Reinforced concrete drainage pipe forming device and forming process

Abstract

The invention discloses a concrete and reinforced concrete drainage pipe forming device and a forming process, and relates to the technical field of drainage pipe forming, the concrete and reinforced concrete drainage pipe forming device comprises a steel mold and two symmetrically arranged racks, a forming area is formed between the two racks, and the steel mold is transferred into the forming area and is detachably connected with a forming turntable rotationally arranged on the racks; the forming turntable is driven by a driving source; one side of the rack is provided with a moving trolley used for pushing the pressing roller to stretch into or stretch out of the steel die, after the pressing roller stretches into the steel die, the two ends of the pressing roller are connected with the rack through connecting units, and a forming gap is formed between the outer side wall of the pressing roller and the inner side wall of the steel die. The connecting unit comprises a constant-pressure oil cylinder arranged on the rack, the free end of a piston rod of the constant-pressure oil cylinder is fixedly connected with a hanging ring, and the hanging ring is rotationally connected with the end of the pressing roller. According to the pipe making machine, vibration and noise in the pipe making process are reduced, and meanwhile, the quality of concrete and reinforced concrete drainage pipes is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of the preparation of concrete and reinforced concrete drain pipes, and specifically relates to a forming device and a forming process for concrete and reinforced concrete drain pipes. Background Art

[0002] Concrete and reinforced concrete drain pipes have excellent corrosion resistance and are widely used in multiple fields such as urban municipal drainage, sewage disposal, electricity, agricultural irrigation, chemical industry, gas, and mines. At present, processes such as suspension roll pipe making, core mold vibration pipe making, and radial extrusion pipe making are mostly used to produce concrete and reinforced concrete drain pipes. Among them, the noise and vibration are too large during the processes of suspension roll pipe making and core mold pipe making. At the same time, due to the inconsistent stress conditions of the concrete at each position of the drain pipe, there are air holes inside the drain pipe; the radial extrusion pipe making has too high requirements for materials, cannot make full use of the materials, causes waste of energy and resources, and has a high cost. Summary of the Invention

[0003] The purpose of the present invention is to provide a forming device and a forming process for concrete and reinforced concrete drain pipes, which reduce the vibration and noise during the pipe making process, and at the same time improve the quality of concrete and reinforced concrete drain pipes.

[0004] To achieve the above purpose, the specific solution adopted by the present invention is as follows: A forming device for concrete and reinforced concrete drain pipes includes a steel mold and two symmetrically arranged frames. A forming area is formed between the two frames. The steel mold is moved into the forming area and is detachably connected to a forming turntable rotatably arranged on the frame. The forming turntable is driven by a driving source; a moving vehicle for pushing a pressure roller to extend into or out of the steel mold is arranged on one side of the frame. After the pressure roller extends into the steel mold, both ends of the pressure roller are connected to the frame through a connecting unit, and there is a forming gap between the outer side wall of the pressure roller and the inner side wall of the steel mold; the connecting unit includes a constant pressure oil cylinder arranged on the frame. A lifting ring is fixedly connected to the free end of the piston rod of the constant pressure oil cylinder, and the lifting ring is rotatably connected to the end of the pressure roller; a feeder for feeding materials into the steel mold under the control of a control unit is arranged on the other side of the frame.

[0005] As an optimized scheme of the above-mentioned forming device for concrete and reinforced concrete drain pipes: The driving source is a driving motor, and the motor shaft of the driving motor is drivingly connected with a driving gear, and a driven gear meshing with the driving gear is coaxially arranged on the forming turntable.

[0006] As another optimized scheme of the above-mentioned forming device for concrete and reinforced concrete drain pipes: A clamping ring for fixing the steel mold is coaxially arranged on the side of the forming turntable facing the forming area, and a plurality of telescopic heads evenly distributed along the circumferential direction thereof are arranged on the forming turntable, and the end of the telescopic head is fixedly connected to the clamping ring.

[0007] As another optimization solution for the above-mentioned concrete and reinforced concrete drain pipe forming device: positioning rings are provided on the outer side walls at both ends of the steel mold, and the outer diameter of the positioning ring has a taper, which is in tapered fit with the clamping ring.

[0008] As another optimization solution for the above-mentioned concrete and reinforced concrete drain pipe forming device: a bracket is provided between the mobile vehicle and the frame, and a roller for supporting the pressing roller is rotatably provided at the top of the bracket.

[0009] As another optimization solution for the above-mentioned concrete and reinforced concrete drain pipe forming device: two guide rails extending along the axial direction of the pressing roller are provided on one side of the frame, and the mobile vehicle reciprocates along the guide rails.

[0010] As another optimization solution for the above-mentioned concrete and reinforced concrete drain pipe forming device: the steel mold is of a cylindrical structure.

[0011] As another optimization solution for the above-mentioned concrete and reinforced concrete drain pipe forming device: a feeding nozzle capable of extending into or out of the steel mold is provided on the feeder.

[0012] A forming process for concrete and reinforced concrete drain pipes, which is based on the above-mentioned concrete and reinforced concrete drain pipe forming device, includes the following steps:

[0013] S1. Transfer the steel mold to the forming area and install it on the forming turntable.

[0014] S2. The mobile vehicle moves the pressing roller into the steel mold to form a forming gap between the inner side wall of the steel mold and the outer side wall of the pressing roller.

[0015] S3. The steel mold rotates at a set feeding speed, and the feeder evenly feeds concrete into the steel mold. The concrete entering the steel mold is evenly distributed on the inner side wall of the steel mold under the action of centrifugal force. When the thickness of the concrete is equal to the value of the forming gap, the pressing roller is pressurized and starts to rotate and roll the concrete.

[0016] S4. After the force on the pressing roller reaches the preset value of the constant pressure oil cylinder, the control unit controls the feeder to stop feeding.

[0017] S5. The steel mold continues to rotate. After the concrete is rolled and compacted, it stops rotating, and the steel mold is removed from the forming area.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a forming device and a forming process for concrete and reinforced concrete drain pipes. The steel mold is moved into the forming area and installed on the forming turntable. The moving vehicle pushes the pressure roller into the steel mold, and both ends of the pressure roller are rotatably connected to the suspension rings. The feeder feeds materials into the steel mold, and the steel mold rotates to make pipes, reducing the vibration and noise during the pipe-making process. When the thickness of the concrete is equal to the value of the forming gap, the pressure roller starts to rotate and roll the concrete to compact it. At this time, the pressure roller is under pressure. As the amount of concrete in the steel mold increases, after the force on the pressure roller reaches the set value of the constant pressure oil cylinder, the control unit controls the feeder to stop feeding. The setting of the pressure roller improves the quality of concrete and reinforced concrete drain pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0021] Figure 2 is a top view of the present invention;

[0022] Figure 3 is Figure 1 a partial enlarged view of;

[0023] Figure 4 is a schematic structural diagram of Embodiment 2 of the present invention;

[0024] Figure 5 is Figure 4 a partial enlarged view of;

[0025] REFERENCE SIGNS: 1, steel mold; 101, fixed pin seat; 102, mounting hole; 103, anti-slip groove; 2, frame; 201, bearing; 3, concrete; 4, pin; 401, connecting plate; 402, telescopic head; 403, first oil cylinder; 5, second oil cylinder; 501, suspension ring; 6, pressure roller; 7, forming turntable; 701, driven gear; 8, drive source; 801, driving gear; 10, moving vehicle; 1001, guide rail; 11, supporting roller; 12, feeder; 1201, feeding nozzle; 1202, slide rail; 13, snap ring; 14, anti-slip unit; 1401, mounting cylinder; 1402, anti-slip pin; 1403, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following further elaborates on the technical solutions of the present invention in combination with specific embodiments. For parts not detailedly described and disclosed in the following embodiments of the present invention, they should all be understood as the prior art known or should be known to those skilled in the art, such as how the control unit controls the feeder 12 to feed materials into the steel mold 1, how the control unit controls the feeder 12 to stop feeding, and how the steel mold moves into and out of the forming area, etc.

[0027] Embodiment 1

[0028] A forming device for concrete and reinforced concrete drain pipes, comprising a steel mold 1 and two symmetrically arranged frames 2. Among them, the steel mold 1 is in a cylindrical structure, and in this example, the steel mold 1 is in a socket type structure. A forming area is formed between the two frames 2. The steel mold 1 is transferred into the forming area and is detachably connected to a forming turntable 7 rotatably arranged on the frame 2. The forming turntable 7 is driven by a driving source 8. Specifically, the steel mold 1 is transported into the forming area, and the axis of the steel mold 1 coincides with the axis of the forming turntable 7. The positioning rings at both ends of the steel mold 1 are respectively installed on the snap rings of the corresponding forming turntables 7. After the concrete and reinforced concrete drain pipes are formed, the steel mold 1 is separated from the forming turntable 7 and transferred to the next working station.

[0029] In this embodiment, the connection mode between the forming turntable 7 and the frame 2 is fixed by bearings. The frame 2 is installed on the outer bearing seat of the bearing. A plurality of first oil cylinders 403 are evenly distributed and installed on the outer circumference of the frame 2. The inner ring of the bearing installs the forming turntable 7. A telescopic head 402 is installed on the forming turntable 7, and a steel mold positioning snap ring 13 is installed on the telescopic head 402. As Figure 1 shown, the forming turntable 7 is connected to the frame 2 through a bearing 201. The inner ring of the bearing 201 is sleeved on the outer side wall of the annular part of the forming turntable 7, and the outer ring bearing seat of the bearing 201 is fixedly connected to the frame 2. The two forming turntables 7 on both sides are concentric.

[0030] The forming turntable 7 is detachably connected to the steel mold 1. The method is that a snap ring 13 for fixing the steel mold 1 is coaxially arranged on the side of the forming turntable 7 facing the forming area. A plurality of first oil cylinders 403 are arranged on the frame 2 and are evenly distributed along its circumferential direction. The first oil cylinders 403 are movably connected to the telescopic heads 402, and the ends of the telescopic heads 402 are fixedly connected to the snap ring 13. In this embodiment, the inner conical surface of the snap ring 13 is equivalent to the outer conical surface of the end of the steel mold 1. The first oil cylinder 403 pulls the telescopic head 402, and the telescopic head 402 drives the snap ring 13 to be detachably connected to the steel mold 1. As Figure 1 shown, taking the snap ring 13 on the left forming turntable 7 as an example, before the steel mold 1 is installed, the first oil cylinder 403 drives the telescopic head 402 to pull the snap ring 13 to move leftward, so as to separate the snap ring 13 from the end positioning ring of the steel mold 1. After the steel mold 1 is transferred to the forming area, the first oil cylinder 403 pushes the telescopic head 402 to extend, and the telescopic head 402 drives the snap ring 13 to move rightward and sleeved on the end positioning ring of the steel mold 1 to complete the installation of the steel mold 1; after the pipe making is completed, the first oil cylinder 403 pulls the telescopic head 402 to retract, drives the snap ring 13 to move leftward to separate from the steel mold 1, and the steel mold 1 is transferred to the next working station. The inner ring of the snap ring 13 has a taper, and the taper is equal to that of the positioning ring of the steel mold 1, and the two are taper - fitted.

[0031] A plurality of anti-slip units 14 are arranged on the snap ring 13 and distributed along its circumferential direction to ensure that the steel mold 1 and the snap ring 13 rotate synchronously. The anti-slip unit 14 includes a mounting cylinder 1401 fixedly connected to the snap ring 13 and having one end closed and one end open, and an anti-slip pin 1402 slidably connected to the mounting cylinder 1401. The mounting cylinder 1401 is a circular cylindrical structure, and the open end of the mounting cylinder faces the outer wall of the snap ring. The connection mode between the mounting cylinder and the snap ring is bolt connection. A spring 1403 is arranged in the mounting cylinder 1401 to push one end of the anti-slip pin 1402 to abut against the outer wall of the steel mold 1. A through hole for the anti-slip pin 1402 to pass through is formed in the snap ring 13. The spring 1403 pushes one end of the anti-slip pin 1402 to extend out of the mounting cylinder 1401 and pass through the snap ring 13 to abut against the outer wall of the steel mold 1, preventing the steel mold 1 from slipping in the snap ring 13 and ensuring that the steel mold 1 and the snap ring 13 rotate synchronously. An arc portion is arranged at one end of the anti-slip pin 1402 extending out of the mounting cylinder 1401, and the arc portion is located on the side of the anti-slip pin 1402 facing the forming area. A limiting platform is arranged at one end of the anti-slip pin 1402 extending into the mounting cylinder 1401 to limit the length of the anti-slip pin 1402 extending out of the mounting cylinder 1401. As Figure 3 shown, when the steel mold 1 is installed, the snap ring 13 slides from right to left. The arc portion first contacts the end of the steel mold 1. As the snap ring 13 continues to move, the steel mold 1 pushes the anti-slip pin 1402 into the mounting cylinder 1401 until the snap ring 13 moves to the required position. At this time, the anti-slip pin 1402 abuts against the side wall of the steel mold 1 under the action of the spring 1403.

[0032] In this embodiment, a plurality of grooves 103 are formed on the outer wall of the steel mold 1 and distributed along its circumferential direction. The grooves 103 correspond to the anti-slip units one by one. One end of the anti-slip pin 1402 extending out of the mounting cylinder 1401 abuts against the bottom of the groove 103, further ensuring that the steel mold 1 and the snap ring 13 rotate synchronously.

[0033] In this embodiment, the drive source 8 is arranged on one of the racks 2. As Figure 1 shown, the drive source 8 is arranged on the right rack 2. The drive source 8 is a drive motor. The motor shaft of the drive motor is drivingly connected with a driving gear 801. A driven gear 701 meshing with the driving gear 801 is coaxially arranged on the forming turntable 7. The driven gear 701 is fixedly sleeved on the outer wall of the annular portion of the forming turntable 7. The drive motor drives the forming turntable 7 to rotate, and the forming turntable 7 drives the steel mold 1 to rotate synchronously to realize the forming of the concrete 3.

[0034] On one side of the frame 2, there is a moving cart 10 for pushing the pressure roller 6 into or out of the steel mold 1. The axis of the pressure roller 6 is parallel to the axis of the forming turntable 7. After the pressure roller 6 extends into the steel mold 1, both ends of the pressure roller 6 are connected to the frame 2 through a connecting unit, and there is a forming gap between the outer wall of the pressure roller 6 and the inner wall of the steel mold 1. The connecting unit includes a constant-pressure oil cylinder 5 arranged on the frame 2. The free end of the piston rod of the constant-pressure oil cylinder 5 is fixedly connected with a lifting ring 501, and the lifting ring 501 is rotatably connected to the end of the pressure roller 6. The head of the pressure roller 6 passes through a lifting ring 501, the steel mold 1, and another lifting ring 501 in sequence. The pressure roller 6 is moved to the required position by the constant-pressure oil cylinder 5, so that a forming gap is formed between the outer wall of the pressure roller 6 and the inner wall of the steel mold 1, and the width of the forming gap is equal to the wall thickness of the concrete drain pipe. As Figure 1 shown, on one side of the frame 2, there are two parallel guide rails 1001. The guide rails 1001 extend along the direction parallel to the axis of the pressure roller 6. The moving cart 10 can reciprocate on the guide rails 1001 to push the pressure roller 6 into or out of the steel mold 1.

[0035] In this embodiment, a bracket is arranged between the moving cart 10 and the frame 2. The top end of the bracket is rotatably provided with a supporting roller 11 for supporting the pressure roller 6. After the pipe making is completed, the constant-pressure oil cylinder 5 drives the pressure roller 6 to move down to the supporting roller 11, and then the pressure roller 6 is moved out of the steel mold 1 by the moving cart 10.

[0036] On the other side of the frame 2, there is a feeder 12 controlled by a control unit to feed materials into the steel mold 1. The feeder 12 is provided with a feeding nozzle 1201 that can extend into or out of the steel mold 1. On this side, there are two parallel slide rails 1202. The feeder 12 reciprocates along the slide rails 1202 to drive the feeding nozzle 1201 to extend into or out of the steel mold 1. Specifically, the feeding nozzle 1201 extends into the steel mold 1 to feed concrete 3 into the steel mold 1; after the feeding nozzle 1201 finishes feeding, it extends out of the steel mold 1.

[0037] In this embodiment, a pressure sensor for detecting the force on the pressure roller 6 is arranged on the pressure roller 6.

[0038] Embodiment 2

[0039] This embodiment is an improvement on the embodiment 1, and its main structure is the same as that of the embodiment 1, and the improvements are as follows: the forming turntable 7 and the steel mold 1 are detachably connected, and a plurality of mounting holes 102 are provided at both ends of the steel mold 1. In this embodiment, two mounting holes 102 are provided at each end of the steel mold 1, and the two mounting holes 102 at the same end are symmetrically arranged along the axis of the steel mold 1; pins 4 are slidably arranged on the forming turntable 7, and each pin 4 drives the telescopic head to extend into or out of the mounting hole 102 through the first oil cylinder 403 corresponding thereto. A plurality of pins 4 are provided on each forming turntable 7, and the pins 4 are evenly arranged along the axis of the forming turntable 7, and the axis of the pins 4 are parallel to the axis of the forming turntable 7. The pins 4 are connected to the telescopic head 402 via a connecting plate 401, that is, the end of the telescopic head 402 is fixedly connected to the connecting plate 401, and one end of the pin 4 is fixed to the connecting plate 401. Figure 4 As shown, taking the pin 4 on the left forming turntable 7 as an example, before the steel mold 1 is installed, the first oil cylinder 403 drives the telescopic head to pull the pin 4 to move to the left. After the steel mold 1 is moved to the forming area, the first oil cylinder 403 pushes the telescopic head 402 to extend, pushes the pin 4 to move to the right and extend into the corresponding installation hole 102, and completes the installation of the steel mold 1; after the pipe making is completed, the first oil cylinder 403 drives the telescopic head 402 to retract, pulls the pin 4 to move to the left and extend out of the installation hole 102, and the steel mold 1 moves to the next workstation.

[0040] Example 3

[0041] This embodiment is an improvement on the embodiment 2, and its main structure is the same as that of the embodiment 2, with the improvement being that a plurality of fixing pin seats 101 are fixedly connected to the outer wall of the steel mold 1, the axis of the fixing pin seat 101 is parallel to the axis of the steel mold 1, the mounting hole 102 is coaxially opened on the fixing pin seat 101, the fixing pin seat 101 is a cylindrical structure, and the fixing pin seat 101 is connected to the outer wall of the steel mold 1 by welding.

[0042] Example 4

[0043] A concrete and reinforced concrete drainage pipe forming process, the forming process is based on a concrete and reinforced concrete drainage pipe forming device recorded in any one of embodiments 1-2, and comprises the following steps:

[0044] S1, transfer the steel mold 1 to the molding area and install it on the molding turntable 7; specifically, after the steel mold 1 enters the molding area, the first oil cylinder 403 pushes the telescopic head to drive the pin 4 to insert into the corresponding installation hole 102, thereby realizing the installation of the steel mold 1 and the molding disk.

[0045] In S2, the mobile vehicle 10 moves the pressure roller 6 into the steel mold 1. Both ends of the pressure roller 6 are located within the lifting rings 501 and are rotatably connected to the lifting rings 501. The pressure roller 6 is lifted to the required position by the constant-pressure oil cylinder 5, so as to form a forming gap between the inner side wall of the steel mold 1 and the outer side wall of the pressure roller 6. The size of the forming gap is equal to the wall thickness of the concrete and reinforced concrete drain pipes.

[0046] In S3, the feeder 12 moves so that the feeding nozzle 1201 extends into the steel mold 1. The steel mold 1 rotates at a set cloth-feeding speed. The feeder 12 uniformly feeds the concrete 3 into the steel mold 1. The concrete 3 entering the steel mold 1 is evenly distributed on the inner side wall of the steel mold 1 under the action of centrifugal force. When the thickness of the concrete 3 is equal to the value of the forming gap, the pressure roller 6 is pressurized and starts to rotate and roll the concrete 3;

[0047] In S4, after the force on the pressure roller 6 reaches the preset value of the constant-pressure oil cylinder 5, the control unit controls the feeder 12 to stop feeding;

[0048] In S5, the steel mold 1 continues to rotate until the concrete is rolled and compacted, and then stops rotating and is moved out of the forming area.

[0049] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A concrete and reinforced concrete drainage pipe forming device, comprising a steel mold (1) and two symmetrically arranged frames (2), characterized in that: A molding area is formed between the two frames (2), and the steel mold (1) is transferred to the molding area and detachably connected to a molding turntable (7) rotatably arranged on the frame (2), and the molding turntable (7) is driven by a driving source (8); a moving vehicle (10) is arranged on one side of the frame (2) for pushing a pressing roller (6) to extend into or out of the steel mold (1), and after the pressing roller (6) extends into the steel mold (1), both ends of the pressing roller (6) are connected to the frame (2) through a connecting unit, and a molding gap is provided between the outer wall of the pressing roller (6) and the inner wall of the steel mold (1); the connecting unit comprises a constant pressure oil cylinder arranged on the frame (2), and the free end of the piston rod of the constant pressure oil cylinder is fixedly connected to a lifting ring (501), and the lifting ring (501) is rotatably connected to the end of the pressing roller (6); a feeder (12) is arranged on the other side of the frame (2) and is controlled by a control unit to feed materials into the steel mold (1).

2. A concrete and reinforced concrete drainage pipe forming device as claimed in claim 1, characterized in that: The driving source (8) is a driving motor, the motor shaft of which is drivingly connected to a driving gear (801), and the forming turntable (7) is coaxially provided with a driven gear (701) meshing with the driving gear (801).

3. A concrete and reinforced concrete drainage pipe forming device as claimed in claim 1, characterized in that: A clamping ring (13) for fixing the steel mold (1) is coaxially arranged on one side of the molding turntable (7) facing the molding area. The molding turntable (7) is provided with a plurality of telescopic heads (402) evenly distributed along its circumference, and the ends of the telescopic heads (402) are fixedly connected to the clamping ring (13).

4. A concrete and reinforced concrete drainage pipe forming device as claimed in claim 3, characterized in that: The outer side walls at both ends of the steel mold (1) are provided with positioning rings, the outer diameter of which is tapered and matches the tapered shape of the clamping ring (13).

5. A concrete and reinforced concrete drainage pipe forming device as claimed in claim 1, characterized in that: A bracket is provided between the mobile vehicle (10) and the frame (2), and a roller (11) for supporting the pressure roller (6) is rotatably provided at the top of the bracket.

6. A concrete and reinforced concrete drainage pipe forming device as claimed in claim 1, characterized in that: Two guide rails (1001) extending along the axial direction of the pressure roller (6) are arranged on one side of the frame (2), and the moving vehicle (10) reciprocates along the guide rails (1001).

7. A concrete and reinforced concrete drainage pipe forming device as claimed in claim 1, characterized in that: The steel mold (1) is a cylindrical structure.

8. A concrete and reinforced concrete drainage pipe forming device as claimed in claim 1, characterized in that: The feeder (12) is provided with a feeding nozzle (1201) capable of extending into or out of the steel mold (1).

9. A concrete and reinforced concrete drainage pipe forming process, the forming process is based on a concrete and reinforced concrete drainage pipe forming device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, transfer the steel mold 1 to the molding area and install it on the molding turntable (7); S2, the moving vehicle (10) moves the pressing roller (6) into the steel mold (1) so that a forming gap is formed between the inner wall of the steel mold (1) and the outer wall of the pressing roller (6); S3, the steel mold (1) rotates at a set distribution speed, and the feeder (12) feeds concrete (3) into the steel mold (1). The concrete (3) entering the steel mold (1) is evenly distributed on the inner wall of the steel mold (1) under the action of centrifugal force. When the thickness of the concrete (3) is equal to the value of the forming gap, the pressing roller (6) is subjected to pressure and starts to rotate to roll the concrete (3); S4, after the pressure on the pressure roller (6) reaches a preset value of the constant pressure cylinder, the control unit controls the feeder (12) to stop feeding; S5, the steel mold (1) continues to rotate until the concrete is compacted by rollers, then stops rotating and moves out of the molding area.

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