Deviation correcting device

Abstract

The utility model belongs to the technical field of engineering construction, and particularly relates to a deviation rectifying device which comprises a guide seat, a plurality of guide holes are formed in the guide seat, a single steel strand penetrates through each guide hole, a mounting seat is arranged on the periphery of the guide seat, an acute angle is formed between the upper seat surface and the lower seat surface of the mounting seat, and the center line of each guide hole is a curve section. The bending direction of the center line of the guide hole is opposite to the opening direction of the included angle between the upper and lower seat surfaces of the mounting seat. After the mounting seat is abutted against and matched with the pipe orifice of the embedded pipe, the mounting seat is rotated to enable the bending direction of the guide hole in the guide seat to be consistent with the preset deflection direction of the cable body, and the guide hole forces the steel strand penetrating through the guide hole to deflect towards the pipe orifice at the other end of the embedded pipe; therefore, stable and reliable installation of the cable body is achieved under the condition that the embedded pipe body or an embedded pipe embedded structure is not damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering construction, and particularly relates to a deviation correcting device. Background Art

[0002] The lower part of the assembled steel-concrete wind turbine tower is a concrete tower. At present, the concrete tower is usually tensioned as a whole by using the external post-tensioning prestressing process to ensure the overall working performance between the concrete segments. The upper and lower ends of the steel strands pass through the pre-buried holes at the top and bottom of the concrete tower and are anchored there. However, in the actual construction process, the core axes of the upper and lower pre-buried pipes are often arranged non-concentrically.

[0003] Chinese patent CN110468687A discloses a pre-buried pipe structural component of a bridge with a large-angle correction structure, including a support pipe, a pre-buried pipe and a correction structure, wherein the correction structure is a large-angle correction structure, which is either composed of a flange group I consisting of two ordinary flanges and two inclined pads or a flange group II consisting of two flanges with inclinations, wherein the first flange and the second flange of the flange group I or the third flange and the fourth flange of the flange group II are respectively fixed to the bottom end of the support pipe and the top end of the pre-buried pipe, and the support pipe and the pre-buried pipe are connected either by the first flange, the second flange and the two inclined pads and a bolt assembly; or by the third flange and the fourth flange and the bolt assembly. In this way, when in use, the angle between the support pipe and the axis of the pre-buried pipe can be adjusted by adjusting the relative position between the two inclined pads in the circumferential direction or adjusting the relative position between the two flanges with inclinations, thereby realizing large-angle correction of the pre-buried pipe in any direction. The cable body for wind turbine tower is usually composed of multiple steel strands. When in use, the cable body inserted into the support tube and the embedded tube is bent. The steel strands on the inside of the bent section of the cable body need to bear the radial force exerted on them by the outer steel strands, which may damage the outer sheath of the steel strands or even cause the steel strands to break, thereby affecting the structural performance of the tower. Utility Model Content

[0004] The utility model aims to provide a deviation correction device which can reliably guide the cable body to penetrate into the offset pre-buried pipe and ensure the service life of the cable body.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a correction device, including a guide seat, a plurality of guide holes are opened on the guide seat, each guide hole is for a single steel strand to pass through, a mounting seat is provided on the outer periphery of the guide seat, the upper seat surface and the lower seat surface of the mounting seat are arranged at an acute angle as a whole, the center line of the guide hole is a curved segment, and the bending direction of the center line of the guide hole is opposite to the opening direction of the angle between the upper and lower seat surfaces of the mounting seat.

[0006] Compared with the prior art, the utility model has the following technical effects: after the mounting seat is abutted against the pipe opening of the embedded pipe, the mounting seat is rotated so that the bending direction of the guide hole in the guide seat is consistent with the preset deflection direction of the cable body. The guide hole can force the steel strand inserted therein to deflect toward the other end of the embedded pipe, thereby realizing stable and reliable installation of the cable body without damaging the embedded pipe body or the embedded pipe embedded structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The following is a brief description of the contents and symbols in the drawings of this specification:

[0008] Figure 1 is a front view of the first embodiment;

[0009] Figure 2 yes Figure 1 AA section view;

[0010] Figure 3 is a half-section schematic diagram of the first embodiment in use;

[0011] Figure 4 , 5 is a three-dimensional schematic diagram of embodiment 2;

[0012] Figure 6 It is a right side view of the second embodiment;

[0013] Figure 7 is an axial half-section schematic diagram of the second embodiment in use;

[0014] Figure 8 This is a front view of the third embodiment when a steel strand is inserted;

[0015] Fig. 9 yes Figure 8 BB cross-sectional view;

[0016] Fig.10 yes Figure 8 CC section view;

[0017] Fig.11 is an axial half-section schematic diagram of the fourth embodiment;

[0018] Fig.12 is a schematic radial cross-sectional view of the positioning baffle of the fourth embodiment;

[0019] Fig.13 is an axial half-section schematic diagram of the fifth embodiment;

[0020] Fig.14 is a schematic radial cross-sectional view of the positioning block of the fifth embodiment;

[0021] Fig.15 is an axial half-section schematic diagram of the use state of the third embodiment;

[0022] Fig.16 It is an axial half-section schematic diagram of the use state of the sixth embodiment. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model is further described in detail below through the description of embodiments in conjunction with the accompanying drawings.

[0024] Embodiment 1

[0025] A deviation correction device includes a guide seat 10, on which a plurality of guide holes 11 are provided, each guide hole 11 is for a single steel strand to pass through, and the center line a of the guide hole 11 is a curved segment. In this embodiment, the center line a of the guide hole 11 is an arc segment with a consistent curvature at all locations. In order to reduce the radial stress borne by the steel strand 2 in the working state, thereby ensuring the bearing capacity and service life of the steel strand 2, the curvature radius of the center line a of the guide hole 11 in the preferred solution is greater than 2m. In other embodiments, the center line a of the guide hole 11 can also be a curved segment with a changing curvature, such as a curved segment combining a straight segment and an arc segment, or a curved segment with a large curvature at both ends and a small curvature in the middle. In specific implementation, the aperture of the guide hole 11 should be slightly larger than the outer diameter of a single steel strand 2, so that the steel strand 2 can be forced to deflect while being easy to pass through. The angle between the tangents at the upper and lower ends of the center line a of the guide hole 11 is the target deflection angle of the steel strand passing through the guide hole 11. In the preferred embodiment, in order to make the deflection angle of the steel strand 2 consistent with the offset angle of the embedded pipe 1, the tangent angle at the two end points of the center line a of the guide hole 11 should be equal to the offset angle of the embedded pipe 1.

[0026] In order to achieve reliable connection between the guide seat 10 and the embedded pipe 1, as shown in the attached Figure 1 , 2 As shown, a mounting seat 20 is provided on the outer periphery of the guide seat 10, and the upper seat surface and the lower seat surface of the mounting seat 20 are arranged at an acute angle as a whole, so as to adjust the installation posture of the guide seat 10. Figure 3 As shown, the core of the embedded tube 1 embedded in the bottom of the tower is skewed, the mounting seat 20 is abutted against the tube end of the embedded tube 1, and the guide seat 10 located below the mounting seat 20 is inserted into the tube body of the embedded tube 1. By rotating and adjusting the assembly posture of the mounting seat 20, the relative deflection angle between the guide seat 10 and the embedded tube 1 can be adjusted, thereby achieving reliable installation of the correction device and ensuring that the guiding direction of the guide hole 11 meets the correction requirements.

[0027] Furthermore, the bending direction of the center line a of the guide hole 11 is opposite to the opening direction of the angle between the upper and lower seat surfaces of the mounting seat 20. Figure 3As shown, the body of the embedded pipe 1 is inclined to the lower left, when the guide steel strand 2 is bent to the left, at the same time, in order to make the upper surface of the mounting seat 20 a plane so as to connect other components, the mounting seat 20 is preferably an inclined wedge with a larger left side and a smaller right side, that is, the bending direction of the guide hole 11 is left, and the opening direction of the angle between the upper and lower seat surfaces of the mounting seat 20 is right, and the two directions are opposite. In addition, by observing the seat body of the mounting seat 20 exposed outside the embedded pipe 1, the bending direction of the guide hole 11 inserted into the lumen of the embedded pipe 1 can be known, which is convenient for the operator to adjust the deviation correction device to the preset installation posture, so that the deflection direction of the guide hole 11 is consistent with the offset direction of the embedded pipe 1, and the reliable positioning and installation of the cable body under the condition of large angle offset of the embedded pipe 1 can be conveniently and reliably realized without destroying the foundation or the body of the embedded pipe 1. In other embodiments, a mark can also be set on the seat body of the mounting seat 20 to distinguish and identify the deflection direction of the guide hole 11.

[0028] In the preferred embodiment, in order to protect the steel strands from being damaged or even broken by the indentation on the end face of the guide hole 11, it is necessary to reduce the angle between the tangential direction of the hole end of the guide hole 11 and the extension direction of the steel strand located above the guide seat 10. Since the steel strands located above the guide seat 10 are usually in a suspended state, the steel strands located above the guide hole 11 are arranged as a plumb bob. In the assembled state, the tangential direction of the hole end of the guide hole 11 in the correction device should also be arranged as a plumb bob. To this end, in the present embodiment, the upper seat surface of the guide seat 10 is a plane and is arranged parallel to the upper seat surface of the mounting seat 20, and the tangential direction of the upper end of the center line a of each guide hole 11 is perpendicular to the upper seat surface of the guide seat 10. When in use, as shown in the attached Figure 3 As shown, the angle between the upper and lower seat surfaces of the mounting seat 20 is α, the angle between the tangents at the two end points of the center line a of the guide hole 11 is β, and the angle between the body of the embedded pipe 1 and the plumb bob is γ. For ease of assembly and adjustment, let α=β=γ, that is, the angle between the tangents at the two ends of the center line a of the guide hole 11 is equal to the angle between the upper and lower seat surfaces of the mounting seat 20, and is equal to the offset angle of the body of the embedded pipe 1. In this way, the mounting seat 20 is covered with the end of the embedded pipe 1 and the installation posture of the mounting seat 20 is adjusted so that the mounting seat 20 is in the horizontal arrangement position of the upper seat surface, then the upper seat surface of the guide seat 10 is also arranged horizontally, the tangent direction of the upper hole end of the guide hole 11 is parallel to the plumb bob direction, and the tangent direction of the lower hole end is parallel to the tube core direction of the embedded pipe 1, thereby ensuring accurate and reliable guidance of the deflection direction and deflection angle of the steel strand 2. Furthermore, in this embodiment, the opening of the guide hole 11 is an outward-expanding chamfer, which facilitates the introduction of the steel strand and prevents the steel strand from being damaged by the hole end of the guide hole 11.

[0029] In order to facilitate the production and use of the guide seat 10, the upper openings of the guide holes 11 are arranged flush, and the center lines a of the guide holes 11 are arranged in parallel. In this embodiment, the guide seat 10 is composed of a plurality of unit guide tubes 12, the tube walls of adjacent unit guide tubes 12 are connected, and the tube cavities of the unit guide tubes 12 form a guide hole 11. Figure 2 As shown, the tube wall of the unit guide tube 12 is attached and fixedly connected, which not only makes the structure more compact and can meet the needs of large-angle correction, but also enhances the wall strength at the joint of adjacent tube walls, and can improve the strength of the guide seat 10 without adding additional components, thereby ensuring the reliability of the correction device. The center lines a of each guide hole 11 are arranged in parallel, so that the tube body shape of each unit guide tube 12 is consistent. During production and processing, a bending device can be used to bend all the unit guide tubes 12, which can ensure the consistency of each unit guide tube 12, and then ensure the consistency of the deflection guidance of each single steel strand 2 in the cable body. In addition, since the upper openings of each guide hole 11 are arranged flush, the unit guide tubes 12 obtained by bending are arranged according to the arrangement of each steel strand 2 in the cable body, and the alignment of one end of the unit guide tube 12 is maintained and the two adjacent unit guide tubes 12 are welded and connected in sequence, so that the required guide seat 10 can be obtained, with fewer production and processing steps and simple operation.

[0030] In order to reliably maintain the posture of the steel strands 2 inserted in the hole and to arrange the steel strands 2 in the cable body separately, and to prevent the guide seat 10 from being deformed by the steel strands 2 and applying radial force to the adjacently arranged steel strands 2 to cause damage or breakage of the steel strands 2, the guide seat 10 in this embodiment is made of metal material, and the wall thickness of the guide hole 11 is greater than 2 mm. The wall of the guide hole 11 should be a smooth wall surface to prevent the steel strands 2 from interfering with the wall of the guide hole 11 or the two from wearing each other and affecting the service life of the cable body.

[0031] In this embodiment, the mounting seat 20 is arranged at the upper end of the guide seat 10. Figure 3As shown, most of the seat body of the guide seat 10 can be accommodated in the lumen of the embedded pipe 1, and the radial stress borne by the correction device in the working state can be reliably transmitted to the structure through the embedded pipe 1, so that the correction device can bear the radial force together with the embedded pipe 1 and the structure as a whole, thereby ensuring the reliability of the force of the correction section. In other embodiments, the mounting seat 20 can also be fixed to the middle section or lower end of the guide seat 10 to meet various correction needs. Furthermore, in this embodiment, the upper seat surface of the guide seat 10 is arranged flush with the seat surface of the mounting seat 20, and the upper seat surface and the lower seat surface of the mounting seat 20 are arranged at an acute angle as a whole and are consistent with the deflection angle of the embedded pipe 1. In this way, when in use, the upper surface of the correction device exposed is a plane, which can cooperate well with other cable body connection components or adjustment and positioning components, ensuring the compatibility of the correction device with conventional anchoring connections and positioning components. In addition, the correction device can also be applied to the case where the embedded pipe at the upper end of the cable body is deflected. Specifically, the attached Figure 1 The deviation correcting device shown is inverted and fixedly connected to the bottom of the pre-buried pipe at the upper end of the cable body.

[0032] Embodiment 2

[0033] The difference between this embodiment and the first embodiment is that a positioning block 40 is attached to the outer periphery of the guide seat 10. Figure 4 , 5 As shown, in this embodiment, the positioning block 40 is a ring continuously arranged around the guide seat 10, and the outer peripheral surface of the positioning block 40 is located in the same cylindrical surface, and the radial dimension of the cylindrical surface is smaller than the radial dimension of the mounting seat 20. In the preferred embodiment, the outer diameter of the positioning block 40 is slightly smaller than the inner diameter of the embedded pipe 1. Figure 7 As shown, the positioning block 40 is arranged below the mounting seat 20 and is accommodated in the lumen of the embedded pipe 1 together with the seat body of the guide seat 10. The positioning block 40 can support the seat body of the guide seat 10 located in the lumen of the embedded pipe 1, realize the radial reliable positioning of the seat body of the guide seat 10 in the lumen of the embedded pipe 1, avoid the radial displacement of the seat body of the guide seat 10 inside the lumen of the embedded pipe 1, and thus ensure the reliability of the deflection direction and angle of the steel strand 2 passing through the guide hole 11.

[0034] As attached Figure 6 As shown, in this embodiment, the middle seat body of the mounting seat 20 extends downward to form a positioning ring 21, and the outer ring surface of the positioning ring 21 is coplanar with the outer surface of the positioning block 40. Figure 7 As shown, the lower seat surface of the mounting seat 20 abuts against the end surface of the tube body of the embedded tube 1 to achieve axial positioning of the two, and the ring body of the positioning ring 21 abuts against or has a clearance fit with the inner wall of the tube cavity of the embedded tube 1 to achieve radial positioning of the two. In other embodiments, the mounting seat 20 may not be provided with the positioning ring 21, or may be provided with positioning blocks arranged at intervals to achieve radial positioning of the mounting seat 20.

[0035] Embodiment 3

[0036] The difference between this embodiment and the second embodiment is that the guide seat 10 is hollowly sleeved in the outer tube 50, and the upper tube end of the outer tube 50 is fixedly connected to the mounting seat 20. The outer circumferential surfaces of the positioning block 40 and the positioning ring 21 are located in the same cylindrical surface, and the diameter of the cylindrical surface is consistent with the inner diameter of the outer tube 50. The positioning block 40 is sandwiched between the outer tube 50 and the guide seat 10, and the matching posture of the guide seat 10 and the outer tube 50 can be reliably maintained.

[0037] Details are as attached Figure 8 , 9 As shown, the outer tube 50 covers the seat body of the guide seat 10, and the radial positioning of the guide seat 10 in the tube cavity of the outer tube 50 is achieved through the positioning block 40 and the positioning ring 21. This can effectively protect the guide seat 10 and the positioning block 40, and prevent the correction device from being deformed and unusable during transportation or storage.

[0038] When this embodiment is used, the steel strand 2 does not need to be stripped of the outer sheath, and there is no need to fill the guide seat 10 or the outer tube 50 with anti-corrosion material, and there is no need to seal the guide hole 11 and the end of the outer tube 50 to prevent the loss of anti-corrosion material. The structure is simple and easy to use.

[0039] Embodiment 4

[0040] The difference between this embodiment and the third embodiment is that the tube bodies of the unit guide tubes 12 are arranged at intervals, and the tube bodies of the unit guide tubes 12 are inserted and fixed in the corresponding positioning holes arranged on the positioning partition 30 to form the positioning seat 10. In this way, the interaction between the adjacently arranged unit guide tubes 12 can be avoided, and the independence of each unit guide tube 12 and the steel strands 2 inserted therein can be ensured, but the radial dimension of the guide seat 10 is relatively large, which is suitable for the case where the inner diameter of the pre-buried tube 1 is relatively large or the deflection angle of the guide hole 11 is relatively small.

[0041] In this embodiment, the outer ring of the positioning baffle 30 has the same function as the positioning block 40 in the third embodiment, that is, the positioning baffle 30 can maintain the spacing between the unit guide tubes 12 while also realizing the radial positioning of the positioning seat 10 in the outer tube 50. Of course, in other embodiments, the positioning block 40 can also be separately arranged around the outer circumference of the unit guide tube 12 bundle.

[0042] Embodiment 5

[0043] The difference between this embodiment and the third embodiment is that the guide seat 10 is an integrally formed block, that is, a plurality of guide holes 11 are provided at intervals on the strip-shaped block to form the guide seat 10. In addition, the positioning blocks 40 are blocks arranged at intervals around the guide seat 10. Fig.14In the embodiment shown, three positioning rings 40 are arranged at intervals in the circumferential direction of the guide seat 10. The positioning rings 40 can also be formed integrally with the guide seat 10. This can save materials used in product production and reduce the weight of the correction device while achieving radial positioning of the guide seat 10.

[0044] Embodiment 6

[0045] The difference between this embodiment and the third embodiment is that the mounting seat 20 is arranged at the lower end of the guide seat 10. Fig.16 As shown, when the inner diameter of the lumen of the embedded pipe 1 is small or the radial dimension of the guide seat 10 is too large, the mounting seat 20 can be arranged at the middle or lower end of the guide seat 10. In specific implementation, in order to improve the reliability of the deviation correction device, a supporting mechanism can be arranged beside the seat body of the guide seat 10 exposed at the upper end of the embedded pipe 1 to prevent the deviation correction section from radial displacement.

Claims

1. A deviation correction device, characterized in that: The invention comprises a guide seat (10), a plurality of guide holes (11) are formed on the guide seat (10), each guide hole (11) is for a single stranded wire to pass through, a mounting seat (20) is provided on the outer periphery of the guide seat (10), an upper seat surface and a lower seat surface of the mounting seat (20) are arranged at an acute angle as a whole, a center line of the guide hole (11) is a curved line segment, and a bending direction of the center line of the guide hole (11) is opposite to an opening direction of an angle between the upper seat surface and the lower seat surface of the mounting seat (20).

2. The deviation correcting device according to claim 1, characterized in that: A plurality of guide holes (11) are arranged at intervals on the strip-shaped block to form a guide seat (10).

3. The deviation correction device according to claim 1, characterized in that: The guide seat (10) is formed by a clustered combination of a plurality of unit guide tubes (12), and the tube cavities of the unit guide tubes (12) form a guide hole (11).

4. The deviation correction device according to claim 3 is characterized in that: The tube walls of adjacent unit guide tubes (12) are connected.

5. The deviation correction device according to claim 3, characterized in that: The tube bodies of the unit guide tubes (12) arranged at intervals on the tube wall are inserted and fixed in corresponding positioning holes arranged on the positioning partition plate (30).

6. The deviation correcting device according to any one of claims 1 to 5, characterized in that: The included angle of the tangent lines at the upper and lower ends of the center line of the guide hole (11) is equal to the included angle of the upper and lower seat surfaces of the mounting seat (20).

7. The deviation correcting device according to claim 6, characterized in that: The tangent direction of the upper end of the center line of the guide hole (11) is perpendicular to the upper seat surface of the mounting seat (20).

8. The deviation correcting device according to claim 7, characterized in that: The upper seat surface of the guide seat (10) is a plane and is arranged parallel to the upper seat surface of the mounting seat (20), and the upper openings of the guide holes (11) are arranged flush; The center line of the guide hole (11) is an arc segment, and the center lines of the guide holes (11) are arranged in parallel; The curvature radius of the center line of the guide hole (11) is greater than 2m, and the opening of the guide hole (11) is an outward-expanding chamfer.

9. The deviation correcting device according to claim 1, characterized in that: A positioning block (40) is attached to the outer circumference of the guide seat (10), and the positioning block (40) is a ring continuously arranged in the circumferential direction of the guide seat (10) or a block arranged in the circumferential direction of the guide seat (10) at intervals; the outer circumferential surface of the positioning block (40) is located in the same cylindrical surface, and the radial dimension of the cylindrical surface is smaller than the radial dimension of the mounting seat (20).

10. The deviation correcting device according to claim 9, characterized in that: The middle seat body of the mounting seat (20) extends downward to form a positioning ring (21), and the outer ring surface of the positioning ring (21) is coplanar with the outer surface of the positioning block (40).

11. The deviation correcting device according to claim 9 or 10, characterized in that: The guide seat (10) is hollowly sleeved in the outer tube (50), and the positioning block (40) is clamped between the outer tube (50) and the guide seat (10); the upper end of the outer tube (50) is fixedly connected to the mounting seat (20).

12. The deviation correcting device according to claim 1, characterized in that: The wall of the guide hole (11) is a smooth wall surface; The guide seat (10) is made of metal material, and the wall thickness of the guide hole (11) is greater than 2 mm; The mounting seat (20) is fixedly arranged at the upper end or the middle upper section of the guide seat (10), and the positioning block (40) is arranged below the mounting seat (20).

Images