump pipe, securing it within the hole. However, this compression is often uneven, easily leading to deformation of the concrete pump pipe and potentially even breakage of the surrounding concrete. The technical solution of this application, however, fixes a rectangular flared opening within the hole, and then secures the pump pipe through the flared opening to it using fastening steel plates. In this fixing method, the pump pipe is accommodated at the notch in the center of multiple fastening steel plates, resulting in more even force distribution on the sides of the pump pipe and reducing its susceptibility to damage. Furthermore, the pump pipe is clamped using bolts and nuts, making this solution less prone to loosening compared to the existing method of fixing with wooden wedges.

[0011] In some embodiments, a trapezoidal washer is provided between the nut and the outer side of the flared opening; the trapezoidal washer is thicker at the bottom and thinner at the top, which compensates for the inclination of the outer side of the flared opening, so that the nut can be set vertically and the bolt threaded to the nut can move horizontally.

[0012] This design, with its trapezoidal washer compensating for the inclination of the outer wall of the flared opening, allows the nut to be set vertically. Since the bolt is screwed into the nut, it can be set horizontally. When the nut is tightened, it moves the bolt horizontally, thereby allowing the fastening steel plate to clamp and loosen the pump pipe horizontally, resulting in a more secure fixation of the pump pipe. Secondly, the trapezoidal washer increases the frictional force of the nut's rotation, making it less prone to loosening after tightening and enhancing the pump pipe's fixation ability.

[0013] In some embodiments, a rubber strip is provided between the pump pipe and the fastening steel plate, and the rubber strip is engaged at the notch position.

[0014] The rubber strip has an anti-slip function and a certain deformation capacity. This design can prevent the pump tube from sliding, making the pump tube more compact and fixed, and reducing the shaking of the pump tube.

[0015] In some embodiments, a portion of the rubber strip is embedded within the fastening steel plate, while a portion protrudes from the fastening steel plate.

[0016] An installation groove for accommodating a rubber strip is formed on the surface of the notch on the fastening steel plate. Part of the rubber strip is embedded in the installation groove, and part of it protrudes from the fastening steel plate, thus fixing the rubber strip to the fastening steel plate. When the fastening steel plate approaches the pump pipe, it squeezes the rubber strip, so that the rubber strip can play a role in anti-slip and deformation.

[0017] In some embodiments, a plurality of bolts are provided on one side of the fastening steel plate, and the plurality of bolts are symmetrically arranged on the fastening steel plate about the center of the pump pipe.

[0018] This configuration increases the squeezing force of the fastening steel plate on the pump pipe through multiple bolts, thereby making the pump pipe more secure. The bolts are symmetrically arranged so that the fastening steel plate squeezes the surface of the pump pipe more evenly.

[0019] In some embodiments, the bolt is connected to the fastening plate by welding.

[0020] In some embodiments, there are two fastening steel plates, each with a semi-circular notch, and two bolts are provided at the end of the fastening steel plate away from the notch, the two bolts being symmetrically arranged about the center of the pump pipe.

[0021] This design allows the two fastening steel plates, positioned close to each other at the center, to form a circular notch. The pump tube passes through this notch and is evenly compressed. Furthermore, the symmetrically arranged bolts apply pressure to the fastening steel plates more evenly, ensuring the plates clamp the pump tube securely. This design balances structural cost and pump tube tightness, using fewer fastening steel plates, making it easier to manufacture and reducing cost while guaranteeing pump tube stability.

[0022] In some embodiments, the nut is a double-nut, opposing nut. This arrangement makes it less prone to loosening.

[0023] In some implementations, the curvature of the notch matches the shape of the pump tube.

[0024] This increases the contact area between the notch and the pump pipe.

[0025] In summary, compared with the prior art, the beneficial effects of this utility model are as follows: the pump pipe is clamped by multiple fastening steel plates, and the fastening steel plates are provided with notches that match the shape of the outer surface of the pump pipe, so as to uniformly compress and fix the pump pipe; this solves the problem of difficult pump pipe fixing and is less likely to cause damage to the pump pipe; on the other hand, the setting of rubber strips and trapezoidal gaskets increases the friction of the pump pipe, making the pump pipe fixing device less likely to loosen, and the contact between the rubber strips and the pump pipe also reduces the vibration of the pump pipe during concrete pumping.

[0026] Other features and corresponding beneficial effects of this application will be described in the latter part of the specification, and it should be understood that at least some of the beneficial effects will become obvious from the description in this application. Attached Figure Description

[0027] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; their purpose is to illustrate the gist of the invention.

[0028] Figure 1 This is a top view of a concrete vertical pump pipe fixing device according to an embodiment of the present invention;

[0029] Figure 2 This is a side view of a fixing device for a vertical concrete pump pipe according to an embodiment of the present invention;

[0030] Figure 3 This is a cross-sectional view of a concrete vertical pump pipe fixing device according to an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Flared mouth; 2. Pump pipe; 3. Fastening steel plate; 31. Notch; 4. Bolt; 5. Nut; 6. Trapezoidal washer; 7. Rubber strip. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation on this application. Furthermore, unless otherwise expressly specified and limited, the terms "installed" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0036] Example

[0037] See Figures 1-3 This embodiment provides a fixing device for a vertical concrete pump pipe, including a flared opening 1 fixed at the hole position, multiple fastening steel plates 3 set inside the flared opening 1, and bolts 4 and nuts 5 for fixing the fastening steel plates 3; specifically, the flared opening 1 is rectangular and set according to the size of the hole. The flared opening 1 is set inside the hole and serves as the foundation for fixing the pump pipe 2 and the source of fastening force.

[0038] Multiple fastening steel plates 3 have a notch 31 in the center to accommodate the pump pipe 2. The pump pipe 2 passes through the notch 31. The shape of the notch 31 matches the shape of the pump pipe 2, so that there is more contact surface between the fastening steel plate 3 and the pump pipe 2, and the pump pipe 2 can be clamped more evenly.

[0039] Bolt 4 penetrates from the outside of the flared opening 1 into the interior of the flared opening 1 and connects to the fastening steel plate 3. Preferably, bolt 4 and fastening steel plate 3 are connected by welding. Fastening steel plate 3 moves with bolt 4 to clamp or loosen pump pipe 2. Nut 5 is located on the outside of the flared opening 1 and is used to fasten bolt 4. Specifically, nut 5 is a double-nut countersunk nut, which is not easy to loosen and provides a more stable fastening force to pump pipe 2.

[0040] In existing technologies, wooden wedges are typically placed between the pump pipe and the pre-reserved concrete hole to tighten the pump pipe and ensure its vertical stability. However, the rigid connection between the wooden wedge and the pre-reserved concrete hole can easily lead to problems such as concrete breakage and pipe bursting around the hole. Furthermore, continuous micro-vibrations are easily generated during concrete pumping, which can cause the wooden wedges to loosen over prolonged operation, making long-term operation impossible. Additionally, the connection needs to be inspected before each pumping run, affecting construction progress and quality. This embodiment, however, uses bolts 4 and fastening steel plates 3 to clamp the pump pipe 2, facilitating installation, disassembly, and maintenance.

[0041] Specifically, in this embodiment, a trapezoidal washer 6 is provided between the nut 5 and the flared end 1. The trapezoidal washer 6 is thicker at the bottom and thinner at the top, compensating for the inclination of the outer side of the flared end 1, allowing the nut to be set vertically, and enabling the bolt 4 connected to the nut 5 to move horizontally. In addition, a rubber strip 7 is provided between the pump pipe 2 and the fastening steel plate 3, and the rubber strip 7 is engaged at the notch 31. Part of the rubber strip 7 is embedded in the fastening steel plate 3, and part of it protrudes from the fastening steel plate 3. The trapezoidal washer 6 and the rubber strip 7 absorb the minor vibrations of the pump pipe 2, thereby reducing the probability of concrete pipe bursting; and increase the friction, making the pump pipe 2 more secure and less prone to loosening. On the other hand, if a pipe burst occurs, this embodiment facilitates the replacement of the pump pipe 2, improves the efficiency of pipe burst repair, and is particularly important in reinforcing vertical concrete pumping pipes and improving concrete pouring efficiency.

[0042] Specifically, the flared opening is pre-embedded in the hole and fixed with concrete.

[0043] Specifically, a fastening steel plate 3 has multiple bolts 4 on its side, and the multiple bolts 4 are symmetrically arranged on the fastening steel plate 3 about the center of the pump pipe 2.

[0044] In some embodiments, the rectangular bell mouth 1 is a rectangular steel cylinder structure with an upper diameter of 300mm, a lower diameter of 200mm, and a height of 300mm. The steel cylinder wall thickness is 5mm. Inside, there are two opposing fastening steel plates 3. The front of the fastening steel plates 3 has a notch 31, which is semi-circular and used to clamp the pump pipe 2. A rubber strip 7 is installed inside the notch 31, embedded in a 30mm thick steel plate, with 10mm of the rubber pad protruding from the steel plate. Two bolts 4 are welded to the rear of the fastening steel plates 3, symmetrically arranged about the center of the pump pipe 2. The bolts 4 with the fastening steel plates 3 are tightened by nuts 5, thereby achieving the purpose of tightening the pump pipe 2 and preventing damage from excessive vibration. The nuts 5 used to tighten the bolts 4 have a thread size of 50mm and a pitch of 8mm. A trapezoidal washer 6, 700mm long and 700mm wide, with an upper thickness of 100mm and a lower thickness of 200mm, is fixed to the outer wall of the rectangular bell mouth 1. It uses a method of mutual squeezing from both sides to fix the vertical concrete pumping pipe 2, so that the rubber strip 7 comes into contact with the pump pipe 2 and the force is transmitted to the fastening steel plate 3 welded to the bolt 4, thus achieving the effect of reinforcing the pump pipe 2.

[0045] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the substantive content of this utility model, and will not be elaborated here.

[0046] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A fixing device for a vertical concrete pump pipe, characterized in that, Includes a flared opening (1) fixed at the hole position, multiple fastening steel plates (3) set in the flared opening (1), and bolts (4) and nuts (5) for fixing the fastening steel plates (3); The plurality of fastening steel plates (3) have a notch (31) at their center to accommodate the pump pipe (2), through which the pump pipe (2) passes; The bolt (4) passes through the outside of the flared mouth (1) and enters the inside of the flared mouth (1) and is connected to the fastening steel plate (3). The bolt (4) drives the fastening steel plate (3) to move, clamping or loosening the pump pipe (2). The nut (5) is located on the outside of the flared mouth (1) and the bolt (4) is fastened by the nut (5).

2. The fixing device for a vertical concrete pump pipe according to claim 1, characterized in that, A trapezoidal washer (6) is provided between the nut (5) and the outer side of the flared mouth (1). The trapezoidal washer (6) is thicker on the lower side and thinner on the upper side, which compensates for the inclination of the outer side of the flared mouth (1), so that the nut (5) can be set vertically, and the bolt (4) threadedly connected to the nut (5) can move in the horizontal plane.

3. The fixing device for a vertical concrete pump pipe according to claim 1, characterized in that, A rubber strip (7) is provided between the pump pipe (2) and the fastening steel plate (3), and the rubber strip (7) is engaged at the notch (31).

4. The fixing device for a vertical concrete pump pipe according to claim 3, characterized in that, Part of the rubber strip (7) is embedded in the fastening steel plate (3), and part of it protrudes from the fastening steel plate (3).

5. The fixing device for a vertical concrete pump pipe according to claim 1, characterized in that, A plurality of bolts (4) are provided on the side of one of the fastening steel plates (3), and the plurality of bolts (4) are symmetrically arranged on the fastening steel plate (3) about the center of the pump pipe (2).

6. The fixing device for a vertical concrete pump pipe according to claim 1, characterized in that, The bolt (4) is connected to the fastening steel plate (3) by welding.

7. The fixing device for a vertical concrete pump pipe according to claim 1, characterized in that, It has two fastening steel plates (3), each of which is provided with a semi-circular notch (31). Two bolts (4) are provided at the end of the fastening steel plate (3) away from the notch (31). The two bolts (4) are symmetrically arranged about the center of the pump pipe (2).

8. The fixing device for a vertical concrete pump pipe according to claim 1, characterized in that, The nut (5) is a double-nut top-down nut.

9. A fixing device for a vertical concrete pump pipe according to claim 1, characterized in that, The curvature of the notch (31) matches the shape of the pump tube (2).

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