Concrete pole vibration centrifugal forming device

Abstract

The utility model relates to the technical field of electric pole production, and disclose a concrete electric pole vibration centrifugal forming device, include: base, base rotationally installed for pouring mould, the outside fixed mounting of mould has the rib; Knocking assembly sets up on the base for the intermittent impact to the mould, and knocking assembly includes slide, spring plate, hammer head and electromagnet, and spring plate sets up on the base and can along the radial displacement of mould, spring plate and electromagnet all with slide fixed mounting, hammer head and spring plate fixed mounting, and electromagnet can attract spring plate deformation energy storage, produce vibration through the mode of directly impacting the mould, and vibration energy directly acts on the mould, and energy transmission path is short, and the efficiency is high, avoids the futile loss of energy on the rack, and the base itself no longer bears the intense alternating stress, only as the installation base of slide and actuating mechanism, and the operation is stable, and the life is long, and the requirement to foundation is low.

Description

Technical Field

[0001] This utility model relates to the field of power pole manufacturing technology, and in particular to a vibration centrifugal molding device for concrete power poles. Background Technology

[0002] During the production of concrete poles, concrete needs to be poured into a high-speed rotating mold, and centrifugal force is used to distribute the concrete on the inner wall of the mold and initially compact it.

[0003] A search revealed a prior art device for rapid concrete forming of cement poles (publication number: CN117863347A), comprising a U-shaped base, a three-jaw chuck, a centrifugal device, a vibration device, and a mold forming device. Centrifugal devices are symmetrically arranged on the left and right sides of the two vertical ends of the U-shaped base, and a three-jaw chuck is arranged on the left and right sides of the two centrifugal devices. A mold forming device is arranged between the three-jaw chucks, and a vibration device is symmetrically arranged below the mold forming device, located on the upper surface of the horizontal section of the U-shaped base.

[0004] Existing technology places the vibration device on the base below the mold, and uses a vibrator to cause the entire base and mold to vibrate. This "base vibration" mode has obvious drawbacks: vibration energy needs to be transmitted to the mold through a large number of intermediate components such as the machine base and support rollers, resulting in huge energy loss and low efficiency; strong vibration will directly act on the foundation and frame of the entire equipment, leading to shortened equipment life, loosening of fixing bolts, and higher requirements for the factory foundation; at the same time, the entire equipment becomes a huge noise source, and the working environment is harsh.

[0005] Therefore, we propose a vibration centrifugal molding device for concrete poles. Utility Model Content

[0006] This utility model mainly solves the above-mentioned technical problems of high energy loss, serious equipment damage, high noise and poor compaction uniformity, and provides a vibration centrifugal molding device for concrete poles.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a vibration centrifugal molding device for concrete poles, comprising: A base on which a mold for casting is rotatably mounted, and ribs are fixedly mounted on the outside of the mold; A striking assembly, mounted on a base, is used to intermittently impact a mold. The striking assembly includes a slide, a spring plate, a hammer head, and an electromagnet. The spring plate is movably mounted on the base and can be displaced radially along the mold. Both the spring plate and the electromagnet are fixedly mounted to the slide. The hammer head is fixedly mounted to the spring plate. The electromagnet can attract the deformation of the spring plate to store energy.

[0008] In a preferred embodiment of this utility model, the rib is a spiral rod, which is welded and fixed to the outer wall of the mold. The cross-section of the rib is triangular, and the outer wall of the mold has multiple ribs arranged in a ring array.

[0009] In a preferred embodiment of this utility model, the slide is an integrally formed L-shaped block, and the spring plate is locked and fixed to the slide by bolts.

[0010] In a preferred embodiment of this utility model, the spring plate is an L-shaped plate made of spring material. The spring plate and the slide are provided with mounting holes. Bolts pass through the mounting holes and are locked to the spring plate with nuts. The spring plate extends inclinedly toward the side away from the slide.

[0011] In a preferred embodiment of this invention, the electromagnet is formed into a column with a semi-circular cross-section, and the electromagnet is fixedly installed on one side of the spring plate by bolts.

[0012] In a preferred embodiment of this utility model, the striking assembly further includes a lead screw and a guide rod. A motor-driven lead screw is fixedly provided on one side of the base. The lead screw is threadedly connected to the slide block. The guide rod is fixedly installed on the base and guides the slide block.

[0013] In a preferred embodiment of this utility model, the guide rod is fixedly installed above the base, the lead screw is rotatably connected to the base via a bearing, and the output shaft of the motor is connected to the lead screw via a coupling.

[0014] This utility model provides a vibratory centrifugal molding device for concrete poles. It has the following beneficial effects: 1. This concrete pole vibration centrifugal molding device achieves segmented compaction of multiple parts of the mold through the radial displacement of the slide block along the mold. An electromagnet connected to a controller allows for intermittent power switching. The electromagnet attracts a spring plate, causing it to deform and store force towards the slide block. When the electromagnet is de-energized, the spring plate returns to its original position, causing the hammer head to strike the ribs on the outside of the mold, thus generating a certain vibration frequency in the mold and ensuring concrete compaction. The polyurethane hammer head protects the mold and ribs, while avoiding noise and resonance caused by hard impacts. Compared to existing technologies using an eccentric joint... This design generates vibration by directly impacting the mold. The vibration energy acts directly on the mold, resulting in a short energy transfer path and high efficiency. It avoids unnecessary energy loss on the frame. The base itself no longer bears strong alternating stress and only serves as the mounting base for the slides and actuators. It operates smoothly, has a long service life, and has low foundation requirements. By controlling the number, position, and impact force of the slides, "directional" vibration compaction of different parts of the mold can be achieved, resulting in better performance. The impact sound replaces the roar of the entire machine, making the noise more concentrated and easier to insulate.

[0015] 2. This concrete pole vibration centrifugal molding device uses a motor to drive a lead screw, which pushes a slide block to slide radially along a guide rod. The slide block has holes that fit with the guide rod to achieve sliding, thus enabling precise control of the slide block position. The hammer head can continuously adjust the impact position on the mold to achieve uniform compaction, thus achieving precise control of the compaction position. Attached Figure Description

[0016] Figure 1 This is one of the overall perspective views of this utility model; Figure 2 This is the second overall perspective view of the present utility model; Figure 3 This is a perspective view of the striking component of this utility model; Figure 4 One of the perspective views of the slide mounting spring plate and electromagnet of this utility model; Figure 5 The second perspective view of the slide mounting spring plate and electromagnet of this utility model.

[0017] Legend: 10. Base; 11. Mold; 12. Rib; 20. Slide; 21. Spring plate; 22. Hammer head; 23. Electromagnet; 24. Lead screw; 25. Guide rod. Detailed Implementation

[0018] A vibratory centrifugal molding device for concrete poles, such as Figure 1 and Figure 2 As shown, it includes: A base 10 is rotatably mounted with a mold 11 for casting. Ribs 12 are fixedly mounted on the outside of the mold 11. The ribs 12 are helical rods and are welded to the outer wall of the mold 11. The cross-section of the ribs 12 is triangular. The outer wall of the mold 11 has multiple ribs 12 arranged in a ring array. The mold 11 includes two symmetrically arranged shells, which are locked together by bolts and nuts. The mold 11 has a casting port. Flanges are provided at both ends of the mold 11. A geared motor is mounted on the base 10. The output shaft of the geared motor is mounted with a flange. The flange at the end of the mold 11 can be locked and fixed to the flange of the motor output shaft by bolts. The other end of the mold 11 is rotatably connected to the base 10 through the same flange structure to achieve centrifugal molding.

[0019] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the striking assembly is set on the base 10 for intermittently impacting the mold 11. The striking assembly includes a slide 20, a spring plate 21, a hammer head 22, and an electromagnet 23. The spring plate 21 is movably set on the base 10 and can be moved radially along the mold 11. The spring plate 21 and the electromagnet 23 are both fixedly installed on the slide 20. The hammer head 22 is fixedly installed on the spring plate 21. The electromagnet 23 can attract the spring plate 21 to deform and store energy. The slide 20 is an integrally formed L-shaped block. The spring plate 21 is locked and fixed to the slide 20 by bolts. The spring plate 21 is an L-shaped plate made of spring material. The spring plate 21 and the slide 20 are provided with mounting holes. The bolts pass through the mounting holes and are locked to the spring plate 21 by nuts. The spring plate 21 extends inclinedly towards the side away from the slide 20. The electromagnet 23 forms a column with a semi-circular cross section. The electromagnet 23 is fixedly installed on one side of the spring plate 21 by bolts. In this solution, the sliding block 20 is used to radially displace the mold 11 to achieve segmented compaction of multiple sections of the mold 11. An electromagnet 23 is connected to a controller for intermittent power switching. The electromagnet 23 attracts the spring plate 21, causing it to deform and store force towards the sliding block 20. When the electromagnet 23 is de-energized, the spring plate 21 resets, causing the hammer head 22 to strike the ribs 12 on the outside of the mold 11. This generates a certain vibration frequency in the mold 11, ensuring the concrete compaction. The polyurethane hammer head 22 protects the mold 11 and the ribs 12, while avoiding noise and resonance caused by hard impacts. Compared to existing technologies… The technology adopts an eccentric structure. This solution generates vibration by directly impacting the mold 11. The vibration energy acts directly on the mold 11, resulting in a short energy transmission path and high efficiency. It avoids unnecessary energy loss on the frame. The base 10 itself no longer bears strong alternating stress and only serves as the mounting base for the slide 20 and the actuator. It operates smoothly, has a long service life, and has low foundation requirements. By controlling the number, position, and impact force of the slide 20, "directional" vibration compaction of different parts of the mold can be achieved, resulting in better performance. The impact sound replaces the roar of the entire machine, making the noise more concentrated and easier to insulate.

[0020] like Figure 2 and Figure 3 As shown, the striking assembly also includes a lead screw 24 and a guide rod 25. A motor-driven lead screw 24 is fixedly installed on one side of the base 10. The lead screw 24 is threadedly connected to the slide 20. The guide rod 25 is fixedly installed on the base 10 and guides the slide 20. The guide rod 25 is fixedly installed above the base 10. The lead screw 24 is rotatably connected to the base 10 through a bearing. The output shaft of the motor is connected to the lead screw 24 through a coupling. It should be noted that both the guide rod 25 and the lead screw 24 are covered with retractable dust covers. Long-lasting grease can be applied to the guide rod 25 and the lead screw 24 to reduce wear and jamming. In this scheme, the motor is a servo motor. The motor needs to form a closed-loop control with the controller through the encoder. The motor drives the lead screw 24, which pushes the slide 20 to slide radially along the guide rod 25. The slide 20 has a hole that fits the guide rod 25 to achieve sliding. This can achieve precise control of the position of the slide 20. The hammer 22 can continuously adjust the impact position on the mold 11 to achieve uniform vibration.

[0021] Through a preset program, the controller can command the slide 20 to move back and forth in a certain section of the pole or to scan the entire mold length at a constant speed to ensure no vibration blind spots.

[0022] In a preferred embodiment, the central controller is a PLC. The operator can set parameters on the human-machine interface (HMI), such as the striking frequency (achieved by adjusting the on / off frequency of the electromagnet 23, for example, 10-50Hz) and the slide movement speed (for example, 10-50mm / s). The PLC receives encoder feedback from the servo motor to achieve closed-loop control of the slide position.

[0023] The working principle of this utility model is as follows: concrete is poured into the mold 11 after the mold is closed, the mold drive motor is started, and the mold 11 starts to rotate at high speed, generating centrifugal force.

[0024] Start vibration: The central controller starts and controls the servo motor according to the preset program to move the slide 20 to one end of the mold 11.

[0025] Directional striking: The controller intermittently switches the electromagnet 23 on and off at a set frequency. When energized, the spring plate 21 is attracted and bent to store energy; when de-energized, the spring plate 21 returns to its original position and drives the polyurethane hammer head 22 to strike the spiral rib 12 at high frequency. The resulting vibration wave is directly transmitted into the concrete in the mold, effectively removing air bubbles and making it dense.

[0026] Axial scanning: While striking, the servo motor drives the lead screw 24, causing the entire striking assembly to move at a constant speed along the axis of the mold 11, so as to achieve comprehensive and uniform vibration of the entire pole.

[0027] Process End: After the vibration compaction process is completed, the tapping component stops working and resets, and the mold 11 continues to rotate until the concrete reaches the predetermined strength.

[0028] Through the above method, this utility model successfully converts low-energy electrical energy (electromagnet attraction) into high-frequency, high-energy mechanical impact (hammer strike), and transmits it to concrete in a precise, controllable, and efficient manner, perfectly solving the various problems raised in the background art.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A concrete pole vibration centrifugal forming apparatus, characterized by, include: A base (10) is rotatably mounted with a mold (11) for casting, and ribs (12) are fixedly mounted on the outside of the mold (11). The striking assembly is set on the base (10) for intermittently impacting the mold (11). The striking assembly includes a slide (20), a spring plate (21), a hammer (22), and an electromagnet (23). The spring plate (21) is movably set on the base (10) and can be moved radially along the mold (11). The spring plate (21) and the electromagnet (23) are both fixedly installed on the slide (20). The hammer (22) is fixedly installed on the spring plate (21). The electromagnet (23) can attract the spring plate (21) to deform and store energy.

2. The concrete pole vibro-centrifugal forming apparatus according to claim 1, characterized in that: The rib (12) is a spiral rod. The rib (12) is welded and fixed to the outer wall of the mold (11). The cross section of the rib (12) is triangular. The outer wall of the mold (11) has multiple ribs (12) arranged in a ring array.

3. The concrete pole vibro-centrifugal forming apparatus according to claim 1, characterized in that: The slide block (20) is an integrally formed L-shaped block, and the spring plate (21) is locked and fixed to the slide block (20) by bolts.

4. The concrete pole vibro-centrifugal forming apparatus according to claim 1, characterized in that: The spring plate (21) is an L-shaped plate made of spring material. The spring plate (21) and the slide (20) are provided with mounting holes. The bolt passes through the mounting holes and is locked to the spring plate (21) with a nut. The spring plate (21) extends inclined towards the side away from the slide (20).

5. The concrete pole vibro-centrifugal forming apparatus according to claim 1, characterized in that: The electromagnet (23) is formed into a column with a semi-circular cross section, and the electromagnet (23) is fixedly installed on one side of the spring plate (21) by bolts.

6. The concrete pole vibro-centrifugal forming apparatus according to claim 1, characterized in that: The striking assembly also includes a lead screw (24) and a guide rod (25). A motor-driven lead screw (24) is fixedly provided on one side of the base (10). The lead screw (24) is threadedly connected to the slide (20). The guide rod (25) is fixedly installed on the base (10) and guides the slide (20).

7. The concrete pole vibro-centrifugal forming apparatus according to claim 6, characterized in that: The guide rod (25) is fixedly installed above the base (10), the lead screw (24) is rotatably connected to the base (10) through a bearing, and the output shaft of the motor is connected to the lead screw (24) through a coupling.

Images