Electric pole steel mould with annular linkage prestressing mechanism

Abstract

The present application relates to the technical fields of electric pole steel mould, in particular to an electric pole steel mould with annular linkage prestress mechanism, which comprises a steel mould body, prestressed reinforcement is inserted into the steel mould body, a reinforcement support positioning assembly is symmetrically installed at both ends of the steel mould body to support the prestressed reinforcement, a reinforcement end clamping and fixing assembly is installed on the reinforcement support positioning assembly to clamp and fix the end of the prestressed reinforcement, prestress bearing rings are arranged at both ends of the steel mould body, the prestress bearing rings can not only support and position the prestressed reinforcement, but also can realize the synchronous tensioning of the prestressed reinforcement, which can avoid the uneven stress distribution caused by the tensioning time difference, thereby ensuring the overall stability of the electric pole structure, and also helps to reduce the deformation or cracks of the electric pole structure.

Description

Technical Field

[0001] This invention relates to the field of electric pole steel mold technology, specifically to an electric pole steel mold with a ring-linked prestressing mechanism. Background Technology

[0002] Prestressed pole steel molds can improve the load-bearing capacity and durability of poles by setting prestressed steel bars in the molds. Existing pole steel molds can effectively avoid eccentric force by tensioning the prestressed steel bars symmetrically. However, the prestressed steel bars are tensioned one by one during the tensioning process, which makes the operation more complicated. Moreover, the inability to tension the prestressed steel bars simultaneously may result in different tensile forces on each prestressed steel bar, thus affecting the quality of pole production. Summary of the Invention

[0003] The purpose of this invention is to provide a pole steel mold with a ring-linked prestressing mechanism to solve the problem mentioned in the background art that existing pole steel molds cannot achieve synchronous tensioning of prestressed steel bars.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A steel formwork for a utility pole with a ring-linked prestressed mechanism includes: a steel formwork body, wherein prestressed steel bars are inserted inside the steel formwork body;

[0006] A rebar support and positioning assembly is symmetrically installed at both ends of the steel formwork body to support the prestressed rebar.

[0007] A rebar end clamping and fixing assembly is installed on a rebar support and positioning assembly and is used to clamp and fix the ends of prestressed rebars.

[0008] The clamping drive assembly is also mounted on the rebar support and positioning assembly, and cooperates with the rebar end clamping and fixing assembly to drive the rebar end clamping and fixing assembly to move.

[0009] Furthermore, symmetrical support truncated cones are fixedly provided at both ends of the steel mold body, and support rods are fixedly provided on the support truncated cones to support the rebar support and positioning components.

[0010] Furthermore, the rebar support positioning assembly includes: a prestressed bearing ring, which is sleeved on the support rod;

[0011] The counterweight bearing plate is fixedly mounted on the prestressed bearing ring.

[0012] Furthermore, a support circular hole is provided on the prestressed bearing ring, which cooperates with the support circular rod to support the prestressed bearing ring.

[0013] Furthermore, a mounting bracket is fixedly installed on the counterweight plate to support the prestressed steel bars.

[0014] Furthermore, the steel bar end clamping and fixing assembly includes: a movable support block, which is movably mounted on the counterweight support plate;

[0015] A drive ring sleeve is also movably mounted on the counterweight bearing plate;

[0016] The second clamping ring plate is installed in the prestressed bearing ring.

[0017] Furthermore, a first clamping ring plate is fixedly provided on the movable support block to clamp the prestressed steel bars.

[0018] Furthermore, the drive ring sleeve is movably connected to the movable support block, and the drive ring sleeve is moved by the movable support block.

[0019] Furthermore, the second clamping ring plate is movably connected to the driving ring sleeve, and the driving ring sleeve drives the second clamping ring plate to move, thereby clamping the prestressed steel bars.

[0020] Furthermore, the steel bar end clamping and fixing assembly also includes a clamping mating strip, which is in the assembly and is moved by the driving ring sleeve to achieve clamping of the prestressed steel bar.

[0021] Furthermore, the clamping drive assembly is a drive mating sleeve, which is installed on the prestressed bearing ring and cooperates with the movable bearing block to drive the movable bearing block to move.

[0022] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a reasonable structural design and strong functionality, and has the following advantages:

[0023] 1. Prestressed bearing rings are set at both ends of the steel formwork body. The prestressed bearing rings can not only support and position the prestressed steel bars, but also realize the synchronous tensioning of the prestressed steel bars. This can avoid uneven stress distribution caused by tensioning time difference, thereby ensuring the overall stability of the pole structure and also helping to reduce the deformation or cracks that may occur in the pole structure.

[0024] 2. By setting prestressed bearing rings at both ends of the steel mold body, it is possible not only to achieve single-end tensioning of prestressed steel bars, but also to tension both ends simultaneously, meeting different tensioning requirements. It is highly adaptable and easy to operate.

[0025] 3. In addition, multiple layers of clamping and fixing can be used at both ends of the prestressed steel bars to fully ensure the clamping force of the prestressed steel bars, thereby ensuring the operational safety of the prestressed steel bars during the tensioning process. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the assembly of the steel mold body.

[0027] Figure 2 This is a schematic diagram of the steel mold body.

[0028] Figure 3 This is a schematic diagram of the assembly of a prestressed bearing ring.

[0029] Figure 4 This is a schematic diagram of the assembly of the prestressed bearing ring and the drive ring sleeve.

[0030] Figure 5 This is a schematic diagram of the assembly of the prestressed bearing ring and the second clamping ring plate.

[0031] Figure 6 This is a first-view structural schematic diagram of a prestressed bearing ring.

[0032] Figure 7 This is a schematic diagram of the prestressed bearing ring from a second perspective.

[0033] Figure 8 This is a structural schematic diagram of the counterweight bearing plate.

[0034] Figure 9 This is a schematic diagram of a half-section of the counterweight bearing plate.

[0035] Figure 10 This is a schematic diagram showing the fit between the prestressed steel reinforcement and the equipment.

[0036] Figure 11 Assembly diagram for the matching set.

[0037] Figure 12 This is a schematic diagram showing the connection between the drive ring sleeve and the second clamping ring plate.

[0038] Figure 13 This is a schematic diagram of the assembly of the movable support block and the drive mating sleeve.

[0039] In the diagram: 1. Steel mold body; 11. Supporting frustum; 12. Supporting rod; 2. Prestressed bearing ring; 21. Supporting hole; 22. First thread; 23. Protruding bearing ring; 24. Connecting support frame; 25. Limiting ring; 26. Inner bearing plate; 27. Movable bearing hole; 3. Counterweight bearing plate; 31. Support moving groove; 32. Support mating block; 33. Insertion bearing hole; 34. Assembly set; 35. Inner bearing strip; 36. Supporting ring sleeve; 37. Protruding bearing block; 38. Connecting hole; 4. Movable bearing block; 41. Movable mating rod; 42. Movable mating frame; 43. Insertion 44. Support rod; 45. First connecting spring; 5. First clamping ring plate; 6. Drive ring sleeve; 7. Conical inner support platform; 8. Matching support bar; 9. Movable support plate; 10. Movable support column; 11. Protruding connecting plate; 12. Connecting movable rod; 13. Second clamping ring plate; 14. Movable support rod; 15. Connecting support block; 16. Clamping mating bar; 17. Matching support rod; 18. Hemispherical support block; 19. Second connecting spring; 20. Drive mating sleeve; 21. Second thread; 22. Support ring platform; 33. Matching ring groove; 44. Inclined protrusion; 55. Prestressed steel bar. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] This invention provides a technical solution:

[0042] like Figure 1 As shown, a pole steel mold with a ring-linked prestressed mechanism includes: a steel mold body 1, a rebar support and positioning component, a rebar end clamping and fixing component, and a clamping drive component. Prestressed rebars 9 are inserted inside the steel mold body 1. Through the arrangement of the prestressed rebars 9, the prestressed rebars 9 work collaboratively with the concrete matrix of the pole, tightly constraining the expansion of micropores inside the concrete, reducing the probability of moisture and corrosive media (such as rainwater and soil salts) penetrating into the concrete and contacting the rebars, thus reducing the rate of rebar corrosion. Furthermore, the concrete matrix of the pole in the prestressed state has higher density, enhanced impermeability and carbonation resistance, effectively delaying the erosion and damage to the pole structure from the external environment, significantly extending the pole's service life, improving its durability in complex outdoor environments, reducing later maintenance costs and replacement frequency, meeting the durability design standards for long-term outdoor use of poles, and effectively improving the load-bearing capacity and durability of the pole.

[0043] The steel bar support and positioning components are symmetrically installed at both ends of the steel mold body 1 to support the prestressed steel bars 9, which facilitates the tensioning of the prestressed steel bars 9 in the later stage. The steel bar support and positioning components are installed at both ends of the steel mold body 1, which makes the tensioning more flexible. That is, in the actual tensioning process, the prestressed steel bars 9 can be tensioned at one end or at both ends simultaneously according to the tensioning requirements.

[0044] The rebar end clamping and fixing component is installed on the rebar support and positioning component to clamp and fix the ends of the prestressed rebar 9. By clamping and fixing both ends of the prestressed rebar 9 with the rebar end clamping and fixing component, the tensioning work can be carried out. The clamping drive component is also installed on the rebar support and positioning component, and works with the rebar end clamping and fixing component to drive the rebar end clamping and fixing component to move, thereby clamping and fixing the ends of the prestressed rebar 9. Moreover, the clamping drive component can drive multiple rebar end clamping and fixing components to move synchronously, thereby achieving synchronous clamping and fixing of multiple prestressed rebars 9. There is no need to operate the clamping of the prestressed rebar 9 one by one, which is very convenient, fast and simple to operate.

[0045] like Figure 1 and Figure 2 As shown, the two ends of the steel mold body 1 are symmetrically fixed with supporting truncated cones 11 by welding process. Supporting rods 12 are integrally formed and fixed on the supporting truncated cones 11. The supporting rods 12 support the rebar support and positioning components, so that the rebar support and positioning components can move along the supporting rods 12.

[0046] like Figure 1 , Figure 6 and Figure 7 As shown, the rebar support positioning assembly includes a prestressed bearing ring 2 and a counterweight bearing plate 3. The prestressed bearing ring 2 is sleeved on the support rod 12. Specifically, a support circular hole 21 is provided on the prestressed bearing ring 2. The support circular hole 21 cooperates with the support rod 12 to support the prestressed bearing ring 2. The machining accuracy of the support circular hole 21 must meet the preset technical requirements. Its inner wall is finely ground and polished to ensure that the surface is smooth and free of sharp burrs, protrusions or machining residue defects. This is to avoid damage to the surface coating of the support rod 12 due to rough inner wall or burr scratches during the relative installation of the prestressed bearing ring 2 and the support rod 12 or during subsequent stress loading, or to avoid problems such as assembly jamming of the prestressed bearing ring 2 or local stress concentration.

[0047] In addition, the inner diameter, hole tolerance, and axial straightness of the support hole 21 must match the outer diameter and cylindricity of the support rod 12, so that the support hole 21 and the support rod 12 form a clearance fit or transition fit structure. During assembly, the support rod 12 can be smoothly inserted into the support hole 21, and there is no obvious radial wobble after the two are assembled. The inner wall of the support hole 21 and the outer wall of the support rod 12 are tightly fitted, providing radial positioning and axial support for the prestressed bearing ring 2.

[0048] like Figure 6 , Figure 8 and Figure 9 As shown, the counterweight bearing plate 3 is fixedly mounted on the prestressed bearing ring 2 by welding. Symmetrical support and movement grooves 31 are provided on both sides of the counterweight bearing plate 3. The inner walls of the support and movement grooves 31 are smooth and burr-free. A support mating block 32 is integrally formed and fixedly mounted at the lower end of the counterweight bearing plate 3. An insertion socket 33 is provided on the support mating block 32. An assembly 34 is welded and fixedly mounted at the lower end of the support mating block 32, and the insertion socket 33 communicates with the assembly 34. An inner bearing strip 35 is integrally formed and fixedly mounted inside the assembly 34. A support ring sleeve 36 is integrally formed and fixedly mounted on the upper end of the inner bearing strip 35. Additionally, a protruding bearing block 37 is integrally formed and fixedly mounted on the assembly 34, and a connecting hole 38 is provided on the protruding bearing block 37, communicating with the assembly 34. Figure 10 As shown, the prestressed steel bar 9 is supported by the fitting 34, that is, when supporting the prestressed steel bar 9, the prestressed steel bar 9 is inserted into the support ring 36 in the fitting 34.

[0049] like Figure 3 , Figure 4 and Figure 5 As shown, the rebar end clamping and fixing assembly includes: a movable bearing block 4, a driving ring sleeve 5, and a second clamping ring plate 6. The movable bearing block 4 is movably mounted on the counterweight bearing plate 3. Specifically, an insert bearing rod 43 is welded and fixed to the movable bearing block 4 by welding. The insert bearing rod 43 is inserted into the insert bearing hole 33. The movable bearing block 4 is restricted by the cooperation between the insert bearing rod 43 and the insert bearing hole 33. The insert bearing rod 43 can move along the insert bearing hole 33. In addition, a first connecting spring 44 is sleeved on the insert bearing rod 43. The two ends of the first connecting spring 44 are welded and fixed to the movable bearing block 4 and the support mating block 32 respectively by welding. The setting of the first connecting spring 44 can not only stabilize the position of the movable bearing block 4, but also reset the movable bearing block 4.

[0050] like Figure 5 and Figure 11As shown, the drive ring sleeve 5 is also movably installed on the counterweight bearing plate 3, the second clamping ring plate 6 is installed in the prestressed bearing ring 2, and the two second clamping ring plates 6 form a group, and a prestressed steel bar 9 is clamped by the two second clamping ring plates 6 in the group.

[0051] like Figure 10 As shown, a first clamping ring plate 45 is welded and fixed on the plug-in support rod 43 on the movable support block 4 by welding process. The first clamping ring plate 45 is in the assembly 34. When the prestressed steel bar 9 is clamped by the first clamping ring plate 45, the first clamping ring plate 45 moves and contacts the prestressed steel bar 9. In this way, the cooperation between the first clamping ring plate 45 and the support ring sleeve 36 can tightly clamp the prestressed steel bar 9.

[0052] like Figure 10 and Figure 12 As shown, the drive ring sleeve 5 is movably connected to the movable support block 4, and the drive ring sleeve 5 moves via the movable support block 4. Specifically, a movable mating frame 42 is symmetrically welded to the movable support block 4 using a welding process. The inner wall of the movable mating frame 42 is smooth and burr-free. A mating support strip 52 is symmetrically welded to the drive ring sleeve 5 using a welding process. A movable support plate 53 is integrally formed and fixed on the mating support strip 52. The surface of the movable support plate 53 is smooth and burr-free, and part of the movable support plate 53 is inserted into the support movable groove 31. The movable support plate 53 contacts the inner wall of the support movable groove 31. Thus, the movable support plate 53 and the support movable groove 31... The mating support can support the drive ring sleeve 5, allowing it to be movably mounted on the counterweight plate 3. The movable support plate 53 can move in the support moving groove 31, thereby enabling the drive ring sleeve 5 to move. A movable support column 54 is welded and fixed to the mating support bar 52. The surface of the movable support column 54 is smooth and burr-free, and the movable support column 54 is inserted into the movable mating frame 42. The movable support column 54 is in contact with the inner wall of the movable mating frame 42. When the movable support block 4 moves, it will also drive the movable mating frame 42 to move. As the movable mating frame 42 moves, it will drive the movable support column 54 to move, thereby enabling the drive ring sleeve 5 to move.

[0053] like Figure 2 , Figure 5 and Figure 12As shown, the second clamping ring plate 6 is movably connected to the driving ring sleeve 5. The driving ring sleeve 5 drives the second clamping ring plate 6 to move and clamp the prestressed steel bar 9. Specifically, a protruding connecting plate 55 is symmetrically welded and fixed on the driving ring sleeve 5. A connecting movable rod 56 is hinged to the protruding connecting plate 55 and is movably connected to the second clamping ring plate 6. A movable support rod 61 is welded and fixed on the second clamping ring plate 6. A connecting bearing block 62 is welded and fixed to the end of the movable support rod 61 away from the second clamping ring plate 6. The connecting bearing block 62 is hinged to the connecting movable rod 56. An inner bearing plate 2 is welded and fixed inside the prestressed bearing ring 2. 6. A movable bearing hole 27 is provided on the inner bearing plate 26. A movable support rod 61 on the second clamping ring plate 6 is inserted into the movable bearing hole 27. Through the cooperation between the movable support rod 61 and the movable bearing hole 27, the movable support rod 61 can be restricted, thereby restricting the second clamping ring plate 6. Under the restriction of the movable bearing hole 27, when one driving ring sleeve 5 moves, it can drive the two second clamping ring plates 6 in the group to move towards each other or away from each other through the connecting movable rod 56. When the two second clamping ring plates 6 in the group move towards each other, the prestressed steel bar 9 can be clamped and fixed. When the two second clamping ring plates 6 in the group move away from each other, the prestressed steel bar 9 can be released.

[0054] like Figure 11 and Figure 12As shown, the rebar end clamping and fixing assembly also includes a clamping mating strip 7, which is located in the assembly 34. The clamping mating strip 7 is moved by the driving ring sleeve 5 to clamp the prestressed rebar 9. Specifically, a mating support rod 71 is welded to the clamping mating strip 7. The mating support rod 71 is inserted into the mating connecting hole 38, and the mating support rod 71 and the mating connecting hole 38 can restrict the clamping mating strip 7. The mating support rod 71 can move along the mating connecting hole 38. Additionally, part of the mating support rod 71 protrudes from the outside of the assembly 34. A hemispherical support block 72 is welded to the end of the mating support rod 71 away from the clamping mating strip 7. The surface of the hemispherical support block 72 is smooth and burr-free. A second connecting spring 73 is sleeved on the mating support rod 71. The second connecting spring 73 is located on the outside of the assembly 34, and the second... The two ends of the connecting spring 73 are welded and fixed to the hemispherical support block 72 and the protruding support block 37, respectively. The second connecting spring 73 shell is used to reset the clamping mating strip 7. A conical inner support platform 51 is integrally formed and fixed at the end of the drive ring sleeve 5 away from the protruding connecting plate 55. The surface of the conical inner support platform 51 is smooth and burr-free, and the conical inner support platform 51 is in contact with the hemispherical support block 72. In this way, when the drive ring sleeve 5 moves, it can drive the hemispherical support block 72 to move under the action of the conical inner support platform 51, and then drive the clamping mating strip 7 to move. Multiple clamping mating strips 7 are arranged around the prestressed steel bar 9. When the conical inner support platform 51 drives the clamping mating strips 7 to move, the multiple clamping mating strips 7 cooperate with each other to clamp and fix the prestressed steel bar 9 around its circumference. The number of clamping mating strips 7 can be set according to actual needs.

[0055] like Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 13 As shown, the clamping drive assembly is a drive fitting sleeve 8. The drive fitting sleeve 8 is installed on the prestressed bearing ring 2 and cooperates with the movable bearing block 4 to drive the movable bearing block 4 to move. Specifically, a first thread 22 is provided on the prestressed bearing ring 2, and a protruding bearing ring 23 is integrally formed and fixed at one end of the prestressed bearing ring 2. A connecting bracket 24 is welded and fixed on the protruding bearing ring 23 by welding process. A limit stop ring 25 is welded and fixed on the connecting bracket 24. A second thread 81 is provided at one end of the drive fitting sleeve 8. The second thread 81 cooperates with the first thread 22, so that the drive fitting sleeve 8 is threadedly fitted onto the prestressed bearing ring 2. A support ring platform 82 is integrally formed and fixed on the drive fitting sleeve 8. A fitting ring groove 83 is opened on the support ring platform 82. An inclined protrusion 831 is integrally formed and fixed inside the fitting ring groove 83. The surface of the inclined protrusion 831 is smooth and burr-free. Figure 10As shown, a movable mating rod 41 is also welded and fixedly installed on the movable support block 4. The surface of the movable mating rod 41 is smooth and burr-free. Figure 13 As shown, the movable mating rod 41 is inserted into the mating ring groove 83 and never separates from the mating ring groove 83.

[0056] When installing the prestressed steel bar 9, the prestressed bearing ring 2 is installed first. The prestressed bearing ring 2 is sleeved onto the supporting rod 12 through the supporting circular hole 21, ensuring that the prestressed bearing ring 2 contacts the supporting frustum 11. Then, the prestressed steel bar 9 is inserted into the supporting ring sleeve 36 at one end of the steel mold body 1, passing through the steel mold body 1 until it is inserted into the supporting ring sleeve 36 at the other end of the steel mold body 1. At this point, the prestressed steel bar 9 is supported and positioned under the action of the supporting ring sleeve 36. Afterwards, multiple prestressed steel bars 9 can be synchronously clamped and fixed by rotating the driving fitting sleeve 8 on the prestressed bearing ring 2, causing it to move under the action of the thread. As the driving fitting sleeve 8 rotates and moves, the moving fitting rod 41 on the movable bearing block 4 will engage with the inclined... The inclined protruding strip 831 contacts the moving mating rod 41, which, under the action of the inclined protruding strip 831, will drive the moving mating sleeve 8 to move until it contacts the limiting retaining ring 25. At this point, the driving mating sleeve 8 will no longer be able to move. As the moving mating rod 41 moves, it will also drive the movable bearing block 4 to move towards the supporting mating block 32, so that the first connecting spring 44 is in a compressed state. As the movable bearing block 4 moves, it will also drive the first clamping ring plate 45 to move, so that the first clamping ring plate 45 contacts the prestressed steel bar 9. In this way, the prestressed steel bar 9 can be clamped and fixed by the cooperation of the first clamping ring plate 45 and the prestressed steel bar 9. As the movable bearing block 4 moves, under the action of the moving mating frame 42, it will also drive the moving mating rod 41 to move towards the supporting mating block 32. The movable support column 54 moves, which in turn drives the drive ring sleeve 5 to move. Under the action of the connecting movable rod 56, the drive ring sleeve 5 moves the two second clamping ring plates 6 in the set towards each other, thus bringing them into contact with the prestressed steel bars 9 between them, ultimately clamping and fixing the prestressed steel bars 9. Additionally, during the movement of the drive ring sleeve 5, under the action of the conical inner support platform 51, it drives the hemispherical support block 72 towards the assembly 34. As the hemispherical support block 72 moves, the second connecting spring 73 is compressed, simultaneously driving the clamping mating strip 7 towards the prestressed steel bars 9. With the movement of the clamping mating strip 7, the second connecting spring 73 is compressed, causing it to move towards the prestressed steel bars 9. The clamping strips 7 come into contact with the prestressed steel bars 9, and under the action of multiple clamping strips 7, the prestressed steel bars 9 can be clamped and fixed. This multi-layer clamping and fixing action ensures sufficient clamping and fixing strength for the prestressed steel bars 9. After one end of the prestressed steel bar 9 is fixed, the other end can be clamped and fixed. Once both ends of the prestressed steel bar 9 are clamped and fixed, a tensile force can be applied to the prestressing bearing ring 2 using a jack. This allows for simultaneous tensioning of multiple prestressed steel bars 9 through the prestressing bearing ring 2. Since prestressing bearing rings 2 are installed at both ends of the steel mold body 1, simultaneous tensioning of both ends of the prestressed steel bars 9 is possible. Alternatively, tensioning can be performed at only one end of the prestressed steel bar 9.During one-end tensioning, the prestressed bearing ring 2 at the other end of the prestressed steel bar 9 will abut against the supporting frustum 11. The supporting frustum 11 restricts the prestressed bearing ring 2, thus smoothly achieving one-end tensioning of the prestressed steel bar 9. The operation is simple, convenient, and quick. Furthermore, when the prestressed bearing ring 2 needs to be disassembled, the driving sleeve 8 is rotated in the reverse direction. As the driving sleeve 8 moves and rotates in the reverse direction, the movable bearing block 4 will reset under the action of the first connecting spring 44. Simultaneously, it will also drive the driving ring sleeve 5 to reset. As the driving ring sleeve 5 resets, it will drive the two second clamping ring plates 6 in the set to move in opposite directions. Simultaneously, under the action of the second connecting spring 73, it will also drive the clamping strip 7 to reset, thus releasing the prestressed steel bar 9.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel formwork for a utility pole with a ring-shaped linkage prestressing mechanism, characterized in that: include: The steel mold body has prestressed steel bars inserted inside it; A rebar support and positioning assembly is symmetrically installed at both ends of the steel mold body to support the prestressed rebar. Supporting round rods are symmetrically fixed at both ends of the steel mold body. The steel bar support positioning assembly includes a prestressed bearing ring and a counterweight bearing plate. The prestressed bearing ring is sleeved on the support rod, and the counterweight bearing plate is fixedly installed on the prestressed bearing ring. Support moving grooves are symmetrically opened on both sides of the counterweight bearing plate. A support block is fixedly installed at the lower end of the counterweight bearing plate. The support block has a plug-in socket, and an assembly is fixedly installed at the lower end of the support block. The plug-in socket is connected to the assembly. An inner support strip is fixedly installed inside the assembly. A support ring is fixedly installed at the upper end of the inner support strip. A protruding support block is also fixedly installed on the assembly. A connecting hole is opened on the protruding support block and is connected to the assembly. The prestressed steel bars are supported by the assembly. A rebar end clamping and fixing assembly is installed on a rebar support and positioning assembly and is used to clamp and fix the ends of prestressed rebars. The steel bar end clamping and fixing assembly includes: a movable bearing block, a driving ring sleeve, a second clamping ring plate, and a clamping mating strip. The movable bearing block is movably mounted on the counterweight bearing plate. An insert bearing rod is fixed on the movable bearing block. The insert bearing rod is inserted into the insert bearing hole. A first connecting spring is sleeved on the insert bearing rod. The two ends of the first connecting spring are respectively fixed on the movable bearing block and the supporting mating block. A first clamping ring plate is fixedly installed on the plug-in support rod. When the first clamping ring plate is in the assembly, the first clamping ring plate is in contact with the prestressed steel bar. The prestressed steel bar is tightly clamped by the cooperation of the first clamping ring plate and the support ring sleeve. The drive ring sleeve is also movably mounted on the counterweight bearing plate, and the second clamping ring plate is installed in the prestressed bearing ring; The drive ring sleeve is movably connected to the movable support block. The movable support block drives the drive ring sleeve to move. A movable mating frame is fixed on the movable support block. A mating support bar is symmetrically fixed on the drive ring sleeve. A movable support plate is fixed on the mating support bar. The movable support plate is partially inserted into the support moving groove and contacts the inner wall of the support moving groove. A movable support column is fixed on the mating support bar and is inserted into the movable mating frame. When the movable support block moves, it will also drive the movable mating frame to move. As the movable mating frame moves, it will drive the movable support column to move, thereby causing the drive ring sleeve to move. Symmetrically fixed protruding connecting plates are mounted on the drive ring sleeve. Connecting movable rods are hinged to the protruding connecting plates and are movably connected to the second clamping ring plate through the connecting movable rods. A movable support rod is fixed on the second clamping ring plate, and a connecting bearing block is fixed on the movable support rod. The connecting bearing block is hinged to the connecting movable rod. An inner bearing plate is fixed inside the prestressed bearing ring. A movable bearing hole is opened on the inner bearing plate, and a movable support rod is inserted into the movable bearing hole. The drive ring sleeve drives the second clamping ring plate to move and clamp the prestressed steel bars. The clamping mating strip is in the assembly and is moved by the driving ring sleeve to clamp the prestressed steel bars. A mating support rod is fixed on the clamping mating strip and inserted into the mating connecting hole. A hemispherical support block is fixed on the mating support rod, and a second connecting spring is sleeved on the mating support rod. A conical inner support platform is fixed inside the driving ring sleeve and contacts the hemispherical support block. When the driving ring sleeve moves, it drives the hemispherical support block to move under the action of the conical inner support platform, thereby driving the clamping mating strip to move. A clamping drive assembly is also mounted on the rebar support and positioning assembly, which cooperates with the rebar end clamping and fixing assembly to drive the rebar end clamping and fixing assembly to move. The clamping drive assembly is a drive mating sleeve, which is installed on the prestressed bearing ring and cooperates with the movable bearing block to drive the movable bearing block to move. The prestressed bearing ring is provided with a first thread, and a protruding bearing ring is fixedly provided at one end of the prestressed bearing ring. A connecting bracket is fixed on the protruding bearing ring, and a limit stop ring is fixed on the connecting bracket. A second thread is provided at one end of the drive mating sleeve, and the second thread cooperates with the first thread. A support ring platform is fixedly provided on the drive mating sleeve, and a mating ring groove is opened on the support ring platform. An inclined protrusion is fixedly provided inside the mating ring groove. A movable mating rod is fixedly provided on the movable bearing block. The movable mating rod is inserted into the mating ring groove and never separates from the mating ring groove.

2. The pole steel mold with a ring-linked prestressing mechanism according to claim 1, characterized in that: The steel mold body has symmetrically fixed support truncated cones at both ends, and support rods are fixedly installed on the support truncated cones to support the rebar support and positioning components.

3. A pole steel mold with a ring-linked prestressing mechanism according to claim 2, characterized in that: A support hole is provided on the prestressed bearing ring, and the support hole cooperates with the support rod to support the prestressed bearing ring.

Images