A blanking device for prestressed steel strand blanking

Abstract

The present application relates to prestressed steel strand blanking technical field, especially in a kind of blanking device for prestressed steel strand blanking.The present application includes protective frame and first guide device;Protective frame is the right four-prism platform frame, prestressed steel strand includes storage state and blanking state: when being in storage state, prestressed steel strand is disc-shaped, and it is placed from top to bottom in the inside of protective frame;Prestressed steel strand is provided with blanking end, when being in blanking state, blanking end can cross protective frame;First guide device includes two first guide wheels, two first guide wheels can be rotatably mounted on the top of protective frame;First line channel is formed between two first guide wheels.The present application can reduce the harm of prestressed steel strand to operator by setting protective frame, can greatly reduce the wear rate of prestressed steel strand by first guide wheel, ensure the product performance of prestressed steel strand.

Description

Technical Field

[0001] This invention relates to the field of prestressed steel strand cutting technology, and more particularly to a cutting device for prestressed steel strand cutting. Background Technology

[0002] Prestressed steel strands are stranded steel cables composed of 2, 3, 7, or 19 high-strength steel wires, and undergo stress-relieving treatment (stabilization treatment), suitable for prestressed concrete and similar applications. Prestressed steel strands include bonded prestressed steel strands and unbonded prestressed steel strands. Bonded prestressed steel strands refer to prestressed steel strands that expand and contract freely during construction without bonding with the surrounding retarding adhesive. After construction, the prestressing tendons bond to the surrounding concrete through the cured retarding adhesive within a predetermined period. Unbonded prestressed steel strands refer to prestressed concrete where the prestressed steel strands expand and contract freely without bonding with the surrounding concrete or cement paste. Unbonded prestressed steel strands are coated with grease along their entire length and protected by a plastic tube.

[0003] With the technological development and widespread application of slow-bonding prestressed steel strands, their application scenarios cover railways, highway bridges, industrial and civil buildings, municipal engineering, water conservancy, and other special projects. The construction site environment is complex and ever-changing. On the one hand, due to the extremely high tensile strength of the prestressed steel strands, a large tension needs to be applied during the coiling process, which makes them prone to sudden breakage when the packaging is removed, thus posing a risk of injury to operators and reducing their safety. On the other hand, the PE sheath (polyethylene sheath) of the prestressed steel strands is relatively fragile, especially during material cutting operations. The PE sheath is easily damaged due to sliding friction with related equipment, which directly affects the product performance of the prestressed steel strands.

[0004] Therefore, there is an urgent need for a feeding device for prestressed steel strands that can not only prevent workers from being injured when unpacking the prestressed steel strands, but also ensure the product performance of the prestressed steel strands and reduce wear. Summary of the Invention

[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 feeding device for prestressed steel strands, which solves the technical problems of easy injury to operators when unpacking prestressed steel strands and easy wear of prestressed steel strands.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] This invention provides a feeding device for prestressed steel strands, comprising a protective frame and a first guiding device. The protective frame is an upright frustum-shaped frame, and the prestressed steel strands have a stored state and a feeding state. In the stored state, the prestressed steel strands are disc-shaped and placed inside the protective frame from top to bottom, with the axis of the prestressed steel strands always extending vertically. The prestressed steel strands are provided with a feeding end, which, in the feeding state, can pass over the protective frame for feeding. The first guiding device includes two first guide wheels, both of which are rotatably mounted on the top of the protective frame. A first wire-carrying channel is formed between the two first guide wheels, and the feeding end can pass through the first wire-carrying channel so that the first wire-carrying channel provides guidance for the feeding path of the feeding end.

[0010] Preferably, the protective frame includes four sets of upper horizontal bar assemblies, four vertical bars, four sets of lower horizontal bar assemblies, and a load-bearing assembly; the four vertical bars are all inclined toward the axial direction of the prestressed steel strand, and each pair of adjacent vertical bars are detachably connected by a set of upper horizontal bar assemblies and a set of lower horizontal bar assemblies to form a trapezoidal structure inclined toward the axial direction of the prestressed steel strand; the load-bearing assembly is fixedly connected to the bottom of the four vertical bars for supporting the prestressed steel strand; the first guide device is fixedly installed on the top of a set of upper horizontal bar assemblies.

[0011] Preferably, the four sets of upper crossbar assemblies and the four sets of lower crossbar assemblies have the same structure, each including a crossbar body and two sets of snap-fit ​​assemblies symmetrically arranged at both ends of the crossbar body; the two sets of snap-fit ​​assemblies have the same structure, each including an inclined plate and a snap-fit ​​member; the inclined plate is fixedly installed at one end of the crossbar body; the inner wall of one end of the snap-fit ​​member is fixedly connected to the outward side wall of the corresponding inclined plate to form a U-shaped snap-fit ​​structure, the snap-fit ​​structure can snap-fit ​​with the outer wall of the corresponding vertical bar, so that the upper crossbar assembly and the lower crossbar assembly can detachably connect two adjacent vertical bars.

[0012] Preferably, the snap-fit ​​assembly further includes a rib; the rib is inclined, and one end of the rib is fixedly connected to the bottom of the crossbar body, and the other end is fixedly connected to the outer wall of the bottom of the inclined plate facing the crossbar body, for strengthening the connection between the inclined plate and the crossbar body.

[0013] Preferably, the bearing assembly includes a horizontally arranged bearing plate, a fixed plate, and four connecting rods; the bearing plate is located at the center of the bottom of the protective frame, one end of each of the four connecting rods is fixedly connected to the outer wall of the bearing plate, and the other end is fixedly connected to the bottom of each of the four vertical rods; the fixed plate is coaxial with the bearing plate and inserted into the top of the bearing plate, and is used to support the prestressed steel strand.

[0014] Preferably, the feeding device further includes a vertically arranged positioning post; the disc-shaped prestressed steel strand is sleeved on the outside of the positioning post; the top of the fixing disc has a circular groove, the bottom of the positioning post is placed in the circular groove, the bottom outer wall of the positioning post has multiple male buckles along its circumference, and the inner wall of the circular groove is connected with multiple female buckles along its circumference. The multiple male buckles can be engaged with the multiple female buckles one by one to engage the positioning post in the circular groove; the prestressed steel strand is sleeved on the outside of the positioning post.

[0015] Preferably, the feeding device further includes a second guiding device; the second guiding device is disposed on the top of the positioning column and can rotate around the axis of the positioning column; the second guiding device includes two rotatable second guiding wheels, and a second wire routing channel is formed between the two second guiding wheels; the feeding end of the prestressed steel strand can pass through the second wire routing channel and the first wire routing channel in sequence to provide guidance for the feeding path of the feeding end.

[0016] Preferably, the second guiding device further includes a rotating disk and a connecting plate. The rotating disk is coaxially arranged with the positioning post and is rotatably mounted on the top of the positioning post. One end of the connecting plate is hinged to the top of the rotating disk, so that the connecting plate has a guiding position in a horizontal state and a storage position in a vertical state. The other end of the connecting plate is connected to two second guide wheels. The rotating disk, the connecting plate, and the two second guide wheels can rotate around the axis of the positioning post as the prestressed steel strand is unloaded, so as to guide the unloading path of the prestressed steel strand.

[0017] Preferably, the second guiding device further includes a first locking component and a second locking component; both the first locking component and the second locking component are fixedly installed on the top of the rotating disk; the first locking component is used to lock the connecting plate in the guiding position; the second locking component is used to lock the connecting plate in the storage position.

[0018] Preferably, both the first guide wheel and the second guide wheel are made of nylon.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this invention are:

[0021] This invention discloses a feeding device for prestressed steel strands. By setting up a protective frame and placing the prestressed steel strands inside the frame, it can circumferentially constrain the disc-shaped prestressed steel strands. Specifically, when the packaging is removed, the prestressed steel strands spring open under their own tension, and the springing prestressed steel strands collide with the protective frame, thus preventing the prestressed steel strands from injuring operators and improving operator safety. Furthermore, by setting two first guide wheels, which are rotatably mounted on the top of the protective frame and form a first cable routing channel, it not only provides precise guidance for threading the prestressed steel strands but also converts existing sliding friction into rolling friction, greatly reducing the frictional force of the prestressed steel strands during feeding. This avoids scratching and damage to the PE sheath, effectively protecting the structural integrity of the PE sheath and reducing the wear rate of the prestressed steel strands. This invention reduces the risk of injury to operators from prestressed steel strands by setting up a protective frame, and significantly reduces the wear rate of prestressed steel strands by using the first guide wheel, thus ensuring the product performance of prestressed steel strands. Attached Figure Description

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

[0023] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the protective frame of a feeding device for prestressed steel strands according to the present invention.

[0024] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the upper crossbar assembly and the first guide device of the feeding device for prestressed steel strand cutting according to the present invention.

[0025] Figure 4 This is a schematic diagram of the overall three-dimensional structure of the lower crossbar assembly of a feeding device for prestressed steel strands according to the present invention.

[0026] Figure 5 This is a three-dimensional schematic diagram of the overall structure of the reinforcing plate of a feeding device for prestressed steel strand cutting according to the present invention;

[0027] Figure 6 This is a three-dimensional disassembled structural diagram of the fixing plate, positioning column, and second guide device of a feeding device for prestressed steel strand cutting according to the present invention.

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

[0029] Figure 8 This is a schematic diagram of the overall front view of the first guide device of a feeding device for prestressed steel strand cutting according to the present invention.

[0030] Figure 9 This is a top view schematic diagram of the overall structure of the second guide wheel and the second mounting plate of a feeding device for prestressed steel strands according to the present invention.

[0031] [Explanation of Labels in the Attached Image]

[0032] 1: Protective frame; 11: Upper crossbar assembly; 111: Crossbar body; 112: Snap-fit ​​assembly; 1121: Inclined plate; 1122: Snap-fit ​​piece; 1123: First fixing pin; 1124: Second fixing pin; 1125: Rib; 12: Vertical bar; 13: Lower crossbar assembly; 14: Bearing assembly; 141: Bearing plate; 142: Fixing plate; 143: Connecting rod; 15: Reinforcing plate; 151: Plate body; 152: Snap-fit ​​plate; 16: Third fixing pin; 2: First guide device; 21: First guide wheel; 22: First mounting plate; 3: Positioning post; 4: Male buckle; 5: Female buckle; 6: Second guide device; 61: Rotating disk; 62: Connecting plate; 63: Second guide wheel; 64: Second mounting plate; 65: First locking assembly; 651: First fixing seat; 652: First hinge plate; 653: First locking pin; 66: Second locking assembly; 661: Second fixing seat; 662: Second hinge plate; 663: Second locking pin; 664: Base plate; 67: Connecting frame; a: First wiring channel; b: Second wiring channel. Detailed Implementation

[0033] 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.

[0034] Example

[0035] like Figure 1 As shown, a feeding device for prestressed steel strand cutting in this embodiment includes a protective frame 1 and a first guide device 2.

[0036] Specifically, the protective frame 1 is an upright frustum-shaped frame, and the prestressed steel strands have two states: a stored state and a unloaded state. In the stored state, the prestressed steel strands are in a disc shape and are placed inside the protective frame 1 from top to bottom, with the axis of the disc-shaped prestressed steel strands always extending vertically. The prestressed steel strands are provided with an unloading end, which can extend beyond the protective frame 1 for unloading when in the unloading state.

[0037] The first guiding device 2 includes two first guide wheels 21. Preferably, both first guide wheels 21 are horizontally placed and arranged at intervals in the vertical direction, and both are rotatably mounted on the top of the protective frame 1. The two first guide wheels 21 form a first wiring channel a, through which the unloading end can pass, such as... Figure 8 As shown, the first routing channel a provides guidance for the unloading path at the unloading end.

[0038] By setting up a protective frame 1 and placing the prestressed steel strands inside it, the prestressed steel strands can be circumferentially constrained. When the packaging is removed, the prestressed steel strands spring open under their own tension, colliding with the protective frame 1. This prevents the prestressed steel strands from injuring operators, thus improving operator safety. Furthermore, by setting up two first guide wheels 21, spaced vertically to form a first cable routing channel a, not only is precise guidance provided for threading the prestressed steel strands, but the existing sliding friction is converted into rolling friction. This significantly reduces the friction force during release and retraction, preventing scratches and damage to the PE sheath, effectively protecting the structural integrity of the PE sheath, and reducing the wear rate of the prestressed steel strands.

[0039] Preferably, both first guide wheels 21 are made of nylon. Compared with metal rollers, nylon has a lower coefficient of friction and good flexibility. When in contact with the PE sheath outside the prestressed steel strand, it can avoid scratching and squeezing damage to the PE sheath caused by the metal material, effectively protect the structural integrity of the PE sheath, ensure the product performance of the prestressed steel strand, and further reduce the wear rate of the prestressed steel strand.

[0040] Furthermore, such as Figure 2As shown, the protective frame 1 includes four sets of upper horizontal bar assemblies 11, four vertical bars 12, four sets of lower horizontal bar assemblies 13, and a load-bearing assembly 14. The four vertical bars 12 are all inclined towards the axial direction of the prestressed steel strand. Each pair of adjacent vertical bars 12 is detachably connected by a set of upper horizontal bar assemblies 11 and a set of lower horizontal bar assemblies 13 to form a trapezoidal structure inclined towards the axial direction of the prestressed steel strand. This allows the protective frame 1 to be placed more stably on the ground, improving its resistance to lateral loads and preventing it from tipping over due to external forces.

[0041] Meanwhile, the four vertical rods 12 can limit the loose prestressed steel strands. That is, when the packaging of the prestressed steel strands is just unpacked, the tension of the prestressed steel strands will cause them to loosen. The loose prestressed steel strands will directly collide with the four vertical rods 12, thus preventing injury to the operators and greatly improving the safety of the operators.

[0042] Furthermore, the upper crossbar assembly 11 and the lower crossbar assembly 13 are detachably connected to two adjacent vertical bars 12, enabling on-site assembly of the protective frame 1. This makes the protective frame 1 more convenient to transport and disassemble, allowing it to be transported to any location and disassembled, greatly improving the utilization rate, flexibility, and applicability of the protective frame 1.

[0043] The load-bearing component 14 is fixedly connected to the bottom of the four vertical bars 12, so that the load-bearing component 14, the four vertical bars 12, the four sets of upper horizontal bar components 11 and the four sets of lower horizontal bar components 13 form an integral structure to fully bear the prestressed steel strands, so that the weight of the prestressed steel strands is entirely applied to the load-bearing component 14, thereby making the force direction of the protective frame 1 the direction of the weight of the steel strands, thus firmly pressing the protective frame 1 to the ground, preventing the protective frame 1 from tipping over due to external forces, and further improving the stability of the protective frame 1.

[0044] The first guide device 2 is fixedly installed on the top of a set of upper crossbar assemblies 11 to guide the threading of prestressed steel strands and the feeding direction of prestressed steel strands.

[0045] Preferably, the inclination angle of the vertical rod 12 is between 80° and 85°, so as to ensure the structural stability of the protective frame 1 and also ensure that the top of the protective frame 1 has sufficient opening, so as to improve the structural strength of the protective frame 1 without increasing the volume of the protective frame 1, and at the same time, allow the disc-shaped prestressed steel strand to enter the protective frame 1.

[0046] It should be noted that, in order to prevent interference between two adjacent sets of upper crossbar assemblies 11 and two adjacent sets of lower crossbar assemblies 13, the two adjacent sets of upper crossbar assemblies 11 are staggered vertically, and the two adjacent sets of lower crossbar assemblies 13 are staggered vertically, thereby preventing interference between the two adjacent sets of upper crossbar assemblies 11 and two adjacent sets of lower crossbar assemblies 13 without affecting the strength of the protective frame 1.

[0047] Furthermore, such as Figures 2-4 As shown, the four sets of upper crossbar assemblies 11 and the four sets of lower crossbar assemblies 13 have the same structure, each including a crossbar body 111 and a snap-fit ​​assembly 112 symmetrically arranged at both ends of the crossbar body 111.

[0048] The crossbar body 111 has a hollow structure to reduce its weight and facilitate disassembly and handling by operators. The two sets of snap-fit ​​components 112 have identical structures, each including a ramp 1121 and a snap-fit ​​element 1122. The ramp 1121 is fixedly installed at one end of the crossbar body 111, with its top surface flush with the top surface of the crossbar body 111. The side of the ramp 1121 away from the crossbar body 111 can fit against the side of the vertical bar 12 facing the crossbar body 111. The inner wall of one end of the snap-fit ​​1122 is fixedly connected to the outward side wall of its corresponding inclined plate 1121 to form a U-shaped snap-fit ​​structure. The snap-fit ​​structure can snap onto the outer wall of its corresponding vertical bar 12. The crossbar body 111, inclined plate 1121 and snap-fit ​​1122 are detachably installed on two adjacent vertical bars 12 by the first fixing pin 1123 and the second fixing pin 1124, thereby realizing the detachable connection between the upper crossbar assembly 11 and the lower crossbar assembly 13 and the two adjacent vertical bars 12.

[0049] It should be noted that, for the upper crossbar assembly 11, the first fixing pin 1123 passes sequentially through one end of its corresponding vertical bar 12, inclined plate 1121, and crossbar body 111 to install the inclined plate 1121 and crossbar body 111 between the two vertical bars 12. The second fixing pin 1124 passes through the vertical bar 12 and the snap-fit ​​1122 to install the snap-fit ​​1122 onto the vertical bar 12, thereby realizing the installation of a set of upper crossbar assemblies 11 onto two adjacent vertical bars 12, which is simple and quick. The lower crossbar assembly 13 has the same structure as the upper crossbar and is also installed onto two adjacent vertical bars 12 in the same way, so it will not be described in detail here. By setting the inclined plate 1121, which can adapt to the tilt angle of the vertical bar 12 and fit against the vertical bar 12, the crossbar body 111 and the vertical bar 12 can be installed better and more stably. Furthermore, the first fixing pin 1123 ensures the stability of the connection between the vertical rod 12 and the inclined plate 1121 and the horizontal rod body 111. In addition, it can improve the connection efficiency between the vertical rod 12 and the inclined plate 1121 and the horizontal rod body 111, thereby improving the installation efficiency of the entire protective frame 1.

[0050] Meanwhile, the snap-fit ​​component 1122 is an L-shaped plate, which forms a U-shaped snap-fit ​​structure with the inclined plate 1121. The opening of the U-shape faces the corresponding vertical rod 12, and the inner wall of the U-shape can fit against the outer wall of the vertical rod 12 to position the installation position of the upper horizontal bar assembly 11 or the lower horizontal bar assembly 13, ensuring that the upper horizontal bar assembly 11 and the lower horizontal bar assembly 13 can be stably installed with the vertical rod 12. The snap-fit ​​component 1122 and the vertical rod 12 are fixed by the second fixing pin 1124, thereby improving the installation stability between the upper horizontal bar assembly 11 and the lower horizontal bar assembly 13 and the vertical rod 12, preventing rotation when only the inclined plate 1121 and the first fixing pin 1123 are used for fixing, and further improving the installation stability of the protective frame 1.

[0051] The first guiding device 2 also includes two first mounting plates 22. The two first mounting plates 22 are arranged vertically and located at both ends of the two first guide wheels 21. The bottom of the two first mounting plates 22 is fixedly installed on the top of the crossbar body 111. The two first guide wheels 21 are rotatably connected to the two first mounting plates 22, so that the two first guide wheels 21 can be installed horizontally and arranged vertically to form a first wire routing channel a, thereby enabling the two first guide wheels 21 to guide the feeding of prestressed steel strands.

[0052] Furthermore, the snap-fit ​​assembly 112 also includes a rib 1125. The rib 1125 is inclined, and one end of the rib 1125 is fixedly connected to the bottom of the crossbar body 111, while the other end is fixedly connected to the outer wall of the bottom of the inclined plate 1121 facing the crossbar body 111, so as to form a stable triangular structure with the inclined plate 1121 and the crossbar body 111. This structure is used to strengthen the connection between the inclined plate 1121 and the crossbar body 111, thereby improving the connection rigidity between the inclined plate 1121 and the crossbar body 111, preventing the crossbar body 111 and the inclined plate 1121 from deforming or breaking under external impact, and improving the durability and safety of the entire protective frame 1.

[0053] Furthermore, such as Figure 1 and Figure 2 As shown, the protective frame 1 also includes five reinforcing plates 15. Each reinforcing plate 15 is inclined relative to the vertical direction, and its two ends are respectively engaged with two crossbar bodies 111 in the upper crossbar assembly 11 and the lower crossbar assembly 13 located in the same trapezoidal structure by a third fixing pin 16, for reinforcing the protective frame 1. Figure 5As shown, each reinforcing plate 15 includes a plate body 151 and four snap-fit ​​plates 152. The four snap-fit ​​plates 152 are vertically connected to the plate body 151. Moreover, every two snap-fit ​​plates 152 form a group, with one group of snap-fit ​​plates 152 located at the top of the plate body 151 and the other group of snap-fit ​​plates 152 located at the bottom of the plate body 151. They can be snapped into the crossbar bodies 111 in the upper crossbar assembly 11 and the lower crossbar assembly 13, respectively. The reinforcing plate 15 is fixed to the crossbar bodies 111 in the upper crossbar assembly 11 and the lower crossbar assembly 13 by the insertion of the third fixing pin 16, so as to strengthen the protective frame 1 and improve the structural stability and rigidity of the protective frame 1, as well as its ability to resist vertical and lateral deformation. Of course, the reinforcing plates 15 are not limited to four or five, etc. To ensure the structural stability of the protective frame 1, there can be more than five reinforcing plates 15, and the number is not limited here.

[0054] Furthermore, such as Figure 1 and Figure 2 As shown, the supporting assembly 14 includes a horizontally arranged supporting plate 141, a fixed plate 142, and four connecting rods 143. The supporting plate 141 is located at the center of the bottom of the protective frame 1. One end of each of the four connecting rods 143 is fixedly connected to the outer wall of the supporting plate 141, and the other end is fixedly connected to the bottom of each of the four vertical rods 12. The fixed plate 142 is coaxial with the supporting plate 141 and is inserted into the top of the supporting plate 141 to support the prestressed steel strands. Multiple posts are provided at the top of the supporting plate 141, and correspondingly, slots are provided at the bottom of the fixed plate 142. The fixed plate 142 is inserted through the cooperation of the slots and posts, facilitating the installation of the fixed plate 142 and the supporting plate 141, while also preventing the fixed plate 142 from shifting.

[0055] Furthermore, such as Figure 1 and Figure 6 As shown, the feeding device also includes a vertically arranged positioning column 3. A disc-shaped prestressed steel strand is sleeved on the outside of the positioning column 3. Figure 6As shown, the top of the fixing plate 142 has a circular groove, and the bottom of the positioning post 3 is placed in the circular groove. Multiple male buckles 4 are provided along the circumference of the outer wall of the bottom of the positioning post 3, and multiple female buckles 5 are connected along the circumference of the inner wall of the circular groove. The multiple male buckles 4 can engage with the multiple female buckles 5 one-to-one, thus securing the positioning post 3 within the circular groove. The outer walls of the multiple male buckles 4 fit against the inner wall of the circular groove, and the outer walls of the multiple female buckles 5 facing the positioning post 3 fit against the outer wall of the positioning post 3, thereby positioning the positioning post 3 so that it is coaxially aligned with the circular groove. Furthermore, when it is necessary to fix the positioning post 3 to the circular groove, it is only necessary to first offset the corresponding male buckles 4 and female buckles 5, and then rotate the positioning post 3 so that the corresponding male buckle 4 inserts into the groove of the female buckle 5, thereby achieving the engagement between the positioning post 3 and the fixing plate 142. It should be noted that the male buckle 4 is a raised strip, and the female buckle 5 is an L-shaped block. The opening of the L-shaped block faces the bottom wall of the circular groove, and the raised strip can be inserted into the opening of the L-shaped block, so that the male buckle 4 and the female buckle 5 form a snap-fit ​​structure, making the snap-fit ​​between the positioning post 3 and the fixing plate 142 more convenient and quick. Preferably, the interior of the positioning post 3 is a hollow structure, thereby reducing the weight of the positioning post 3 itself and facilitating the handling and disassembly by the operator.

[0056] Furthermore, such as Figure 1 , Figure 6 and Figure 7As shown, the feeding device also includes a second guide device 6. The second guide device 6 includes a rotating disk 61, a connecting plate 62, two second guide wheels 63, and two second mounting plates 64. The rotating disk 61 is coaxially arranged with the positioning post 3, and the rotating disk 61 is rotatably mounted on the top of the positioning post 3. One end of the connecting plate 62 is hinged to the top of the rotating disk 61, so that the connecting plate 62 has a horizontal guiding position and a vertical storage position. The other end of the connecting plate 62 is fixedly connected to the two second mounting plates 64 through a connecting bracket 67. Among them, two ear plates are fixedly installed on the top of the rotating disk 61, and one end of the connecting plate 62 is hinged to the two ear plates through a horizontally arranged hinge shaft. Two second mounting plates 64 are arranged opposite each other along the length of the connecting plate 62. Two second guide wheels 63 are rotatably mounted between the two second mounting plates 64. The two second guide wheels 63 and the two second mounting plates 64 are fixed by a rotating shaft, that is, a rotating shaft passes sequentially through one corresponding second mounting plate 64, the second guide wheel 63, and the other second mounting plate 64, thereby fixing the two second mounting plates 64 and the second guide wheels 63. This allows the axes of the two second guide wheels 63 to extend along the length of the connecting plate, thus ensuring an effective guiding path for the release and retraction of the prestressed steel strand, further improving the guiding effect on the prestressed steel strand. The axes of both second guide wheels 63 extend along the length of the connecting plate 62, forming a second cable routing channel b between the two second guide wheels 63. Figure 9 As shown, the unloading end can pass through the second wiring channel b to provide guidance for the installation path of the prestressed steel strand and limit the prestressed steel strand, so that the prestressed steel strand can always be released and retracted along the second wiring channel b, avoiding deviation or twisting during the release and retraction process, thereby further reducing the damage rate of the prestressed steel strand and preventing it from twisting due to its own tension, which would cause the outer PE sheath to crack.

[0057] It should be noted that when the prestressed steel strand is retracted, the operator needs to manually push the released prestressed steel strand to retract it and rewind it around the outside of the positioning post 3. Because the prestressed steel strand itself has tension, during the retraction process, since it passes through the second cable routing channel b, the second guide device 6 will rotate around the axis of the positioning post 3 as the prestressed steel strand is rewound around the outside of the positioning post 3. This ensures that the second guide device 6 always provides guidance for the retraction of the prestressed steel strand, thus enabling the second guide device 6 to consistently guide the release and retraction of the prestressed steel strand. Of course, this embodiment only describes the retraction method of the prestressed steel strand. The connecting plate 62 can also be rotated to wind the prestressed steel strand around the positioning post 3, but due to the tension inherent in the prestressed steel strand, rotating the connecting plate 62 is not recommended to avoid injury to the operator.

[0058] In other words, the rotating disk 61, connecting plate 62, two second guide wheels 63, and two second mounting plates 64 can rotate around the axis of the positioning post 3 as the prestressed steel strand is released and retracted, guiding the release and retraction path of the prestressed steel strand. This ensures that the prestressed steel strand is always released and retracted around the axis of the positioning post 3, preventing the prestressed steel strand from twisting or shifting due to tension during release and retraction, thus straightening the prestressed steel strand. The two second guide wheels 63 are made of nylon and serve the same function as the first guide wheel 21, preventing damage to the PE sheath outside the prestressed steel strand.

[0059] Furthermore, such as Figure 6 and Figure 7 As shown, the second guiding device 6 also includes a first locking component 65 and a second locking component 66. Both the first locking component 65 and the second locking component 66 are fixedly installed on the top of the rotating disk 61. The first locking component 65 is horizontally positioned to lock the connecting plate 62 in the guiding position, allowing the two second guide wheels 63 to guide the prestressed steel strand and prevent deviation or twisting of the prestressed steel strand. The second locking component 66 is vertically positioned to lock the connecting plate 62 in the storage position, thus allowing the connecting plate 62 to be vertically positioned. This enables the disc-shaped prestressed steel strand to be mounted on the outside of the positioning column 3 using equipment such as a crane, preventing interference between the second guiding device 6 and the disc-shaped prestressed steel strand. Through the first locking component 65 and the second locking component 66, the connecting plate 62 can be stably placed in the guiding and storage positions, preventing the connecting plate 62 from arbitrarily changing position due to its hinge with the rotating disk 61, further improving the stability of the second guiding device 6.

[0060] Specifically, such as Figure 7As shown, the first locking assembly 65 includes a first fixed base 651, a first hinge plate 652, and a first locking pin 653. The first fixed base 651 is fixedly mounted on the top of the rotating disk 61. The first fixed base 651 is horizontally arranged in a U-shape with its groove opening facing upwards, for the connecting plate 62 in the guide position to enter the first fixed base 651. One end of the first hinge plate 652 is hinged to one end of the first fixed base 651, and the other end is fixed to the other end of the first fixed base 651 by the first locking pin 653, so as to lock the connecting plate 62 in the groove of the first fixed base 651, thereby locking the connecting plate 62 in the guide position. After the disc-shaped prestressed steel strand is sleeved on the outside of the positioning post 3, the connecting plate 62 can be placed in the groove of the first fixing seat 651. The groove of the first fixing seat 651 is then sealed by the first hinge plate 652 and the first locking pin 653, so that the connecting plate 62 can be stably placed in the groove of the first fixing seat 651 and can be quickly locked to prevent the connecting plate 62 from shaking in the guide position. At the same time, to unlock the connecting plate 62, simply remove the first locking pin 653 to unlock the connecting plate 62, so as to achieve quick locking and unlocking of the connecting plate 62.

[0061] The second locking assembly 66 includes a second fixing seat 661, a second hinge plate 662, a second locking pin 663, and a base plate. The base plate is vertically fixedly mounted on the top of the rotating disk 61, and the base plate is located on the outer side of the connecting plate 62 along its length. The second fixing seat 661 is fixedly mounted on the top of the side wall of the base plate 664 facing the connecting plate 62. The second fixing seat 661 is a vertically arranged U-shaped recess with its groove opening facing the connecting plate 62, for the connecting plate 62 in the storage position to enter the second fixing seat 661. One end of the second hinge plate 662 is hinged to one end of the second fixed base 661, and the other end is fixed to the other end of the second fixed base 661 by the second locking pin 663, so as to lock the connecting plate 62 in the groove of the second fixed base 661, thereby locking the connecting plate 62 in the storage position. This ensures that the connecting plate 62 is stably locked in the groove of the second fixed base 661 by the second hinge plate 662 and the second locking pin 663. This prevents the connecting plate 62, the second mounting plate 64 and the second guide wheel 63 from interfering with the prestressed steel strand during the process of the prestressed steel strand being sleeved on the outside of the positioning column 3 and when the prestressed steel strand is removed after construction. It also prevents the connecting plate 62, the second mounting plate 64 and the second guide wheel 63 from shaking, thus improving the stability of the connecting plate 62, the second mounting plate 64 and the second guide wheel 63 in the non-construction state.

[0062] Based on the above structure, the installation principle of a feeding device for prestressed steel strand cutting in this embodiment is as follows:

[0063] First, weld all four connecting rods 143 to the outer wall of the carrier plate 141. Then, align the slots on the fixing plate 142 with the pins on the carrier plate 141 and insert the fixing plate 142 into the carrier plate 141. Next, place the bottom of the positioning pin 3 into the circular groove on the fixing plate 142 and rotate the positioning pin 3 so that the male buckle 4 on the positioning pin 3 engages with the female buckle 5 on the circular groove to fix the positioning pin 3 in the circular groove. Rotate the rotating plate 61 rotatably to the top of the positioning pin 3 via ball bearings. At the same time, hinge one end of the connecting plate 62 to the top of the rotating plate 61, and connect the other end to the second mounting plate 64 via the connecting bracket 67. Rotate two second guide wheels 63 between the two second mounting plates 64 to form the second wiring channel b. Meanwhile, fix the first locking assembly 65 and the second locking assembly 66 to the top of the rotating plate 61.

[0064] Then, the four vertical rods 12 are welded one by one to the ends of the four connecting rods 143 furthest from the bearing plate 141. After welding, a set of lower horizontal rod assemblies 13 are installed on two adjacent vertical rods 12. That is, the two inclined plates 1121 and two snap-fit ​​pieces 1122 in the lower horizontal rod assembly 13 are snapped onto the two vertical rods 12, and then fixed by the first fixing pin 1123 and the second fixing pin 1124, thus completing the installation of the lower horizontal rod assembly 13. The other three sets of lower horizontal rod assemblies 13 are installed in the same way as described above, and will not be described in detail here. Thus, the four sets of lower horizontal rod assemblies 13 are connected with the four vertical rods 12 to form an integral structure. Then, the four sets of upper horizontal rod assemblies 11 are installed. The operation steps of the four sets of upper horizontal rod assemblies 11 are the same as those of the lower horizontal rod assemblies 13, and will not be described in detail here. After the four sets of upper horizontal rod assemblies 11 are installed, the reinforcing plate 15 is installed on the two horizontal rod bodies 111 between the two adjacent vertical rods 12 by the third fixing pin 16. The bottom of the two first mounting plates 22 in the first guide device 2 are fixedly installed on the top of the crossbar body 111 in a set of upper crossbar assemblies 11, so that the two first guide wheels 21 located between the two first mounting plates 22 can rotate and form the first wire routing channel a, thus completing the installation of the unloading device.

[0065] In the initial state, the connecting plate 62 is locked in the groove of the second fixed seat 661 by the second fixed seat 661 and the second hinge plate 662, and is in a vertical position. Then, the disc-shaped prestressed steel strand is hoisted and sleeved on the outside of the positioning column 3. Next, the connecting plate 62 is released from the locking of the second fixed seat 661 and the second hinge plate 662, and the connecting plate 62 is placed in the groove of the first fixed seat 651. The first hinge plate 652 locks the connecting plate in the groove of the first fixed seat 651. At this time, the connecting plate 62 is in a horizontal position, thus completing the preparation before the unloading device unloads the material.

[0066] The feeding principle of the feeding device for prestressed steel strand cutting in this embodiment is as follows:

[0067] When feeding is required, the connecting plate 62 is placed in the groove of the first fixed seat 651, and the groove of the first fixed seat 651 is closed by the first locking pin 653 and the first hinge plate 652, locking the connecting plate 62 in the guide position. Then, the operator unpacks the coiled prestressed steel strand, and the prestressed steel strand unfurls due to its own tension and collides with the vertical rod 12. After the prestressed steel strand stabilizes, its feeding end is passed sequentially through the second wiring channel b and the first wiring channel a (preferably, the outer wall of the prestressed steel strand is in contact with the inner wall of the second wiring channel b and the first wiring channel a). As the feeding end is released and retracted, the two first guide wheels 21 and the two second guide wheels 63 rotate around their own axes. In addition, during the release and retraction of the feeding end, the prestressed steel strand also drives the second guide device 6 to rotate around the axis of the positioning post 3 to adapt to the feeding and retraction process of the prestressed steel strand, thereby preventing the prestressed steel strand from deviating or twisting.

[0068] After the material is unloaded, when the prestressed steel strand needs to be removed, first rewrap the prestressed steel strand around the outside of the positioning post 3 and fix it into a disc shape using straps or similar means. Then unlock the first fixing seat 651 and remove the connecting plate 62 from the groove of the first fixing seat 651. Then place the connecting plate 62 into the groove of the second fixing seat 661 and rotate the second hinge plate 662 so that the second hinge plate 662 closes the groove of the second fixing seat 661. Then fix the second hinge plate 662 with the second locking pin 663, thereby stably locking the connecting plate 62 in the storage position. At this time, the connecting plate 62 is set vertically. Finally, use a crane to remove the disc-shaped prestressed steel strand from the unloading device from bottom to top.

[0069] In the description of this invention, 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 invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0070] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0071] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" 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," or "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.

[0072] 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.

[0073] 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 feeding device for prestressed steel strand cutting, characterized in that, It includes a protective frame (1) and a first guide device (2); The protective frame (1) is an upright truncated quadrangular frame. The prestressed steel strand includes a storage state and a cutting state: when in the storage state, the prestressed steel strand is in the shape of a disc and is placed inside the protective frame (1) from top to bottom. The axis of the disc-shaped prestressed steel strand always extends vertically. The prestressed steel strand is provided with a cutting end. When in the cutting state, the cutting end can pass through the protective frame (1) for cutting. The first guide device (2) includes two first guide wheels (21), both of which are rotatably mounted on the top of the protective frame (1); A first wiring channel (a) is formed between the two first guide wheels (21), and the unloading end can pass through the first wiring channel (a) so that the first wiring channel (a) provides guidance for the unloading path of the unloading end; The feeding device also includes a vertically arranged positioning column (3); The disc-shaped prestressed steel strand is sleeved on the outside of the positioning post (3); The feeding device also includes a second guiding device (6). The second guide device (6) is disposed on the top of the positioning post (3) and can rotate around the axis of the positioning post (3); The second guide device (6) includes two rotatable second guide wheels (63), and a second wiring channel (b) is formed between the two second guide wheels (63); The feeding end of the prestressed steel strand can pass through the second wiring channel (b) and the first wiring channel (a) in sequence to provide guidance for the feeding path of the feeding end; The second guide device (6) further includes a rotating disk (61) and a connecting plate (62). The rotating disk (61) is coaxially arranged with the positioning post (3), and the rotating disk (61) is rotatably mounted on the top of the positioning post (3). One end of the connecting plate (62) is hinged to the top of the rotating disk (61), so that the connecting plate (62) has a horizontal guiding position and a vertical storage position; the other end of the connecting plate (62) is connected to two second guide wheels (63). The rotating disk (61), the connecting plate (62), and the two second guide wheels (63) can rotate around the axis of the positioning column (3) as the prestressed steel strand is unloaded, so as to guide the unloading path of the prestressed steel strand.

2. The feeding device for prestressed steel strand cutting as described in claim 1, characterized in that: The protective frame (1) includes four sets of upper horizontal bar assemblies (11), four vertical bars (12), four sets of lower horizontal bar assemblies (13), and a load-bearing assembly (14). The four vertical bars (12) are all inclined toward the axial direction of the prestressed steel strand, and each pair of adjacent vertical bars (12) are detachably connected by a set of upper horizontal bar assemblies (11) and a set of lower horizontal bar assemblies (13) to form a trapezoidal structure inclined toward the axial direction of the prestressed steel strand; The bearing assembly (14) is fixedly connected to the bottom of the four vertical rods (12) and is used to support the prestressed steel strands; The first guide device (2) is fixedly installed on the top of a set of upper crossbar assemblies (11).

3. The feeding device for prestressed steel strand cutting as described in claim 2, characterized in that: The four sets of upper crossbar assemblies (11) and the four sets of lower crossbar assemblies (13) have the same structure, each including a crossbar body (111) and a snap-fit ​​assembly (112) symmetrically arranged at both ends of the crossbar body (111). The two sets of snap-fit ​​components (112) have the same structure, both including a slant plate (1121) and a snap-fit ​​component (1122). The inclined plate (1121) is fixedly installed at one end of the crossbar body (111); The inner wall of one end of the snap-fit ​​member (1122) is fixedly connected to the outward side wall of the corresponding inclined plate (1121) to form a U-shaped snap-fit ​​structure. The snap-fit ​​structure can snap into the outer wall of the corresponding vertical bar (12) so that the upper horizontal bar assembly (11) and the lower horizontal bar assembly (13) can detachably connect the two adjacent vertical bars (12).

4. The feeding device for prestressed steel strand cutting as described in claim 3, characterized in that: The snap-fit ​​assembly (112) also includes a rib (1125). The rib (1125) is inclined, and one end of the rib (1125) is fixedly connected to the bottom of the crossbar body (111), and the other end is fixedly connected to the outer wall of the bottom of the inclined plate (1121) facing the crossbar body (111), which is used to strengthen the connection between the inclined plate (1121) and the crossbar body (111).

5. The feeding device for prestressed steel strand cutting as described in claim 2, characterized in that: The bearing assembly (14) includes a horizontally arranged bearing plate (141), a fixing plate (142), and four connecting rods (143). The bearing plate (141) is located at the center of the bottom of the protective frame (1). One end of each of the four connecting rods (143) is fixedly connected to the outer wall of the bearing plate (141), and the other end is fixedly connected to the bottom of each of the four vertical rods (12). The fixed plate (142) is coaxial with the bearing plate (141) and inserted on the top of the bearing plate (141) to support the prestressed steel strand.

6. The feeding device for prestressed steel strand cutting as described in claim 5, characterized in that: The top of the fixing plate (142) is provided with a circular groove, the bottom of the positioning post (3) is placed in the circular groove, the bottom outer wall of the positioning post (3) is provided with a plurality of male buckles (4) along its circumference, and the inner wall of the circular groove is connected with a plurality of female buckles (5) along its circumference. The plurality of male buckles (4) can be engaged with the plurality of female buckles (5) one by one to engage the positioning post (3) in the circular groove.

7. The feeding device for prestressed steel strand cutting as described in claim 1, characterized in that: The second guide device (6) further includes a first locking component (65) and a second locking component (66); The first locking component (65) and the second locking component (66) are both fixedly installed on the top of the rotating disk (61); The first locking component (65) is used to lock the connecting plate (62) in the guide position; The second locking component (66) is used to lock the connecting plate (62) in the storage position.

8. The feeding device for prestressed steel strand cutting as described in claim 1, characterized in that: Both the first guide wheel (21) and the second guide wheel (63) are made of nylon.

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