A new type of centrifuge foundation without anchor bolts

Abstract

The utility model discloses a novel centrifuge foundation without anchor bolts, which includes a primary casting layer, a main support beam and a secondary casting layer from bottom to top; the primary casting layer as the bottom layer includes two layers of steel mesh, a first concrete layer and embedded parts; the main support beam as the middle layer includes a longitudinal support beam, a transverse support beam and welded studs; the secondary casting layer as the top layer includes a layer of steel mesh and a second concrete layer; the centrifuge base is installed on the secondary casting layer and locked and fixed with the main support beam. The novel centrifuge foundation without anchor bolts adopting the utility model has a reliable structure and stable performance. In the actual production process, the exciting force generated during the operation of the centrifuge can be greatly dispersed and transmitted, reducing the risk of loosening of fastening bolts due to resonance; the equipment accuracy is greatly improved, the difficulty of on-site installation and commissioning is reduced, and the installation and commissioning cycle is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of production of prestressed concrete pipe piles and hollow square piles, in particular to a novel centrifuge foundation without anchor bolts. Background Art

[0002] The centrifugal forming process of concrete pipe piles and hollow square piles is an important link in the production process of pipe piles and hollow square piles. It is widely used in the production of high-strength prestressed concrete pipe piles and hollow square piles. When in use, the mixed concrete is evenly arranged in the concrete forming mold, and then the mold is placed on a centrifuge. The mold is driven by the centrifuge to rotate at high speed. At this time, the concrete is enhanced in density and formed under the action of high-speed centrifugation. Moreover, by comparing the precast concrete components formed by vibration molding and centrifugal molding, centrifugal molding has the advantages of good density, high strength and strong bearing capacity. At the same time, the production site occupies a small area, which is convenient for organizing large-scale factory production.

[0003] The foundation of the pipe pile centrifuge is the supporting structure of the centrifuge body and the drive motor, and is closely related to the safe operation of the equipment. When the centrifuge is running, due to factors such as changes in the center of mass of the concrete inside the pipe pile mold, production and installation errors, and changes in the start-up and shutdown conditions, a relatively significant unbalanced load will be generated, causing the foundation to vibrate, affecting the stability of the main machine operation and the service life of the centrifuge base; for the centrifuge foundation with embedded rail bolts, the vibration problem is more prominent. And due to the working nature of the centrifuge, there are high requirements for the horizontal accuracy of the foundation installation and the coaxiality of the drive shaft. The actual on-site installation conditions and processing accuracy are difficult to meet actual needs, and multiple pourings of concrete are required, and the installation cycle is long. Summary of the invention

[0004] The purpose of the utility model is to provide a new type of centrifuge foundation without anchor bolts, which has a reliable structure and stable performance. In the actual production process, it can greatly disperse the exciting force generated during the operation of the centrifuge and reduce the risk of loosening of the fastening bolts due to resonance; greatly improve the equipment accuracy, reduce the difficulty of on-site installation and debugging, and shorten the installation and debugging cycle.

[0005] In order to solve the above technical problems, the utility model provides a novel centrifuge foundation without anchor bolts, which comprises a primary pouring layer, a main support beam and a secondary pouring layer from bottom to top;

[0006] The primary casting layer as the bottom layer includes two layers of steel mesh, a first concrete layer and embedded parts;

[0007] The main support beam as the middle layer includes a longitudinal support beam, a transverse support beam and welded studs;

[0008] The secondary casting layer as the top layer includes a layer of steel mesh and a second concrete layer;

[0009] The centrifuge base is installed on the secondary casting layer and is locked and fixed with the main support beam.

[0010] Preferably, the two layers of steel mesh in the primary casting layer are formed by a plurality of groups of steel bars laid in bidirectionally.

[0011] Preferably, there are multiple groups of embedded parts in the primary casting layer, which are placed at intervals along the main support beam. After the placement is completed, the first concrete layer is poured. During the pouring, the upper surface of the first concrete layer is flush with the upper surface of the embedded parts.

[0012] Preferably, the embedded parts include an embedded plate cast in the first concrete layer and at least one full-thread screw vertically welded to the embedded plate, the full-thread screw extends into the main support beam, and the main support beam is fixedly installed on the primary casting layer by a locking nut.

[0013] Preferably, the main bodies of the longitudinal support beam and the transverse support beam in the main support beam are made of national standard narrow flange H-shaped steel, and the upper and lower flanges are connected by welded ribs on both sides.

[0014] Preferably, two adjacent groups of horizontally arranged longitudinal support beams are connected by using several groups of spaced-apart transverse support beams, and after the longitudinal support beams are welded to the transverse support beams, a welding bolt is transversely welded at a certain interval on both sides of the H-shaped steel rib below the upper surface of the upper flange.

[0015] Preferably, a layer of steel mesh in the secondary casting layer is formed by several groups of steel bars laid in bidirectionally. When laid, the layer of steel mesh passes through the horizontal and vertical bidirectional through holes reserved on the main support beam, so that the layer of steel mesh is fixedly connected to the main support beam.

[0016] Preferably, the second concrete layer in the secondary pouring layer is poured onto the upper surface of the main support beam, and needs to be poured inclined outward when pouring onto the upper surface.

[0017] Preferably, the centrifuge base includes a base plate and a locking piece, the base plate is welded to the bottom of the centrifuge, the locking piece includes a bolt and a lock nut, and after the centrifuge is installed on the secondary casting layer through the centrifuge base, the base plate is locked and fixed to the main support beam through the locking piece.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The new type of centrifuge foundation without anchor bolts adopted by the utility model has a reliable structure and stable performance. In the actual production process, it can greatly disperse the exciting force generated during the operation of the centrifuge, reduce the risk of loosening of fastening bolts due to resonance, greatly improve the accuracy of the equipment, reduce the difficulty of on-site installation and commissioning, and shorten the installation and commissioning cycle. In the later stage, it can reduce the maintenance frequency of maintenance staff, reduce labor intensity, increase the service life of the centrifuge, and reduce the risk of safety accidents caused by loosening of fastening bolts due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the layout diagram of the embedded parts of the foundation of the new centrifuge without anchor bolts provided by the utility model;

[0021] Figure 2 It is a BB cross-sectional view provided by the utility model;

[0022] Figure 3 It is the AA cross-sectional view provided by the utility model;

[0023] Figure 4 It is a side view of the new centrifuge foundation without anchor bolts provided by the utility model;

[0024] Figure 5 It is a structural schematic diagram of the embedded parts provided by the utility model;

[0025] Figure 6 It is a schematic diagram of the installation of the centrifuge base provided by the utility model;

[0026] Figure 7 It is a schematic diagram of the secondary pouring layer structure provided by the utility model.

[0027] In the figure: 1, primary casting layer; 101, two layers of steel mesh; 102, first concrete layer; 103, embedded parts; 1031, embedded plate; 1032, full-thread screw;

[0028] 2. Main support beam; 201. Longitudinal support beam; 202. Transverse support beam; 203. Welded studs;

[0029] 3. Secondary pouring layer; 301. One layer of steel mesh; 302. Second concrete layer;

[0030] 4. Centrifuge base; 401. Base plate; 402. Locking piece;

[0031] 5. Polyurethane foam;

[0032] 6. Steel plate. DETAILED DESCRIPTION

[0033] The following is a further detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0036] Embodiment 1

[0037] The utility model provides a new type of centrifuge foundation without anchor bolts, please refer to Figure 1 and Figure 2 , from bottom to top are the primary pouring layer 1, the main support beam 2 and the secondary pouring layer 3; the primary pouring layer 1 as the bottom layer includes two layers of steel mesh 101, the first concrete layer 102 and the embedded parts 103; the main support beam 2 as the middle layer includes a longitudinal support beam 201, a transverse support beam 202 and a welded stud 203; the secondary pouring layer 3 as the top layer includes a layer of steel mesh 301 and a second concrete layer 302; the centrifuge base 4 is installed on the secondary pouring layer 3 and is locked and fixed to the main support beam 2.

[0038] In the present invention, the first concrete layer 102 may be made of C30 concrete, while the second concrete layer 302 may be made of C40 concrete. The standard cubic compressive strength of C30 concrete is 30 MPa (i.e., 30 megapascals), while the compressive strength of C40 concrete is 40 MPa. This means that C40 concrete is stronger than C30 concrete in terms of bearing pressure. The second concrete layer 302 is in direct contact with the base of the centrifuge and directly bears the exciting force generated during the operation of the centrifuge, so a concrete layer with higher compressive strength is required.

[0039] For details, please refer to Figure 3-5 The two layers of steel mesh 101 in the primary casting layer 1 are formed by a plurality of groups of steel bars laid in two directions. There are multiple groups of embedded parts 103 in the primary casting layer 1, which are placed at intervals along the main support beam 2. After the placement is completed, the first concrete layer 102 is poured. During the pouring, the upper surface of the first concrete layer 102 is flush with the upper surface of the embedded parts 103. Adding two layers of steel mesh 101 to the first concrete layer 102 can enhance the structural strength of the primary casting layer 1 and further improve its compressive strength.

[0040] Furthermore, the embedded part 103 includes an embedded plate 1031 cast in the first concrete layer 102 and at least one full-thread screw 1032 vertically welded to the embedded plate 1031, and the full-thread screw 1032 extends into the main support beam 2, and fixes the main support beam 2 to the primary casting layer 1 through a locking nut. One end of the full-thread screw 1032 vertically passes through the embedded plate 1031 cast in the first concrete layer 102 and is connected through a locking nut, and the other end is also connected to the main support beam 2 through a locking nut, so that the main support beam 2 and the first concrete layer 102 are connected to each other, and because the two are connected through the locking nut, the main support beam 2 can also adjust its height and horizontality during the installation process, thereby ensuring the stable installation of the main support beam 2.

[0041] Specifically, the main bodies of the longitudinal support beams 201 and transverse support beams 202 in the main support beam 2 are made of national standard narrow flange H-shaped steel, and the upper and lower flanges are connected by welding ribs on both sides; and two adjacent groups of horizontally arranged longitudinal support beams 201 are connected by a plurality of groups of spaced transverse support beams 202, and after the longitudinal support beams 201 and the transverse support beams 202 are welded, a welding stud 203 is transversely welded at a certain distance on both sides of the H-shaped steel rib plate below the upper surface of the upper flange. After the main support beam 2 is formed by welding the longitudinal support beams 201 and the transverse support beams 202, a welding stud 203 is transversely welded at a certain distance on both sides of the H-shaped steel rib plate, so as to further improve the structural strength of the main support beam 2.

[0042] Specifically, a layer of steel mesh 301 in the secondary casting layer 3 is formed by a plurality of groups of steel bars laid in two directions, and when laid, the layer of steel mesh 301 passes through the horizontal and vertical bidirectional through holes reserved on the main support beam 2, so that the layer of steel mesh 301 is fixedly connected to the main support beam 2. In other words, the main support beam 2 is cast in the secondary casting layer 3, and the main support beam 2 is also connected to the layer of steel mesh 301 in the secondary casting layer 3, so that the secondary casting layer 3 is integrated with the main support beam 2 after hardening.

[0043] Furthermore, the second concrete layer 302 in the secondary pouring layer 3 is poured onto the upper surface of the main support beam 2, and when pouring onto the upper surface, it needs to be poured tilted outward to guide the water to flow out, so as to avoid damage to equipment such as centrifuges due to water accumulation.

[0044] For details, please refer to Figure 6 The centrifuge base 4 includes a base plate 401 and a locking piece 402. The base plate 401 is welded to the bottom of the centrifuge. The locking piece 402 includes a bolt and a lock nut. After the centrifuge is installed on the secondary casting layer 3 through the centrifuge base 4, the base plate 401 is locked and fixed to the main support beam 2 through the locking piece 402.

[0045] A new method for implementing a centrifuge foundation without anchor bolts, please refer to Figure 1-7 , including the following steps:

[0046] Step A: pouring once;

[0047] Step A1: First, two layers of steel mesh 101 formed by bidirectionally laying a plurality of steel bars are connected to the foundation;

[0048] Step A2: Then, a number of embedded parts 103 are placed according to the size of the main support beam 2;

[0049] Step A3: Then pour the first concrete layer 102 until it is flush with the upper surface of the embedded part 103, thereby completing the construction of the primary pouring layer 1;

[0050] Step B: Construction of main support beams;

[0051] Step B1: First, weld ribs on both sides of the national standard narrow flange H-shaped steel to connect the upper and lower flanges to form a longitudinal support beam 201 and a transverse support beam 202;

[0052] Step B2: Then, a plurality of groups of spaced transverse support beams 202 are used to connect two adjacent groups of horizontally arranged longitudinal support beams 201, and after the longitudinal support beams 201 and the transverse support beams 202 are welded, a welding stud 203 is transversely welded at intervals on both sides of the H-shaped steel rib below the upper surface of the upper flange;

[0053] Step B3: After the main support beam 2 is integrally welded, several groups of mounting surfaces that match the centrifuge base 4 are finely processed to ensure the horizontal accuracy of the multiple groups of mounting surfaces;

[0054] Step B4: Finally, install it on the embedded part 103 of the primary pouring layer 1, and use a laser leveler to level it, adjust the horizontality, and control the overall error within 1mm to complete the construction of the main support beam 2;

[0055] Step C: Secondary pouring;

[0056] Step C1: First, a layer of steel mesh 301 formed by bidirectionally laying a plurality of groups of steel bars is connected to the main support beam 2, and during laying, the layer of steel mesh 301 passes through the bidirectional through holes reserved on the main support beam 2, so that the layer of steel mesh 301 is fixedly connected to the main support beam 2;

[0057] Step C2: Before pouring, the area around the centrifuge base bolts is filled with polyurethane foam 5, with a thickness of 70 mm and a width of 40 mm;

[0058] Step C3: Then pour the second concrete layer 302 until the upper surface of the main support beam 2, and pour it tilted outward when pouring to the upper surface;

[0059] Step C4: After the initial setting of the pouring, a 3 mm thick steel plate 6 is laid on the surface of the polyurethane foam to be fixed to the centrifuge base with bolts to complete the secondary pouring construction;

[0060] Step D: Installing the centrifuge;

[0061] Step D1: firstly, the base plate 401 is welded and formed according to the specifications of the centrifuge, and after the welding, the whole is tempered to remove the welding stress;

[0062] Step D2: Then, the upper and lower mounting surfaces of the base plate 401 are finely processed. The upper mounting surface is installed in cooperation with the bearing seat of the centrifuge. After the lower mounting surface is installed on the secondary casting layer 3, the base plate 401 is locked and fixed to the main support beam 2 by the locking member 402.

[0063] The new type of centrifuge foundation without anchor bolts adopted by the utility model has a reliable structure and stable performance. In the actual production process, it can greatly disperse the exciting force generated during the operation of the centrifuge, reduce the risk of loosening of fastening bolts due to resonance, greatly improve the accuracy of the equipment, reduce the difficulty of on-site installation and commissioning, and shorten the installation and commissioning cycle. In the later stage, it can reduce the maintenance frequency of maintenance staff, reduce labor intensity, increase the service life of the centrifuge, and reduce the risk of safety accidents caused by loosening of fastening bolts due to vibration.

[0064] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A new type of centrifuge foundation without anchor bolts, characterized in that: From bottom to top, they are the primary pouring layer (1), the main support beam (2) and the secondary pouring layer (3); The primary casting layer (1) as the bottom layer comprises two layers of steel mesh (101), a first concrete layer (102) and embedded parts (103); The main support beam (2) as an intermediate layer comprises a longitudinal support beam (201), a transverse support beam (202) and welded studs (203); The secondary casting layer (3) as the top layer comprises a layer of steel mesh (301) and a second concrete layer (302); The centrifuge base (4) is installed on the secondary casting layer (3) and is locked and fixed to the main support beam (2).

2. A novel centrifuge foundation without anchor bolts as claimed in claim 1, characterized in that: The two layers of steel mesh (101) in the primary casting layer (1) are formed by a plurality of groups of steel bars laid in two directions.

3. A novel centrifuge foundation without anchor bolts as claimed in claim 1, characterized in that: The embedded parts (103) in the primary casting layer (1) are provided in a plurality of groups and are placed at intervals along the main support beam (2). After the placement is completed, the first concrete layer (102) is poured. During the pouring, the upper surface of the first concrete layer (102) is flush with the upper surface of the embedded parts (103).

4. A novel centrifuge foundation without anchor bolts as claimed in claim 3, characterized in that: The embedded part (103) comprises an embedded plate (1031) cast in the first concrete layer (102) and at least one full-thread screw (1032) vertically welded to the embedded plate (1031); the full-thread screw (1032) extends into the main support beam (2) and fixes the main support beam (2) to the primary casting layer (1) via a locking nut.

5. A novel centrifuge foundation without anchor bolts as claimed in claim 1, characterized in that: The longitudinal support beam (201) and the transverse support beam (202) in the main support beam (2) are formed by using national standard narrow flange H-shaped steel, and the upper and lower flanges are connected by welding ribs on both sides.

6. A novel centrifuge foundation without anchor bolts as claimed in claim 5, characterized in that: Two adjacent groups of horizontally arranged longitudinal support beams (201) are connected by a plurality of groups of spaced transverse support beams (202), and after the longitudinal support beams (201) and the transverse support beams (202) are welded, a welding stud (203) is transversely welded at intervals on both sides of the H-shaped steel rib below the upper surface of the upper flange.

7. A novel centrifuge foundation without anchor bolts as claimed in claim 1, characterized in that: A layer of steel mesh (301) in the secondary casting layer (3) is formed by a plurality of groups of steel bars laid in two directions. When laid, the layer of steel mesh (301) passes through the bidirectional through holes reserved in the horizontal and vertical directions on the main support beam (2), so that the layer of steel mesh (301) is fixedly connected to the main support beam (2).

8. A novel centrifuge foundation without anchor bolts as claimed in claim 7, characterized in that: The second concrete layer (302) in the secondary casting layer (3) is cast onto the upper surface of the main support beam (2), and when casting onto the upper surface, it needs to be cast inclined outwards.

9. A novel centrifuge foundation without anchor bolts as claimed in claim 1, characterized in that: The centrifuge base (4) comprises a base plate (401) and a locking member (402); the base plate (401) is welded to the bottom of the centrifuge; the locking member (402) comprises a bolt and a locking nut; after the centrifuge is installed on the secondary casting layer (3) via the centrifuge base (4), the base plate (401) is locked and fixed to the main support beam (2) via the locking member (402).

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