Demolding device of power transmission pole molding core mold

Abstract

The utility model discloses a demolding device of a power transmission pole forming core mold, the core mold is sleeved with an outer mold, a pouring cavity for pouring a power transmission pole is formed between the core mold and the outer mold, the demolding device comprises a connector detachably connected to the end of the core mold, and the tail end of the connector is connected with a driving cylinder body; the frame body is used for assembling the driving cylinder body and driving the driving cylinder body to be relatively adjusted. According to the demolding device, smooth separation of the core mold and the power transmission pole is achieved through mechanical external force, connection of the core mold and adaptive adjustment of the direction of applied external force are achieved through the frame body in the separation process, and the problem that the power transmission pole is damaged by the external force due to axial deflection of the core mold and the power transmission pole is solved. And the core mold is separated from the power transmission pole in the core mold separation process, so that the problem that the inner wall of the power transmission pole is abraded and damaged by the core mold in the whole separation process can be avoided.

Description

Technical Field

[0001] This application relates to the field of power transmission pole manufacturing technology, and in particular to a demolding device for a power transmission pole forming core mold. Background Technology

[0002] Transmission poles are an indispensable component of power transmission and distribution systems, primarily used to support and secure high-voltage transmission lines. As the supporting structure for transmission lines, transmission poles mainly bear the loads of 10 kV and above power lines, ensuring that the power lines can be stably suspended and maintain a safe distance from the ground and other objects, thereby guaranteeing the normal transmission of electrical energy.

[0003] The main materials used for power transmission poles include steel and reinforced concrete. Reinforced concrete poles are widely used due to their high strength, durability, simple construction, and aesthetically pleasing appearance. Steel poles, on the other hand, are suitable for harsh environments due to their high strength, long service life, and good corrosion resistance. Reinforced concrete poles include ordinary reinforced concrete poles and prestressed concrete poles.

[0004] Currently, to reduce the weight of transmission poles and save on concrete materials, the poles are manufactured as hollow (cylindrical) structures with reinforcing steel bars embedded in their side walls to maintain strength. The current method for manufacturing hollow transmission poles is as described in the attached instruction manual. Figure 1-2 The mold shown includes a detachable outer mold and a core mold, with the core mold and outer mold forming a cavity for casting the transmission pole. After casting, the end caps need to be removed, followed by the removal of the outer mold. Figure 4-5 The state shown is as follows. Because the mandrel is a one-piece structure, and the inner wall of the cured transmission pole is tightly attached to the outer wall of the mandrel, the transmission pole is difficult to disassemble from the mandrel. Typically, methods such as striking the axial end of the mandrel with external force are used to separate the two. However, under the action of external force, it is very easy to cause localized cracking of the transmission pole body, resulting in an incomplete transmission pole and affecting subsequent use. Summary of the Invention

[0005] To address the aforementioned problems, this application aims to provide a demolding device for a transmission pole forming core mold, which achieves smooth separation of the core mold from the transmission pole through mechanical external force, solving the problem of transmission pole breakage caused by current methods such as hammering, and resolving the problem of contact damage between the core mold and the transmission pole during the separation process.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: a demolding device for a core mold for forming a power transmission pole, wherein an outer mold is provided around the core mold, and a casting cavity for casting the power transmission pole is formed between the core mold and the outer mold, characterized in that: the demolding device includes a connector detachably connected to the end of the core mold, a drive cylinder is connected to the tail end of the connector, and a frame is also provided for assembling the drive cylinder and driving the drive cylinder to adjust relative to each other.

[0007] Preferably, a suspension chain is provided on the frame, the drive cylinder is suspended and connected to the suspension chain, and the drive cylinder is axially limited within the frame.

[0008] Preferably, a support block driven by the outer mold is provided on one side of the frame, and a support roller that elastically supports the core mold is provided on the support block.

[0009] Preferably, a lower pressure roller is provided on the upper side of the outer mold port, opposite to the support roller.

[0010] The beneficial effects of this application are: the demolding device achieves smooth separation of the core mold from the transmission pole through mechanical external force, and during the separation process, the frame allows for adaptive adjustment of the core mold connection and the direction of the applied external force, avoiding axial misalignment between the core mold and the transmission pole, thus preventing damage to the transmission pole due to external force. Furthermore, the device achieves disengagement from the transmission pole during the core mold's removal process, thereby preventing wear and damage to the inner wall of the transmission pole from the core mold throughout the entire separation process. Attached Figure Description

[0011] Figure 1 This is a diagram of the core mold structure.

[0012] Figure 2 This is a structural diagram of the outer mold in its disassembled state.

[0013] Figure 3 This diagram illustrates the assembly of the core mold into the outer mold.

[0014] Figure 4 Assembly drawing of the outer mold and core mold ends (left side of the drawing). Figure 3 Enlarged view of the structure at point A in the middle; the right side shows the casting of the transmission pole between the outer mold and the core mold.

[0015] Figure 5 for Figure 4 Illustration of disassembling the inner and outer molds after casting the power transmission pole.

[0016] Figure 6 This is a side view of the overall structure of the demolding device of this application.

[0017] Figure 7 This illustration shows the connection between the core mold end and the connector in this application.

[0018] Figure 8 For this application Figure 7 Enlarged view of the structure at point B in the middle.

[0019] Figure 9 For the purpose of this application Figure 8 The diagram illustrates the process of pulling out the core mold using the connector.

[0020] Figure 10 For the purpose of this application Figure 9 The diagram illustrates how the guide rails drive the outer mold to separate from the transmission pole and the core mold.

[0021] Figure 11 For the purpose of this application Figure 10 The diagram shows the core mold being supported by its own weight on the inner bottom surface of the transmission pole during the detachment process.

[0022] Figure 12 A diagram illustrating the support roller structure for this application is provided.

[0023] Figure 13 For this application Figure 12 Enlarged view of the structure at point C.

[0024] Figure 14 A diagram illustrating the structure of the lower pressure roller is provided for this application. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions of this application will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] See attached document Figures 1-14 The diagram illustrates a demolding device for a core mold used in the molding of a power transmission pole. The core mold 11 is fitted with an outer mold 12, forming a casting cavity 1a for casting the power transmission pole 2 between the core mold 11 and the outer mold 12. Currently, during the casting process of the power transmission pole, the outer mold (half structure) is first assembled by bolts, then the core mold is inserted into the outer mold 12, and finally, the two are connected by an end cap 13 to ensure coaxiality. Finally, concrete is poured into the casting cavity from the other end. After the concrete has cured, the pole can be cast as shown in the diagram. Figure 5 The outer mold 12 and the core mold 11 are shown to be disassembled from the power transmission pole.

[0027] To address the current problem of difficulty in separating the transmission pole from the core mold 11, this application includes a demolding device, such as... Figure 6-10 As shown, it includes a connector 3 detachably connected to the end of the core mold 11, and a threaded connection hole (not shown) is provided at the end of the core mold 11 for threaded engagement with the connector 3. A drive cylinder 4 is connected to the tail end of the connector 3. The connector 3 is preferably rotatably connected to the piston rod of the drive cylinder 4. During operation, the connector 3 is rotated to connect with the end of the core mold 11. After connection, the core mold 11 can be disengaged from the transmission pole and the outer mold 12 by mechanical external force driven by the drive cylinder 4. Then, the outer mold 12 can be disassembled to achieve the overall detachment of the transmission pole.

[0028] When the core mold 11 is detached, in order to facilitate the limiting of the outer mold 12 and the transmission pole, such as... Figure 7As shown, a frame 5 is provided to assemble and drive the drive cylinder 4 for relative adjustment. The drive cylinder 4 is assembled in the frame 5, and the connector of its piston rod can extend to the outside of the frame 5. After the connector 3 is connected to the end of the core mold 11, it drives the end of the outer mold 12 to abut against the outer wall of the frame 5 (and as... Figure 7 As shown, the end cap abuts against the end of the transmission pole while achieving coaxial positioning of the inner and outer molds (that is, the end cap abuts against the side wall of the frame 5, thus achieving synchronous positioning of the outer mold and the transmission pole). The end cap is a ring structure, and the core mold can be smoothly removed from the middle of the end cap by the drive of the connector 3.

[0029] Because the transmission pole body is relatively long, and the connector 3 is fixedly connected to the core mold 11, the axial error between them will cause the core mold 11 and the transmission pole to be misaligned during the process of the core mold 11 being removed. This will cause the inner wall and body of the transmission pole to be squeezed and broken. Therefore, this application adjusts the drive cylinder 4 on the frame 5 to adaptively adjust the coaxial accuracy of the connector 3 and the core mold 11, so as to avoid the external force damage to the transmission pole caused by the misalignment of the two.

[0030] Specifically, such as Figure 6-7 As shown, a suspension chain 6 is provided on the frame 5, and the drive cylinder 4 is suspended and connected to the suspension chain 6, and the drive cylinder 4 is axially confined within the frame 5. The suspension chain 6 allows the drive cylinder 4 to freely swing within the frame 5, thereby ensuring that the connector 3 and the core mold 11 are coaxial. Simultaneously, during the removal of the core mold 11, the suspension chain 6 continuously and adaptively adjusts the position of the connector 3, effectively preventing external force damage to the inner wall of the transmission pole during the removal of the core mold 11. The axial confinement of the drive cylinder 4 within the frame 5 ensures stability when axial force is applied to the drive cylinder 4.

[0031] Because transmission poles are typically tapered (with a smaller outer diameter at the top and a larger outer diameter at the bottom when vertical), during the extraction process, if there is a certain misalignment between the mandrel 11 and the transmission pole, the mandrel 11 will fall onto the inner bottom surface of the transmission pole due to its gravity. Meanwhile, the outer mandrel 12 and the transmission pole will continue to move away from the frame 5 via the guide rail 10 at the bottom of the outer mandrel 12. This causes the mandrel 11 to remain supported on the bottom of the inner wall of the transmission pole, resulting in wear on the bottom surface of the inner wall. Figure 11 As shown, therefore, to solve this problem, as Figure 12-13As shown, a support block 7 driven by the outer mold 12 is provided on one side of the frame 5, and a support roller 8 elastically supports the core mold 11 on the support block 7. When the core mold 11 and the transmission pole are axially misaligned due to the external force pulled by the drive cylinder 4 and the connector 3, that is, the tight state between the core mold 11 and the transmission pole changes to a loose state, and then the outer mold 11 is driven away by the guide rail, so that the core mold 11 can be disengaged. During the movement of the guide rail, if... Figure 13 As shown, the outer mold 12 is driven to move on the guide rail by contacting the end ear plate with the support block 7. During the movement, the support roller 8 on the support block 7 contacts the bottom of the core mold 11 and supports the core mold 11, so as to achieve contact between the bottom of the core mold and the inner bottom surface of the transmission pole, thereby solving the wear problem that exists when the core mold 11 body is supported on the inner wall of the transmission pole.

[0032] Since the core mold 11 and the transmission pole are both tapered, the outer diameter of the part where the support roller 8 gradually contacts the core mold 11 decreases. In order to ensure that the support roller 8 can still effectively support the core mold 11, the elastic support for the support roller 8 is preferably provided on the support block 7 with an elastic sleeve (not shown in the figure) to support the support roller 8. During the process of the core mold 11 being removed, it can always be ensured that the support roller 8 is in contact with the core mold 11 for support.

[0033] To further prevent wear between the core mold 11 and the upper side of the transmission pole due to the action of the elastic sleeve, such as Figure 14 As shown, a lower pressure roller 9 is disposed on the upper side of the outer mold 12 port, opposite to the support roller 8. This lower pressure roller 9 is as follows... Figure 14 As shown, the core mold 11 can be quickly assembled onto the ear plate on the upper side of the outer mold 12 using a pin (not shown in the figure). The lower pressure roller 9 contacts the upper side of the core mold 11, thereby preventing the core mold 11 from contacting the upper side of the transmission pole under the action of the support roller 8 and causing wear. Through the support roller 8 and the lower pressure roller 9, the core mold 11 is always in the middle position inside the transmission pole during the ejection process, thereby effectively avoiding wear on the transmission pole.

[0034] The principle of this application is as follows: During the core mold removal operation, the inner and outer molds and the cast transmission pole are hoisted and placed on the guide rail as a whole. Then, the rotating connector 3 is connected to the end of the core mold 11. Then, the piston rod of the drive cylinder 4 drives the connector 3 to retract, and the end cover and the outer mold 12 abut against the frame 5 as a whole. Continue to drive, so that the core mold 11 and the transmission pole have a certain length of axial misalignment, that is, the core mold and the transmission pole change from a tight state to a loose state. Then, the lower pressure roller 9 is assembled on the upper side of the outer mold. The outer mold moves on the guide rail, and at the same time drives the support roller 8 to move. The support roller 8 always supports the core mold 11 upward through elasticity, and at the same time, the lower pressure roller 9 prevents the core mold from contacting the upper side of the transmission pole. In this state, the core mold can be smoothly removed from the inside of the transmission pole. Then, the outer mold is disassembled in half, and the transmission pole can be completely removed.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this application. Various changes and modifications may be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims.

Claims

1. A demolding device for a core mold for forming a power transmission pole, wherein an outer mold (12) is fitted over the core mold (11), and a casting cavity (1a) for casting a power transmission pole (2) is formed between the core mold (11) and the outer mold (12), characterized in that: The demolding device includes a connector (3) detachably connected to the end of the core mold (11), a drive cylinder (4) connected to the tail end of the connector (3), and a frame (5) for assembling the drive cylinder (4) and driving the drive cylinder (4) to adjust relative to each other.

2. The demolding device according to claim 1, characterized in that: A suspension chain (6) is provided on the frame (5), the drive cylinder (4) is suspended and connected to the suspension chain (6), and the drive cylinder (4) is axially limited within the frame (5).

3. The demolding device according to claim 2, characterized in that: A support block (7) driven by the outer mold (12) is provided on one side of the frame (5), and a support roller (8) that elastically supports the core mold (11) is provided on the support block (7).

4. The demolding device according to claim 3, characterized in that: A pressure roller (9) is provided on the upper side of the outer mold (12) opposite to the support roller (8).

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