Rolling pipe making machine for concrete and reinforced concrete drainage pipes

Abstract

A rolling pipe making machine for concrete and reinforced concrete drainage pipes comprises a steel mold and two symmetrically-arranged racks, each rack is rotationally provided with a coaxial forming rotary disc, the forming rotary discs are driven by driving sources arranged on the racks, and the steel mold is detachably connected with the forming rotary discs; one side of the rack is provided with a moving trolley used for pushing the compression roller to extend into or out of the steel die, after the compression roller extends into the steel die, the axis of the compression roller is parallel to the axis of the steel die, and a forming gap is formed between the outer side wall of the compression roller and the inner side wall of the steel die; according to the concrete drainage pipe manufacturing machine, vibration and noise in the pipe manufacturing process are reduced, and meanwhile the quality of a concrete drainage pipe is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete drainage pipe preparation technology, specifically a roller pressing machine for concrete and reinforced concrete drainage pipes. Background Technology

[0002] Concrete drainage pipes have excellent corrosion resistance and are widely used in urban municipal rainwater drainage, sewage drainage, power, agricultural irrigation, chemical, gas, mining and other fields. At present, concrete drainage pipes are mostly produced using processes such as roller forming, core molding, and radial extrusion forming. Among them, roller forming and core molding produce too much noise and vibration. At the same time, the uneven stress on the concrete at different locations in the drainage pipe leads to the presence of air pores inside the pipe. Radial extrusion forming has excessively high material requirements, cannot make full use of materials, causes energy and resource waste, and has high costs. Utility Model Content

[0003] The purpose of this invention is to provide a roller pressing machine for concrete and reinforced concrete drainage pipes, which reduces vibration and noise during the pipe making process, and at the same time improves the quality of concrete and reinforced concrete drainage pipes.

[0004] To achieve the above objectives, the specific solution adopted by this utility model is as follows: a roller pressing machine for concrete and reinforced concrete drainage pipes, comprising a steel mold and two symmetrically arranged frames, characterized in that: each frame is rotatably equipped with a coaxial forming turntable, which is driven by a drive source set on the frame; the steel mold and the forming turntable can be detachably connected; a moving vehicle for pushing the pressing roller into or out of the steel mold is provided on one side of the frame; after the pressing roller enters the steel mold, the axis of the pressing roller is parallel to the axis of the steel mold, and there is a forming gap between the outer wall of the pressing roller and the inner wall of the steel mold; a feeder for feeding concrete into the steel mold is provided on the other side of the frame.

[0005] As an optimized solution for the roller pressing machine for concrete and reinforced concrete drainage pipes mentioned above: the driving source is a drive motor, the motor shaft of the drive motor is connected to a drive gear, and the forming turntable is coaxially provided with a driven gear that meshes with the drive gear.

[0006] As another optimized solution for the roller pressing machine for concrete and reinforced concrete drainage pipes mentioned above: multiple insertion holes are opened at both ends of the steel mold, and pins are slidably arranged on the forming turntable. Each pin is driven by a corresponding first oil cylinder to extend or extend into the insertion hole.

[0007] As another optimized solution for the roller pressing machine for concrete and reinforced concrete drainage pipes mentioned above: the first oil cylinder is fixed on the frame, the first oil cylinder is movably connected to a telescopic head, the end of the telescopic head is fixedly connected to a connecting plate, and one end of the pin is fixed to the connecting plate.

[0008] As another optimized solution for the roller pressing machine for concrete and reinforced concrete drainage pipes mentioned above: multiple fixed pin seats corresponding one-to-one with the pins are fixedly connected to the outer wall of the steel mold, and the insertion holes are opened on the fixed pin seats.

[0009] As another optimized solution for the roller pressing machine for concrete and reinforced concrete drainage pipes mentioned above: a support is provided between the mobile vehicle and the machine frame, and a support roller for supporting the pressing roller is rotatably provided at the top of the support.

[0010] As another optimized solution for the roller pressing machine for concrete and reinforced concrete drainage pipes mentioned above: two guide rails extending along the axial direction of the pressing rollers are provided on one side of the frame, and the moving vehicle reciprocates along the guide rails.

[0011] As another optimized solution for the roller pressing machine for concrete and reinforced concrete drainage pipes mentioned above: the feeder is equipped with a feeding nozzle that can extend into or out of the steel mold.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model provides a roller pressing machine for concrete and reinforced concrete drainage pipes. When preparing concrete drainage pipes, a steel mold is moved between two frames and can be detachably connected to the forming turntable. After the steel mold is installed, a moving vehicle pushes the pressure roller into the steel mold, and there is a forming gap between the outer wall of the pressure roller and the inner wall of the steel mold. The feeder feeds material into the steel mold, and the steel mold rotates, reducing vibration and noise during the pipe making process. When the feeding amount exceeds the wall thickness of the drainage pipe, the pressure roller starts to rotate and press the concrete. The pressure roller compacts the concrete, improving the quality of the concrete drainage pipe. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0015] Figure 2 This is a top view of the present invention;

[0016] Figure 3 yes Figure 1 A magnified view of a portion of the image;

[0017] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0018] Figure 5 yes Figure 4 A magnified view of a portion of the image;

[0019] Reference numerals: 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 hydraulic cylinder; 5. Second hydraulic cylinder; 501. Lifting ring; 6. Pressure roller; 7. Forming turntable; 701. Driven gear; 8. Drive source; 801. Drive gear; 10. Moving cart; 1001. Guide rail; 11. Idler 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 Implementation

[0020] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. The parts of this utility model that are not described or disclosed in detail in the following embodiments should be understood as prior art known or should be known by those skilled in the art, such as how the steel mold 1 is moved into and out of the forming area, how the moving vehicle transports the pressure roller 6, and how the pressure roller 6 is installed on the moving vehicle, etc.

[0021] Example 1

[0022] A roller pressing machine for concrete and reinforced concrete drainage pipes includes a steel mold 1 and two symmetrically arranged frames 2. The steel mold 1 has a cylindrical structure, and in this embodiment, it is a socket-type structure. Each frame 2 has a coaxial forming turntable 7 rotatably mounted on it. A central hole for mounting bearing seats is provided at the center of each frame 2. Figure 1 As shown, the forming turntable 7 is installed on the inner ring of the bearing housing. The forming turntable 7 includes an annular portion. A boss is provided on the outer side wall of the end of the annular portion facing the other frame 2. The boss and the annular portion are connected as a single unit. The forming turntable 7 is connected to the frame 2 through the bearing 201. The inner ring of the bearing 201 is fitted on the outer side wall of the annular portion of the forming turntable 7.

[0023] The steel mold 1 and the forming turntable 7 are detachably connected. During the fabrication of the concrete drainage pipe, the steel mold 1 is connected to the forming turntable 7. After fabrication, the steel mold 1 is detached from the forming turntable 7 and transported to the next station for demolding. In this embodiment, the steel mold 1 is moved into the forming area and installed on the forming turntable. After the concrete drainage pipe is formed, the steel mold 1 is detached from the forming turntable 7 and moved out of the forming area.

[0024] The forming turntable 7 is connected to the steel mold 1 in the following way: multiple insertion holes 102 are opened at both ends of the steel mold 1. In this embodiment, multiple fixing pin seats 101 are fixedly connected to the outer side 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 insertion holes 102 are 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 side wall of the steel mold 1 by welding. Pins 4 are slidably arranged on the forming turntable 7. Each pin 4 is driven by a corresponding first hydraulic cylinder 403 to extend or retract a telescopic head into or out of the insertion hole 102. In this embodiment, multiple pins 4 are arranged on each forming turntable 7. The pins 4 are symmetrically arranged along the axis of the forming turntable 7. Correspondingly, the number of fixed pin seats 101 on the steel mold 1 and the number of pins 4 and telescopic heads are the same as the number of pins 4. The first hydraulic cylinder 403 is arranged on the frame 2, and the telescopic head 402 is arranged on the forming turntable 7. The pins 4 are fixedly connected to the telescopic head 401. Specifically, a connecting plate 401 is fixedly connected to the end of the telescopic head 401, and one end of the pin 4 is fixed to the connecting plate 401. Before the steel mold 1 is installed, taking the pin 4 on the left forming turntable 7 as an example, the first hydraulic cylinder 403 drives the telescopic head 402, which in turn drives the pin 4 to move to the left, moving the steel mold 1 between the two frames 2 and making the steel mold 1 coaxial with the forming turntable 7. Then, the telescopic head 402 extends, pushes the pin 4 to move to the right and inserts it into the insertion hole 102 of the corresponding fixed pin seat 101, thus completing the installation of the steel mold 1. After the tube is made, the first hydraulic cylinder 403 drives the telescopic head 402 to retract, and the telescopic head 402 drives the pin 4 to move to the left and extend it out of the insertion hole 102, thus moving the steel mold 1 to the next station.

[0025] One of the forming turntables 7 is driven by a drive source 8 set on the frame 2. Specifically, the drive source 8 is a drive motor. The motor shaft of the drive motor is connected to a drive gear 801. The forming turntable 7 is coaxially provided with a driven gear 701 that meshes with the drive gear 801. The driven gear 701 is fixedly sleeved on the outer wall of the annular part 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 concrete 3.

[0026] A moving carriage 10 is provided on one side of the frame 2 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 is inserted into the steel mold 1, both ends of the pressure roller 6 are rotatably connected to the frame 2. At the same time, the axis of the pressure roller 6 is parallel to the axis of the steel mold 1, and there is a forming gap between the outer wall of the pressure roller 6 and the inner wall of the steel mold 1. Specifically, each frame 2 is provided with a lifting ring 501 for installing the pressure roller 6, and each frame 2 is provided with a second hydraulic cylinder 5. The lifting ring 501 is fixedly connected to the free end of the piston rod of the second hydraulic cylinder 5. The head of the pressure roller 6 passes through one lifting ring 501, the steel mold 1, and another lifting ring 501 in sequence. The second hydraulic cylinder 5 moves the pressure roller 6 to the required position, 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. The width of the forming gap is equal to the wall thickness of the concrete drainage pipe. Figure 1 As shown, two parallel guide rails 1001 are provided on one side of the frame 2. The guide rails 1001 extend in a direction parallel to the axis of the pressure roller 6. The moving carriage 10 can move back and forth on the guide rails 1001 to push the pressure roller 6 into or out of the steel mold 1.

[0027] In this embodiment, a support is provided between the mobile carriage 10 and the frame 2. The top of the support is rotatably provided with a support roller 11 for supporting the pressure roller 6. After the tube is made, the second oil cylinder 5 drives the pressure roller 6 to move down onto the support roller 11, and then the mobile carriage 10 moves the pressure roller 6 out of the steel mold 1.

[0028] On the other side of the frame 2, a feeder 12 for feeding concrete 3 into the steel mold 1 is provided. The feeder 12 is provided with a feeding nozzle 1201 that can extend into or out of the steel mold 1. Two parallel slide rails 1202 are provided on this side. The feeder 12 moves back and forth along the slide rails 1202, driving 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 is finished, the feeding nozzle 1201 extends out of the steel mold 1.

[0029] The pipe-making process of this utility model is as follows: the steel mold 1 is moved between the two frames 2 and coaxial with the forming turntable 7. The first hydraulic cylinder 403 pushes the telescopic head, which drives the pin 4 to insert into the corresponding insertion hole 102, thus realizing the installation of the steel mold 1 and the forming turntable 7. After the steel mold 1 is completed, the moving carriage 10 pushes the pressure roller 6 through the lifting ring 501 and into the steel mold 1. The second hydraulic cylinder 5 drives the pressure roller 6 to move to the required position. At this time, there is a forming gap between the outer wall of the pressure roller 6 and the inner wall of the steel mold 1, and the forming gap is the same as the wall thickness of the concrete drainage pipe. The feeder 12 moves along the slide rail 1202 so that the feeding nozzle 1201 extends into the steel mold 1. 12. Material is fed into the steel mold 1 and the steel mold 1 rotates to reduce vibration and noise during the pipe making process. During the rotation of the steel mold 1, the concrete 3 is thrown onto its inner wall and forms a certain thickness. When the thickness of the concrete 3 is equal to the width of the forming gap, the inner wall of the concrete 3 contacts the pressure roller 6 and drives the pressure roller 6 to rotate under the action of friction, thus compacting the concrete 3 and improving the quality of the concrete drainage pipe. After the forming is completed, the second oil cylinder 5 drives the pressure roller 6 to move down to the support roller 11, and the moving car 10 drives the pressure roller 6 to move out of the steel mold 1. The first oil cylinder 403 drives the telescopic head, and the telescopic head drives the pin 4 to extend out of the insertion hole 102, moving the steel mold 1 to the next station.

[0030] Example 2

[0031] This embodiment is an improvement on Embodiment 1. Its main structure is the same as Embodiment 1, but the improvement lies in the detachable connection between the forming turntable 7 and the steel mold 1. This is achieved by having a retaining ring 13 coaxially arranged on the side of the forming turntable 7 facing the forming area to fix the steel mold 1. The forming turntable 7 has multiple telescopic heads 402 distributed circumferentially on it, and the ends of the telescopic heads 402 are all fixedly connected to the retaining ring 13. In this embodiment, the retaining ring 13 and the tapered end of the steel mold 1 are detachably connected, such as... Figure 4 As shown, taking the retaining ring 13 on the left forming turntable 7 as an example, before the steel mold 1 is installed, the first hydraulic cylinder 403 drives the telescopic head, which in turn moves the retaining ring 13 to the left. After the steel mold 1 is moved to the forming area, the first hydraulic cylinder 403 drives the telescopic head 401 to extend, pushing the retaining ring to the right and fitting it onto the positioning ring at the end of the steel mold 1, thus completing the installation of the steel mold 1. After the tube is made, the first hydraulic cylinder 403 drives the telescopic head 401 to retract, and the telescopic head moves the retaining ring 13 to the left to separate it from the steel mold 1, and the steel mold 1 is moved to the next station.

[0032] The retaining ring 13 is provided with multiple anti-slip units 14 distributed circumferentially to ensure that the steel mold 1 rotates synchronously with the retaining ring 13. The anti-slip unit 14 includes a mounting cylinder 1401 fixedly connected to the retaining ring 13 with one end closed and the other 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 retaining ring. The mounting cylinder and the retaining ring are connected by bolts. A spring 1403 is provided inside 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. The retaining ring 13 is provided with a through hole for the anti-slip pin 1402 to pass through. The spring 1403 pushes one end of the anti-slip pin 1402 out of the mounting cylinder 1401 and through the retaining ring 13 to abut against the outer wall of the steel mold 1, preventing the steel mold 1 from slipping inside the retaining ring 13 and ensuring that the steel mold 1 rotates synchronously with the retaining ring 13. The anti-slip pin 1402 has an arc-shaped portion at one end extending from the mounting cylinder 1401, and the arc-shaped portion is located on the side of the anti-slip pin 1402 facing the molding area; a limiting platform is provided at the 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, such as... Figure 5 As shown, when the steel mold 1 is installed, the retaining ring 13 slides from right to left. The arc-shaped part first contacts the end of the steel mold 1. The retaining ring 13 continues to move, and the steel mold 1 pushes the anti-slip pin 1402 into the mounting cylinder 1401 until the retaining 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.

[0033] In this embodiment, a plurality of grooves 103 are provided on the outer side wall of the steel mold 1, which are distributed along its circumference. The grooves 103 correspond one-to-one with the anti-slip units. The 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 retaining ring 13 rotate synchronously.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A roller pressing machine for concrete and reinforced concrete drainage pipes, comprising a steel mold (1) and two symmetrically arranged frames (2), characterized in that: Each frame (2) is rotatably equipped with a coaxial forming turntable (7). The forming turntable (7) is driven by a drive source (8) on the frame (2). The steel mold (1) and the forming turntable (7) can be detachably connected. A moving vehicle (10) is provided on one side of the frame (2) for pushing the pressure roller (6) into or out of the steel mold (1). After the pressure roller (6) is inserted into the steel mold (1), the axis of the pressure roller (6) is parallel to the axis of the steel mold (1) and there is a forming gap between the outer wall of the pressure roller (6) and the inner wall of the steel mold (1). A feeder (12) is provided on the other side of the frame (2) for feeding concrete (3) into the steel mold (1).

2. The roller pressing machine for concrete and reinforced concrete drainage pipes as described in claim 1, characterized in that: The driving source (8) is a drive motor, and the motor shaft of the drive motor is connected to a drive gear (801). The forming turntable (7) is coaxially provided with a driven gear (701) that meshes with the drive gear (801).

3. The roller pressing machine for concrete and reinforced concrete drainage pipes as described in claim 1, characterized in that: The steel mold (1) has multiple insertion holes (102) at both ends, and pins (4) are slidably arranged on the forming turntable (7). Each pin (4) is pushed into or out of the insertion hole (102) by the corresponding first oil cylinder (403).

4. The roller pressing machine for concrete and reinforced concrete drainage pipes as described in claim 3, characterized in that: The first hydraulic cylinder (403) is fixed on the frame (2), and the first hydraulic cylinder (403) is movably connected to the telescopic head (402). The end of the telescopic head (402) is fixedly connected to the connecting plate (401), and one end of the pin (4) is fixed on the connecting plate (401).

5. A roller pressing machine for concrete and reinforced concrete drainage pipes as described in claim 3, characterized in that: Multiple fixed pin seats (101) corresponding one-to-one with pins (4) are fixedly connected to the outer wall of the steel mold (1), and the insertion hole (102) is opened on the fixed pin seat (101).

6. The roller pressing machine for concrete and reinforced concrete drainage pipes as described in claim 1, characterized in that: A support is provided between the mobile vehicle (10) and the frame (2), and a support roller (11) for supporting the pressure roller (6) is rotatably provided at the top of the support.

7. The roller pressing machine for concrete and reinforced concrete drainage pipes as described in claim 1, characterized in that: Two guide rails (1001) extending along the axial direction of the pressure roller (6) are provided on one side of the frame (2), and the moving vehicle (10) reciprocates along the guide rails (1001).

8. The roller pressing machine for concrete and reinforced concrete drainage pipes as described in claim 1, characterized in that: The feeder (12) is equipped with a feeding nozzle (1201) that can extend into or out of the steel mold (1).

9. A roller pressing machine for concrete and reinforced concrete drainage pipes as described in claim 1, characterized in that: The forming turntable (7) is coaxially provided with a retaining ring (13) for fixing the steel mold (1) on one side facing the forming area. The forming turntable (7) is provided with a plurality of telescopic heads (402) evenly distributed along its circumference. The ends of the telescopic heads (402) are all fixedly connected to the retaining ring (13).

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