Prestressed component construction device based on pre-tensioning method

Abstract

The utility model belongs to the technical field of prestressed construction, and particularly discloses a prestressed member construction device based on a pre-tensioning method, which comprises two opposite pedestals, fixed cross beams are arranged at two ends of the pedestals, movable cross beams are arranged on the outer sides of the two fixed cross beams, and prestressed concrete piles and a plurality of prestressed tendons are arranged between the two pedestals. The prestressed tendons correspondingly penetrate through the fixed beam and the movable beam, and a plurality of limiting components are arranged on the outer side face of the fixed beam. According to the utility model, the inner concave surface of the pressing ring is in contact with the prestressed tendon, so that the prestressed tendon can be conveniently limited and clamped in the vertical downward direction; and meanwhile, the wedge blocks close to each other enable the tops of the inner concave surfaces of the side ring plates to extrude the two sides of the prestressed tendons through the connecting rods, so that the prestressed tendons are further clamped in the horizontal direction, dislocation movement between the prestressed tendons and the ring frames is avoided, and the clamping stability of the clamping parts to the prestressed tendons is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to prestressed construction technical field, especially relates to a prestressed member construction device based on pre-tensioning method. BACKGROUND

[0002] Prestress has the advantage of improving the bearing capacity of the component, reducing the cross-sectional size, reducing the amount of steel, preventing the component from cracking, etc., so it is widely used in bridge, hydraulic, building and other engineering industries. First, the prestressed reinforcement is tensioned at both ends of the length, and then the prestressed concrete pile is poured on the prestressed reinforcement. When the prestressed concrete pile reaches the design strength value, the prestressed reinforcement is cut off. At present, the two ends of the prestressed reinforcement are limited by the fixed parts. When the prestressed reinforcement is tensioned, it will move out of position with the fixed parts, which will cause the tensioning degree of the prestressed reinforcement to not meet the engineering requirements.

[0003] Therefore, it is necessary to provide a prestressed member construction device based on pre-tensioning method to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the utility model provides a prestressed member construction device based on pre-tensioning method to solve the problems in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a prestressed member construction device based on pre-tensioning method, comprising two opposite bases, both ends of the base are provided with fixed beams, both sides of the two fixed beams are provided with movable beams, a prestressed concrete pile and a plurality of prestressed reinforcements are arranged between the two bases, the prestressed reinforcements correspond to the fixed beams and the movable beams, a plurality of limiting parts are arranged on the outer side of the fixed beam, the plurality of limiting parts correspond one-to-one to the plurality of prestressed reinforcements, a hydraulic jack is arranged between the fixed beam and the movable beam, the hydraulic jack is installed on the outer side of the fixed beam, and the output end of the hydraulic jack is connected to the inner side of the movable beam, a plurality of clamping parts are arranged on the outer side of the movable beam, and the plurality of clamping parts correspond one-to-one to the plurality of prestressed reinforcements.

[0006] Further, the limiting part comprises two oppositely arranged half-ring blocks, and the inner concave surface of the half-ring block is attached to the outer side surface of the prestressed reinforcement, the outer side surface of the half-ring block is surrounded by a rotating ring, the inner side surface of the half-ring block is attached to the outer side surface of the fixed beam, and the outer side of the half-ring block is provided with a ring inclined surface, and the surface of the ring inclined surface is provided with a thread, and the rotating ring is screwed onto the outer side of the ring inclined surface of the two half-ring blocks.

[0007] Further, the clamping part comprises a ring frame, the end of the prestressed reinforcement penetrates the center of the ring frame, the inner side surface of the ring frame is provided with a clamping groove on both sides, and the outer side surface of the movable beam is provided with a protruding rod corresponding to the clamping groove.

[0008] Further, the movable crossbeam top is clamped with a sliding frame, the sliding frame inner side bottom is slidably clamped on the movable crossbeam top surface, and the movable crossbeam top surface is provided with a sliding groove corresponding to the sliding frame, the sliding frame outer side is provided with a rack, the ring frame inner side top surface is provided with a side frame, the side frame inner side is provided with a sliding block, the sliding block bottom is provided with a vertical rod, and the sliding block top surface is fixedly provided with a screw rod penetrating through the side frame, the screw rod top end is spirally sleeved with a gear ring, the gear ring is engaged with the rack, and the gear ring top surface and the screw rod top surface are attached to the sliding frame inner side top surface.

[0009] Further, the ring frame center is provided with a through groove corresponding to the prestressed tendon, the vertical rod bottom end is correspondingly inserted into the through groove inner side, the vertical rod bottom end is fixedly provided with a compression ring in the through groove inner side, the vertical rod surface is sleeved with a spring, the spring top end is connected with the sliding block bottom surface, and the spring bottom end is connected with the side frame inner side bottom surface.

[0010] Further, the sliding block two sides are fixedly provided with side plates, and the side frame two side surfaces are provided with side grooves corresponding to the side plates; the up-and-down sliding block drives the side plate to move up and down in the side groove.

[0011] Further, the ring frame is internally provided with two opposite wedge blocks, the wedge block comprises an inclined side and a vertical side, the vertical sides of the two wedge blocks are oppositely arranged, the ring frame inner side is provided with an inner groove corresponding to the wedge block, the two inner side walls of the inner groove are provided with inclined surfaces, the inclined side of the wedge block corresponds to the inclined surface, and the wedge block bottom is connected with a side ring plate through a connecting rod.

[0012] Further, the two wedge blocks are provided with a horizontal rod and a frame ring, the horizontal rod inner side end is correspondingly inserted into the frame ring inner side end, the horizontal rod outer side end is connected with the vertical side of one wedge block, the frame ring outer side end is connected with the vertical side of another wedge block, the horizontal rod surface is sleeved with an elastic member, one end of the elastic member is connected with the frame ring inner side end, and the other end of the elastic member is connected with the vertical side of the wedge block.

[0013] The technical effects and advantages of the present application are as follows:

[0014] 1. The inner concave surface of the compression ring contacts the prestressed tendon, facilitating the limitation and clamping of the prestressed tendon in the vertically downward direction; meanwhile, the wedge blocks close to each other utilize the connecting rod to extrude the prestressed tendon on both sides of the side ring plate top, so as to further clamp the prestressed tendon in the horizontal direction, avoid the dislocation movement between the prestressed tendon and the ring frame, and ensure the clamping stability of the clamping part to the prestressed tendon.

[0015] 2. The utility model discloses a rotating rotating ring, and the spiral cooperation between the rotating ring and the ring inclined surface makes two half ring blocks cooperate to pressurize the prestressed reinforcement until the rotating ring cannot rotate, and the cooperation between the rotating ring and the half ring block preliminarily limits the prestressed reinforcement of different diameters. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the prestressed component overall schematic diagram based on the pre-tensioning method of the utility model embodiment;

[0017] Figure 2 It is the limiting component overall cross section three -dimensional schematic diagram of the utility model embodiment;

[0018] Figure 3 It is the movable crossbeam overall schematic diagram of the utility model embodiment;

[0019] Figure 4 It is the movable crossbeam cross section three -dimensional schematic diagram of the utility model embodiment;

[0020] Figure 5 It is the ring frame cross section three -dimensional schematic diagram of the utility model embodiment;

[0021] Figure 6 It is the Figure 4 A portion structure enlarged view in the of the utility model embodiment;

[0022] Figure 7 It is the Figure 3 B portion structure enlarged view in the of the utility model embodiment;

[0023] Figure 8 It is the relative cooperation schematic diagram of two wedge blocks of the utility model embodiment;

[0024] In the drawing: 1, pedestal;2, fixed crossbeam;3, movable crossbeam;4, prestressed concrete pile;5, prestressed reinforcement;6, hydraulic jack;7, half ring block;8, rotating ring;9, ring inclined surface;10, ring frame;11, clamping groove;12, convex rod;13, sliding frame;14, rack;15, side frame;16, sliding block;17, vertical rod;18, screw;19, gear ring;20, pressing ring;21, spring;22, side plate;23, wedge block;24, inclined surface;25, side ring plate;26, ring groove;27, cross rod;28, frame ring;29, sleeve ring. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the utility model technical scheme will be clearly and completely described below in conjunction with the embodiment.

[0026] The utility model provides a kind of prestressed component construction device based on pre-tensioning method, such as Figure 1As shown, including two opposite pedestals 1, both ends of pedestal 1 are provided with fixed beam 2, both sides of two fixed beam 2 are provided with movable beam 3, between two pedestals 1 is provided with prestressed concrete pile 4 and a plurality of prestressed tendon 5, prestressed tendon 5 corresponds to the through fixed beam 2 and movable beam 3, the outer side of the fixed beam 2 is provided with a plurality of limiting components, a plurality of limiting components correspond to a plurality of prestressed tendon 5, the fixed beam 2 and movable beam 3 between is provided with hydraulic jack 6, hydraulic jack 6 is installed on the outer side of the fixed beam 2, and the output end of the hydraulic jack 6 is connected with the inner side of the movable beam 3, the outer side of the movable beam 3 is provided with a plurality of clamping components, a plurality of clamping components correspond to a plurality of prestressed tendon 5. After a plurality of prestressed tendon 5 corresponding to the through movable beam 3 and fixed beam 2, the preliminary limitation of prestressed tendon 5 is carried out by using the limiting component, the movement of the prestressed tendon 5 between the two pedestals 1 is avoided, the end of the prestressed tendon 5 is limited on the movable beam 3 by the clamping component, at this time the inner side of the clamping component is attached to the outer side of the movable beam 3, and the limitation of the prestressed tendon 5 is completed.

[0027] In Figure 1 and Figure 2 , the limiting component includes two oppositely arranged half ring blocks 7, and the inner concave surface of the half ring block 7 is attached to the circumferential outer side surface of the prestressed tendon 5, the circumferential outer side surface of the half ring block 7 is surrounded by a rotating ring 8, the inner side surface of the half ring block 7 is attached to the outer side surface of the fixed beam 2, the outer side of the half ring block 7 is provided with a ring inclined surface 9, and the surface of the ring inclined surface 9 is provided with a thread, and the rotating ring 8 is screw connected to the outer side of the ring inclined surface 9 of the two half ring blocks 7. After the prestressed tendon 5 is inserted, the two half ring blocks 7 are buckled on the surface of the prestressed tendon 5, at this time the inner side surface of the half ring block 7 is attached to the outer side surface of the fixed beam 2, the rotating ring 8 is correspondingly sleeved on the outer side of the two half ring blocks 7, the rotating ring 8 is rotated, and the screw cooperation between the rotating ring 8 and the ring inclined surface 9 makes the two half ring blocks 7 cooperate to press the prestressed tendon 5, until the rotating ring 8 cannot be rotated, the preliminary limitation of the prestressed tendon 5 is completed by using the cooperation between the rotating ring 8 and the half ring block 7.

[0028] In Figures 3 to 5 , the clamping component includes a ring frame 10, the end of the prestressed tendon 5 penetrates the center of the ring frame 10, the inner side surface of the ring frame 10 is provided with a clamping groove 11 on both sides, and the outer side surface of the movable beam 3 is provided with a protruding rod 12 corresponding to the clamping groove 11. The ring frame 10 is close to the movable beam 3, the ring frame 10 is buckled on the surface of the protruding rod 12 by cooperating with the clamping groove 11, at this time the inner side surface of the ring frame 10 is attached to the outer side surface of the movable beam 3, at this time the ring frame 10 is vertically arranged, the center of the ring frame 10 is provided with a through groove corresponding to the prestressed tendon 5, until the prestressed tendon 5 penetrates the center of the ring frame 10 through the through groove.

[0029] In Figures 3 to 7In, the movable crossbeam 3 top clamping has the sliding frame 13, the sliding frame 13 inside bottom sliding clamping in movable crossbeam 3 top surface, and movable crossbeam 3 top surface is provided with the sliding slot corresponding with sliding frame 13, the sliding frame 13 outside is provided with rack 14, the ring frame 10 inside top surface is provided with side frame 15, the side frame 15 inside is provided with sliding block 16, sliding block 16 bottom is provided with vertical rod 17, and sliding block 16 top surface is fixed with screw rod 18, the screw rod 18 top end screw sleeve is connected with gear ring 19, the gear ring 19 is engaged with rack 14, and the top surface of gear ring 19 and the top surface of screw rod 18 are all with the inside top surface of sliding frame 13. Push sliding frame 13 moves, because movable crossbeam 3 is limited sliding frame 13 through sliding slot, sliding frame 13 is stable at this time in movable crossbeam 3 top, because sliding frame 13 is clamped with rack 14 bottom rod gear ring 19, and convex rod 12 cooperates and limits ring frame 10, sliding sliding frame 13 through rack 14 drives gear ring 19 to rotate on the surface of screw rod 18, and avoids the deviation of ring frame 10. Because sliding frame 13 limits gear ring 19, the screw cooperation of rotating gear ring 19 and screw rod 18 makes screw rod 18 drive sliding block 16 to move downward in the inside of side frame 15, and the synchronous downward movement of the downward movement of sliding block 16 drives vertical rod 17, at this time, the top end of screw rod 18 gradually moves away from the inside top surface of sliding frame 13.

[0030] Push sliding frame 13 reversely moves, and the reverse rotation of sliding sliding frame 13 through rack 14 drives gear ring 19 to rotate on the surface of screw rod 18, and the screw cooperation of reversely rotating gear ring 19 and screw rod 18 makes screw rod 18 drive sliding block 16 to move upward in the inside of side frame 15, and the synchronous upward movement of the upward movement of sliding block 16 drives vertical rod 17, at this time, the top end of screw rod 18 gradually approaches the inside top surface of sliding frame 13.

[0031] In Figure 3 and Figure 5 , the vertical rod 17 bottom end corresponds and inserts in the inside of through groove, the vertical rod 17 bottom end is fixed with compression ring 20, the compression ring 20 is in the inside of through groove, the vertical rod 17 surface is sleeved with spring 21, the spring 21 top end is connected with the bottom surface of sliding block 16, and the spring 21 bottom end is connected with the inside bottom surface of side frame 15. When the downward movement of sliding block 16 is driven by rotating gear ring 19, sliding block 16 drives compression ring 20 to move downward in the inside of through groove by vertical rod 17, and sliding block 16 and side frame 15 extrude spring 21, until the inner concave surface of compression ring 20 contacts prestressed tendon 5, conveniently limit and hold prestressed tendon 5 in the direction of vertical downward.

[0032] In Figure 6 and Figure 7In the middle, the slider 16 is fixed with side plates 22 on both sides, the side frame 15 is provided with side slots corresponding to the side plates 22 on both sides, and the up-down moving slider 16 drives the side plates 22 to move up and down in the side slots. When the slider 16 moves up and down, the up-down moving slider 16 drives the side plates 22 to move up and down in the side slots, and the side plates 22 cooperate to limit the slider 16, avoiding the rotation of the slider 16 at the center of the side frame 15, so that the vertical rod 17 is always in a vertical state.

[0033] In Figure 3 、 Figure 5 and Figure 8 , the ring frame 10 is provided with two opposite wedge blocks 23 inside, the wedge block 23 includes an inclined side and a vertical side, the vertical sides of the two wedge blocks 23 are oppositely arranged, the inside of the ring frame 10 is provided with an inner slot corresponding to the wedge block 23, the two inner side walls of the inner slot are provided with inclined surfaces 24, the inclined side of the wedge block 23 corresponds to the inclined surface 24, the bottom of the wedge block 23 is connected with a side ring plate 25 by a connecting rod, the bottom end of the connecting rod is correspondingly inserted into the through slot, the inside of the through slot is provided with a ring groove 26 corresponding to the side ring plate 25, and the connecting rod is provided as a spring piece. The two wedge blocks 23 are provided with a cross rod 27 and a ring frame 28, the inside end of the cross rod 27 is correspondingly inserted into the inside end of the ring frame 28, the outside end of the cross rod 27 is connected with the vertical side of one wedge block 23, the outside end of the ring frame 28 is connected with the vertical side of the other wedge block 23, the surface of the cross rod 27 is sleeved with an elastic member, one end of the elastic member is connected with the inside end of the ring frame 28, and the other end of the elastic member is connected with the vertical side of the wedge block 23. The surface of the vertical rod 17 is fixedly provided with a sleeve ring 29 sleeved on the outside of the ring frame 28. When the vertical rod 17 moves downward, the downward moving vertical rod 17 drives the ring frame 28 to move downward synchronously by the sleeve ring 29, at this time, the ring frame 28 drives the cross rod 27 to move downward synchronously, and the ring frame 28 and the cross rod 27 drive the two wedge blocks 23 to move downward synchronously, at this time, the wedge block 23 moves downward on the surface of the inclined surface 24 of the inner slot by the inclined side, the elastic force of the elastic member makes the inclined side of the wedge block 23 fit the inclined surface 24, under the limitation of the inclined surface 24, the two wedge blocks 23 moving downward synchronously move close to each other, the two wedge blocks 23 moving close to each other extrude the elastic member by the ring frame 28, and the downward moving wedge block 23 drives the side ring plate 25 to move downward synchronously by the connecting rod, since the connecting rod is provided as a spring piece, the side ring plate 25 slides in the inside of the ring groove 26 by the connecting rod of the downward moving wedge block 23, until the bottom ends of the two side ring plates 25 contact, the side ring plate 25 is extruded by the inside concave top of the side ring plate 25 by the connecting rod of the wedge block 23 moving close to each other, so that the prestressed steel bar 5 is further clamped in the horizontal direction, avoiding the dislocation movement between the prestressed steel bar 5 and the ring frame 10.

[0034] The working principle of the utility model:

[0035] Refer to Figures 1 to 8As shown, the ring frame 10 is close to the movable cross beam 3, and the ring frame 10 is matched with the sleeve on the surface of the convex rod 12 by the clamping groove 11. At this time, the inner side of the ring frame 10 is attached to the outer side of the movable cross beam 3, and the ring frame 10 is vertically arranged. After the prestressed tendon 5 is inserted, until the prestressed tendon 5 penetrates the center of the ring frame 10 through the through slot, the two half ring blocks 7 are buckled on the surface of the prestressed tendon 5, and at this time, the inner side of the half ring block 7 is attached to the outer side of the fixed cross beam 2. The rotary ring 8 is correspondingly sleeved on the outer side of the two half ring blocks 7, the rotary ring 8 is rotated, and the spiral cooperation between the rotary ring 8 and the ring inclined surface 9 makes the two half ring blocks 7 cooperate to pressurize the prestressed tendon 5, until the rotary ring 8 cannot be rotated, and the preliminary limitation of the prestressed tendon 5 is completed by the cooperation between the rotary ring 8 and the half ring block 7.

[0036] The slide 13 is pushed to move, and since the movable cross beam 3 limits the slide 13 through the sliding groove, at this time, the slide 13 slides stably on the top of the movable cross beam 3. Since the slide 13 is clamped with the tooth ring 19 of the bottom rod by the rack 14, and the convex rod 12 cooperates to limit the ring frame 10, the sliding slide 13 drives the tooth ring 19 to rotate on the surface of the screw rod 18 through the rack 14, so as to avoid the deviation of the ring frame 10. Since the slide 13 limits the tooth ring 19, the spiral cooperation between the rotating tooth ring 19 and the screw rod 18 makes the screw rod 18 drive the sliding block 16 to move downward in the inner side of the side frame 15, and the downward moving sliding block 16 drives the vertical rod 17 to move downward synchronously, at this time, the top end of the screw rod 18 gradually moves away from the inner top surface of the slide 13.

[0037] When the tooth ring 19 rotates and the sliding block 16 moves downward, the sliding block 16 drives the pressing ring 20 to move downward in the through slot by the vertical rod 17, and the sliding block 16 extrudes the spring 21 by cooperating with the side frame 15, until the inner concave surface of the pressing ring 20 contacts the prestressed tendon 5, which facilitates the limitation and clamping of the prestressed tendon 5 in the vertically downward direction.

[0038] When the vertical rod 17 moves downward, the downward moving vertical rod 17 drives the frame ring 28 to move downward synchronously by the sleeve ring 29, at this time, the frame ring 28 drives the horizontal rod 27 to move downward synchronously, and the frame ring 28 and the horizontal rod 27 drive the two wedge blocks 23 to move downward synchronously, at this time, the inclined side surface of the wedge block 23 moves on the surface of the inclined surface 24 of the inner groove by the inclined side surface, and the elastic force of the elastic member makes the inclined side surface of the wedge block 23 attached to the inclined surface 24. Under the limitation of the inclined surface 24, the two wedge blocks 23 move downward synchronously and move close to each other, the two wedge blocks 23 extrude the elastic member by the frame ring 28 when they move close to each other, and the wedge block 23 drives the side ring plate 25 to move downward synchronously by the connecting rod when it moves downward, since the connecting rod is arranged as an elastic piece, the downward moving wedge block 23 makes the side ring plate 25 slide in the inner side of the ring groove 26 through the connecting rod, until the bottom ends of the two side ring plates 25 contact, the wedge blocks 23 make the inner concave surface of the side ring plate 25 extrude the prestressed tendon 5 on both sides by the connecting rod when they move close to each other, so as to further clamp the prestressed tendon 5 in the horizontal direction, and avoid the misplacement between the prestressed tendon 5 and the ring frame 10.

[0039] The preliminary limitation of the prestressed tendon 5 is carried out by the limiting component, the movement of the prestressed tendon 5 between the two pedestals 1 is avoided, the end of the prestressed tendon 5 is limited on the movable cross beam 3 by the clamping component, at this time, the inner side of the clamping component is attached to the outer side of the movable cross beam 3, and the limitation of the prestressed tendon 5 is completed. The hydraulic jack 6 works, the output end of the hydraulic jack 6 pushes the movable cross beam 3 to move, and the movable cross beam 3 moves to tension the prestressed tendon 5 by the clamping component.

[0040] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them.

Claims

1. A prestressed member construction device based on the pre-tensioning method, comprising two opposite pedestals (1), both ends of the pedestal (1) are provided with a fixed cross beam (2), characterized in that: Two fixed beams (2) outside are provided with movable beams (3), prestressed concrete piles (4) and a plurality of prestressed tendons (5) are arranged between the two pedestals (1), the prestressed tendons (5) correspond to the fixed beam (2) and the movable beam (3), the outer side of the fixed beam (2) is provided with a plurality of limiting parts, the plurality of limiting parts correspond one-to-one with the plurality of prestressed tendons (5), the hydraulic jack (6) is arranged between the fixed beam (2) and the movable beam (3), the hydraulic jack (6) is installed on the outer side of the fixed beam (2), and the output end of the hydraulic jack (6) is connected with the inner side of the movable beam (3), the outer side of the movable beam (3) is provided with a plurality of clamping parts, and the plurality of clamping parts correspond one-to-one with the plurality of prestressed tendons (5).

2. The prestressed component construction device based on the pre-tensioning method according to claim 1, characterized in that: The limiting part comprises two oppositely arranged half-ring blocks (7), and the inner concave surface of the half-ring block (7) is attached to the circumferential outer side surface of the prestressed tendon (5), the circumferential outer side surface of the half-ring block (7) is surrounded by a rotating ring (8), the inner side surface of the half-ring block (7) is attached to the outer side surface of the fixed beam (2), the outer side of the half-ring block (7) is provided with a ring inclined surface (9), and the surface of the ring inclined surface (9) is provided with a thread, and the rotating ring (8) is screwed onto the outer side of the ring inclined surface (9) of the two half-ring blocks (7).

3. The prestressed component construction device based on the pre-tensioning method according to claim 1, characterized in that: The clamping part comprises a ring frame (10), the end of the prestressed tendon (5) penetrates the center of the ring frame (10), the inner side surface of the ring frame (10) is provided with a clamping groove (11) on both sides, and the outer side surface of the movable beam (3) is provided with a protruding rod (12) corresponding to the clamping groove (11).

4. The prestressed component construction device based on the pre-tensioning method according to claim 3, characterized in that: The movable beam (3) is clamped with a sliding frame (13) at the top, the inner side of the sliding frame (13) is clamped at the top surface of the movable beam (3), and the top surface of the movable beam (3) is provided with a sliding groove corresponding to the sliding frame (13), the outer side of the sliding frame (13) is provided with a rack (14), the inner side of the ring frame (10) is provided with a side frame (15), the inner side of the side frame (15) is provided with a sliding block (16), the bottom of the sliding block (16) is provided with a vertical rod (17), and the top surface of the sliding block (16) is fixed with a screw rod (18) penetrating the side frame (15), the top end of the screw rod (18) is screwed with a gear ring (19), the gear ring (19) is engaged with the rack (14), and the top surface of the gear ring (19) and the top surface of the screw rod (18) are attached to the inner top surface of the sliding frame (13).

5. The prestressed component construction device based on the pre-tensioning method according to claim 4, characterized in that: The ring frame (10) is provided with a through slot corresponding to the prestressed tendon (5) at the center, the vertical rod (17) is correspondingly inserted into the inside of the through slot at the bottom end, the vertical rod (17) is fixed with a compression ring (20) at the bottom end, the compression ring (20) is inside the through slot, the vertical rod (17) is sleeved with a spring (21) on the surface, the spring (21) is connected to the bottom surface of the sliding block (16) at the top end, and the spring (21) is connected to the inside bottom surface of the side frame (15) at the bottom end.

6. The pre-stressed member construction device based on the pretensioning method according to claim 5, characterized in that: The sliding block (16) is fixed with a side plate (22) on both sides, the side frame (15) is provided with a side groove corresponding to the side plate (22) on both side surfaces, and the sliding block (16) moving up and down drives the side plate (22) to move up and down inside the side groove.

7. The pre-stressed member construction device based on the pretensioning method according to claim 5, characterized in that: The ring frame (10) is provided with two opposite wedge blocks (23) inside, the wedge block (23) comprises an inclined side and a vertical side, the vertical sides of the two wedge blocks (23) are oppositely arranged, the ring frame (10) is provided with an inner groove corresponding to the wedge block (23) inside, the inner groove is provided with a slope (24) on both inner side walls, the inclined side of the wedge block (23) corresponds to the slope (24), the wedge block (23) is connected with a side ring plate (25) at the bottom through a connecting rod, the connecting rod is correspondingly inserted into the inside of the through slot at the bottom end, the through slot is provided with a ring groove (26) corresponding to the side ring plate (25) inside, and the connecting rod is provided as an elastic sheet.

8. The pre-stressed member construction device based on the pretensioning method according to claim 7, characterized in that: The two wedge blocks (23) are provided with a cross rod (27) and a ring frame (28) therebetween, the cross rod (27) is correspondingly inserted into the inside of the ring frame (28) at the inside end, the cross rod (27) is connected to the vertical side of one wedge block (23) at the outside end, the ring frame (28) is connected to the vertical side of the other wedge block (23) at the outside end, the cross rod (27) is sleeved with an elastic member on the surface, one end of the elastic member is connected to the inside end of the ring frame (28), the other end of the elastic member is connected to the vertical side of the wedge block (23), and the vertical rod (17) is fixed with a sleeve ring (29) sleeved outside the ring frame (28) on the surface.

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