Prestressed concrete large pipe pile segment centrifugal, vibration, roller pressing composite forming equipment

Abstract

The present invention relates to the technical field of centrifugal forming of pipe piles and pipe sections, and in particular to a centrifugal, vibration, and roller-pressed composite forming device for prestressed concrete large pipe pile sections, comprising a pipe mold, a vibrator, a rotary support assembly, a support device, a driving device, a belt feeder, and a pressure roller; the pipe mold is arranged horizontally and cylindrically, and a cut extending along its axial direction is penetrated and opened on the peripheral wall of the pipe mold; the vibrator is used to drive the pipe mold to vibrate; the rotary support assembly is rotatably sleeved on the outside of the pipe mold to limit the axial and radial jumps of the pipe mold; the support device is used to support and limit the rotary support assembly; the driving device is used to drive the pipe mold to rotate inside the rotary support assembly; the belt feeder is used to evenly arrange the concrete inside the pipe mold; and the pressure roller is used to roll the concrete inside the pipe mold when the pipe mold rotates. The present invention solves the current problems of axial vibration and radial jump of the pipe mold.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal forming of pipe piles and pipe segments, in particular to centrifugal, vibration and roller-pressing composite forming equipment for prestressed concrete large pipe pile segments. Background Art

[0002] The centrifugal forming of pipe piles utilizes the high-speed rotation of the centrifuge to subject the concrete mixture to the centrifugal force in the mold, so that it is thrown toward the mold wall and fills the mold, while expelling excess water and air, making the concrete more compact and improving the strength and density of the pipe piles.

[0003] For example, a Chinese patent document with the announcement number CN216543933U discloses a centrifugal forming device for prestressed concrete pipe piles, including a base and a centrifugal tube, side plates are installed on both sides of the top of the base, and a movable plate is distributed on the inner side of the side plates, a telescopic rod is installed on the bottom of the movable plate, and a telescopic spring is connected to the outer surface of the telescopic rod, a protective plate is connected to the bottom of the telescopic rod, and a roller is connected to the bottom of the protective plate, and a pressing groove is distributed on the inner side of the protective plate. The centrifugal forming device for prestressed concrete pipe piles can not only improve the stability of the entire device during centrifugation, prevent the centrifugal tube from moving when rotating, and affect the structure of the internal concrete during molding, but also control the rotation speed of the entire device to prevent the centrifugal tube from falling due to excessive rotation speed of the device, causing harm to the surrounding workers, and the setting of the card slot can play a certain limiting role on the centrifugal tube, thereby ensuring the stability of the centrifugal tube itself during rotation.

[0004] However, the pipe mold of the current pipe pile centrifugal forming device has the problem of axial vibration and radial runout during high-speed rotation. The reason is that the current pipe mold silo adopts a single-opening structure design, that is, the pipe mold is cut unilaterally in its length direction to form a C-shaped structure, and then fixed at the opening position by fastening blocks, bolts and other structures. When demoulding is required, the bolts and other structures are opened and unscrewed, and then the pipe mold is opened. In this structure, due to the setting of the fastening blocks, bolts and other structures at the opening position, the weight of the entire pipe mold at the opening position is greater than the weight of the remaining parts, and the forming process of the pipe pile pipe section requires the pipe mold to be kept in a high-speed rotation state for a long time. Therefore, the centrifugal force at each position during the high-speed rotation of the pipe mold is different, resulting in the problem of radial runout of the pipeline. The emergence of this problem will further lead to axial vibration of the pipe mold, and ultimately cause the pipe mold to deform under the action of uneven centrifugal force, and will also cause the problem of poor concrete density, and the safety of the forming equipment is difficult to guarantee. Summary of the invention

[0005] The object of the present invention is to provide a centrifugal, vibrating and roller-pressing composite forming device for prestressed concrete large pipe pile segments, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a centrifugal, vibration, and roller-pressing composite forming device for prestressed concrete large pipe pile segments, comprising:

[0007] The tube mold is horizontally arranged and cylindrical, and a cutout extending along the axial direction is formed through the peripheral wall of the tube mold;

[0008] A vibration exciter, used for driving the tube mold to vibrate;

[0009] A rotating support assembly is rotatably sleeved on the outside of the pipe mold to limit the axial and radial jumping of the pipe mold; the rotating support assembly includes two fixed rings sleeved and fixed on the outer peripheral surface of the pipe mold, two radial extrusion rings rotatably connected to the outer peripheral surfaces of the two fixed rings through a plurality of first rollers, and two axial extrusion rings rotatably connected to the two end surfaces separated from the two fixed rings through a plurality of second rollers, the two radial extrusion rings are fixedly connected, and the two axial extrusion rings are detachably clamped on the two radial extrusion rings; the fixed ring includes a first ring body and an oblique fracture opened on the first ring body, and the oblique fracture is connected to the incision at one end close to the pipe mold;

[0010] A support device for supporting and limiting the rotating support assembly;

[0011] A driving device, used for driving the tube mold to rotate inside the rotating support assembly;

[0012] A belt placing machine, which can move along the axial direction of the pipe mold and is used to evenly place concrete inside the pipe mold;

[0013] The pressing roller is arranged parallel to the axis of the pipe mold and penetrates the pipe mold, and is used for rolling the concrete inside the pipe mold when the pipe mold rotates.

[0014] Preferably, the radial extrusion ring includes two radial half rings, wherein a first connecting plate is fixed at both ends of one of the radial half rings, and a second connecting plate is fixed at both ends of the other radial half ring, and the first connecting plate and the second connecting plate are detachably fixedly connected.

[0015] Preferably, the axial extrusion ring includes two axial half rings, wherein a third connecting plate is fixed at both ends of one of the axial half rings, and a fourth connecting plate is fixed at both ends of the other axial half ring, the third connecting plate is detachably mounted on the first connecting plate, and the fourth connecting plate is detachably mounted on the second connecting plate.

[0016] Preferably, the fixing ring further comprises a second ring body, two of the second ring bodies are respectively fixed on two adjacent end faces of the two first ring bodies, and the second ring body is provided with a straight cutout matched with the cutout;

[0017] A first positioning hole and a second positioning hole are respectively opened on both sides of the oblique fracture, and a positioning block is inserted into a cavity formed by the first positioning hole and the second positioning hole, and an end face of the positioning block away from the second ring body is flush with an end face of the first ring body away from the second ring body.

[0018] Preferably, both ends of the positioning block are provided with locking protrusions, and the inner surfaces of the first positioning hole and the second positioning hole are provided with locking grooves matched with the locking protrusions.

[0019] Preferably, the cross-sectional shape of the positioning block is a parallelogram, and the end of the positioning block close to the second ring body is a high end.

[0020] Preferably, the axial semi-ring comprises an integrally formed main body, a connecting portion and a bending portion, the outer edge of the radial semi-ring is clamped in a bending groove formed on the bending portion, an air cavity is formed between the main body and the first roller, and an exhaust channel is formed between the inner edge of the main body and the outer peripheral surface of the tube mold;

[0021] The first roller and the second roller are both hollow structures. When rotating, the first roller introduces external air into the air cavity, and then exhausts it through the second roller and the exhaust channel.

[0022] Preferably, the first roller comprises a first mounting seat and a first wheel body which are rotatably connected, the first mounting seat is fixedly mounted on the main body; a first through hole is formed inside the first wheel body, and a first fan blade is mounted inside the first through hole;

[0023] The second roller comprises a second mounting seat and a second wheel body which are rotatably connected, the second mounting seat is fixedly mounted on the radial semi-ring, a second through hole is formed inside the second wheel body, and a second fan blade is mounted inside the second through hole;

[0024] The aperture of the first through hole is larger than the aperture of the second through hole.

[0025] Preferably, the supporting device includes a base and a supporting platform fixed on the base, a vertically telescopic telescopic rod is fixedly mounted on the supporting platform, a pressing plate is provided at the top end of the telescopic axis of the telescopic rod, and the pressing plate is used to press down the first connecting plate.

[0026] Preferably, the driving device comprises a driving shaft assembly and a driven shaft assembly mounted on the base, and the driving shaft assembly and the driven shaft assembly are respectively arranged on the front and rear sides of the tube mold.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention utilizes the radial extrusion ring and the first roller to firmly compress the fixing ring with the oblique fracture in the radial direction, which is convenient for the high-speed rotation of the pipe mold and can prevent the radial runout of the pipe mold. Then, the axial extrusion ring and the second roller are used to squeeze the two fixing rings from both sides respectively to prevent the pipe mold from moving in the axial direction, thereby improving the stability of the pipe mold during high-speed rotation and improving the density of concrete. Moreover, since the fixing ring adopts the oblique fracture, on the one hand, there will be no uneven weight in the circumferential direction of the pipe mold. During the high-speed rotation of the pipe mold, the centrifugal force applied to each circumferential position of the pipe mold is equal, thereby further avoiding the radial runout of the pipe mold. Combined with the circumferential clamping effect of the fixed ring on the pipe mold, the deformation of the pipe mold is effectively prevented; on the other hand, the setting of the oblique fracture allows more first rollers to extrude the oblique fracture, eliminating the situation where the oblique fracture is forced to open due to centrifugal force during the high-speed rotation of the pipe mold, thereby improving the safety of the large pipe pile pipe segment forming process; further, due to the structural design of the radial extrusion ring and the axial extrusion ring, the pipe mold can first install the rotating support assembly on the outside of the pipe mold when it is not working. When work is needed, the pipe mold with the rotating support assembly is directly hoisted to the entire forming equipment, saving the preparation time before the pipe mold works and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall front view structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the top view of the structure of the pipe mold, the driving device and the rotating support assembly of the present invention;

[0031] Figure 3 It is a three-dimensional structural schematic diagram of the pipe mold and the rotating support assembly of the present invention;

[0032] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0033] Figure 5 It is a partial structural schematic diagram of the rotary support assembly of the present invention;

[0034] Figure 6 It is a structural schematic diagram of the pipe mold and the fixing ring of the present invention;

[0035] Figure 7 It is a schematic diagram of the top view of the fixing ring of the present invention;

[0036] Figure 8 For the present invention Figure 7 The enlarged structural diagram at B in the middle;

[0037] Fig. 9 It is a left-side structural schematic diagram of the fixing ring of the present invention;

[0038] Fig.10 For the present invention Fig. 9 The enlarged structural diagram at C in the middle;

[0039] Fig.11 It is a right side structural schematic diagram of the fixing ring of the present invention;

[0040] Fig.12 It is a cross-sectional three-dimensional structural schematic diagram of the pipe mold and the rotating support assembly of the present invention;

[0041] Fig.13 For the present invention Fig.12 A schematic diagram of the front view structure of

[0042] Fig.14 is a schematic structural diagram of the first roller of the present invention;

[0043] Fig.15 is a schematic cross-sectional structural diagram of the first roller of the present invention;

[0044] Fig.16 is a schematic structural diagram of the second roller of the present invention;

[0045] Fig.17 is a schematic cross-sectional structural diagram of the second roller of the present invention;

[0046] Fig.18 For the present invention Fig.13 The enlarged structural diagram at D in the middle;

[0047] Fig.19 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixing ring of the present invention;

[0048] Fig. 20 For the present invention Fig.19 Enlarged structural diagram at E in the middle.

[0049] In the figure: 1, pipe mold; 11, incision; 2, base; 3, support platform; 31, telescopic rod; 4, driving shaft assembly; 5, exciter; 6, rotating support assembly; 61, fixed ring; 611, first ring body; 612, second ring body; 613, oblique fracture; 614, normal fracture; 615, positioning block; 616, first positioning hole; 617, second positioning hole; 618, positioning protrusion; 619, positioning groove; 62, radial extrusion ring; 621, radial semi-ring; 622, first connecting plate; 623, second connecting plate; 63, first roller; 631, The first mounting seat; 632, the first wheel body; 633, the first through hole; 634, the first blade; 64, the axial extrusion ring; 641, the axial semi-ring; 6411, the main body; 6412, the connecting portion; 6413, the bending portion; 6414, the bending groove; 6415, the exhaust passage; 6416, the air cavity; 642, the third connecting plate; 643, the fourth connecting plate; 65, the second roller; 651, the second mounting seat; 652, the second wheel body; 653, the second through hole; 654, the second blade; 7, the driven shaft assembly; 8, the belt feeder; 9, the pressure roller. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] See also Figure 1-Figure 20 , the present invention provides a technical solution:

[0052] The centrifugal, vibration and roller-pressing composite forming equipment for prestressed concrete large pipe pile segments comprises a pipe mold 1, a vibrator 5, a rotary support assembly 6, a support device, a driving device, a belt feeder 8 and a pressure roller 9. These components are described in detail below.

[0053] The pipe mold 1 is arranged horizontally and cylindrically, and a cutout 11 extending along its axial direction is penetrated on the peripheral wall of the pipe mold 1; in this embodiment, the pipe mold 1 can be made of Q355B steel material to ensure the strength and rigidity of the pipe mold 1, and the cutout 11 penetrates the pipe mold 1 in the circumferential direction of the pipe mold 1 to facilitate material cutting. Specifically, when it is necessary to disassemble the pipe piles and pipe sections formed inside, the cutout 11 can be pushed open by using tools such as hydraulic jacks, so that the pipe piles and pipe sections can be easily extracted from the pipe mold 1; utilizing the plastic characteristics of the material of the pipe mold 1, the pipe mold 1 restores its original structure after removing tools such as hydraulic jacks, so that the pipe mold 1 can be used multiple times.

[0054] The vibrator 5 is used to drive the tube mold 1 to vibrate. Through multiple on-site vibration experiments, it was finally determined that the vibrator 5 should be arranged between the driving shaft assembly 4 and the driven shaft assembly 7 of the driving device, directly below the tube mold 1. The specific number of vibrators 5 is determined according to the actual situation. The maximum exciting force of a single vibrator 5 is 2.2t, the speed is variable frequency regulated from 0 to 4000rpm, and the power of the vibration motor is 5.5kW.

[0055] The rotating support assembly 6 is rotatably sleeved on the outside of the pipe mold 1 to limit the axial and radial jumping of the pipe mold 1. Specifically, the rotating support assembly 6 is used to prevent the pipe mold 1 from axially jumping and radially jumping. The rotating support assembly 6 includes two fixed rings 61 sleeved and fixed on the outer circumference of the pipe mold 1, two radial extrusion rings 62 rotatably connected to the outer circumference of the two fixed rings 61 through a plurality of first rollers 63, and two axial extrusion rings 64 rotatably connected to the two end faces separated from the two fixed rings 61 through a plurality of second rollers 65. The two radial extrusion rings 62 are fixedly connected, and the two axial extrusion rings 64 are detachably clamped on the two radial extrusion rings 62, wherein the fixed rings 61, the radial extrusion rings 62 and the axial extrusion rings 64 can be made of the same material as the pipe mold 1.

[0056] The fixing ring 61 includes a first ring body 611 and an oblique cut 613 formed on the first ring body 611 . One end of the oblique cut 613 close to the pipe mold 1 is connected to the cut 11 .

[0057] Furthermore, a plurality of first rollers 63 are equidistantly installed in a ring shape on the inner edge of the radial extrusion ring 62, and the number of the first rollers 63 is such as to ensure that at any time, at least three first rollers 63 are squeezed on the outer edge portion of the first ring body 611 corresponding to the oblique fracture 613, that is, at least three first rollers 63 squeeze the oblique fracture 613, to ensure that the oblique fracture 613 will not open due to centrifugal force when the tube mold 1 rotates at high speed.

[0058] The support device is used to support and limit the rotating support assembly 6; specifically, the support device includes a base 2 and a support platform 3 fixed on the base 2, a telescopic rod 31 for vertical extension is fixedly installed on the support platform 3, and a pressure plate is provided at the top of the telescopic axis of the telescopic rod 31, and the pressure plate is used to press down the first connecting plate 622. Specifically, the second connecting plate 623 located below described below is placed on the top surface of the support platform 3, and the telescopic rod 31 can be a hydraulic cylinder. The telescopic rod 31 is installed on the side of the support platform 3, and a pressure plate is provided at the top of the telescopic axis of the telescopic rod 31, and the pressure plate is used to press down the top of the first connecting plate 622 located below. In this way, the rotating support assembly 6 and the pipe mold 1 can be pressed and fixed on the support platform 3 by using the telescopic rod 31, so as to complete the fixation of the pipe mold 1.

[0059] The driving device is used to drive the tube mold 1 to rotate inside the rotating support assembly 6; the driving device includes a driving shaft assembly 4 and a driven shaft assembly 7 mounted on the base 2, and the driving shaft assembly 4 and the driven shaft assembly 7 are respectively arranged on the front and rear sides of the tube mold 1. Specifically, the driving shaft assembly 4 mainly includes a motor and a tire, and the motor is used to drive the tire to rotate. During use, the outer surface of the tube mold 1 contacts the outer surface of the tire, so the rotation of the tire will drive the tube mold 1 to rotate; the driven shaft assembly 7 is the driving shaft assembly 4 without a motor.

[0060] The belt feeder 8 can move along the axial direction of the pipe mold 1 and is used to evenly arrange the concrete inside the pipe mold 1; specifically, a bracket with wheels is installed at one end of the belt feeder 8, so that the belt feeder 8 can move. Furthermore, in this embodiment, the moving direction of the belt feeder 8 is limited to move along the axial direction of the pipe mold 1. When in use, one end of the belt feeder 8 extends into the interior of the pipe mold 1, and the belt feeder 8 (equivalent to a belt conveyor) is used to transport concrete to the interior of the pipe mold 1. At the same time, with the movable characteristics of the belt feeder 8, the concrete can be evenly arranged inside the pipe mold 1 along the axial direction of the pipe mold 1. After the concrete is arranged, the belt feeder 8 is removed, the driving device is started to drive the pipe mold 1 to rotate at a high speed, and the exciter 5 is started, so as to realize the centrifugal and excitation of the prestressed concrete large pipe pile pipe section.

[0061] The pressing roller 9 is arranged parallel to the axis of the pipe mold 1 and penetrates the pipe mold 1. The outer circumference of the pressing roller 9 rolls with the inner circumference of the large pipe pile section to roll the concrete inside the pipe mold 1 when the pipe mold 1 rotates.

[0062] In the above scheme, the radial extrusion ring 62 and the first roller 63 are used to firmly press the fixing ring 61 with the oblique fracture 613 in the radial direction, which is convenient for the high-speed rotation of the pipe mold 1 and can prevent the radial vibration of the pipe mold 1. Then, the axial extrusion ring 64 and the second roller 65 are used to squeeze the two fixing rings 61 from both sides respectively to prevent the pipe mold 1 from axially moving, thereby improving the stability of the pipe mold 1 during high-speed rotation and improving the density of concrete. Moreover, since the fixing ring 61 adopts the oblique fracture 613, on the one hand, there will be no uneven weight in the circumferential direction of the pipe mold 1. During the high-speed rotation of the pipe mold 1, the centrifugal force on the pipe mold 1 at various locations in the circumference is equal, further avoiding the radial vibration of the pipe mold 1. On the other hand, the setting of the oblique fracture 613 allows more first rollers 63 to squeeze the oblique fracture 613, thereby preventing the oblique fracture 613 from being forced to open due to centrifugal force during the high-speed rotation of the pipe mold 1, thereby improving the safety of the large pipe pile segment forming process; further, due to the structural design of the radial extrusion ring 62 and the axial extrusion ring 64, the pipe mold 1 can firstly install the rotating support assembly 6 on the outside of the pipe mold 1 when it is not working, and directly lift the pipe mold 1 with the rotating support assembly 6 to the entire forming equipment when it is needed, thereby saving the preparation time of the pipe mold 1 before work and improving work efficiency.

[0063] The radial extrusion ring 62 includes two radial half rings 621, which are arranged in an upper and lower position. Both ends of one of the radial half rings 621 (located above the tube mold 1) are fixed with a first connecting plate 622, and both ends of the other radial half ring 621 (located below the tube mold 1) are fixed with a second connecting plate 623. The first connecting plate 622 and the second connecting plate 623 are detachably fixedly connected, for example, they can be fixedly connected by bolts.

[0064] The axial extrusion ring 64 includes two axial half rings 641, which are arranged in an upper and lower position. The two ends of one of the axial half rings 641 (located above the tube mold 1) are fixed with a third connecting plate 642, and the two ends of the other axial half ring 641 (located below the tube mold 1) are fixed with a fourth connecting plate 643. The third connecting plate 642 is detachably mounted on the first connecting plate 622, for example, the third connecting plate 642 is detachably mounted on the first connecting plate 622 by bolts, and the fourth connecting plate 643 is detachably mounted on the second connecting plate 623, for example, the fourth connecting plate 643 is detachably mounted on the second connecting plate 623 by bolts.

[0065] The fixed ring 61 also includes a second ring body 612. The two second ring bodies 612 are respectively fixed on two adjacent end faces of the two first ring bodies 611. However, at the position of the oblique fracture 613, the first ring body 611 and the second ring body 612 are in a separated state. The second ring body 612 is provided with a straight fracture 614 that matches the incision 11. The radial straight line where the straight fracture 614 is located passes through the axis of the tube mold 1 and at the same time passes through the straight line where the incision 11 is located.

[0066] A first positioning hole 616 and a second positioning hole 617 are respectively provided on both sides of the oblique fracture 613, and the positioning block 615 is inserted into a chamber formed by the first positioning hole 616 and the second positioning hole 617, and an end face of the positioning block 615 away from the second ring body 612 is flush with an end face of the first ring body 611 away from the second ring body 612, so that the second roller 65 can firmly squeeze the positioning block 615 in the chamber formed by the first positioning hole 616 and the second positioning hole 617; the number of the second rollers 65 needs to ensure that at any time, at least three second rollers 65 are squeezed on the positioning block 615, so that the positioning block 615 can be stably maintained inside the first positioning hole 616 and the second positioning hole 617.

[0067] Furthermore, both ends of the positioning block 615 are provided with a locking protrusion 618, and the inner surfaces of the first positioning hole 616 and the second positioning hole 617 are provided with a locking groove 619 adapted to the locking protrusion 618. The cross-sectional shape of the positioning block 615 is a parallelogram, and the end of the positioning block 615 close to the second ring body 612 is the high end.

[0068] First, the positioning block 615 is set. On the one hand, the second roller 65 is used to firmly squeeze the positioning block 615 in the chamber formed by the first positioning hole 616 and the second positioning hole 617, so that the positioning block 615 will not fall off when the tube mold 1 rotates at a high speed. In addition, the positioning block 615 is used to prevent the first ring bodies 611 on both sides of the oblique fracture 613 from being separated in the radial direction of the tube mold 1. In addition, the positioning protrusion 618 is used to prevent the first ring bodies 611 on both sides of the oblique fracture 613 from being separated to both sides. In this way, the first roller 63 can further place the oblique fracture 613. 3. The pipe mold 1 may accidentally open when it rotates at a high speed. At the same time, since the end of the positioning block 615 close to the second ring body 612 is the high end, when the pipe mold 1 rotates at a high speed, the centrifugal force exerted on the positioning block 615 will make it firmly locked in the chamber formed by the first positioning hole 616 and the second positioning hole 617. Even if part of the second roller 65 is separated from the first ring body 611 and the second roller 65 cannot squeeze the positioning block 615, the positioning block 615 can still be stably placed in the chamber formed by the first positioning hole 616 and the second positioning hole 617.

[0069] The axial semi-ring 641 includes an integrally formed main body portion 6411, a connecting portion 6412 and a bending portion 6413; the outer edge of the radial semi-ring 621 is clamped in the bending groove 6414 formed on the bending portion 6413; an air cavity 6416 is formed between the main body portion 6411 and the first roller 63; an exhaust channel 6415 is formed between the inner edge of the main body portion 6411 and the outer peripheral surface of the tube mold 1; the first roller 63 and the second roller 65 are both hollow structures. When rotating, the first roller 63 introduces external air into the air cavity 6416, and then discharges it through the second roller 65 and the exhaust channel 6415.

[0070] The specific structure and working principle of the first roller 63 and the second roller 65 are as follows:

[0071] The first roller 63 includes a first mounting seat 631 and a first wheel body 632 which are rotatably connected, the first mounting seat 631 being fixedly mounted on the main body 6411; a first through hole 633 is provided inside the first wheel body 632, and a first fan blade 634 is installed inside the first through hole 633; ​​the second roller 65 includes a second mounting seat 651 and a second wheel body 652 which are rotatably connected, the second mounting seat 651 being fixedly mounted on the radial semi-ring 621, a second through hole 653 is provided inside the second wheel body 652, and a second fan blade 654 is installed inside the second through hole 653; further, the aperture of the first through hole 633 is larger than the aperture of the second through hole 653.

[0072] In the above scheme, when the tube mold 1 rotates, the first roller 63 and the second roller 65 will also rotate. Therefore, the first fan blade 634 can transport the low-temperature air in the external environment to the air cavity 6416 through the first through hole 633, and then blow the air in the air cavity 6416 to the exhaust channel 6415 through the second fan blade 654 and the second through hole 653, and finally re-exhaust it into the external environment through the exhaust channel 6415. However, in this process, the flowing air will take away the heat generated by the rolling of the first roller 63, the second roller 65 and the fixed ring 61, ensuring that the first roller 63, the second roller 65 and the fixed ring 61 are kept cool. The roller 65, the fixing ring 61, the radial extrusion ring 62 and the axial extrusion ring 64 can be kept within a safe temperature range for a long time, thereby reducing the wear of these structures and extending the overall service life. Moreover, since the aperture R2 of the first through hole 633 is larger than the aperture R1 of the second through hole 653, the air intake of the first through hole 633 is larger than the exhaust volume of the second through hole 653. Therefore, part of the gas entering the air cavity 6416 through the first through hole 633 will flow through the gap between the two adjacent second rollers 65 to the exhaust channel 6415, and in this process, the heat on the surface of the fixing ring 61 can be taken away.

[0073] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Prestressed concrete large pipe pile segment centrifugal, vibration, roller pressing composite forming equipment, characterized in that: include: The tube mold is horizontally arranged and cylindrical, and a cutout extending along the axial direction is formed through the peripheral wall of the tube mold; A vibration exciter, used for driving the tube mold to vibrate; A rotating support assembly is rotatably sleeved on the outside of the pipe mold to limit the axial and radial jumping of the pipe mold; the rotating support assembly includes two fixed rings sleeved and fixed on the outer peripheral surface of the pipe mold, two radial extrusion rings rotatably connected to the outer peripheral surfaces of the two fixed rings through a plurality of first rollers, and two axial extrusion rings rotatably connected to the two end surfaces separated from the two fixed rings through a plurality of second rollers, the two radial extrusion rings are fixedly connected, and the two axial extrusion rings are detachably clamped on the two radial extrusion rings; the fixed ring includes a first ring body and an oblique fracture opened on the first ring body, and the oblique fracture is connected to the incision at one end close to the pipe mold; A support device for supporting and limiting the rotating support assembly; A driving device, used for driving the tube mold to rotate inside the rotating support assembly; A belt placing machine, which can move along the axial direction of the pipe mold and is used to evenly place concrete inside the pipe mold; A pressing roller is arranged parallel to the axis of the pipe mold and passes through the pipe mold, and is used to roll the concrete inside the pipe mold when the pipe mold rotates; The radial extrusion ring comprises two radial half rings, wherein both ends of one of the radial half rings are fixed with a first connecting plate, and both ends of the other radial half ring are fixed with a second connecting plate, and the first connecting plate and the second connecting plate are detachably fixedly connected; The axial extrusion ring includes two axial half rings, wherein the two ends of one of the axial half rings are fixed with a third connecting plate, and the two ends of the other axial half ring are fixed with a fourth connecting plate, the third connecting plate is detachably mounted on the first connecting plate, and the fourth connecting plate is detachably mounted on the second connecting plate; The fixing ring further comprises a second ring body, two of the second ring bodies are respectively fixed on two adjacent end faces of the two first ring bodies, and the second ring body is provided with a straight cutout matched with the cutout; A first positioning hole and a second positioning hole are respectively opened on both sides of the oblique fracture, and a positioning block is inserted into a cavity formed by the first positioning hole and the second positioning hole, and an end face of the positioning block away from the second ring body is flush with an end face of the first ring body away from the second ring body.

2. The centrifugal, vibration and roller pressing composite forming equipment for prestressed concrete large pipe pile segments according to claim 1 is characterized in that: Both ends of the positioning block are provided with locking protrusions, and the inner surfaces of the first positioning hole and the second positioning hole are provided with locking grooves matched with the locking protrusions.

3. The centrifugal, vibration and roller pressing composite forming equipment for prestressed concrete large pipe pile segments according to claim 2 is characterized in that: The cross-sectional shape of the positioning block is a parallelogram, and the end of the positioning block close to the second ring body is a high end.

4. The centrifugal, vibration and roller pressing composite forming equipment for prestressed concrete large pipe pile segments according to claim 3 is characterized in that: The axial semi-ring comprises an integrally formed main body, a connecting portion and a bending portion, the outer edge of the radial semi-ring is clamped in a bending groove formed on the bending portion, an air cavity is formed between the main body and the first roller, and an exhaust channel is formed between the inner edge of the main body and the outer peripheral surface of the tube mold; The first roller and the second roller are both hollow structures. When rotating, the first roller introduces external air into the air cavity, and then exhausts it through the second roller and the exhaust channel.

5. The centrifugal, vibration and roller pressing composite forming equipment for prestressed concrete large pipe pile segments according to claim 4 is characterized in that: The first roller comprises a first mounting seat and a first wheel body which are rotatably connected, the first mounting seat is fixedly mounted on the main body; a first through hole is formed inside the first wheel body, and a first fan blade is mounted inside the first through hole; The second roller comprises a second mounting seat and a second wheel body which are rotatably connected, the second mounting seat is fixedly mounted on the radial semi-ring, a second through hole is formed inside the second wheel body, and a second fan blade is mounted inside the second through hole; The aperture of the first through hole is larger than the aperture of the second through hole.

6. The centrifugal, vibration and roller pressing composite forming equipment for prestressed concrete large pipe pile segments according to claim 1 is characterized in that: The support device includes a base and a support platform fixed on the base, a vertically telescopic telescopic rod is fixedly installed on the support platform, a pressing plate is arranged at the top end of the telescopic shaft of the telescopic rod, and the pressing plate is used to press down the first connecting plate.

7. The centrifugal, vibration and roller pressing composite forming equipment for prestressed concrete large pipe pile segments according to claim 6 is characterized in that: The driving device comprises a driving shaft assembly and a driven shaft assembly mounted on the base, and the driving shaft assembly and the driven shaft assembly are respectively arranged on the front and rear sides of the tube mold.

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