Prestressed steel strand unloading device

Abstract

The utility model relates to pre -stressed steel strand blanking technical field especially relates to a pre -stressed steel strand blanking device. The utility model discloses support frame, line roller and first guide device, support frame sets up vertically, line roller sets up horizontally and rotatably installs on support frame, and pre -stressed steel strand is set up at the outside of line roller, first guide device includes guide subassembly and two parallel with the axis of line roller and oppositely arranged track, and two tracks are located at the circumferential outside of pre -stressed steel strand, and guide subassembly is installed on two tracks in the movable mode along the extension direction of two tracks, and guide subassembly is set up with first blanking channel, and the blanking end of pre -stressed steel strand is worn in first blanking channel. Through setting up guide subassembly and track, guide subassembly can move along the extension direction of track, and it can adapt to the swing of pre -stressed steel strand in the process of blanking.

Description

Technical Field

[0001] This utility model relates to the field of prestressed steel strand cutting technology, and in particular to a prestressed steel strand cutting device. Background Technology

[0002] Prestressed steel strands are core load-bearing materials in projects such as highways, high-speed railways, bridges, dams, and water conservancy tunnels, especially suitable for concrete structures with large spans and heavy loads. Prestressed steel strands are mainly divided into three types: bonded prestressed steel strands, deferred-bonded prestressed steel strands, and unbonded prestressed steel strands. Bonded prestressed steel strands involve pre-embedding ducts during construction, laying the steel strands after the structure reaches sufficient strength, tensioning them, and then injecting cement grout. Once the grout has reached sufficient strength, a permanent bond is formed with the concrete, a complex process. Deferred-bonded prestressed steel strands are prepared using modern technology with a high-molecular-weight retarder adhesive and a high-density polyethylene sheath, and have surface ribs. The initial bond strength is weak, gradually increasing over time; this is a one-time construction process. Unbonded prestressed steel strands have a grease and plastic sheath coating on the surface, with no direct bond to the concrete, allowing them to slide freely. They are anchored solely by the tensioning force of the anchors at both ends.

[0003] Currently, since prestressed steel strands are usually formed by twisting multiple high-strength steel wires together, they have a large tension. Therefore, in the construction site, a prestressed steel strand cutting device is usually used to cut the prestressed steel strands to protect the personal safety of on-site operators and ensure the performance of the prestressed steel strands themselves.

[0004] In existing technologies, prestressed steel strands are typically placed horizontally or vertically within a frame. Operators release the prestressed steel strands by pulling on their ends for cutting. However, due to the high tension of the prestressed steel strands, they are prone to significant swaying during pulling, making it difficult for operators to control the cutting path. This can easily lead to the prestressed steel strands getting stuck in the frame during cutting, reducing cutting efficiency and consequently affecting construction progress. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a prestressed steel strand feeding device, which solves the technical problem that the operator cannot control the feeding path of the prestressed steel strand during feeding, making the prestressed steel strand prone to jamming and reducing feeding efficiency.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model provides a prestressed steel strand feeding device, including a support frame, a wire-laying roller, and a first guiding device. The support frame is vertically arranged, and the wire-laying roller is horizontally arranged and rotatably mounted on the support frame. The prestressed steel strand is sleeved on the outside of the wire-laying roller. The first guiding device includes a guiding component and two tracks parallel to the axis of the wire-laying roller and arranged opposite to each other. The two tracks are located on the circumferential outer side of the prestressed steel strand. The guiding component is movably mounted on the two tracks in the extension direction of the two tracks to accommodate the swing of the prestressed steel strand. The guiding component has a first feeding channel, and the feeding end of the prestressed steel strand passes through the first feeding channel so that the guiding component guides the feeding path of the prestressed steel strand.

[0010] Preferably, the guiding assembly includes a movable seat and a plurality of first guide balls; the movable seat is movably mounted on the two tracks and located between the two tracks, the movable seat has a through hole, the plurality of first guide balls are rotatably fixed to the circumferential sidewall of the through hole, and the plurality of first guide balls are circumferentially arranged to form the first feeding channel, the outer wall of the plurality of first guide balls can fit against the outer wall of the prestressed steel strand to guide the feeding path of the prestressed steel strand; the movable seat can move along the extension direction of the two tracks as the prestressed steel strand swings during feeding.

[0011] Preferably, the guide assembly further includes a plurality of rollers; the plurality of rollers are rotatably embedded on both sides of the movable seat, and the movable seat is engaged between the two tracks by the plurality of rollers so as to be movable along the tracks.

[0012] Preferably, the placing roller includes a coaxially arranged roller shaft and two clamping rollers; the two clamping rollers are respectively fixedly connected to both ends of the roller shaft, and a ball bearing is fixedly sleeved on the outer wall of each clamping roller; the support frame includes two support plates, both of which are vertically arranged and spaced apart in the horizontal direction, and the roller shaft is located between the two support plates; each support plate has a groove on its top and a slot on the inner wall of the groove; the two clamping rollers can be placed in the corresponding grooves respectively, and the two ball bearings can be placed in the corresponding slots respectively, so as to mount the placing roller on the support frame; the prestressed steel strand is sleeved on the outer wall of the roller shaft.

[0013] Preferably, the prestressed steel strand feeding device further includes a limiting device; the limiting device includes a fixed plate, a movable plate, and a locking assembly. The fixed plate is fixedly sleeved on the outer wall of the roller shaft, and the movable plate is movably sleeved on the outer wall of the roller shaft along the axis of the roller shaft. The prestressed steel strand is located between the fixed plate and the movable plate, and the movable plate can cooperate with the fixed plate to clamp the prestressed steel strand, thereby limiting the position of the prestressed steel strand. The locking assembly has a locking end, which passes through the outer peripheral wall of the movable plate and is inserted into the outer wall of the roller shaft to lock the movable plate onto the roller shaft.

[0014] Preferably, the outer wall of the roller shaft has an elongated groove, the extension direction of which is parallel to the axis of the roller shaft, and the end of the elongated groove away from the fixed disk passes through the end face of the roller shaft; the inner wall of the elongated groove near the axis of the roller shaft has a plurality of locking holes, which are spaced apart along the extension direction of the elongated groove; the inner wall of the movable disk is connected to a protrusion corresponding to the elongated groove, and the protrusion is placed in the elongated groove so that the elongated groove and the protrusion guide the movement trajectory of the movable disk; the locking end can pass through the outer peripheral wall of the movable disk and the protrusion in sequence and be inserted into any one of the locking holes to lock the movable disk at any position on the elongated groove.

[0015] Preferably, the locking assembly includes a locking rod, a fixing plate, and an elastic element; the movable disk has a moving space inside, and the end of the locking rod facing the roller shaft is the locking end, which can pass through the outer peripheral wall of the movable disk and the protrusion in sequence perpendicular to the axis of the movable disk and be inserted into any of the locking holes; the fixing plate and the elastic element are both placed in the moving space, the fixing plate is fixedly sleeved on the outer wall of the locking rod, and the elastic element is sleeved on the outside of the locking rod, and the two ends of the elastic element respectively abut against the end of the fixing plate away from the locking and the side of the moving space away from the fixing plate, for providing rebound force and buffer force for the fixing plate and the locking rod.

[0016] Preferably, the locking components are provided in multiple sets, and the multiple sets of locking components are arranged circumferentially around the axis of the moving disk; the long grooves are provided in multiple sets, and the multiple long grooves are arranged circumferentially around the axis of the roller shaft, and multiple protrusions are fixedly connected to the inner wall of the moving disk, the multiple protrusions are arranged circumferentially around the axis of the moving disk, and the multiple protrusions correspond one-to-one with the multiple long grooves.

[0017] Preferably, the fixing plate has multiple circular holes arranged circumferentially around the axis of the fixing plate, and the fixing end of the prestressed steel strand can be fixedly inserted into any of the circular holes for fixing the fixing end of the prestressed steel strand.

[0018] Preferably, the prestressed steel strand feeding device further includes a rotating rod and a deceleration assembly; the deceleration assembly includes a belt and a driven wheel; the rotating rod is inserted into one end of the clamping roller away from the roller shaft, and the rotating rod is coaxial with the clamping roller; the rotating rod can drive the placing roller to rotate around its own axis to release and retract the prestressed steel strand; the clamping roller is provided with a driving wheel, the driven wheel is rotatably mounted on the outer wall of the support plate, the axis of the driven wheel is parallel to the axis of the clamping roller, and the driven wheel is located on one side of the rotating rod; the belt is sleeved on the driven wheel and the driving wheel.

[0019] (III) Beneficial Effects

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

[0021] This utility model discloses a prestressed steel strand feeding device. By setting up a guide assembly and a track, the guide assembly can move along the extension direction of the track and adaptively respond to the swaying of the prestressed steel strand during feeding. Specifically, a first feeding channel is provided on the guide assembly, through which the feeding end of the prestressed steel strand passes to guide the feeding path. Because the prestressed steel strand itself has significant tension, it will bend and sway during continuous feeding. The guide assembly can move along the track, allowing it to adapt to the bending and swaying amplitude of the prestressed steel strand. This enables better control of the feeding path, preventing the operator from losing control of the feeding path and avoiding jamming during feeding. This improves the feeding efficiency of the prestressed steel strand while ensuring the personal safety of the operator. Meanwhile, the guide components also ensure the structural integrity and product performance of the prestressed steel strands. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a prestressed steel strand feeding device according to the present invention;

[0023] Figure 2 This is a schematic diagram of the overall three-dimensional structure of a prestressed steel strand feeding device of this utility model, excluding the frame.

[0024] Figure 3 This is a schematic side view of the overall structure of the first guide device of the prestressed steel strand feeding device of this utility model.

[0025] Figure 4 This is a schematic diagram of the overall three-dimensional structure of the wire feeding roller, the limiting device and the ball bearing of the prestressed steel strand feeding device of this utility model.

[0026] Figure 5 This is a cross-sectional structural diagram of the moving disc and locking assembly of a prestressed steel strand feeding device according to the present invention.

[0027] Figure 6 for Figure 5 Enlarged structural diagram at point A in the middle;

[0028] Figure 7 This is a three-dimensional schematic diagram of the overall structure of the rotating rod of a prestressed steel strand feeding device according to the present invention;

[0029] Figure 8 This is a three-dimensional schematic diagram of the overall structure of the second guide device of a prestressed steel strand feeding device according to the present invention.

[0030] [Explanation of Labels in the Attached Image]

[0031] 1: Support frame; 11: Support plate; 111: Groove; 112: Slot; 2: Wire placing roller; 21: Roller shaft; 211: Long groove; 212: Locking hole; 22: Snap-fit ​​roller; 221: Slot; 3: First guide device; 31: Guide assembly; 311: Moving seat; 312: First guide ball; 32: Track; 33: Roller; 34: Mounting plate; 4: Ball bearing; 5: Limiting device; 51: Fixed plate; 511: Round hole; 52: Moving plate; 521: Protrusion; 522: Moving hole 53: Locking assembly; 531: Locking rod; 532: Fixing plate; 533: Elastic element; 6: Rotating rod; 61: Handwheel; 62: Rod body; 63: Plug; 7: Reduction assembly; 71: Belt; 72: Driven wheel; 8: Frame; 81: Vertical rod; 82: Long horizontal rod; 83: Short horizontal rod; 84: Reinforcing rod; 85: Connecting plate; 86: Foot; 87: Base; 9: Second guide device; 91: Fixing seat; 92: Second guide ball; a: First feeding channel; b: Second feeding channel. Detailed Implementation

[0032] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0033] Example 1

[0034] like Figure 1 As shown, a prestressed steel strand cutting device according to this embodiment includes a support frame 1, a wire placing roller 2, and a first guiding device 3.

[0035] Specifically, such as Figure 2 As shown, the support frame 1 is vertically arranged, and the wire-laying roller 2 is horizontally arranged and rotatably mounted on the support frame 1. The prestressed steel strand is sleeved on the outside of the wire-laying roller 2. The first guiding device 3 includes a guiding component 31 and two tracks 32 parallel to the axis of the wire-laying roller 2 and arranged opposite to each other. The two tracks 32 are located on the circumferential outer side of the prestressed steel strand and are fixedly mounted on the support plate 11 by a mounting plate 34. The guiding component 31 is mounted on the two tracks 32 in a movable manner along the extension direction of the two tracks 32 to accommodate the swing of the prestressed steel strand. The guiding component 31 has a first feeding channel a, and the feeding end of the prestressed steel strand passes through the first feeding channel a so that the guiding component 31 guides the feeding path of the prestressed steel strand.

[0036] By setting up the guide component 31 and the track 32, the guide component 31 can move along the extension direction of the track 32, and it can adapt to the swaying that occurs during the feeding of the prestressed steel strand. Specifically, a first feeding channel a is provided on the guide assembly 31. The feeding end of the prestressed steel strand passes through the first feeding channel a to guide the feeding path of the prestressed steel strand. Because the prestressed steel strand itself has significant tension, it will bend and sway during continuous feeding. At this time, the guide assembly 31 can move on the track 32, allowing it to move with the bending and swaying amplitude of the prestressed steel strand. This enables the guide assembly 31 to adapt to the bending and swaying of the prestressed steel strand, thus better controlling the feeding path and preventing the operator from losing control of the feeding path during the feeding process. This also prevents jamming during feeding, improving the feeding efficiency of the prestressed steel strand while ensuring the personal safety of the operator. Furthermore, the guide assembly 31 also ensures the structural integrity and product performance of the prestressed steel strand. Preferably, the mounting frame can limit the swing of the prestressed steel strand, preventing the prestressed steel strand from causing the guide assembly 31 to detach from the track 32 due to its excessive tension, thereby improving the guiding stability of the guide assembly 31.

[0037] Furthermore, such as Figure 2As shown, the guiding assembly 31 includes a movable base 311 and a plurality of first guide balls 312. The movable base 311 is movably mounted on two tracks 32 and located between the two tracks 32. The movable base 311 has a through hole, and the plurality of first guide balls 312 are rotatably fixedly installed on the circumferential sidewall of the through hole. The plurality of first guide balls 312 are circumferentially arranged to form a first feeding channel a. The outer wall of the plurality of first guide balls 312 can fit against the outer wall of the prestressed steel strand to guide the feeding path of the prestressed steel strand. By opening a through hole in the movable base 311 and rotatably installing a plurality of first guide balls 312 in the through hole, the prestressed steel strand can change from traditional sliding friction to rolling friction during feeding, which greatly reduces the friction force of the prestressed steel strand during feeding, reduces the feeding resistance, and makes the prestressed steel strand smoother when released and retracted. Furthermore, the multiple first guide balls 312 can protect the product performance of the prestressed steel strand and prevent damage. Simultaneously, the movable seat 311 can move along the extension direction of the two tracks 32 as the prestressed steel strand swings during feeding, thus adapting to the swing caused by its own tension during feeding, preventing jamming of the prestressed steel strand, and better controlling the feeding path, improving feeding efficiency. Of course, to further prevent the movable seat 311 from detaching from the tracks 32, a limiting plate (not shown in the figure) can be welded to each end of the two tracks 32 to prevent the movable seat 311 from detaching from the tracks 32 as the prestressed steel strand swings.

[0038] Furthermore, such as Figure 3 As shown, the guide assembly 31 also includes multiple rollers 33. The multiple rollers 33 are rotatably embedded on both sides of the movable seat 311, and the movable seat 311 is secured between two tracks 32 by the multiple rollers 33, allowing it to move along the tracks 32. By rotatably embedding multiple rollers 33 on both sides of the movable seat 311, the sliding friction between the movable seat 311 and the tracks 32 can be transformed into rolling friction, reducing the frictional resistance between the movable seat 311 and the tracks 32. This allows the movable seat 311 to move more smoothly on the tracks 32, better accommodating the swaying motion during the cutting of prestressed steel strands.

[0039] Furthermore, such as Figure 2 and Figure 4As shown, the thread-setting roller 2 includes a coaxially arranged roller shaft 21 and two snap-fit ​​rollers 22. The two snap-fit ​​rollers 22 are respectively fixedly connected to both ends of the roller shaft 21, and a ball bearing 4 is fixedly sleeved on the outer wall of each snap-fit ​​roller 22. The support frame 1 includes two support plates 11, both of which are vertically arranged and spaced apart in the horizontal direction, and the roller shaft 21 is located between the two support plates 11. Each support plate 11 has a groove 111 on its top, and a slot 112 is formed on the inner wall of the groove 111. The two snap-fit ​​rollers 22 can be placed in the corresponding grooves 111 respectively, and the two ball bearings 4 can be placed in the corresponding slots 112 respectively, so as to accurately mount the thread-setting roller 2 on the support frame 1 and prevent the thread-setting roller 2 from tilting or tipping over. Furthermore, the outer ring of the ball bearing 4 fits against the inner wall of the slot 112, and the inner ring is fixedly connected to the outer wall of the clamping roller 22. This allows the outer ring of the ball bearing 4 to remain stationary due to the weight of the wire-setting roller 2 itself. During feeding, the wire-setting roller 2 rotates through the inner ring of the ball bearing 4, thus enabling it to rotate along with the feeding of the prestressed steel strand. Simultaneously, the slot 112 positions and guides the ball bearing 4, ensuring that the wire-setting roller 2 is horizontally and stably mounted on the support frame 1, preventing instability and improving its stability. The prestressed steel strand is sleeved on the outer wall of the roller shaft 21.

[0040] Furthermore, such as Figure 2 and Figure 4As shown, the prestressed steel strand feeding device also includes a limiting device 5. The limiting device 5 includes a fixed plate 51, a movable plate 52, and a locking assembly 53. The fixed plate 51 is fixedly sleeved on the outer wall of the roller 21. The movable plate 52 is movably sleeved on the outer wall of the roller 21 along its axis. The prestressed steel strand is located between the fixed plate 51 and the movable plate 52, and the movable plate 52 cooperates with the fixed plate 51 to clamp the prestressed steel strand, thereby limiting the position of the prestressed steel strand and preventing axial movement due to changes in its own tension as the feeding roller 2 rotates. This prevents the prestressed steel strand from jamming during feeding. Furthermore, the movable plate 52 can move along the axis of the roller 21, allowing the limiting device 5 to adapt to prestressed steel strands of different thicknesses, improving the adaptability of the feeding device. The locking assembly 53 is provided with a locking end, which passes through the outer peripheral wall of the movable disk 52 and is inserted into the outer wall of the roller shaft 21 to lock the movable disk 52 onto the roller shaft 21. This ensures that the movable disk 52 can cooperate with the fixed disk 51 to clamp the prestressed steel strand, preventing the prestressed steel strand from shifting due to loosening of the movable disk 52, and improving the stability of the limiting device 5. Moreover, by clamping the prestressed steel strand with the movable disk 52 and the fixed disk 51, the swing amplitude of the prestressed steel strand can also be limited, preventing the prestressed steel strand from swinging too much due to its own excessive tension, which could cause the movable seat 311 to move out of the track 32, thus ensuring the structural integrity of the feeding device.

[0041] Preferably, such as Figure 4 As shown, the fixing plate 51 has multiple circular holes 511 arranged circumferentially around the axis of the fixing plate 51. The fixing end of the prestressed steel strand can be fixedly inserted into any of the circular holes 511 to fix the fixing end of the prestressed steel strand, which facilitates the fixing of the prestressed steel strand. That is, no matter where the fixing end of the prestressed steel strand is located in the fixing plate 51, it can be inserted into the corresponding circular hole 511. The fixing end of the prestressed steel strand is wrapped with steel wire rope, rope, etc. to increase the outer diameter of the fixing end of the prestressed steel strand, prevent the fixing end from falling out of the circular hole 511, and ensure that the fixing end can be stably inserted into the corresponding circular hole 511. At the same time, it avoids the fixing end falling out of the circular hole 511, which would cause the prestressed steel strand to loosen due to its own tension.

[0042] Furthermore, such as Figure 2 and Figure 4As shown, a long groove 211 is formed on the outer wall of the roller 21. The extension direction of the long groove 211 is parallel to the axis of the roller 21, and the end of the long groove 211 away from the fixed plate 51 passes through the end face of the roller 21, which allows the movable plate 52 to be detached from the roller 21 for easy installation of prestressed steel strands. Multiple locking holes 212 are formed on the inner wall of the long groove 211 near the axis of the roller 21, and the locking holes 212 are spaced apart along the extension direction of the long groove 211. A protrusion 521 corresponding to the long groove 211 is connected to the inner wall of the movable plate 52. The protrusion 521 is placed inside the long groove 211 so that the long groove 211 and the protrusion 521 guide the movement trajectory of the movable plate 52. The locking end can pass through the outer peripheral wall of the movable disk 52 and the protrusion 521 in sequence and be inserted into any locking hole 212 to lock the movable disk 52 at any position on the long groove 211, thereby enabling the movable disk 52 and the fixed disk 51 to cooperate to clamp prestressed steel strands of different thicknesses and improve the adaptability of the feeding device.

[0043] Furthermore, such as Figure 5 and Figure 6 As shown, the locking assembly 53 includes a locking rod 531, a fixing plate 532, and an elastic element 533. The movable disk 52 has a moving space 522 inside. The end of the locking rod 531 facing the roller shaft 21 is the locking end, which can pass perpendicularly to the axis of the movable disk 52 through the outer peripheral wall of the movable disk 52 and the protrusion 521, and be inserted into any locking hole 212. The fixing plate 532 and the elastic element 533 are both placed within the moving space 522. The fixing plate 532 is fixedly sleeved on the outer wall of the locking rod 531, and the elastic element 533 is sleeved on the outside of the locking rod 531. Both ends of the elastic element 533 abut against the end of the fixing plate 532 away from the locking point and the side of the moving space 522 away from the fixing plate 532, respectively, to provide a restoring force and a buffering force for the fixing plate 532 and the locking rod 531.

[0044] By setting a locking rod 531, a fixing plate 532, and an elastic element 533, when it is necessary to lock the movable disk 52 at a certain position on the roller shaft 21, the elastic element 533 can continuously apply a rebound force to the fixing plate 532, so that the locking rod 531 has a continuous force in the direction of the locking hole 212, thereby allowing the locking rod 531 to be stably inserted into the locking hole 212, and thus allowing the movable disk 52 to be stably locked at that position. When it is necessary to unlock the movable disk 52, pull the locking lever 531 in the direction away from the locking hole 212, so that the locking lever 531 disengages from the locking hole 212. At this time, the elastic element 533 provides a buffer force for the fixed plate 532, preventing the fixed plate 532 from colliding with the movable space 522 due to excessive pulling force and causing damage. This can unlock the locking lever 531 from the locking hole 212, thereby unlocking the movable disk 52, changing the position of the movable disk 52, and improving the convenience of locking and unlocking the movable disk 52. This makes locking and unlocking the movable disk 52 more convenient and faster, and it is also more stable when locked.

[0045] To clarify, the movable disk 52 can be divided into two parts, namely, two parts of the same thickness (not shown in the figure) perpendicular to the axis of the movable disk 52, and receiving grooves are formed on the opposite side walls of the two parts. The two corresponding receiving grooves together form the movable space 522. When installing the fixing plate 532 and the elastic element 533, the elastic element 533 can be first sleeved on the locking rod 531, then the fixing plate 532 can be sleeved on the outer wall of the locking rod 531, and then the fixing plate 532 and the elastic element 533 can be placed in the receiving groove to determine the position of the locking end of the locking rod 531, the fixing plate 532 and the elastic element 533. After determining the positions of the locking end of the locking rod 531, the fixing plate 532, and the elastic element 533, the fixing plate 532 is fixed to the locking rod 531. Then, the locking rod 531, the fixing plate 532, and the elastic element 533 are placed in the receiving groove. Finally, the two parts are combined into one, and the locking rod 531, the fixing plate 532, and the elastic element 533 are placed in the corresponding moving space 522. Finally, the two parts are fixedly connected by welding, thereby realizing the installation of the locking assembly 53.

[0046] Preferably, such as Figure 4 and Figure 5As shown, multiple sets of locking components 53 are arranged circumferentially around the axis of the moving disk 52. Multiple long grooves 211 are arranged circumferentially around the axis of the roller shaft 21, and multiple protrusions 521 are fixedly connected to the inner wall of the moving disk 52, also arranged circumferentially around the axis of the moving disk 52, with each protrusion corresponding to one of the multiple long grooves 211. By setting multiple sets of locking components 53, correspondingly, the number of long grooves 211 and protrusions 521 is also the same as the number of locking components 53. The multiple protrusions 521 and multiple long grooves 211 further improve the guidance of the moving disk 52, making the moving disk 52 more stable during movement and preventing it from deviating in any direction. The multiple locking components 53 enhance stability when locking the movable disc 52, preventing displacement of the movable disc 52 due to the tension of the prestressed steel strands when a single locking component 53 is used. This improves the locking effect of the movable disc 52 and the clamping effect of the movable disc 52 and the fixed disc 51 on the prestressed steel strands. The installation of multiple locking components 53 can be performed according to the above-described procedure, and will not be elaborated upon here.

[0047] Furthermore, such as Figure 2 As shown, the prestressed steel strand cutting device also includes a rotating rod 6 and a reduction gear assembly 7. The reduction gear assembly 7 includes a belt 71 and a driven pulley 72.

[0048] Specifically, a rotating rod 6 is inserted at the end of a clamping roller 22 away from the roller shaft 21, and the rotating rod 6 is coaxial with the clamping roller 22. The rotating rod 6 can drive the wire-laying roller 2 to rotate actively around its own axis to release and retract the prestressed steel strand, realizing the release and retraction of the prestressed steel strand. The clamping roller 22 is equipped with a driving wheel (not shown in the figure), and a driven wheel 72 is rotatably mounted on the outer wall of the support plate 11. The axis of the driven wheel 72 is parallel to the axis of the clamping roller 22, and the driven wheel 72 is located on one side of the rotating rod 6. A belt 71 is sleeved on the driven wheel 72 and the driving wheel. By setting the driving wheel, the driven wheel 72, and the belt 71, the driven wheel 72 and the driving wheel can form a transmission cooperation, so that the frictional resistance between the belt 71 and the driving wheel and the frictional resistance between the driven wheel 72 and the belt 71 can effectively slow down the rotation speed of the wire-laying roller 2. When the prestressed steel strand is under significant tension, the rotational speed of the winding roller 2 increases during release and retraction. Furthermore, due to the considerable weight of both the winding roller 2 and the prestressed steel strand, operators cannot control the rotational speed, leading to the prestressed steel strand swinging and posing a significant risk of injury to the operator and damage to the strand itself. By incorporating a belt 71, a drive pulley, and a driven pulley 72, the friction between the belt 71 and the drive pulley, and between the driven pulley 72 and the belt 71, slows down the rotational speed of the winding roller 2. Simultaneously, the weight of the driven pulley 72 converts some of the energy from the belt 71's movement into rotational kinetic energy, allowing it to resist speed variations caused by the belt 71. This prevents safety risks caused by excessively rapid release or retraction of the prestressed steel strand and ensures a more uniform speed for release and winding. It should be noted that the belt 71 has sufficient tension to provide adequate friction for the driven pulley 72 and the drive pulley. Furthermore, the driven wheel is preferably made of the same material as the snap-fit ​​roller 22 and the driving wheel, such as stainless steel, to achieve uniform speed when releasing and retracting the prestressed steel strand.

[0049] Among them, such as Figure 4 and Figure 7As shown, the rotating rod 6 includes a handwheel 61, a rod body 62, and a plug 63 connected in sequence. The plug 63 can be inserted into the end of the corresponding clamping roller 22 away from the roller shaft 21. By rotating the handwheel 61, the operator can drive the clamping roller 22 to rotate, thereby driving the roller shaft 21 to rotate, so that the prestressed steel strand sleeved on the roller shaft 21 can be fed and retrieved as the roller shaft 21 rotates. The plug 63 is cross-shaped, and correspondingly, a cross-shaped slot 221 is opened on the end face of the clamping roller 22 away from the roller shaft 21. The rotating rod 6 inserts the plug 63 into the slot 221, thereby facilitating the rotation of the roller shaft 21, and thus facilitating the feeding and retrieval of the prestressed steel strand, improving feeding and retrieval efficiency. Moreover, there are two rotating rods 6, which correspond to two locking rollers 22. That is, slots 221 are opened on the end face of the two locking rollers 22 away from the roller shaft 21. The two rotating rods 6 are inserted into the corresponding slots 221 through plugs 63. Two operators can rotate the two rotating rods 6 at the same time, so as to save more effort when rotating the roller shaft 21.

[0050] like Figure 1 As shown, the prestressed steel strand cutting device of this embodiment also includes a frame 8 in the shape of a frustum and in which the support frame 1 is placed. The frame 8 includes four vertical bars 81, four long horizontal bars 82, four short horizontal bars 83, a reinforcing bar 84, a connecting plate 85, a foot 86, and a base 87.

[0051] Specifically, all four vertical bars 81 are vertically arranged and inclined towards the support frame 1 at an angle of 75°-80°, thus making the frame 8 more stable when standing on the ground. Four long horizontal bars 82 are located in the lower half of the vertical bars 81, and each long horizontal bar 82 has a connecting plate 85 on both sides of its ends. The two ends of the long horizontal bars 82 are connected to the two adjacent vertical bars 81 by bolts, nuts, and connecting plates 85, respectively. Four short horizontal bars 83 are located in the upper part of the vertical bars 81, and each short horizontal bar 83 also has a connecting plate 85 on both sides of its ends. The two ends of the short horizontal bars 83 are connected to the two adjacent vertical bars 81 by bolts, nuts, and connecting plates 85, respectively. The reinforcing rod 84 is X-shaped, consisting of two short rods and one long rod. The long rod is connected to the two short rods in a crisscross pattern, and the opposite ends of the two short rods are fixed to the long rod by welding. The opposite ends of the two short rods and the two ends of the long rod are connected to the two ends of the short crossbar 83 and the two ends of the long crossbar 82 by bolts and nuts, respectively. The long rod and the two short rods are bolted to the two connecting plates 85 on both sides of the corresponding short crossbar 83 and long crossbar 82. This not only connects the reinforcing rod 84 to the long crossbar 82 and short crossbar 83, but also allows the connecting plates 85 to be stably fixed to the vertical rod 81, short crossbar 83, and long crossbar 82. Furthermore, reinforcing rods 84 are connected to both sides of the long crossbar 82 and short crossbar 83 located between two adjacent vertical rods 81, thereby improving the stability of the frame 8. Each vertical bar 81 is fixedly connected to a base 86 at its bottom. The bottom of the base 86 rests on top of the base 87, and the base 86 and base 87 are fixedly connected by bolts to further improve the stability of the frame 8 and prevent the frame 8 from tilting when supported on the ground. To avoid interference between two adjacent long horizontal bars 82 and two adjacent short horizontal bars 83, the two adjacent long horizontal bars 82 and two adjacent short horizontal bars 83 are staggered. By setting up the frame 8, it can protect the operators. When the prestressed steel strand is wrapped in packaging when it is sleeved on the roller 21, the packaging needs to be removed during unloading. However, the prestressed steel strand itself has tension. After the packaging is removed, the prestressed steel strand will loosen due to its own tension and may even break and injure the operators. By setting up the frame 8 and placing the roller 21 inside the frame 8, even if the prestressed steel strand becomes loose when unpacking the prestressed steel strand, it will only collide with the frame 8, thus preventing the prestressed steel strand from falling and injuring the operator, improving operator safety. Furthermore, in this embodiment, the frame 8 is connected by bolts, allowing operators to assemble the frame 8 more quickly and improving installation efficiency. Meanwhile, the bottom of the support frame 1 is fixedly installed on the top surface of the base 87, and the vertical centerline of the support frame 1 is aligned with the vertical centerline of the base 87.

[0052] like Figure 1 and Figure 8 As shown, the prestressed steel strand cutting device of this embodiment also includes a second guiding device 9. The second guiding device 9 includes a fixed base 91 and a plurality of second guiding balls 92. The fixed base 91 is fixedly installed on the top wall of one of the short crossbars 83. A through hole is also provided on the fixed base 91. The plurality of second guiding balls 92 are rotatably installed in the through hole, and the plurality of second guiding balls 92 together form a second cutting channel b. The cutting end of the prestressed steel strand passes through the second cutting channel b to further guide the cutting path of the prestressed steel strand. The first guiding ball 312 in the first guiding device 3 and the second guiding ball 92 in the second guiding device 9 are both made of nylon to prevent damage to the prestressed steel strand and ensure the product performance of the prestressed steel strand. Furthermore, the outer walls of the first guide ball 312 in the first guide device 3 and the second guide ball 92 in the second guide device 9 can both fit against the outer wall of the prestressed steel strand to further improve the guiding function, avoid the prestressed steel strand from bending or shifting due to its own tension, avoid affecting the feeding path of the prestressed steel strand, and improve the feeding accuracy of the prestressed steel strand.

[0053] Preferably, the first guide device 3 is inclined toward the direction of the second guide device 9 to adapt to the feeding path of the prestressed steel strand.

[0054] Example 2

[0055] Based on the structure of the prestressed steel strand cutting device in Example 1, the installation principle of a prestressed steel strand cutting device in this embodiment is as follows:

[0056] First, the base 87 is laid flat on the ground, and two support plates 11 are vertically fixed on the base 87. The fixing plate 51 is fixedly sleeved on the outer wall of the roller 21, and then the wire placing roller 2 is set vertically. The packaged disc of prestressed steel strand is sleeved on the roller 21 by a crane. Then, multiple locking rods 531 are pulled simultaneously, and the moving plate 52 is sleeved on the roller 21 by the cooperation of the protrusion and the long groove 211. The moving plate 52 is moved along the axis of the roller 21 until the moving plate 52 and the fixing plate 51 clamp the disc of prestressed steel strand. Then the locking rods 531 are released, so that the fixing plate 532 moves towards the roller 21 by the rebound force of the elastic element 533, so that the locking end of the locking rod 531 is inserted into the corresponding locking hole 212, thereby fixing the moving plate 52 at the current position of the roller 21. Then, the wire placing roller 2 with the prestressed steel strand sleeved is lifted horizontally by a crane and placed on the support frame 1. Each clamping roller 22 is guided by a ball bearing 4 and a clamping groove 112 to be placed in a groove 111, thereby ensuring that the wire-laying roller 2 is accurately placed on the support frame 1 and preventing it from tilting. At this point, the installation of the wire-laying roller 2 and the prestressed steel strand is completed.

[0057] Next, two tracks 32 are obliquely fixed to two support plates 11 via mounting plates 34. A movable seat 311 is positioned between the two tracks 32 via rollers 33, allowing the movable seat 311 to move freely along the extension direction of the tracks 32. Multiple first guide balls 312 are rotatably mounted inside the movable seat 311, forming a first feeding channel a. Then, a driven wheel 72 is rotatably mounted on the support plate 11, and a belt 71 is fitted onto the driven wheel 72 and the driving wheel.

[0058] Then, the frame 8 is assembled. First, the four vertical bars 81 are connected to the base 87 via the feet 86. Then, the four long horizontal bars 82 and the four short horizontal bars 83 are connected to the four vertical bars 81 via connecting plates 85, bolts, and nuts, forming a frustum-shaped frame 8. Then, the reinforcing bars 84 are connected to the short horizontal bars 83 and the long horizontal bars 82 via bolts and nuts, thereby making the frame 8 more stable.

[0059] Finally, the second guide device 9 is fixedly installed on the top wall of one of the short crossbars 83, and multiple second guide balls 92 form the second feeding channel b. The tilt direction of the first guide device 3 faces the second guide device 9. Thus, the installation of the feeding device is completed. Figure 1 As shown.

[0060] Example 3

[0061] Using the prestressed steel strand cutting device in Example 1 and the already installed cutting device in Example 2, the cutting principle of the prestressed steel strand cutting device in this embodiment is as follows:

[0062] First, the packaging of the disc-shaped prestressed steel strand is removed. Due to the tension inherent in the prestressed steel strand, it will immediately loosen upon removal of the packaging and collide with the frame 8. After the prestressed steel strand stabilizes, the operator pulls the fixed end of the prestressed steel strand through one of the circular holes 511 on the fixing disc 51, and wraps multiple turns of steel wire rope or rope around the end passing through the circular hole 511 to enlarge the outer diameter of the fixed end of the prestressed steel strand, thereby fixing the fixed end of the prestressed steel strand. Then, the operators take out two rotating rods 6 and insert the plugs 63 of the two rotating rods 6 into the slots 221 of their corresponding clamping rollers 22. The two operators simultaneously rotate the rotating rods 6, releasing the prestressed steel strands from the roller shaft 21 to achieve feeding. Another operator pulls the feeding end of the prestressed steel strands, causing it to pass through the first feeding channel a and the second feeding channel b in sequence, so that the outer wall of the prestressed steel strands is in contact with multiple first guide balls 312 and multiple second guide balls 92, thereby guiding the feeding path of the feeding end. The two operators continue to rotate the rotating rods 6, so that the prestressed steel strands are always fed along the feeding path of the first feeding channel a and the second feeding channel b. Furthermore, during the feeding process, the prestressed steel strands swing due to their own tension, which drives the moving seat 311 to move along the track 32, so that the moving seat 311 can adapt to the swing of the prestressed steel strands. At the same time, due to the friction between the belt 71, the driven pulley 72 and the driving pulley, as well as the weight of the driven pulley 72 itself, the roller 2 rotates at a relatively uniform speed when rotating.

[0063] After the initial feeding is complete, when the remaining prestressed steel strand needs to be retracted onto the feeding roller 2, the two operators rotate in opposite directions, causing the feeding end of the prestressed steel strand to pass sequentially through the second feeding channel b and the first feeding channel a and be rewound onto the roller shaft 21. The moving seat 311 always adapts to the swing of the prestressed steel strand. Once the feeding end of the prestressed steel strand is disengaged from the first feeding channel a, the retraction of the prestressed steel strand is complete.

[0064] Of course, in order to prevent the two operators from rotating the wire-setting roller 2 faster and faster by rotating the rotating rod 6, the friction between the belt 71 and the driven wheel 72 and the driving wheel, as well as the weight of the driven wheel 72 itself, are used to slow down the rotation speed of the clamping roller 22, thereby slowing down the rotation speed of the entire wire-setting roller 2 and improving the stability of the wire-setting roller 2 when rotating.

[0065] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0067] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is 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 "beneath" the second feature can mean that the first feature is 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.

[0068] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A prestressed steel strand feeding device, characterized in that, It includes a support frame (1), a wire roller (2), and a first guide device (3); The support frame (1) is vertically arranged, the wire roller (2) is horizontally arranged and rotatably mounted on the support frame (1), and the prestressed steel strand is sleeved on the outside of the wire roller (2); The first guiding device (3) includes a guiding assembly (31) and two tracks (32) parallel to the axis of the wire roller (2) and arranged opposite to each other. The two tracks (32) are located on the circumferential outer side of the prestressed steel strand. The guiding assembly (31) is mounted on the two tracks (32) in a movable manner along the extension direction of the two tracks (32) to accommodate the swing of the prestressed steel strand. The guiding component (31) has a first feeding channel (a), and the feeding end of the prestressed steel strand passes through the first feeding channel (a) so that the guiding component (31) guides the feeding path of the prestressed steel strand.

2. The prestressed steel strand feeding device as described in claim 1, characterized in that: The guiding assembly (31) includes a movable base (311) and a plurality of first guiding balls (312). The movable seat (311) is movably mounted on the two tracks (32) and located between the two tracks (32). The movable seat (311) has a through hole. A plurality of first guide balls (312) are rotatably fixed on the circumferential sidewall of the through hole. The plurality of first guide balls (312) are arranged circumferentially to form the first feeding channel (a). The outer wall of the plurality of first guide balls (312) can fit against the outer wall of the prestressed steel strand to guide the feeding path of the prestressed steel strand. The movable seat (311) can move along the extension direction of the two tracks (32) as the prestressed steel strands swing during the cutting process.

3. The prestressed steel strand feeding device as described in claim 2, characterized in that: The guide assembly (31) also includes a plurality of rollers (33); Multiple rollers (33) are rotatably embedded on both sides of the movable seat (311), and the movable seat (311) is engaged between two tracks (32) by the multiple rollers (33) so that it can move along the tracks (32).

4. The prestressed steel strand feeding device as described in claim 2, characterized in that: The wire-setting roller (2) includes a roller shaft (21) arranged coaxially and two snap-fit ​​rollers (22). The two snap-fit ​​rollers (22) are respectively fixedly connected to the two ends of the roller shaft (21), and a ball bearing (4) is fixedly sleeved on the outer wall of each snap-fit ​​roller (22). The support frame (1) includes two support plates (11), both of which are vertically arranged and spaced apart in the horizontal direction, and the roller (21) is located between the two support plates (11). Each support plate (11) has a groove (111) on its top and a slot (112) on the inner wall of the groove (111). The two clamping rollers (22) can be placed in the corresponding grooves (111) respectively, and the two ball bearings (4) can be placed in the corresponding slots (112) respectively, so as to mount the wire roller (2) on the support frame (1); The prestressed steel strand is sleeved on the outer wall of the roller (21).

5. The prestressed steel strand feeding device as described in claim 4, characterized in that: The prestressed steel strand feeding device also includes a limiting device (5). The limiting device (5) includes a fixed plate (51), a movable plate (52), and a locking component (53). The fixed plate (51) is fixedly sleeved on the outer wall of the roller shaft (21). The movable plate (52) is movably sleeved on the outer wall of the roller shaft (21) along the axis of the roller shaft (21). The prestressed steel strand is located between the fixed plate (51) and the movable plate (52). The movable plate (52) can cooperate with the fixed plate (51) to clamp the prestressed steel strand, thereby limiting the position of the prestressed steel strand. The locking assembly (53) is provided with a locking end, which passes through the outer peripheral wall of the movable disk (52) and is inserted into the outer wall of the roller (21) to lock the movable disk (52) onto the roller (21).

6. The prestressed steel strand feeding device as described in claim 5, characterized in that: The outer wall of the roller (21) is provided with a long groove (211), the extension direction of the long groove (211) is parallel to the axis of the roller (21), and the end of the long groove (211) away from the fixed plate (51) passes through the end face of the roller (21). Multiple locking holes (212) are provided on the inner wall of the long groove (211) near the axis of the roller (21), and the multiple locking holes (212) are arranged at intervals along the extension direction of the long groove (211). The inner wall of the movable disk (52) is connected to a protrusion (521) corresponding to the long groove (211). The protrusion (521) is placed in the long groove (211) so that the long groove (211) and the protrusion (521) guide the movement trajectory of the movable disk (52). The locking end can pass through the outer peripheral wall of the movable disk (52) and the protrusion (521) in sequence and be inserted into any of the locking holes (212) to lock the movable disk (52) at any position on the long groove (211).

7. The prestressed steel strand feeding device as described in claim 6, characterized in that: The locking assembly (53) includes a locking lever (531), a fixing plate (532), and an elastic element (533). The movable disk (52) has a movable space (522) inside. The locking rod (531) has a locking end facing the roller (21) and can pass through the outer peripheral wall of the movable disk (52) and the protrusion (521) in sequence perpendicular to the axis of the movable disk (52) and be inserted into any of the locking holes (212). The fixed plate (532) and the elastic element (533) are both placed in the moving space (522). The fixed plate (532) is fixedly sleeved on the outer wall of the locking rod (531). The elastic element (533) is sleeved on the outside of the locking rod (531). The two ends of the elastic element (533) respectively abut against the end of the fixed plate (532) away from the locking and the side of the moving space (522) away from the fixed plate (532), so as to provide rebound force and buffer force for the fixed plate (532) and the locking rod (531).

8. The prestressed steel strand feeding device as described in claim 6, characterized in that: The locking components (53) are provided in multiple sets, and the multiple sets of locking components (53) are arranged circumferentially around the axis of the movable disk (52); The long groove (211) is provided in multiple ways, and the multiple long grooves (211) are arranged circumferentially around the axis of the roller shaft (21). The inner wall of the movable disk (52) is fixedly connected with multiple protrusions (521), and the multiple protrusions (521) are arranged circumferentially around the axis of the movable disk (52). The multiple protrusions (521) correspond one-to-one with the multiple long grooves (211).

9. The prestressed steel strand feeding device as described in claim 5, characterized in that: The fixing plate (51) has multiple round holes (511) arranged circumferentially around the axis of the fixing plate (51). The fixed end of the prestressed steel strand can be fixedly inserted into any of the round holes (511) to fix the fixed end of the prestressed steel strand.

10. The prestressed steel strand feeding device as described in claim 4, characterized in that: The prestressed steel strand cutting device also includes a rotating rod (6) and a deceleration assembly (7). The reduction assembly (7) includes a belt (71) and a driven pulley (72); The rotating rod (6) is inserted at one end of the snap-fit ​​roller (22) away from the roller shaft (21), and the rotating rod (6) is coaxial with the snap-fit ​​roller (22). The rotating rod (6) can drive the wire placement roller (2) to rotate around its own axis to release and retract the prestressed steel strand. The snap-fit ​​roller (22) is provided with a drive wheel, and the driven wheel (72) is rotatably mounted on the outer wall of the support plate (11). The axis of the driven wheel (72) is parallel to the axis of the snap-fit ​​roller (22), and the driven wheel (72) is located on one side of the rotating rod (6). The belt (71) is sleeved on the driven wheel (72) and the drive wheel.

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