A kind of positioning protection jig frame for pier body vertical prestressed steel strand

Abstract

The utility model belongs to bridge construction technical field discloses a kind of for pier body vertical prestressed steel strand positioning protection jig frame. For pier body vertical prestressed steel strand positioning protection jig frame includes vertical support component, horizontal support component, protection component and fixed component, first vertical support piece and second vertical support piece in vertical support component can be fixedly connected and second support pipe along vertical direction's support height can be adjusted, steel strand is arranged in the inside of first vertical support piece and second vertical support piece;Horizontal support piece in horizontal support component extends along first direction and multiple support pieces are interval arranged along second direction, jig frame platform is fixedly connected on horizontal support piece;In protection component, cover plate can cover the top of protective sleeve;Fixed component in fixed component is configured as fixed first support pipe and second support pipe, fastener is configured as fastening protective sleeve on steel strand. The utility model can improve construction efficiency, reduce installation risk.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a positioning and protection frame for vertical prestressed steel strands in piers. Background Technology

[0002] The piers and beams of cantilever cast-in-place box girders can be connected by rigid, hinged, or elastic methods. In construction scenarios with elastic connections, prestressed steel strands are typically laid out according to the actual site conditions to enhance the overall structural stability. The prestressed steel strands strengthen the connection reliability between the piers and beams by applying prestress, improving the overall stiffness and stability of the structure and ensuring the load-bearing safety of long-span bridges. Because the steel strands are relatively long and cannot be bent, to prevent their exposed portions from interfering with construction at various stages and to prevent long-term exposure and corrosion, positioning frames are usually used in actual construction to position, store, and fix them. This controls the layout posture and exposed length of the steel strands, reducing the impact of the external environment.

[0003] However, the existing positioning jigs cannot flexibly adjust their height to match the different requirements of exposed steel strand length for different pier segments or different projects, affecting the construction progress. Furthermore, the existing positioning jigs lack protective structures and cannot effectively protect the prestressed steel strands, making them susceptible to mechanical damage from falling concrete and collisions with construction tools. They are also easily corroded by rainwater and mud, reducing structural strength and posing safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning and protection frame for vertical prestressed steel strands in piers, which can improve construction efficiency and reduce installation risks.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A positioning and protection frame for vertical prestressed steel strands in a pier, comprising:

[0007] A vertical support assembly includes a first vertical support member and a second vertical support member. A plurality of the first vertical support members are arranged in a rectangular array. Each first vertical support member is slidably connected to a second vertical support member. The second vertical support member and the first vertical support member can be fixedly connected to adjust the support height of the second vertical support member in the vertical direction. Steel strands are threaded through the interior of the first vertical support member and the second vertical support member.

[0008] A lateral support assembly, wherein multiple sets of the lateral support assemblies are spaced apart along the vertical direction, the lateral support assembly includes a support member and a jig platform, the support member extends along a first direction and multiple support members are spaced apart along a second direction, the two ends of the support member are respectively connected to the first vertical support member, and / or the two ends of the support member are respectively connected to the second vertical support member, the first direction is perpendicular to the second direction, and the jig platform is fixedly connected to the support member;

[0009] The protective assembly includes a protective sleeve, a cover plate, and a rotating shaft. The protective sleeve is fitted onto the steel strand, the rotating shaft is fixedly connected to the top of the protective sleeve, and the cover plate is rotatably connected to the rotating shaft. The cover plate can cover the top of the protective sleeve.

[0010] The fixing component includes a fixing member and a fastener, the fixing member being configured to fix the first vertical support member and the second vertical support member, and the fastener being configured to secure the protective sleeve to the steel strand.

[0011] The aforementioned positioning and protection frame for vertical prestressed steel strands in piers includes a fixing member that is a limiting pin. The first vertical support member has a first positioning hole extending along the first direction and a second positioning hole extending along the second direction. The second vertical support member has a third positioning hole extending along the first direction and a fourth positioning hole extending along the second direction. The first positioning hole and the third positioning hole can be aligned vertically, and the second positioning hole and the fourth positioning hole can be aligned vertically. The limiting pin can be inserted into the first positioning hole and the third positioning hole, and / or the limiting pin can be inserted into the second positioning hole and the fourth positioning hole.

[0012] The aforementioned positioning and protection frame for vertical prestressed steel strands in the pier body includes a first vertical support member with a first positioning hole, a second vertical support member with multiple spaced third positioning holes along the vertical direction, a first vertical support member with a second positioning hole, and a second vertical support member with multiple spaced fourth positioning holes along the vertical direction.

[0013] The aforementioned positioning and protection frame for the vertical prestressed steel strands of the pier body includes a gravity block, which is fixedly connected to the cover plate. The gravity block can pull down the cover plate to press the cover plate tightly against the protective sleeve.

[0014] The aforementioned positioning and protection frame for the vertical prestressed steel strands of the pier body includes a traction rope. One end of the traction rope is fixedly connected to the end of the cover plate away from the rotating shaft, and the other end of the traction rope hangs down naturally after passing around the rotating shaft.

[0015] The aforementioned positioning and protection frame for the vertical prestressed steel strands of the pier body includes a clamp, wherein multiple clamps are spaced apart along the vertical direction.

[0016] The aforementioned positioning and protection frame for the vertical prestressed steel strands of the pier includes two sets of the transverse support components, and a ladder is provided between the two sets of the transverse support components. The ladder is inclined.

[0017] The aforementioned positioning and protection frame for vertical prestressed steel strands in the pier body also includes a flip plate. The frame platform of the upper horizontal support member has an entrance, and the flip plate is rotatably connected to the entrance of the frame platform. The flip plate can open or close the entrance.

[0018] The aforementioned positioning and protection frame for the vertical prestressed steel strands of the pier includes a telescopic section. The telescopic section is provided with multiple annular peaks and annular troughs at intervals along the vertical direction. The annular peaks and annular troughs are distributed alternately and continuously. When the telescopic section extends, the distance between two adjacent peaks increases, and when the telescopic section shortens, the distance between two adjacent peaks decreases.

[0019] The aforementioned positioning and protection frame for the vertical prestressed steel strands of the pier body has an annular groove on the side of the cover plate near the protective sleeve, and a sealing ring is installed in the annular groove.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a positioning and protection frame for vertical prestressed steel strands in piers. During use, the second vertical support is adjusted vertically, and the first and second vertical supports are fixed with fasteners to ensure stable support. Removing the fasteners allows for further adjustment of the second vertical support at different heights, improving construction applicability. It can be used for different pier segments without frequent frame replacements, thus increasing construction efficiency. The steel strands are threaded through the first and second vertical supports, preventing collisions with external tools and concrete. A protective sleeve further reduces the impact of collisions. A cover plate rotatably connects to the protective sleeve and covers it, preventing rainwater or mud from entering the steel strands and causing corrosion. This ensures the strength and service life of the steel strands, avoids damage during construction, and improves construction safety. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the positioning and protection frame for the vertical prestressed steel strands of the pier provided in this embodiment of the utility model from a first-view perspective;

[0023] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of the positioning and protection frame for the vertical prestressed steel strands of the pier provided in this embodiment of the utility model from a second perspective.

[0026] Figure 5 This is a schematic diagram of the structure of the protection component provided in this embodiment of the utility model;

[0027] Figure 6 This is a structural schematic diagram of the fastener provided in an embodiment of the present utility model.

[0028] In the picture:

[0029] 1. Vertical support assembly; 11. First vertical support member; 111. First positioning hole; 112. Second positioning hole; 12. Second vertical support member;

[0030] 2. Lateral support assembly; 21. Lateral support component; 22. Waiter platform;

[0031] 3. Protective components; 31. Protective sleeve; 32. Cover plate; 33. Rotating shaft; 34. Gravity block; 35. Traction rope;

[0032] 4. Fixing components; 41. Fasteners;

[0033] 5. Climbing ladders;

[0034] 6. Flip-up plate;

[0035] 7. Tighten the bolts. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] like Figures 1-6 As shown, the positioning and protection frame for the vertical prestressed steel strands of the pier includes a vertical support assembly 1, a horizontal support assembly 2, a protection assembly 3, and a fixing assembly 4. The vertical support assembly 1 includes a first vertical support member 11 and a second vertical support member 12. Multiple first vertical support members 11 are arranged in a rectangular array. Each first vertical support member 11 is slidably connected to a second vertical support member 12, and the second vertical support member 12 and the first vertical support member 11 can be fixedly connected to adjust the support height of the second vertical support member 12 in the vertical direction. Steel strands are threaded inside the first vertical support member 11 and the second vertical support member 12. Multiple sets of horizontal support assemblies 2 are arranged at intervals in the vertical direction. The horizontal support assembly 2 includes a horizontal support member 21 and a frame platform 22. The horizontal support member 21 extends in a first direction and... Multiple transverse support members 21 are spaced apart along the second direction. The two ends of each transverse support member 21 are connected to a first vertical support member 11, and / or the two ends of each transverse support member 21 are connected to a second vertical support member 12. The first direction is perpendicular to the second direction. The frame platform 22 is fixedly connected to the transverse support members 21. The protective assembly 3 includes a protective sleeve 31, a cover plate 32, and a rotating shaft 33. The protective sleeve 31 is fitted onto the steel strand. The rotating shaft 33 is fixedly connected to the top of the protective sleeve 31. The cover plate 32 is rotatably connected to the rotating shaft 33 and can cover the top of the protective sleeve 31. The fixing assembly 4 includes a fixing member and a fastener 41. The fixing member is configured to fix the first vertical support member 11 and the second vertical support member 12. The fastener 41 is configured to fasten the protective sleeve 31 to the steel strand. The first direction is as follows: Figure 1 As shown in the X direction, the second direction is as follows: Figure 4 Shown in the Y direction.

[0041] This utility model provides a positioning and protection frame for vertical prestressed steel strands in piers. During use, the second vertical support member 12 is adjusted vertically, and the first and second vertical support members 11 and 12 are fixed with fasteners to ensure stable support of the second vertical support member 12. Removing the fasteners allows for further adjustment of the second vertical support member 12 to different support heights, improving the applicability of construction and making it suitable for different pier segments. Frequent frame replacements are unnecessary, thus improving construction efficiency. The steel strands are threaded through the first and second vertical support members 11 and 12, preventing collisions with external tools and concrete. The steel strands are further protected by a protective sleeve 31, which reduces the impact of collisions. A cover plate 32 is rotatably connected to the protective sleeve 31 and covers it, preventing rainwater or mud from entering the steel strands and causing corrosion. This ensures the strength and service life of the steel strands, avoids damage during construction, and improves construction safety.

[0042] This embodiment does not specifically limit the shape of the first vertical support 11 and the second vertical support 12. Optionally, the first vertical support 11 and the second vertical support 12 are square steel tubes. When the second vertical support 12 moves within the first vertical support 11, the square first vertical support 11 can limit the square second vertical support 12, preventing the second vertical support 12 from twisting and improving the lifting efficiency.

[0043] In other embodiments, the first vertical support 11 and the second vertical support 12 may also be circular steel pipes.

[0044] In other embodiments, the first vertical support 11 can also be formed by joining two C-shaped channel steels together, with an internal cavity to accommodate the steel strands. Similarly, the second vertical support 12 can also be formed by joining two C-shaped channel steels together, with an internal cavity to accommodate the steel strands. C-shaped channel steels are readily available, which can reduce construction costs.

[0045] In this embodiment, see Figure 1 and Figure 2The fixing component is a limiting pin. The first vertical support 11 has a first positioning hole 111 extending in a first direction and a second positioning hole 112 extending in a second direction. The second vertical support 12 has a third positioning hole extending in the first direction and a fourth positioning hole extending in the second direction. The first positioning hole 111 and the third positioning hole can be aligned vertically, and the second positioning hole 112 and the fourth positioning hole can be aligned vertically. The limiting pin can be inserted into the first positioning hole 111 and the third positioning hole, and / or the limiting pin can be inserted into the second positioning hole 112 and the fourth positioning hole. Setting the first positioning hole 111 and the third positioning hole in the first direction, and setting the second positioning hole 112 and the fourth positioning hole in the second direction can improve the fixing effect, distribute the force, and increase the service life of the positioning and protection frame for the vertical prestressed steel strands of the pier.

[0046] Specifically, the first vertical support member 11 has a first positioning hole 111, the second vertical support member 12 has a plurality of spaced first positioning holes 111 along the vertical direction, the first vertical support member 11 has a second positioning hole 112, and the second vertical support member 12 has a plurality of spaced fourth positioning holes along the vertical direction. By adjusting the height of the first vertical support member 11 within the second vertical support member 12, the first positioning hole 111 and the third positioning hole, as well as the second positioning hole 112 and the fourth positioning hole, can be aligned, which facilitates the adjustment of the support height of the first vertical support member 11.

[0047] In other embodiments, the first vertical support member 11 is provided with a plurality of first positioning holes 111 spaced apart in the vertical direction, the second vertical support member 12 is provided with a third positioning hole, the first vertical support member 11 is provided with a plurality of second positioning holes 112 spaced apart in the vertical direction, and the second vertical support member 12 is provided with a fourth positioning hole.

[0048] In other embodiments, the first vertical support member 11 is provided with a plurality of first positioning holes 111 spaced apart in the vertical direction, the second vertical support member 12 is provided with a plurality of third positioning holes spaced apart in the vertical direction, the first vertical support member 11 is provided with a plurality of second positioning holes 112 spaced apart in the vertical direction, and the second vertical support member 12 is provided with a plurality of fourth positioning holes spaced apart in the vertical direction.

[0049] The second vertical support 12 can be slidably connected to the inside of the first vertical support 11 or to the outside of the first vertical support 11. In this embodiment, the second vertical support 12 is slidably connected to the inside of the first vertical support 11 to reduce space occupation.

[0050] The cover plate 32 covers the top of the protective sleeve 31, preventing rainwater or mud from entering. See details... Figure 1 , Figure 2 and Figure 5 The protective component 3 also includes a gravity block 34, which is fixedly connected to the cover plate 32. The gravity block 34 can pull down the cover plate 32 to press the cover plate 32 against the protective sleeve 31. Due to its own weight, the gravity block 34 can pull down the cover plate 32 to press the cover plate 32 against the protective sleeve 31, thereby improving the sealing performance.

[0051] Specifically, gravity block 34 can be a gravity ball.

[0052] Specifically, the cover plate 32 has an annular groove on the side near the protective sleeve 31, and a sealing ring is provided in the annular groove. The sealing ring can further improve the sealing performance of the cover plate 32 and the protective sleeve 31.

[0053] To facilitate opening the cover plate 32, the protective assembly 3 also includes a traction rope 35. One end of the traction rope 35 is fixedly connected to the end of the cover plate 32 away from the rotating shaft 33, and the other end of the traction rope 35 hangs down naturally around the rotating shaft 33. Pulling the traction rope 35 can open the cover plate 32. At the same time, the fixed connection of one end of the traction rope 35 to the end of the cover plate 32 away from the rotating shaft 33 can increase the lever arm, making it easier for the staff to open the cover plate 32.

[0054] Fastener 41 can be a clamp or an elastic band, for example, see [link to example]. Figure 1 and Figure 6 Fastener 41 is a clamp, and multiple clamps are spaced apart in the vertical direction, which can evenly tighten the protective sleeve 31 in the vertical direction and improve the fixing effect of the protective sleeve 31 to the steel strand.

[0055] The clamp can be secured with fastening bolt 7 to improve the fixing effect.

[0056] The protective sleeve 31 can be fitted onto the outer surface of the first vertical support member 11 and the second vertical support member 12 to protect the steel strand, or it can be disposed inside the first vertical support member 11 and the second vertical support member 12 and directly fitted onto the steel strand. For example, the protective sleeve 31 is directly fitted onto the steel strand, which can save materials and reduce costs.

[0057] The protective sleeve 31 can also be fitted onto the outer surface of the first vertical support member 11 and the second vertical support member 12, which facilitates construction.

[0058] In this embodiment, see Figure 1 The positioning and protection frame for the vertical prestressed steel strands of the pier includes two sets of transverse support components 2, and a ladder 5 is set between the two sets of transverse support components 2. The ladder 5 is inclined. The two sets of transverse support components 2 can save costs. The ladder 5 facilitates the movement of workers between the two frame platforms 22, improves construction efficiency, and the inclined setting of the ladder 5 can improve the stability of the fixation and ensure the safety of workers during the climbing process.

[0059] The transverse support 21 can be a support rod or a support plate. Optionally, the transverse support 21 can be a support rod, which is convenient for construction and can save costs.

[0060] Further, see Figure 1 and Figure 3 The positioning and protection frame for the vertical prestressed steel strands of the pier also includes a flip plate 6. The frame platform 22 of the upper horizontal support 21 has an entrance. The flip plate 6 is rotatably connected to the entrance of the frame platform 22. The flip plate 6 can open or close the entrance. When the flip plate 6 is opened, the construction personnel enter the upper frame platform 22 through the entrance. When the flip plate 6 is closed, the workers can stand on the flip plate 6, which improves the convenience and safety of construction.

[0061] Specifically, the flip plate 6 can be hinged to the jig platform 22 via a hinge seat.

[0062] In other embodiments, the positioning and protection frame for the vertical prestressed steel strands of the pier includes three sets of transverse support components 2, further improving construction convenience.

[0063] The length of the protective sleeve 31 can be determined according to the support height of the second vertical support member 12. Alternatively, a telescopic protective sleeve 31 can be selected. For example, the protective sleeve 31 includes a telescopic part, which is provided with multiple annular peaks and annular troughs at intervals along the vertical direction. The annular peaks and annular troughs are distributed alternately and continuously. When the telescopic part is extended, the distance between two adjacent peaks increases, and when the telescopic part is shortened, the distance between two adjacent peaks decreases. The distance between the annular peaks and annular troughs is adjustable, which can change the length of the protective sleeve 31. This eliminates the need for frequent disassembly of the protective sleeve 31, improving the convenience and efficiency of construction.

[0064] The utility model provides a positioning and protection frame for vertical prestressed steel strands in piers. During use, S1, according to the pier construction stage and the exposed length of the steel strands, adjust the support height of the second vertical support member 12, aligning the first positioning hole 111 and the third positioning hole, and aligning the second positioning hole 112 and the fourth positioning hole, inserting fixing members to secure the first vertical support member 11 and the second vertical support member 12; S2, hoist the positioning and protection frame for vertical prestressed steel strands in the pier to the top of the already bound steel reinforcement cage, and place the protective sleeve 31 on the steel strands; S3, weld or bind the positioning and protection frame for vertical prestressed steel strands in the pier to the main reinforcement of the pier; S4, close the cover plate 32, and the gravity block 34 pulls the cover plate 32 inward to seal the top of the protective sleeve 31; S5, carry out the concrete curing process. During the curing period, the positioning and protection frame for vertical prestressed steel strands in the pier always plays a role in positioning and protection.

[0065] It should be noted that when prestressing is required during concrete curing, it is only necessary to pull the traction rope 35 to open the cover plate 32 and pull the prestressed steel strands inside the first vertical support 11 and the second vertical support 12, which is convenient for construction.

[0066] It should be noted that if the protective sleeve 31 is provided inside the first vertical support member 11 and the second vertical support member 12, during construction, the protective sleeve 31 needs to be first placed on the steel strand, and then the protective sleeve 31 is placed inside the first vertical support member 11 and the second vertical support member 12. C-shaped channel steel can be used to splice the protective sleeve 31. If the protective sleeve 31 is provided outside the first vertical support member 11 and the second vertical support member 12, during construction, the first vertical support member 11 and the second vertical support member 12 need to be first placed on the steel strand, and then the protective sleeve 31 is placed outside the first vertical support member 11 and the second vertical support member 12. Round or square steel pipes can be used to be directly placed on the steel strand.

[0067] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A positioning and protection frame for vertical prestressed steel strands in a pier, characterized in that, include: The vertical support assembly (1) includes a first vertical support member (11) and a second vertical support member (12). A plurality of the first vertical support members (11) are arranged in a rectangular array. Each first vertical support member (11) is slidably connected to a second vertical support member (12). The second vertical support member (12) and the first vertical support member (11) can be fixedly connected to adjust the support height of the second vertical support member (12) in the vertical direction. Steel strands are threaded through the interior of the first vertical support member (11) and the second vertical support member (12). A lateral support assembly (2) is provided, wherein multiple sets of the lateral support assemblies (2) are spaced apart along the vertical direction. The lateral support assembly (2) includes a lateral support member (21) and a jig platform (22). The lateral support member (21) extends along a first direction and multiple lateral support members (21) are spaced apart along a second direction. The two ends of the lateral support member (21) are respectively connected to the first vertical support member (11) and / or the two ends of the lateral support member (21) are respectively connected to the second vertical support member (12). The first direction is perpendicular to the second direction. The jig platform (22) is fixedly connected to the lateral support member (21). The protective component (3) includes a protective sleeve (31), a cover plate (32) and a rotating shaft (33). The protective sleeve (31) is fitted onto the steel strand. The rotating shaft (33) is fixedly connected to the top of the protective sleeve (31). The cover plate (32) is rotatably connected to the rotating shaft (33). The cover plate (32) can cover the top of the protective sleeve (31). The fixing component (4) includes a fixing member and a fastener (41), the fixing member being configured to fix the first vertical support member (11) and the second vertical support member (12), and the fastener (41) being configured to fasten the protective sleeve (31) to the steel strand.

2. The positioning and protection frame for vertical prestressed steel strands in a pier as described in claim 1, characterized in that, The fixing member is a limiting pin. The first vertical support member (11) has a first positioning hole (111) extending along the first direction and a second positioning hole (112) extending along the second direction. The second vertical support member (12) has a third positioning hole extending along the first direction and a fourth positioning hole extending along the second direction. The first positioning hole (111) and the third positioning hole can be aligned in the vertical direction. The second positioning hole (112) and the fourth positioning hole can be aligned in the vertical direction. The limiting pin can be inserted into the first positioning hole (111) and the third positioning hole, and / or the limiting pin can be inserted into the second positioning hole (112) and the fourth positioning hole.

3. The positioning and protection frame for vertical prestressed steel strands in a pier as described in claim 2, characterized in that, The first vertical support member (11) has a first positioning hole (111), the second vertical support member (12) has a plurality of spaced third positioning holes along the vertical direction, the first vertical support member (11) has a second positioning hole (112), and the second vertical support member (12) has a plurality of spaced fourth positioning holes along the vertical direction.

4. The positioning and protection frame for vertical prestressed steel strands in a pier as described in claim 1, characterized in that, The protective component (3) also includes a gravity block (34), which is fixedly connected to the cover plate (32). The gravity block (34) can pull down the cover plate (32) to press the cover plate (32) against the protective sleeve (31).

5. The positioning and protection frame for vertical prestressed steel strands in a pier as described in claim 1, characterized in that, The protective component (3) also includes a traction rope (35), one end of which is fixedly connected to the end of the cover plate (32) away from the rotating shaft (33), and the other end of which hangs down naturally around the rotating shaft (33).

6. The positioning and protection frame for vertical prestressed steel strands in a pier as described in claim 1, characterized in that, The fastener (41) is a clamp, and multiple clamps are spaced apart along the vertical direction.

7. The positioning and protection frame for vertical prestressed steel strands in a pier as described in claim 1, characterized in that, It includes two sets of the lateral support components (2), and a ladder (5) is provided between the two sets of the lateral support components (2), and the ladder (5) is inclined.

8. The positioning and protection frame for vertical prestressed steel strands in a pier as described in claim 7, characterized in that, It also includes a flip plate (6), and the lateral support member (21) above has an entrance on the frame platform (22). The flip plate (6) is rotatably connected to the entrance of the frame platform (22), and the flip plate (6) can open or close the entrance.

9. The positioning and protection frame for vertical prestressed steel strands in a pier body according to any one of claims 1-8, characterized in that, The protective sleeve (31) includes a telescopic part, which is provided with multiple annular peaks and annular troughs at intervals along the vertical direction. The annular peaks and annular troughs are distributed alternately and continuously. When the telescopic part is extended, the distance between two adjacent peaks increases, and when the telescopic part is shortened, the distance between two adjacent peaks decreases.

10. The positioning and protection frame for vertical prestressed steel strands in a pier body according to any one of claims 1-8, characterized in that, The cover plate (32) has an annular groove on the side near the protective sleeve (31), and a sealing ring is provided in the annular groove.

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