PC multi-strand steel wire threading guide device

Abstract

The application provides a PC multi-strand steel wire threading guide device, a sliding groove is formed in the lower end of an inclined plate, grooves are formed on the two sides of the sliding groove, the inclined plate is inclined downward by 45 degrees, the inclined direction of the inclined plate is opposite to the inclined direction of the sliding plate, a rotating shaft is inclined and swings inside the sliding groove, a protruding block swings synchronously, the swinging angle is 5-45 degrees, the protruding block is inclined and slides inside the groove of the inclined plate, the sliding frame can use its own downward sliding inertia and the extrusion of the sliding plate, the sliding frame drives the rollers to form downward extrusion limiting on the upper end of the steel wire, so that the threading guide device can form bidirectional clamping limiting on the upper and lower ends of the PC multi-strand steel wire according to the diameter of the PC multi-strand steel wire during the guiding process, and the displacement of the PC multi-strand steel wire during the guiding process is avoided.

Description

Technical Field

[0001] This invention relates to the technical fields of scaffolding, formwork, templates, construction tools or other building auxiliary equipment, and in particular to a PC multi-strand steel strand threading guide device. Background Technology

[0002] PC multi-strand steel strand is typically made by twisting multiple steel wires together. It can be used to reinforce and enhance the load-bearing capacity of concrete structures. The wire-threading guide device is the main tool for threading steel strands into ducts during the construction of bridges and large buildings using prestressed processes. The PC multi-strand steel strand is bundled and hoisted to the end of the precast beam, about 10m away from the precast beam, and fixed with a steel strand cage. The wire-threading guide device is then installed, and one end of the PC multi-strand steel strand is passed through the wire-threading guide device. The wire-threading guide device is then turned on. When the PC multi-strand steel strand has passed through the inside of the wire-threading guide device to the other end of the beam, and the required exposed length of the PC multi-strand steel strand has been reached, the power to the wire-threading guide device is turned off. This provides technical inspiration for the wire-threading guide device. The study of thread-guiding devices revealed the following problems: Because the diameter of the PC multi-strand steel strand needs to be adjusted according to the requirements of the bridge, and the guiding device for the wire threading is fixed, the diameter of the PC multi-strand steel strand may not be compatible with the internal guiding mechanism of the wire threading device when guiding the PC multi-strand steel strand. This can lead to the PC multi-strand steel strand shifting during the wire threading process, so manual adjustment of the PC multi-strand steel strand is required multiple times. Currently, CN201610038378.X discloses a prestressed concrete steel strand threading guide device. This invention provides a threading guide device where the positional relationship between the guide sleeve and the guide tube satisfies the following: when the steel strand end passes through the guide sleeve and moves into the guide tube, it can be suspended and fall into the guide tube. The guide sleeve guides the steel strand passed through by the threading machine, enabling the steel strand to automatically enter the pre-embedded threading tube, thus improving threading efficiency. Furthermore, the gap between the guide tube and the guide sleeve is used for shearing the steel strand, and the steel strand inside the guide tube serves as a reserved section for anchoring, eliminating the need to measure the length of the reserved steel strand during cutting. This invention primarily addresses the problem of displacement that easily occurs during the threading and guiding of PC multi-strand steel strands. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a PC multi-strand steel strand threading guide device to solve the problems described in the background section.

[0004] The purpose and effect of the present invention, a PC multi-strand steel strand threading guide device, are achieved by the following specific technical means: A PC multi-strand steel strand threading guide device includes a housing, a motor is provided on one side of the housing, a gear is rotatably connected to one end of the motor near the housing, a belt is rotatably fitted on the outside of the gear, and a driven gear is rotatably connected to the side of the belt away from the gear.

[0005] Furthermore, the housing has holes on both sides, and steel strands pass through the inside of the holes. The output shaft of the motor is rotatably embedded inside the housing, and the motor is connected to the power circuit via a power cable.

[0006] Furthermore, the gear and driven gear rotate inside the housing, and both the gear and driven gear are located below the holes on both sides of the housing. The gear drives the driven gear to rotate via a belt.

[0007] Furthermore, grooves are provided on the edges of both the driven gear and the gear, and limiting mechanisms are provided on both sides inside the grooves. The lower end of the steel strand slides and fits against the upper end of the gear and the driven gear.

[0008] Furthermore, the limiting mechanism includes a slider, a connecting rod, a deformable ring, a connecting rope, and a weight. The slider slides on both sides of the grooves of the gear and the driven gear. The connecting rod is located at one end of the slider. The deformable ring is embedded in the end of the connecting rod away from the slider. The connecting rope is embedded in both sides inside the deformable ring. The weight is suspended at the connecting end of the connecting rope.

[0009] Furthermore, the slider slides and extends to the outside of the groove, with two sliders forming a group, and each group of sliders is matched with the groove. The side of the slider slides horizontally against the steel strand.

[0010] Furthermore, the connecting rod, deformable ring, connecting rope, and weight are all located inside the grooves of the gear and driven gear. The connecting rod is arranged in an arc shape, with the end of the connecting rod away from the slider distributed on both sides of the upper end of the deformable ring.

[0011] Furthermore, the deformable ring is semi-circular with an angle of 180°, the connecting rope is located inside the upper end of the deformable ring, and the deformable ring is made of a deformable material, such as rubber.

[0012] Furthermore, the connecting rope is located on both sides of the weight, and the connecting rope and the weight are arranged in a triangular pattern. The lower end of the weight is conical, and the overall weight of the weight is 100-200g.

[0013] Furthermore, a top plate is installed on the upper end of the inner wall of the housing, a sliding frame is slidably nested at the lower end of the top plate, and a roller is rotatably mounted at the lower end of the sliding frame.

[0014] Furthermore, the lower end of the top plate is provided with a groove, and the sliding frame is slidably nested inside the groove. The sliding frame and the top plate extend laterally through the interior of the shell, and the sliding frame is shaped like a "T" on the side.

[0015] Furthermore, the rollers are arranged horizontally, with 5-7 rollers in total. The lower end of the rollers is horizontally rotated and attached to the upper end of the steel strand, and the rollers slide vertically at the lower end of the sliding frame.

[0016] Furthermore, the top plate has an inclined plate inside, a rotating shaft slides on the inner side of the lower end of the inclined plate, protrusions are provided on both sides of the rotating shaft, and a sliding plate swings at the lower end of the rotating shaft.

[0017] Furthermore, the slide plate is tilted at 15-65°, and a track is provided at the upper end of the sliding frame. The lower end of the slide plate slides inside the track. When the sliding frame is not moving upward, the upper end of the slide plate is on one side of the lower end of the inclined plate.

[0018] Furthermore, a groove is provided at the lower end of the inclined plate, and grooves are provided on both sides of the groove. The inclined plate is tilted downward at 45°, and the tilting direction of the inclined plate is opposite to the tilting direction of the sliding plate.

[0019] Furthermore, the rotating shaft swings at an angle inside the groove, while the protrusion swings synchronously at an angle of 5-45°, and the protrusion slides at an angle inside the groove of the inclined plate.

[0020] Beneficial effects: 1. The steel strand is located at the upper end of the gear. The rotation of the gear drives the steel strand to move. When the slider is located at the upper end of the gear and the driven gear, the side of the slider can slide horizontally with the steel strand. With the compression of the steel strand, the slider slides on both sides at the upper end of the gear and the driven gear. The connecting rod at the lower end of the slider slides synchronously. Therefore, the distance between the connecting rods on both sides of the deformed ring increases. With the deformed ring in a semi-circular arc shape and the semi-circular arc angle being 180°, the deformed ring as a whole extends and deforms horizontally. 2. When the deforming ring deforms, the connecting rope on the inner side of the upper end of the deforming ring moves upward synchronously, while the weight moves upward at the lower end of the connecting rope. Using the downward weight of the weight, the weight can return to its original position. Therefore, the weight can drive the deforming ring back to its original position through the connecting rope. At this time, the distance between the connecting rod and the slider on both sides of the upper end of the deforming ring is shortened, and the slider can form a reverse limiting squeeze on the steel strand. This allows the gear and driven gear to avoid the steel strand from shifting at the upper end of the gear and driven gear during the process of guiding the steel strand. 3. When the steel strand passes through the interior of the shell, the upper end of the steel strand is attached to the upper end of the roller, and the lower end of the roller is squeezed upward. The roller can slide upward at the lower end of the top plate through the sliding frame, while the lower end of the roller and the upper end of the steel strand are horizontally rotated and attached. The roller can form a contact limit on the upper end of the steel strand, so that the sliding frame and gear can form a bidirectional squeezing limit on the steel strand. 4. When the sliding frame slides upward due to the upward pressure of the steel strand on the lower end of the top plate, the sliding frame is pressed upward to the lower end of the slide plate. When the sliding frame is not moving upward, the upper end of the slide plate is on one side of the lower end of the ramp. The upper end of the slide plate slides upward through the pivot at the lower end of the ramp, while the lower end of the slide plate slides horizontally inside the track of the sliding frame. The slide plate as a whole tilts and swings. 5. Since the top of the skateboard slides upwards, the skateboard uses the sliding inertia of the pivot and its own weight to make the pivot slide from top to bottom at the bottom of the ramp, and the skateboard slides downwards simultaneously. Since the bottom of the skateboard is located on one side of the track inside the slide frame, the bottom of the skateboard slides inside the track. When the bottom of the skateboard slides to the side of the track, the bottom of the skateboard can no longer slide. 6. At this time, the slide plate can press down to the lower end of the sliding frame. Therefore, the sliding frame can use its own downward sliding inertia and the pressing of the slide plate to drive the roller to form a downward pressing limit on the upper end of the steel strand. This allows the wire guiding device to form a bidirectional clamping limit on the upper and lower ends of the PC multi-strand steel strand according to the diameter of the PC multi-strand steel strand during the guiding process, thus preventing the PC multi-strand steel strand from shifting during the guiding process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention.

[0023] Figure 3 This is a schematic diagram of the gear assembly structure of the present invention.

[0024] Figure 4 This is a schematic diagram of the slider assembly structure of the present invention.

[0025] Figure 5 For the present invention Figure 4 A schematic diagram of the sliding of the middle slider.

[0026] Figure 6 This is a schematic diagram of the top plate assembly structure of the present invention.

[0027] Figure 7 For the present invention Figure 6 A schematic diagram of the structure viewed from below.

[0028] Figure 8 This is a schematic diagram of the skateboard assembly structure of the present invention.

[0029] Figure 1-8 In the diagram, the correspondence between component names and drawing numbers is as follows: 1-Housing, 101-Motor, 102-Gear, 103-Belt, 104-Driven Gear, 2-Slider, 201-Connecting Rod, 202-Deformation Ring, 203-Connecting Rope, 204-Weight, 3-Top Plate, 301-Sliding Frame, 302-Roller, 4-Slide Plate, 401-Rotating Shaft, 402-Protrusion, 403-Slope Plate. Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Example

[0031] As attached Figure 1 To be continued Figure 8 As shown: Example 1: A PC multi-strand steel strand threading guide device includes a housing 1. A motor 101 is provided on one side of the housing 1. A gear 102 is rotatably connected to one end of the motor 101 near the housing 1. A belt 103 is rotatably mounted on the outside of the gear 102. A driven gear 104 is rotatably mounted on the side of the belt 103 away from the gear 102. Wherein: housing 1, with holes through both sides of housing 1, steel strands passing through the inside of the holes, the output shaft of motor 101 is rotatably embedded inside housing 1, and motor 101 is connected to the power circuit through a power line; Gear 102 and driven gear 104 rotate inside housing 1. Gear 102 and driven gear 104 are both located below the holes on both sides of housing 1. Gear 102 drives driven gear 104 to rotate via belt 103. Both gear 102 and driven gear 104 are located below the holes on both sides of housing 1, as shown in the attached instruction manual. Figure 2 As shown; Driven gear 104 and gear 102 both have grooves on their edges. Limiting mechanisms are provided on both sides inside the grooves. The lower end of the steel strand slides and fits against the upper end of gear 102 and driven gear 104. In this process: PC multi-strand steel strands are bundled and suspended to the end of the precast beam. Holes are penetrating both sides of the shell 1. The PC multi-strand steel strands extend into the interior of the shell 1 through the holes. The motor 101 drives the gear 102 to rotate. The gear 102 drives the driven gear 104 to rotate through the belt 103. The lower end of the steel strand slides against the upper end of the gear 102 and the driven gear 104. Therefore, the rotation of the gear 102 and the driven gear 104 can guide the PC multi-strand steel strands through the shell 1 to the other end of the beam, completing the wire guiding process. Example 2: Refer to the attached instruction manual Figure 1-5 It can be seen that the difference between Embodiment 2 and Embodiment 1 is that the limiting mechanism includes a slider 2, a connecting rod 201, a deformable ring 202, a connecting rope 203 and a weight 204. The slider 2 slides on both sides of the groove of the gear 102 and the driven gear 104. The connecting rod 201 is located at one end of the slider 2. The deformable ring 202 is embedded in the end of the connecting rod 201 away from the slider 2. The connecting rope 203 is embedded in both sides inside the deformable ring 202. The weight 204 is suspended at the connecting end of the connecting rope 203. Among them: slider 2, slider 2 slides and extends to the outside of the groove, slider 2 is in a group of two, each group of slider 2 is matched with the groove, and the side of slider 2 is horizontally squeezed and slid with the steel strand. The lower end of the steel strand slides against the upper end of the gear 102 and the driven gear 104, and when the slider 2 is at the upper end of the gear 102 and the driven gear 104, the side of the slider 2 can slide horizontally against the steel strand. The connecting rod 201, the deformable ring 202, the connecting rope 203 and the weight 204 are all located inside the grooves of the gear 102 and the driven gear 104. The connecting rod 201 is arranged in an arc shape, and the end of the connecting rod 201 away from the slider 2 is distributed on both sides of the upper end of the deformable ring 202. When slider 2 is at the upper end of gear 102 and driven gear 104, the end of connecting rod 201 away from slider 2 is distributed on both sides of the upper end of deformation ring 202. (Refer to the instruction manual appendix.) Figure 4 As shown; Deformable ring 202 is semi-circular in shape with a semi-circular angle of 180°. Connecting rope 203 is located on the inner side of the upper end of deformable ring 202. Deformable ring 202 is made of deformable material, such as rubber. The deformable ring 202 is semi-circular with an angle of 180°. Therefore, when the connecting rod 201 is stretched to both sides of the upper end of the deformable ring 202, the deformable ring 202 extends and deforms horizontally as a whole. Please refer to the instruction manual appendix. Figure 5 As shown; The connecting rope 203 and the weight 204 are located on both sides of the weight 204. The connecting rope 203 and the weight 204 are arranged in a triangular shape. The lower end of the weight 204 is conical. The weight 204 has a total weight of 100-200g. The connecting rope 203 is made of nylon, which makes it easy for the weight 204 to be suspended from one end of the connecting rope 203; When the deformable ring 202 is not deformed, the connecting rope 203 and the weight 204 are arranged in a triangular pattern, as shown in the instruction manual. Figure 4 As shown; Wherein: the steel strand is located at the upper end of gear 102. The rotation of gear 102 drives the steel strand to move. When slider 2 is located at the upper end of gear 102 and driven gear 104, the side of slider 2 can slide horizontally against the steel strand. Utilizing the compression of the steel strand, slider 2 slides on both sides at the upper end of gear 102 and driven gear 104. The connecting rod 201 at the lower end of slider 2 slides synchronously. Therefore, the distance between the connecting rods 201 on both sides of the deformable ring 202 increases. Utilizing the semi-circular arc shape of the deformable ring 202 with a semi-circular arc angle of 180°, the deformable ring 202 extends and deforms horizontally as a whole. Please refer to the attached instruction manual. Figure 5 As shown; When the deformable ring 202 deforms, the connecting rope 203 on the inner side of the upper end of the deformable ring 202 moves upward synchronously, while the weight 204 moves upward at the lower end of the connecting rope 203. Using the downward weight of the weight 204, the weight 204 can return to its original position. Therefore, the weight 204 can drive the deformable ring 202 back to its original position through the connecting rope 203. At this time, the distance between the connecting rod 201 and the slider 2 on both sides of the upper end of the deformable ring 202 is shortened, and the slider 2 can form a reverse limiting squeeze on the steel strand. This allows the gear 102 and the driven gear 104 to avoid the steel strand from shifting at the upper end of the gear 102 and the driven gear 104 during the process of guiding the steel strand. Example 3: Refer to the appendix of the instruction manual Figure 2 , 6 As can be seen from 7, the difference between Embodiment 3 and Embodiments 1 and 2 is that a top plate 3 is installed on the upper end of the inner wall of the shell 1, a sliding frame 301 is slidably nested on the lower end of the top plate 3, and a roller 302 is rotatably mounted on the lower end of the sliding frame 301. Among them: top plate 3 and sliding frame 301, the lower end of top plate 3 is provided with a groove, sliding frame 301 is slidably nested in the groove, sliding frame 301 and top plate 3 are transversely penetrating the interior of shell 1, and sliding frame 301 is in the shape of a "T" on the side. The sliding frame 301 and the top plate 3 are transversely inserted into the interior of the housing 1. The sliding frame 301 is perpendicularly corresponding to the gear 102 and the driven gear 104. The sliding frame 301 and the gear 102 can form a bidirectional compression limit on the steel strand. The sliding frame 301 is T-shaped on the side. The shape of the sliding frame 301 allows it to slide vertically at the lower end of the top plate 3. Rollers 302 are arranged horizontally, and there are 5-7 rollers 302. The lower end of the rollers 302 is horizontally rotated and attached to the upper end of the steel strand, and the rollers 302 slide vertically on the lower end of the sliding frame 301. Wherein: when the steel strand passes through the interior of the housing 1, the upper end of the steel strand is attached to the upper end of the roller 302, and the lower end of the roller 302 is squeezed upward. The roller 302 can slide upward at the lower end of the top plate 3 through the sliding frame 301, while the lower end of the roller 302 is horizontally rotated and attached to the upper end of the steel strand. The roller 302 can form a contact limit on the upper end of the steel strand, so that the sliding frame 301 and the gear 102 can form a bidirectional squeezing limit on the steel strand. Example 4: Refer to the appendix of the instruction manual Figure 6-8 It can be seen that the difference between Embodiment 4 and Embodiments 1-3 is that the top plate 3 is provided with an inclined plate 403 inside, a rotating shaft 401 slides on the inner side of the lower end of the inclined plate 403, protrusions 402 are provided on both sides of the rotating shaft 401, and a sliding plate 4 swings at the lower end of the rotating shaft 401. Among them: the slide plate 4 is inclined at 15-65°, the upper end of the sliding frame 301 is provided with a track, the lower end of the slide plate 4 slides inside the track, and when the sliding frame 301 is not upward, the upper end of the slide plate 4 is on one side of the lower end of the inclined plate 403. The skateboard 4 is tilted at 15-65°, and the skateboard 4 swings at the lower end of the ramp 403 via the pivot 401. When the sliding frame 301 is not in the upward position, the upper end of the slide plate 4 is on one side of the lower end of the inclined plate 403, while the lower end of the slide plate 4 is on one side inside the track of the sliding frame 301. Please refer to the instruction manual appendix. Figure 6 As shown; The upper end of the sliding frame 301 has a track with a length of 5-6cm. The lower end of the slide plate 4 slides inside the track. Please refer to the instruction manual for details. Figure 6 As shown; The inclined plate 403 has a groove at its lower end and grooves on both sides of the groove. The inclined plate 403 is inclined downward at 45° and the inclination direction of the inclined plate 403 is opposite to the inclination direction of the slide plate 4. The ramp 403 is tilted downwards at 45°, and the tilt direction of the ramp 403 is opposite to the tilt direction of the slide 4. Please refer to the instruction manual appendix. Figure 8 As shown; The rotating shaft 401 and the protrusion 402 are arranged in an inclined swing inside the slide groove, while the protrusion 402 swings synchronously with an angle of 5-45°. The protrusion 402 slides inclined inside the groove of the inclined plate 403. The rotating shaft 401 swings at an angle inside the groove, while the protrusion 402 swings synchronously. The swing angle is 5-45° to avoid the situation where the swing angle of the rotating shaft 401 is too large, which would cause the protrusion 402 to be unable to swing synchronously due to the limited space inside the groove of the inclined plate 403. When the sliding frame 301 slides upward due to the upward pressure of the steel strand on the lower end of the top plate 3, the sliding frame 301 is pressed upward to the lower end of the slide plate 4. When the sliding frame 301 is not moving upward, the upper end of the slide plate 4 is on one side of the lower end of the inclined plate 403. The upper end of the slide plate 4 slides upward on the lower end of the inclined plate 403 through the pivot 401, while the lower end of the slide plate 4 slides horizontally inside the track of the sliding frame 301. The slide plate 4 as a whole tilts and swings. Since the upper end of the skateboard 4 slides upward, the skateboard 4 utilizes the sliding inertia of the pivot 401 and its own weight to make the pivot 401 slide from top to bottom at the lower end of the ramp 403, and the skateboard 4 slides downward simultaneously. Since the lower end of the skateboard 4 is located on one side inside the track of the sliding frame 301, the lower end of the skateboard 4 slides inside the track. When the lower end of the skateboard 4 slides to the side of the track, the lower end of the skateboard 4 can no longer slide. At this time, the slide plate 4 can press down to the lower end of the sliding frame 301. Therefore, the sliding frame 301 can use its own downward sliding inertia and the pressing of the slide plate 4 to drive the roller 302 to form a downward pressing limit on the upper end of the steel strand. This allows the wire guiding device to form a bidirectional clamping limit on the upper and lower ends of the PC multi-strand steel strand according to the diameter of the PC multi-strand steel strand during the guiding process, thus preventing the PC multi-strand steel strand from shifting during the guiding process.

Claims

1. A PC multi-strand steel strand threading guide device, comprising a housing (1), characterized in that: A motor (101) is provided on one side of the housing (1). A gear (102) is rotatably connected to one end of the motor (101) near the housing (1). A belt (103) is rotatably fitted on the outside of the gear (102). A driven gear (104) is rotatably connected to the side of the belt (103) away from the gear (102). The housing (1) has holes through both sides, and steel strands pass through the inside of the holes. The output shaft of the motor (101) is rotated and embedded inside the housing (1). The motor (101) is connected to the power circuit through the power line. Gear (102), gear (102) and driven gear (104) rotate inside the housing (1). Gear (102) and driven gear (104) are both located below the holes on both sides of the housing (1). Gear (102) drives driven gear (104) to rotate through belt (103). The driven gear (104) and the gear (102) are both provided with grooves on their edges. Limiting mechanisms are provided on both sides inside the grooves. The lower end of the steel strand slides and fits against the upper end of the gear (102) and the driven gear (104). The limiting mechanism includes a slider (2), a connecting rod (201), a deformable ring (202), a connecting rope (203), and a weight (204). The slider (2) slides on both sides of the grooves of the gear (102) and the driven gear (104). The connecting rod (201) is located at one end of the slider (2). The deformable ring (202) is embedded in the end of the connecting rod (201) away from the slider (2). The connecting rope (203) is embedded in both sides inside the deformable ring (202). The weight (204) is suspended at the connecting end of the connecting rope (203). The slider (2) slides and extends to the outside of the groove. The sliders (2) are in groups of two. Each group of sliders (2) is matched with the groove. The side of the slider (2) is horizontally squeezed and slid with the steel strand. The connecting rod (201), the deformable ring (202), the connecting rope (203) and the weight (204) are all located inside the grooves of the gear (102) and the driven gear (104). The connecting rod (201) is arranged in an arc shape, and the end of the connecting rod (201) away from the slider (2) is distributed on both sides of the upper end of the deformable ring (202). The deformable ring (202) is semi-circular with a semi-circular angle of 180°, and the connecting rope (203) is located on the inner side of the upper end of the deformable ring (202); The connecting rope (203) and the weight (204) are located on both sides of the weight (204). The connecting rope (203) and the weight (204) are arranged in a triangular pattern. The lower end of the weight (204) is conical. The weight (204) weighs 100-200g.

2. The PC multi-strand steel strand threading guide device according to claim 1, characterized in that: A top plate (3) is installed on the upper end of the inner wall of the housing (1), and a sliding frame (301) is slidably nested at the lower end of the top plate (3). A roller (302) rotates at the lower end of the sliding frame (301).

3. The PC multi-strand steel strand threading guide device according to claim 2, characterized in that: The top plate (3) has a groove at its lower end, and the sliding frame (301) is slidably nested inside the groove. The sliding frame (301) and the top plate (3) extend horizontally through the interior of the shell (1), and the sliding frame (301) is T-shaped on the side. Rollers (302) are arranged horizontally. There are 5-7 rollers (302). The lower end of the roller (302) is horizontally rotated and attached to the upper end of the steel strand. The roller (302) slides vertically at the lower end of the sliding frame (301).

4. The PC multi-strand steel strand threading guide device according to claim 2, characterized in that: The top plate (3) has an inclined plate (403) inside. A rotating shaft (401) slides on the inner side of the lower end of the inclined plate (403). Protrusions (402) are provided on both sides of the rotating shaft (401). A sliding plate (4) swings at the lower end of the rotating shaft (401).

5. The PC multi-strand steel strand threading guide device according to claim 4, characterized in that: The slide plate (4) is tilted at 15-65°. The upper end of the sliding frame (301) is provided with a track. The lower end of the slide plate (4) slides inside the track. When the sliding frame (301) is not moving upward, the upper end of the slide plate (4) is on one side of the lower end of the inclined plate (403).

6. The PC multi-strand steel strand threading guide device according to claim 4, characterized in that: The lower end of the inclined plate (403) is provided with a sliding groove, and the two sides of the sliding groove are provided with grooves. The inclined plate (403) is inclined downward at 45°, and the inclination direction of the inclined plate (403) is opposite to the inclination direction of the sliding plate (4). The rotating shaft (401) and the protrusion (402) are tilted and swing inside the groove, while the protrusion (402) swings synchronously with an angle of 5-45°. The protrusion (402) slides tilted inside the groove of the inclined plate (403).

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